96,289 results match your criteria fungalbacterial biomass

Selenium respiration in anaerobic bacteria: Does energy generation pay off?

J Inorg Biochem 2021 Jun 5;222:111509. Epub 2021 Jun 5.

Department of Biology, University of New Mexico, MSCO3 2020, Albuquerque, NM 87131, USA.

Selenium (Se) respiration in bacteria was revealed for the first time at the end of 1980s. Although thermodynamically-favorable, energy-dense and documented in phylogenetically-diverse bacteria, this metabolic process appears to be accompanied by a number of challenges and numerous unanswered questions. Selenium oxyanions, SeO and SeO, are reduced to elemental Se (Se) through anaerobic respiration, the end product being solid and displaying a considerable size (up to 500 nm) at the bacterial scale. Read More

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Zinc oxide nanoparticles alleviates the adverse effects of cadmium stress on Oryza sativa via modulation of the photosynthesis and antioxidant defense system.

Ecotoxicol Environ Saf 2021 Jun 8;220:112401. Epub 2021 Jun 8.

Department of Botany, S.P. College, Srinagar, Jammu and Kashmir, India. Electronic address:

Cadmium (Cd) is a trace element causing severe toxicity symptoms in plants, besides posing hazardous fitness issue due to its buildup in the human body through food chain. Nanoparticles (NPs) are recently employed as a novel strategy to directly ameliorate the Cd stress and acted as nano-fertilizers. The intend of the current study was to explore the effects of zinc oxide nanoparticles (ZnO-NPs; 50 mg/L) on plant growth, photosynthetic activity, elemental status and antioxidant activity in Oryza sativa (rice) under Cd (0. Read More

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Phthalic acid esters degradation by a novel marine bacterial strain Mycolicibacterium phocaicum RL-HY01: Characterization, metabolic pathway and bioaugmentation.

Sci Total Environ 2021 Jun 5;791:148303. Epub 2021 Jun 5.

Shenzhen Research Institute of Guangdong Ocean University, Shenzhen 518108, China; College of Coastal Agricultural Sciences, School of Chemistry and Environment, Guangdong Ocean University, Zhanjiang 524088, China. Electronic address:

Phthalic acid esters (PAEs) are one of the most widely used plasticizers and the well-studied environmental pollutants with endocrine disrupting properties. Investigation about PAEs in terrestrial ecosystem has been extensively conducted while the fate of PAEs in marine environment remains underexplored. In this study, a novel di-(2-ethylhexyl) phthalate (DEHP) degrading marine bacterial strain, Mycolicibacterium phocaicum RL-HY01, was isolated and characterized from intertidal sediments. Read More

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Trophic interactions of reef-associated predatory fishes (Hexagrammos otakii and Sebastes schlegelii) in natural and artificial reefs along the coast of North Yellow Sea, China.

Sci Total Environ 2021 Jun 6;791:148250. Epub 2021 Jun 6.

Research and Development Center for Efficient Utilization of Coastal Bioresources, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, People's Republic of China; Muping Coastal Environment Research Station, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, People's Republic of China. Electronic address:

Large reef-associated predatory fishes play important roles in aquatic ecosystem along coast because of their ecological functions and economic values to recreational and commercial fisheries. This study was carried out to assess the function of artificial reefs as alternative habitats for two common reef-associated predatory fishes in the north of Yellow Sea, China, Fat Greenling Hexagrammos otakii and Korean rockfish Sebastes schlegelii. According to the catch per unit effort (CPUE), the biomass of predatory fishes at the artificial reef was comparable (H. Read More

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Co-hydrothermal carbonization of swine manure and cellulose: Influence of mutual interaction of intermediates on properties of the products.

Sci Total Environ 2021 May 29;791:148134. Epub 2021 May 29.

School of Material Science and Engineering, University of Jinan, Jinan 250022, China. Electronic address:

Co-hydrothermal carbonization (HTC) of livestock manure and biomass might improve the fuel properties of the hydrochar due to the high reactivity of the biomass-derived intermediates with the abundant oxygen-containing functionalities. However, the complicated compositions make it difficult to explicit the specific roles of the individual components of biomass played in the co-HTC process. In this study, cellulose was used for co-HTC with swine manure to investigate the influence on the properties of the hydrochar. Read More

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Simulated acid mine drainage treatment in iron oxidizing ceramic membrane bioreactor with subsequent co-precipitation of iron and arsenic.

Water Res 2021 May 27;201:117297. Epub 2021 May 27.

Environmental and Energy Systems Engineering Program, Istanbul Medeniyet University, Istanbul, 34700, Turkey; Department of Bioengineering, Istanbul Medeniyet University, Istanbul, 34700, Turkey. Electronic address:

Acid mine drainage (AMD), generated in the active and abandoned mine sites, is characterized by low pH and high metal concentrations. One AMD treatment possibility is biologically oxidizing Fe followed by precipitation through pH control. As compared to autotrophic iron oxidizing microbial community, a microbial community enriched in the presence of organic nutrients was hypothesized to yield higher biomass during commissioning the bioreactor. Read More

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Assessing the effect of herbicide diuron on river biofilm: A statistical model.

