17,559 results match your criteria Algal Research-biomass Biofuels And Bioproducts[Journal]


Effect of differently methyl-substituted ionic liquids on Scenedesmus obliquus growth, photosynthesis, respiration, and ultrastructure.

Environ Pollut 2019 Apr 10;250:155-165. Epub 2019 Apr 10.

School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, Zhejiang, 310018, China. Electronic address:

Concerns have been raised regarding the ecotoxicity of ionic liquids (ILs) owing to their wide usage in numerous fields. Three imidazolium chloride ILs with different numbers of methyl substituents, 1-decyl-imidazolium chloride ([CIM]Cl), 1-decyl-3-methylimidazolium chloride ([CMIM]Cl), and 1-decyl-2,3-dimethylimidazolium chloride ([CDMIM]Cl), were examined to assess their effects on growth, photosynthesis pigments content, chlorophyll fluorescence, photosynthetic and respiration rate, and cellular ultrastructure of Scenedesmus obliquus. The results showed that algal growth was significantly inhibited by ILs treatments. Read More

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http://dx.doi.org/10.1016/j.envpol.2019.04.021DOI Listing

Membrane fouling control by Ca during coagulation-ultrafiltration process for algal-rich water treatment.

Environ Geochem Health 2019 Apr 16. Epub 2019 Apr 16.

Department of Chemical and Biomolecular Engineering, University of Connecticut, 191 Auditorium Rd. Unit 3222, Storrs, CT, 06269-3222, USA.

Seasonal algal bloom, a water supply issue worldwide, can be efficiently solved by membrane technology. However, membranes typically suffer from serious fouling, which hinders the wide application of this technology. In this study, the feasibility of adding Ca to control membrane fouling in coagulation-membrane treatment of algal-rich water was investigated. Read More

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http://dx.doi.org/10.1007/s10653-019-00291-wDOI Listing

Effect of trophic conditions on microalga growth, nutrient removal, algal organic matter, and energy storage products in Scenedesmus (Acutodesmus) obliquus KGE-17 cultivation.

Bioprocess Biosyst Eng 2019 Apr 15. Epub 2019 Apr 15.

Department of Civil Engineering and Landscape Architecture, Suncheon Jeil College, Jeildaehak-gil 17, Suncheon, Cheonnam, 57997, South Korea.

This study compared the performance of microalga growth, nutrient removal, algal organic matter, and energy storage products in mixotrophic, photoautotrophic, and heterotrophic conditions. Scenedesmus obliquus was used as a model species. Mixotrophic condition showed the highest specific growth rate of 0. Read More

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http://link.springer.com/10.1007/s00449-019-02120-x
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http://dx.doi.org/10.1007/s00449-019-02120-xDOI Listing
April 2019
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Temporal variability in zooplankton community in the western Yellow Sea and its possible links to green tides.

PeerJ 2019 8;7:e6641. Epub 2019 Apr 8.

Huangdao Sub-administration of Qingdao Meteorological Administration, Qingdao, China.

Large-scale macro-algal blooms of (also called green tides) have appeared each summer since 2008 in the western Yellow Sea. In this study, we investigated the temporal variability in zooplankton community in the western Yellow Sea and its possible links to green tides using data from a long-term plankton survey off the coast of Qingdao, China. Environmental conditions observed in the study area during the green tide period (GTP: June-August, 2008-2013) were compared to the non-green tide period (NGTP: June-August, 2005-2007), to support the contention that variations observed in zooplankton community may be attributed to the green tides, as opposed to natural climatic or environmental variations. Read More

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http://dx.doi.org/10.7717/peerj.6641DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6459317PMC

Phytoplankton and Its Role in Accumulation of Microelements in Bottom Deposits of Azov Sea.

ScientificWorldJournal 2019 12;2019:8456371. Epub 2019 Mar 12.

Southern Federal University, Institute of Earth Science, Rostov-on-Don 344090, Russia.

The importance of phytoplankton is high in transformation of substances in aquatic ecosystems and in formation of suspension's material structure. Its main functions are consumption of the dissolved biogenic components and chemical elements and their conversion to a firm phase. The article is devoted to the bioaccumulation of microelements by phytoplankton in the ecosystem of the Azov Sea. Read More

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http://dx.doi.org/10.1155/2019/8456371DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6434276PMC

Freshwater microalgae (Schizochytrium sp.) as a substitute to fish oil for shrimp feed.

Sci Rep 2019 Apr 16;9(1):6178. Epub 2019 Apr 16.

Division of Aquaculture, College of Agriculture, Food Science and Sustainable Systems, Kentucky State University, 103 Athletic Dr, Frankfort, KY, 40601, USA.