Chemosphere 2021 Jun 4;282:131104. Epub 2021 Jun 4.

School of Environmental Studies. Jadavpur University. Kolkata, 700032, India. Electronic address:

River biofilm communities are the first ones to be exposed to all toxic discharges received via run off from agricultural fields. Hence, changes in river biofilm community structure and growth pattern are considered as indicator of overall health of lotic ecosystem. Toxicants have effect on biofilm biomass, photosynthetic efficiency and chlorophyll a concentrations. Read More

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Assessment of hexavalent chromium (VI) biosorption competence of indigenous Aspergillus tubingensis AF3 isolated from bauxite mine tailing.

Chemosphere 2021 Jun 1;282:131055. Epub 2021 Jun 1.

Faculty of Electrical and Electronics Engineering, Ton Duc Thang, University, Ho Chi Minh City, Viet Nam. Electronic address:

The intention of this research was to find the most eminent metal tolerant and absorbing autochthonous fungal species from the waste dump of a bauxite mine. Out of the 4 (BI-1, BI-II, BI-III, and BI-IV) predominant isolates, BI-II had an excellent metal tolerance potential against most of the metals in the subsequent order: Cr(VI) (1500), Cu(II) (600), Pb(II) (500), and Zn(II) (500-1500 μg mL). BI-II had shown tolerance to Cr(VI) up to 1500 mg L. Read More

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Bio-CQDs surface modification BiOCl for the BPA elimination and evaluation in visible light: The contribution of C-localized level.

J Colloid Interface Sci 2021 Jun 2;602:1-13. Epub 2021 Jun 2.

State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, China.

Carbon quantum dots (CQDs) doping semiconductors can boost solar-to-hydrogen conversion and the photodegradation in VIS-NIR light, therefore attract great attention, but the perspective of CQDs role is seldom explored. Here, a biomass-CQDs was assembled with BiOCl (CQDs/BiOCl), then served as the visible-photodegradation model for a mechanistic investigation. Furthermore, CQDs/BiOCl removed 90% bisphenol A (BPA) within 2 h under visible light. Read More

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Construction of a novel microbial consortium valued for the effective degradation and detoxification of creosote-treated sawdust along with enhanced methane production.

J Hazard Mater 2021 May 27;418:126091. Epub 2021 May 27.

Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China. Electronic address:

Lignocellulosic biomass represents an unlimited and ubiquitous energy source, which can effectively address current global challenges, including climate change, greenhouse gas emissions, and increased energy demand. However, lignocellulose recalcitrance hinders microbial degradation, especially in case of contaminated materials such as creosote (CRO)-treated wood, which necessitates appropriate processing in order to eliminate pollution. This study might be the first to explore a novel bacterial consortium SST-4, for decomposing birchwood sawdust, capable of concurrently degrading lignocellulose and CRO compounds. Read More

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Characterization of chitin-glucan complex from Tremella fuciformis fermentation residue and evaluation of its antibacterial performance.

Int J Biol Macromol 2021 Jun 9. Epub 2021 Jun 9.

College of Food and Light Industry, Nanjing Tech University, Nanjing 211800, PR China.

Submerged fermentation of fungi is an efficient way to obtain extracellular polysaccharides, however, in this process, excess discarded biomass is produced. In this study, Tremella fuciformis mycelia were reused as the raw material to isolate a novel fungal chitin-glucan complex (CGC-TFM) using alkaline extraction. Characteristic analysis revealed that the CGC-TFM consisted of glucosamine/acetylglucosamine and glucose (GlcN:Glc = 26:74 mol%), indicating a reference to the β polymorphism of chitin-glucan complex, with the molecular weight and crystallinity index of 256 ± 3. Read More

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Oncogene-regulated release of extracellular vesicles.

Dev Cell 2021 Jun 8. Epub 2021 Jun 8.

Department of Cell and Tissue Biology, University of California, San Francisco, San Francisco, CA 94143, USA; Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA 94143, USA; Department of Medicine, University of California, San Francisco, San Francisco, CA 94143, USA. Electronic address:

Oncogenes can alter metabolism by changing the balance between anabolic and catabolic processes. However, how oncogenes regulate tumor cell biomass remains poorly understood. Using isogenic MCF10A cells transformed with nine different oncogenes, we show that specific oncogenes reduce the biomass of cancer cells by promoting extracellular vesicle (EV) release. Read More

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A"Dirty" Footprint: Macroinvertebrate diversity in Amazonian Anthropic Soils.

Glob Chang Biol 2021 Jun 12. Epub 2021 Jun 12.

Embrapa Amazônia Oriental, Santarém, PA, 68020-640, Brazil.

Amazonian rainforests, once thought to be pristine wilderness, are increasingly known to have been widely inhabited, modified, and managed prior to European arrival, by human populations with diverse cultural backgrounds. Amazonian Dark Earths (ADEs) are fertile soils found throughout the Amazon Basin, created by pre-Columbian societies with sedentary habits. Much is known about the chemistry of these soils, yet their zoology has been neglected. Read More

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Transcriptome response of maize (Zea mays L.) seedlings to heat stress.