Micro-algae, Schizochytrium sp., is rich source of docosahexaenoic acid, DHA (66%-lipid with 27%-DHA). Eight nutritionally balanced-diets were formulated: diet 1 (control) consisted of only fish oil (FO); diets 2 and 3 had increasing amounts of algae-meal and soybean oil (SBO) at the expense of FO; diet 4 consisted of a combination of algae meal (37-g/kg), SBO (21-g/kg), and linseed oil (LSO) at 4-g/kg each; diet 5 had microalgae meal at 50-g/kg and equal amounts of LSO and SBO at 8-g/kg; diets 6 and 7 contained equal amounts of algae-meal at 62-g/kg, but with LSO or SBO added at 8-mg/g, respectively; diet 8 contained only algae-meal at 75-mg/g. Read More

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http://www.nature.com/articles/s41598-019-41020-8
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http://dx.doi.org/10.1038/s41598-019-41020-8DOI Listing
April 2019
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Production of Cyanotoxins by Mediates Interactions with the Mixotrophic Flagellate .

Toxins (Basel) 2019 Apr 15;11(4). Epub 2019 Apr 15.

Hancock Biological Station and Department of Biological Sciences, Murray State University, Murray, KY 42071, USA.

Eutrophication of inland waters is expected to increase the frequency and severity of harmful algal blooms (HABs). Toxin-production associated with HABs has negative effects on human health and aquatic ecosystem functioning. Despite evidence that flagellates can ingest toxin-producing cyanobacteria, interactions between members of the microbial loop are underestimated in our understanding of the food web and algal bloom dynamics. Read More

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https://www.mdpi.com/2072-6651/11/4/223
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http://dx.doi.org/10.3390/toxins11040223DOI Listing
April 2019
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Changes in the neurotransmitter profile in the central nervous system of marine medaka (Oryzias melastigma) after exposure to brevetoxin PbTx-1 - A multivariate approach to establish exposure biomarkers.

Sci Total Environ 2019 Mar 22;673:327-336. Epub 2019 Mar 22.

State Key Laboratory for Marine Pollution, City University of Hong Kong, Hong Kong, China; Department of Chemistry, City University of Hong Kong, Hong Kong, China. Electronic address:

A strategy to construct multivariate biomarkers for exposure to algal neurotoxins via correlating changes to the profiles of a series of neurotransmitters and their metabolites in the central nervous system (CNS) of exposed test organism is reported. 3-Month-old marine medaka (Oryzais melastigma) were exposed to waterborne brevetoxin PbTx-1 at two sub-lethal dose levels (0.5 and 2. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2019.03.193DOI Listing

Remotely sensing harmful algal blooms in the Red Sea.

PLoS One 2019 16;14(4):e0215463. Epub 2019 Apr 16.

Physical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Kingdom of Saudi Arabia.

Harmful Algal Blooms (HABs) are of global concern, as their presence is often associated with socio-economic and environmental issues including impacts on public health, aquaculture and fisheries. Therefore, monitoring the occurrence and succession of HABs is fundamental for managing coastal regions around the world. Yet, due to the lack of adequate in situ measurements, the detection of HABs in coastal marine ecosystems remains challenging. Read More

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http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0215463PLOS
April 2019
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Ultrasensitive Detection of Hepatotoxic Microcystin Production from Cyanobacteria Using Surface-Enhanced Raman Scattering (SERS) Immunosensor.

ACS Sens 2019 Apr 16. Epub 2019 Apr 16.

Microcystin-LR (MC-LR) is considered the most common hazardous toxin produced during harmful algal blooms. In addition to potential risk of long-term exposure to low concentrations in drinking water, acute toxicity due to MC-LR resulting from algal blooms could result in fatalities in rare cases. Although several methods are currently available to detect MC-LR, development of a low-cost, ultrasensitive measurement method would help limit exposure by enabling early detection and continuous monitoring of MC-LR. Read More

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http://dx.doi.org/10.1021/acssensors.8b01453DOI Listing

Differential feeding by common heterotrophic protists on four Scrippsiella species of similar size.

J Phycol 2019 Apr 15. Epub 2019 Apr 15.

School of Earth and Environmental Sciences, College of Natural Sciences, Seoul National University, Seoul, 08826, Korea.

The dinoflagellate genus Scrippsiella is known to cause red tides. Mortality due to predation should be assessed in order to understand the population dynamics of Scrippsiella species. However, predation has been explored only in a few species. Read More

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http://dx.doi.org/10.1111/jpy.12864DOI Listing

Consumer adaptation mediates top-down regulation across a productivity gradient.

Oecologia 2019 Apr 15. Epub 2019 Apr 15.

School of Fisheries, Aquaculture, and Aquatic Sciences, 203 Swingle Hall, Auburn University, Auburn, AL, 36849, USA.

Humans have artificially enhanced the productivity of terrestrial and aquatic ecosystems on a global scale by increasing nutrient loading. While the consequences of eutrophication are well known (e.g. Read More

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http://dx.doi.org/10.1007/s00442-019-04401-4DOI Listing

Nutrient Availability and Metabolism Affect the Stability of Coral-Symbiodiniaceae Symbioses.

Trends Microbiol 2019 Apr 12. Epub 2019 Apr 12.

AIMS@JCU, Australian Institute of Marine Science, College of Science and Engineering, James Cook University, Townsville, Australia; Australian Institute of Marine Science, Townsville, Australia. Electronic address:

Coral reefs rely upon the highly optimized coral-Symbiodiniaceae symbiosis, making them sensitive to environmental change and susceptible to anthropogenic stress. Coral bleaching is predominantly attributed to photo-oxidative stress, yet nutrient availability and metabolism underpin the stability of symbioses. Recent studies link symbiont proliferation under nutrient enrichment to bleaching; however, the interactions between nutrients and symbiotic stability are nuanced. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S0966842X193006
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http://dx.doi.org/10.1016/j.tim.2019.03.004DOI Listing
April 2019
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Physiological Changes of TY02 in Lipid Accumulation under Nitrogen Stress.

Int J Environ Res Public Health 2019 Apr 2;16(7). Epub 2019 Apr 2.

School of Life Science, Shanxi University, Taiyuan 030006, China.

In order to study the effects of nitrogen stress on the lipid synthesis of TY02 and to understand the changes in growth, photosynthetic pigments, total protein and total carbohydrate contents during lipid accumulation, the cells of the strain were cultured in nitrogen-deficient (N) and nitrogen-rich (N⁺) media for one week. Changes in cell growth, chlorophyll content, chlorophyll fluorescence parameters, neutral lipid and total lipid content, total protein content and total carbohydrate content were measured and analyzed. The results showed that, under nitrogen stress, the algal strain grew slowly, and chlorophyll and total protein contents decreased, while total carbohydrate and total lipid contents increased. Read More

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http://dx.doi.org/10.3390/ijerph16071188DOI Listing

Bioaccumulation of methylmercury in a marine diatom and the influence of dissolved organic matter.

Mar Chem 2017 Dec 28;197:70-79. Epub 2017 Sep 28.

School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, NY 11794-5000, USA.

The largest bioconcentration step of most metals, including methylmercury (MeHg), in aquatic biota is from water to phytoplankton, but the extent to which dissolved organic matter (DOM) affects this process for MeHg largely remains unexplored in marine systems. This study investigated the influence of specific sulfur-containing organic compounds and naturally occurring DOM on the accumulation of MeHg in a marine diatom . Initial uptake rate constants and volume concentration factors (VCFs) of MeHg were calculated to evaluate MeHg enrichment in algal cells in the presence of a range of organic compound concentrations. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S03044203173021
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http://dx.doi.org/10.1016/j.marchem.2017.09.005DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6457661PMC
December 2017
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Production and fate of fishy odorants produced by two freshwater chrysophyte species under different temperature and light conditions.

Water Res 2019 Apr 8;157:529-534. Epub 2019 Apr 8.

Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China. Electronic address:

Fishy odor has become one of the most often encountered aesthetic water quality problems in drinking water. While fresh water algae living in colder water can produce offensive fishy odors, their environmental behaviors remain poorly understood. In this study, two chrysophyte species (Synura uvella and Ochromonas sp. Read More

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http://dx.doi.org/10.1016/j.watres.2019.04.004DOI Listing
April 2019
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Can algicide (the thiazolidinedione derivative TD49) truly contribute to the restoration of microbial communities?

Environ Res 2019 Apr 4;173:517-527. Epub 2019 Apr 4.

Marine Ecosystem Research Center, Korea Institute of Ocean Science & Technology, Busan 49111, South Korea; Marine Science Institute, University of Texas at Austin, Port Aransas, TX 78373, USA. Electronic address:

Harmful algal blooms (HABs) are becoming a more serious ecological threat to marine environments; they not only produce toxins, resulting in the death of marine organisms, but they also adversely affect biodiversity, which is an indicator of the health of an ecosystem. Thus, to mitigate HABs, numerous studies have been conducted to develop an effective algicide, but few studies have elucidated the effect of algicides on marine environmental health. In this study, thiazolidinedione derivative 49 (TD49), which has been developed as an algicide for the dinoflagellate Heterocapsa circularisquama, was used, and we investigated changes in phytoplankton biomass (abundance, chlorophyll a, and carbon biomass) and biodiversity (diversity, evenness, and richness) following the application of TD49. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S00139351193020
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http://dx.doi.org/10.1016/j.envres.2019.03.070DOI Listing
April 2019
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Development and application of a multispecies toxicity test with tropical freshwater microalgae.

Environ Pollut 2019 Mar 21;250:97-106. Epub 2019 Mar 21.

School of Earth and Environmental Sciences, University of Queensland, Queensland, Australia; Department of Environment and Science, Queensland, Australia; Centre for Agroecology, Water and Resilience, Coventry University, West Midlands, United Kingdom.

Microalgae are commonly used in ecotoxicity testing due to their ease of culturing and rapid cell division rates. These tests generally utilise a single species of algae; however, microalgae occur in the environment as complex communities of multiple species. To date, routine multispecies toxicity tests using tropical microalgae have not been available. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S02697491183536
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http://dx.doi.org/10.1016/j.envpol.2019.03.058DOI Listing
March 2019
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Transcriptome data of the carrageenophyte .

Data Brief 2019 Jun 12;24:103824. Epub 2019 Mar 12.

Agro-Biotechnology Institute Malaysia, National Institutes of Biotechnology Malaysia, c/o MARDI Headquarters, 43400 Serdang, Selangor, Malaysia.

or commonly known as "Spinosum", is an economically important red alga that naturally grows on coral reefs with moderately strong currents in tropical and sub-tropical areas. This species is the primary source of iota-carrageenan which has high demands in the food, pharmaceutical and manufacturing industries, and as such it has been widely cultivated. The increasing global demand for carrageenan has led to extensive commercial cultivation of carrageenophytes mainly in the tropics. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S23523409193017
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http://dx.doi.org/10.1016/j.dib.2019.103824DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6444127PMC
June 2019
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Cyanophage Propagation in the Freshwater Cyanobacterium Is Constrained by Phosphorus Limitation and Enhanced by Elevated CO.

Front Microbiol 2019 29;10:617. Epub 2019 Mar 29.

Department of Aquatic Ecology, Netherlands Institute of Ecology, Wageningen, Netherlands.

Intensification of human activities has led to changes in the availabilities of CO and nutrients in freshwater ecosystems, which may greatly alter the physiological status of phytoplankton. Viruses require hosts for their reproduction and shifts in phytoplankton host physiology through global environmental change may thus affect viral infections as well. Various studies have investigated the impacts of single environmental factors on phytoplankton virus propagation, yet little is known about the impacts of multiple factors, particularly in freshwater systems. Read More

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http://dx.doi.org/10.3389/fmicb.2019.00617DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6449453PMC

Spatial analysis of toxic or otherwise bioactive cyanobacterial peptides in Green Bay, Lake Michigan.

J Great Lakes Res 2018 Oct 26;44(5):924-933. Epub 2018 Sep 26.

Joseph J Zilber School of Public Health, University of Wisconsin-Milwaukee, Milwaukee WI, USA.

Cyanobacterial harmful algal blooms (cyanoHABs) are a growing problem in freshwater systems worldwide. CyanoHABs are well documented in Green Bay, Lake Michigan but little is known about cyanoHAB toxicity. This study characterized the diversity and spatial distribution of toxic or otherwise bioactive cyanobacterial peptides (TBPs) in Green Bay. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S03801330183017
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http://dx.doi.org/10.1016/j.jglr.2018.08.016DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6456082PMC
October 2018
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A decline in molluscan carbonate production driven by the loss of vegetated habitats encoded in the Holocene sedimentary record of the Gulf of Trieste.

Sedimentology 2019 Apr 25;66(3):781-807. Epub 2018 Aug 25.

Department of Palaeontology University of Vienna Althanstrasse 14 Vienna 1090 Austria.

Carbonate sediments in non-vegetated habitats on the north-east Adriatic shelf are dominated by shells of molluscs. However, the rate of carbonate molluscan production prior to the 20th century eutrophication and overfishing on this and other shelves remains unknown because: (i) monitoring of ecosystems prior to the 20th century was scarce; and (ii) ecosystem history inferred from cores is masked by condensation and mixing. Here, based on geochronological dating of four bivalve species, carbonate production during the Holocene is assessed in the Gulf of Trieste, where algal and seagrass habitats underwent a major decline during the 20th century. Read More

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http://dx.doi.org/10.1111/sed.12516DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6446828PMC

Extremely acidic environment: Biogeochemical effects on algal biofilms.

Ecotoxicol Environ Saf 2019 Aug 10;177:124-132. Epub 2019 Apr 10.

CESAM Associated Lab - Department of Biology, Campus de Santiago, 3810-193, Aveiro, Portugal; Department of Biology, University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal.

The biological responses of acidobiontic species to extremely acidic waters, as those related with Acid Mine Drainage (AMD) processes, are relevant not only to understand the toxicological degree of the waters as well as the mechanisms responsible for the survival and adaptation of such organisms. Therefore, the objective of this study was to evaluate the effect of acidic pH and metals in biofilms collected in two sites a lentic permanent acid pond (AP) and a temporary acid stream (AS) affected by Acid Mine Drainage (AMD), and taking as control (C), an uncontaminated site with circumneutral pH. The results showed typical conditions of AMD-contaminated waters in sites AS and AP (pH < 3 and high concentrations of Al, Cu, Fe, Mn, Pb and Zn), which are responsible for a substantial decrease in biomass and biodiversity of biofilms (with a dominance of acidobiontic species, such as Pinnularia aljustrelica and Eunotia exigua, comparing to the control site. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S01476513193041
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http://dx.doi.org/10.1016/j.ecoenv.2019.04.001DOI Listing
August 2019
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Polyphenols obtained from Didymosphenia geminata (Lyngbye) Schmith altered the viability and proliferation of salmonids cells lines SHK-1 and CHSE-214.

Aquat Toxicol 2019 Apr 1;211:141-147. Epub 2019 Apr 1.

Laboratorio Biología Celular y Molecular Aplicada, Facultad de Ciencias, Universidad Mayor, Temuco, Chile. Electronic address:

Didymosphenia geminata (Lyngbye) Schmidt, also referred to as Didymo, is an invasive diatom that forms nuisance mats. Since it was first reported in our country in approximately 2010, Didymo has expanded and colonized different rivers in the Zona Austral region of Chile. Its biology and effects on ecosystems are still being studied because Didymo is an invasive algal mat that forms in a range of systems from oligotrophic austral rivers to more subtropical systems. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S0166445X193005
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http://dx.doi.org/10.1016/j.aquatox.2019.03.022DOI Listing
April 2019
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Electrospun nanofiber membranes incorporating PDMS-aerogel superhydrophobic coating with enhanced flux and improved anti-wettability in membrane distillation.

Environ Sci Technol 2019 Apr 12. Epub 2019 Apr 12.

Electrospun nanofiber membranes (ENMs) have garnered increasing interest due to their controllable nanofiber structure and high void volume fraction properties in membrane distillation (MD). However, MD technology still faces limitations mainly due to low permeate flux and membrane wetting for feeds containing low surface tension compounds. Perfluorinated superhydrophobic membranes could be an alternative, but it has negative environmental impacts. Read More

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http://dx.doi.org/10.1021/acs.est.8b07254DOI Listing

Experimental analyses of diversity partitioning in southern hemisphere algal communities.

Authors:
David R Schiel

Oecologia 2019 Apr 11. Epub 2019 Apr 11.

Marine Ecology Research Group, School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch, New Zealand.

Understanding how biodiversity and its components of alpha, beta, and gamma vary over spatial and temporal scales and across communities is crucial to mitigating stressors of ecosystems. Marine communities present several problems in partitioning diversity over fine spatial scales, such as tidal zones, and temporal scales relating to seasonal occurrences of species and recovery responses to impacts. This study uses an experimental approach to test disturbance effects on beta diversity in algal communities in southern New Zealand. Read More

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http://dx.doi.org/10.1007/s00442-019-04375-3DOI Listing

Comprehensive evaluation of a cost-effective method of culturing with unsterilized piggery wastewater for biofuel production.

Biotechnol Biofuels 2019 1;12:69. Epub 2019 Apr 1.

3School of Animal Rural and Environmental Sciences, Nottingham Trent University, Brackenhurst, Southwell, Nottinghamshire NG25 0QF UK.

Background: The utilization of for the dual goals of biofuel production and wastewater nutrient removal is highly attractive. Moreover, this technology combined with flue gas (rich in CO) cleaning is considered to be an effective way of improving biofuel production. However, the sterilization of wastewater is an energy-consuming step. Read More

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http://dx.doi.org/10.1186/s13068-019-1407-xDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6442423PMC
April 2019
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Characterization of the Chloroplast Genome of (Trentepohliales, Chlorophyta), and Discussion of its Taxonomy.

Int J Mol Sci 2019 Apr 10;20(7). Epub 2019 Apr 10.

Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.

Trentepohliales is an aerial order of Chlorophyta with approximately 80 species distributed mainly in tropical and subtropical regions. The taxonomy of this genus is quite difficult and presents a challenge for many phycologists. Although plentiful molecular data is available, most of the sequences are not identified at the species level. Read More

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http://dx.doi.org/10.3390/ijms20071774DOI Listing
April 2019
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Effects of cadmium toxicity on diploid wheat (Triticum urartu) and the molecular mechanism of the cadmium response.

J Hazard Mater 2019 Apr 3;374:1-10. Epub 2019 Apr 3.

College of Life Science, University of the Chinese Academy of Sciences, Beijing, China; Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China; The Innovative Academy of Seed Design (INASEED), Chinese Academy of Sciences, Beijing, China. Electronic address:

Cadmium (Cd) is a widespread soil contaminant that readily accumulates in wheat, and posing a potential threat to human health. Our aim is to investigate Cd toxicity effect and molecular mechanisms for wheat. In this study, the physiological indexes, morphology, and gene expression patterns of diploid wheat (Triticum urartu) seedlings were evaluated after 2 and 5 d of a Cd treatment (10 μM CdSO). Read More

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http://dx.doi.org/10.1016/j.jhazmat.2019.04.018DOI Listing
April 2019
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A novel approach using low-cost Citrus limetta waste for mixotrophic cultivation of oleaginous microalgae to augment automotive quality biodiesel production.

Environ Sci Pollut Res Int 2019 Apr 10. Epub 2019 Apr 10.

Centre for Transportation Systems, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, 247667, India.

The present study reports the use of Citrus limetta (CL) residue for cultivating Chlorella sp. mixotrophically to augment production of biodiesel. The cultivation of Chlorella sp. Read More

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http://dx.doi.org/10.1007/s11356-019-04946-0DOI Listing

Influence of long term nitrogen limitation on lipid, protein and pigment production of in photoheterotrophic cultures.

PeerJ 2019 1;7:e6624. Epub 2019 Apr 1.

Faculty of Biological and Environmental Sciences, Ecosystems and Environment Research Programme, University of Helsinki, Lahti, Finland.

Nitrogen limitation is considered a good strategy for enhancement of algal lipid production while conversely N repletion has been shown to result in biomass rich in proteins. In this study, the influence of long-term N limitation on fatty acid (FA), protein, chlorophyll , and carotenoid concentrations was studied in N limited cultures. Biomass composition was analyzed from three-time points from N starved late stationary phase cultures, exposed to three different initial N concentrations in the growth medium. Read More

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http://dx.doi.org/10.7717/peerj.6624DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6448558PMC

Understanding the functions of endogenous DOF transcript factor in .

Biotechnol Biofuels 2019 27;12:67. Epub 2019 Mar 27.

Guangdong Engineering Research Center for Marine Algal Biotechnology, Guangdong Key Laboratory of Plant Epigenetics, Shenzhen Key Laboratory of Marine Bioresource and Eco-environmental Science, Longhua Innovation Institute for Biotechnology, College of Life Sciences, Shenzhen University, Shenzhen, 518060 People's Republic of China.

Background: The regulation of genes related to lipid metabolism by genetic engineering is an important way to increase the accumulation of lipids in microalgae. DNA binding with one finger (DOF) is a plant-specific transcription factor in higher plants, where it regulates carbon and nitrogen metabolic pathways by regulating key genes involved in these pathways. Overexpression of DOF can increase lipid production in plants; however, it is not clear whether overexpression of DOF can increase lipids in microalgae. Read More

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http://dx.doi.org/10.1186/s13068-019-1403-1DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6436238PMC

Treated rice husk as a recyclable sorbent for the removal of microcystins from water.

Sci Total Environ 2019 May 5;666:1292-1300. Epub 2019 Feb 5.

Department of Chemistry and Biochemistry, College of Natural Sciences and Mathematics and School of Green Chemistry and Engineering, University of Toledo, Toledo, OH 43606, USA. Electronic address:

Microcystins (MCs) appear during harmful algal blooms (HABs) in water sources worldwide, and represent a threat for humans and animals ingesting or inhaling MCs from the environment. Herein, treated rice husk (RH) was tested as a recyclable sorbent for removal of six MCs (MC-RR, MC-LR, MC-YR, MC-LA, MC-LF, and MC-LW) from water. RH was refluxed with hydrochloric acid and heated to 250 °C to produce the sorbent material. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S00489697193052
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http://dx.doi.org/10.1016/j.scitotenv.2019.02.042DOI Listing
May 2019
3 Reads

Assessment of freshwater discharge into a coastal bay through multi-basin ensemble hydrological modelling.

Sci Total Environ 2019 Jun 5;669:812-820. Epub 2019 Mar 5.

UMR SAS, AGROCAMPUS OUEST, INRA, Rennes 35000, France.

Coastal basins of the Brittany peninsula (France) are hydrological hot spots. A high level of nutrient pollution affects many of these basins and causes algal blooms in several coastal bays; nine have been a specific focus of the European Commission since 2007. The flux of each contributing basin flowing into these bays must be examined to assess the conditions and explore mitigation options. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2019.02.387DOI Listing

The light-dependent lethal effects of 1,2-benzisothiazol-3(2H)-one and its biodegradation by freshwater microalgae.

Sci Total Environ 2019 Apr 1;672:563-571. Epub 2019 Apr 1.

Environmental Simulation and Pollution Control State Key Joint Laboratory, School of Environment, Tsinghua University, Beijing 100084, China; Shenzhen Environmental Science and New Energy Technology Engineering Laboratory, Tsinghua-Berkeley Shenzhen Institute, Shenzhen 518055, China. Electronic address:

As 1,2-benzisothiazol-3(2H)-one (BIT) has been widely used in high concentrations for microbial growth control in many domestic and industrial processes, its potential eco-risk should be assessed. This study investigated the interaction between BIT and microalgae in aquatic environment as the mechanism of BIT lethal effect on microalgae was unclear and whether microalgae could efficiently remove BIT was unknown. It was found that Chlorella vulgaris could be killed by high concentrations of BIT, and this lethal effect was strongly enhanced when exposed to light. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2019.03.468DOI Listing
April 2019
1 Read

Assessments of Algal Toxicity and PBT Behaviour of Pesticides with No Eco-toxicological Data: Predictive Ability of QSA/(T)R Models.

Mol Inform 2019 Apr 10. Epub 2019 Apr 10.

Ecotoxicology and Chemometrics Laboratory, Institute of Environmental Sciences, Bogazici University, Besiktas/Istanbul, Turkey.

In the present study, the effect of eight pesticides with no ecotoxicological data on the growth rate of Chlorella vulgaris was measured. The selected pesticides are acetochlor, acetamiprid, boscalid diphenamid, gibberellic acid, ioxynil, diclofop and 2,4,5-T. The algal toxicity (IC ) of boscalid could not be determined within its solubility limit. Read More

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http://dx.doi.org/10.1002/minf.201800137DOI Listing
April 2019
4 Reads

Metatranscriptomic Signatures Associated With Phytoplankton Regime Shift From Diatom Dominance to a Dinoflagellate Bloom.

Front Microbiol 2019 22;10:590. Epub 2019 Mar 22.

State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, China.

Diatoms and dinoflagellates dominate coastal marine phytoplankton communities as major players of marine biogeochemical cycles and their seasonal succession often leads to harmful algal blooms (HABs). What regulates their respective dominances and the development of the HABs remains elusive. Here we conducted time-sequential metatranscriptomic profiling on a natural assemblage that evolved from diatom dominance to a dinoflagellate bloom to interrogate the underlying major metabolic and ecological drivers. Read More

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http://dx.doi.org/10.3389/fmicb.2019.00590DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6439486PMC
March 2019
3.941 Impact Factor

Insights into coral reef benthic dynamics from nonlinear spatial forecasting.

J R Soc Interface 2019 Apr;16(153):20190047

2 Center for Marine Biodiversity and Conservation, Scripps Institution of Oceanography, University of California - San Diego , 9500 Gilman Drive, La Jolla, CA 92093-0202 , USA.

Nonlinear time-series forecasting, or empirical dynamic modelling, has been used extensively in the past two decades as a tool for distinguishing between random temporal behaviour and nonlinear deterministic dynamics. Previous authors have extended nonlinear time-series forecasting to continuous spatial data. Here, we adjust spatial forecasting to handle discrete data and apply the technique to explore the ubiquity of nonlinear determinism in irregular spatial configurations of coral and algal taxa from Palmyra Atoll, a relatively pristine reef in the central Pacific Ocean. Read More

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http://dx.doi.org/10.1098/rsif.2019.0047DOI Listing

Integrated mRNA and miRNA expression profile analyses reveal the potential roles of sex-biased miRNA-mRNA pairs in gonad tissues of the Chinese concave-eared torrent frog (Odorrana tormota).

J Exp Zool B Mol Dev Evol 2019 Apr 9. Epub 2019 Apr 9.

Key Laboratory for the Conservation and Utilization of Important Biological Resources of Anhui Province, Wuhu, China.

The Chinese concave-eared torrent frog (Odorrana tormota) is typically sexually dimorphic. Females are significantly less common than males in the wild. Until now, the molecular mechanisms of reproduction and sex differentiation of frogs remain unclear. Read More

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http://dx.doi.org/10.1002/jez.b.22851DOI Listing

Electrophysiological evidence for light-activated cation transport in calcifying corals.

Proc Biol Sci 2019 Feb;286(1896):20182444

1 Christian-Albrechts-Universität, Institute of Physiology , Kiel , Germany.

Light has been demonstrated to enhance calcification rates in hermatypic coral species. To date, it remains unresolved whether calcifying epithelia change their ion transport activity during illumination, and whether such a process is mediated by the endosymbiotic algae or can be controlled by the coral host itself. Using a modified Ussing chamber in combination with H sensitive microelectrode measurements, the present work demonstrates that light triggers the generation of a skeleton positive potential of up to 0. Read More

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http://dx.doi.org/10.1098/rspb.2018.2444DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6408601PMC
February 2019

The evolution of traits and functions in herbivorous coral reef fishes through space and time.

Proc Biol Sci 2019 Feb;286(1897):20182672

1 ARC Centre of Excellence for Coral Reef Studies, James Cook University , Townsville, Queensland 4811 , Australia.

Herbivory by fishes has been identified as a key ecological process shaping coral reefs through time. Although taxonomically limited, herbivorous reef fishes display a wide range of traits, which results in varied ecosystem functions on reefs around the world. Yet, we understand little about how these trait combinations and functions in ecosystems changed through time and across biogeographic realms. Read More

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http://dx.doi.org/10.1098/rspb.2018.2672DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6408896PMC
February 2019
1 Read

Determination of microcystins, nodularin, anatoxin-a, cylindrospermopsin, and saxitoxin in water and fish tissue using isotope dilution liquid chromatography tandem mass spectrometry.

J Chromatogr A 2019 Apr 1. Epub 2019 Apr 1.

Department of Environmental Science, Center for Reservoir and Aquatic Systems Research, Baylor University, Waco, TX, 76798, USA; Institute of Biomedical Studies, Baylor University, Waco, TX, 76798, USA. Electronic address:

Cyanobacteria can form dense blooms under specific environmental conditions, and some species produce secondary metabolites known as cyanotoxins, which present significant risks to public health and the environment. Identifying toxins produced by cyanobacteria present in surface water and fish is critical to ensuring high quality food and water for consumption, and protectionn of recreational uses. Current analytical screening methods typically focus on one class of cyanotoxins in a single matrix and rarely include saxitoxin. Read More

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http://dx.doi.org/10.1016/j.chroma.2019.03.066DOI Listing

Treating wastewater by indigenous microalgae strain in pilot platform located inside a municipal wastewater treatment plant.

Environ Technol 2019 Apr 9:1-37. Epub 2019 Apr 9.

f Phytolutions GmbH , Bremen , 28759 , Germany .

Various resources from a municipal wastewater treatment plant (MWTP) are available for microalgae cultivation plants, suggesting that a combination of these technologies can be used to produce microalgae biomass and remove contaminants at a low cost. In this study, the growth performance and nutrient removal efficiency of an indigenous Scenedesmus sp. in various wastewater media with different exchange patterns were investigated firstly, then transferred to a pilot-scale photobioreactor (located inside a MWTP) for bioremediation use. Read More

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http://dx.doi.org/10.1080/09593330.2019.1604816DOI Listing

Organellar DNA Polymerases in Complex Plastid-Bearing Algae.

Biomolecules 2019 04 7;9(4). Epub 2019 Apr 7.

Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan.

DNA replication in plastids and mitochondria is generally regulated by nucleus-encoded proteins. In plants and red algae, a nucleus-encoded enzyme called POP (plant and protist organellar DNA polymerase) is involved in DNA replication in both organelles by virtue of its dual localization. POPs are family A DNA polymerases, which include bacterial DNA polymerase I (PolI). Read More

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http://dx.doi.org/10.3390/biom9040140DOI Listing

Nanobubble Technologies Offer Opportunities To Improve Water Treatment.

Acc Chem Res 2019 Apr 8. Epub 2019 Apr 8.

Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment, School of Sustainable Engineering and the Built Environment , Arizona State University , Tempe , Arizona 85287-5306 , United States.

Since first hypothesizing the existence of nanobubbles (NBs) in 1994, the empirical study of NB properties and commercialization of NB generators have rapidly evolved. NBs are stable spherical packages of gas within liquid and are operationally defined as having diameters less than 1000 nm, though they are typically in the range of 100 nm in one dimension. While theories still lack the ability to explain empirical evidence for formation of stable NBs in water, numerous NB applications have emerged in different fields, including water and wastewater purification where NBs offer the potential to replace or improve efficiency of current treatment processes. Read More

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http://dx.doi.org/10.1021/acs.accounts.8b00606DOI Listing
April 2019
3 Reads

Consumptive and non-consumptive effects of predators vary with the ontogeny of their prey.

Ecology 2019 Apr 8:e02649. Epub 2019 Apr 8.

Centre d'Estudis Avançats de Blanes (CEAB-CSIC), Carrer d'Accés a la cala Sant Francesc 14, Blanes, 17300, Spain.

Predators exert a strong influence on ecological communities by reducing the abundance of prey (consumptive effects) and shaping their foraging behavior (non-consumptive effects). Although the prevalence of trophic cascades triggered by non-consumptive effects is increasingly recognized in a wide range of ecosystems, how its relative strength changes as prey individuals grow in size along various life stages remains poorly resolved. We investigated how the effects of predators vary with the ontogeny of a key herbivorous sea urchin, which is responsible for transforming diverse macroalgal forests to a barren state dominated by bare rock and encrusting coralline algae. Read More

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http://dx.doi.org/10.1002/ecy.2649DOI Listing

Synergistic reduction of a native key herbivore performance by two non-indigenous invasive algae.

Mar Pollut Bull 2019 Apr 18;141:649-654. Epub 2019 Mar 18.

Stazione Zoologica Anton Dohrn, Villa Comunale, Naples 80121, Italy.

Native generalist grazers can control the populations of non-indigenous invasive algae (NIIA). Here, it was found that the simultaneous consumption of two co-occurring NIIA, Caulerpa cylindracea and C. taxifolia var. Read More

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http://dx.doi.org/10.1016/j.marpolbul.2019.02.073DOI Listing

Caribbean gorgonian octocorals cope with nutrient enrichment.

Mar Pollut Bull 2019 Apr 14;141:621-628. Epub 2019 Mar 14.

Department of Biology, University of Mississippi, University, MS, 38677, USA. Electronic address:

Corals inhabit oligotrophic waters, thriving amidst limited nutrients such as nitrogen and phosphorous. When nutrient levels increase, usually due to human activity, the symbiosis of dinoflagellates (family Symbiodiniaceae) with scleractinian corals can break down. Although gorgonian corals dominate many Caribbean reefs, the impact of enrichment on them and their algae is understudied. Read More

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http://dx.doi.org/10.1016/j.marpolbul.2019.02.067DOI Listing

Quantifying sediment dynamics on an inshore coral reef: Putting algal turfs in perspective.

Mar Pollut Bull 2019 Apr 7;141:404-415. Epub 2019 Mar 7.

College of Science and Engineering, Australian Research Council Centre of Excellence for Coral Reef Studies, James Cook University, Townsville 4811, QLD, Australia. Electronic address:

Increased sediment loads within algal turfs, can be highly detrimental to coral reef systems. However, significant knowledge gaps remain in relation to sediment dynamics, especially linking suspended sediments, sedimentation and turf-bound sediments. To examine these links, a series of different methods for quantifying suspended sediments, sedimentation and the accumulation of turf sediments were compared, simultaneously, on an inner-shelf reef. Read More

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http://dx.doi.org/10.1016/j.marpolbul.2019.02.071DOI Listing

Microbial catabolism of Porphyra haitanensis polysaccharides by human gut microbiota.

Food Chem 2019 Aug 12;289:177-186. Epub 2019 Mar 12.

Guangdong Provincial Key Laboratory of Marine Biotechnology, STU-UNIVPM Joint Algal Research Center, Department of Biology, College of Science, Shantou University, Shantou 515063, Guangdong, PR China. Electronic address:

This study applied an in vitro fermentation model, whereby the catabolism of Porphyra haitanensis polysaccharides (PHP) was monitored coupled with the variations of microbiota composition and the concentration of short-chain fatty acids (SCFAs), so as to assess the effects of PHP on human intestinal microbiota. After 24 h anaerobic incubation, the level of microflora diversity increased significantly, as the microbiome structure was reshaped through promotion of intestinal probiotics proliferation and inhibition of pathogens growth. Besides, the final concentration of total SCFAs increased to 32. Read More

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http://dx.doi.org/10.1016/j.foodchem.2019.03.050DOI Listing