Protoplasma 2021 Jun 12. Epub 2021 Jun 12.

School of Life Sciences, Yunnan Normal University, Kunming, 650092, People's Republic of China.

Among stresses, heat stress (HS) is a prime factor restricting plant growth and productivity. However, the molecular mechanisms of plants' response to HS need to be further uncovered. Here, the transcriptome response of maize seedlings to HS was dissected using transcriptome data analysis. Read More

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Dissecting the trade-off of grain number and size in wheat.

Planta 2021 Jun 12;254(1). Epub 2021 Jun 12.

Division of Plant and Crop Sciences, School of Biosciences, University of Nottingham Sutton Bonington Campus, Loughborough, LE12 5RD, Leicestershire, UK.

Main Conclusion: Principal component and meta-QTL analyses identified genetic loci affecting the trade-off of wheat grain number and size, which could provide opportunities to optimize local breeding strategies for further yield improvement. Grain yield of wheat is complex, and its physiological and genetic bases remain largely unknown. Using the Forno/Oberkulmer recombinant inbred lines, this study validated the negative phenotypic relationships between thousand grain weight (TGW) and grain number components. Read More

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Enhanced Eradication of Mucin-Embedded Bacterial Biofilm by Locally Delivered Antibiotics in Functionalized Microcontainers.

Macromol Biosci 2021 Jun 12:e2100150. Epub 2021 Jun 12.

The Danish National Research Foundation and Villum Foundation's Center for Intelligent Drug Delivery and Sensing Using Microcontainers and Nanomechanics (IDUN), Department of Health Technology, Technical University of Denmark, Ørsteds Plads 345C, Lyngby, 2800 Kgs., Denmark.

Bacterial biofilm-related infections are difficult to eradicate and require repeated treatments with high doses of antibiotics. Thus, there is an urgent need for new treatment strategies that minimize the use of antibiotics while enhancing biofilm eradication. Functionalized reservoir-based microdevices, such as, microcontainers (MCs), offer, high drug loading capacity, mucus embedment, and tuneable drug release. Read More

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Metal Sulfide Photocatalysts for Lignocellulose Valorization.

Adv Mater 2021 Jun 12:e2007129. Epub 2021 Jun 12.

State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, National Engineering Laboratory for Green Chemical Productions of Alcohols, Ethers and Esters, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.

Transition metal sulfides are an extraordinarily vital class of semiconductors with a wide range of applications in the photocatalytic field. A great number of recent advances in photocatalytic transformations of lignocellulosic biomass, the largest renewable carbon resource, into high-quality fuels and value-added chemicals has been achieved over metal sulfide semiconductors. Herein, the progress and breakthroughs in metal-sulfide-based photocatalytic systems for lignocellulose valorization with an emphasis on selective depolymerization of lignin and oxidative coupling of some important bioplatforms are highligted. Read More

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Bioprocess Optimisation for High Cell Density Endoinulinase Production from Recombinant Aspergillus niger.

Appl Biochem Biotechnol 2021 Jun 11. Epub 2021 Jun 11.

Department of Process Engineering, Stellenbosch University, Private Bag X1, Matieland, 7602, South Africa.

Endoinulinase gene was expressed in recombinant Aspergillus niger for selective and high-level expression using an exponential fed-batch fermentation. The effects of the growth rate (μ), glucose feed concentration, nitrogen concentration and fungal morphology on enzyme production were evaluated. A recombinant endoinulinase with a molecular weight of 66 kDa was secreted. Read More

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Ecological criteria for assessing the content of petroleum hydrocarbons in the main soils of coniferous-deciduous forests and forest steppe.

Environ Geochem Health 2021 Jun 12. Epub 2021 Jun 12.

Microbiology and Immunology Department, Perm State University, 15, Bukireva st, Perm, Russia, 614990.

The effect of pollution of Albicluvisols/Retisols, Calcaric Leptosols, Luvic Phaeozems, Greyzamic Phaeozems and Folic Fluvisols with oil (Solovatovsky oil field, Perm region) added in amounts of 1, 2, 3 and 5 g oil/kg of soil on the organisms was studied in a model laboratory experiment. Oil addition showed phytotoxic effects on root length in Triticum aestivum L., Lepidium sativum L. Read More

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Density-dependent plant growth drives grazer stimulation of aboveground net primary production in Yellowstone grasslands.

Oecologia 2021 Jun 11. Epub 2021 Jun 11.

Department of Biology, Syracuse University, Syracuse, NY, USA.

The mechanisms by which grazing animals influence aboveground net primary production (ANPP) in grasslands have long been an area of active research. The prevailing wisdom is that grazing can increase ANPP by increasing the availability of growth-limiting resources such as nitrogen and water, but recent theory suggests that the density-dependent growth of grassland vegetation can lead to grazer-stimulation of ANPP simply by removing shoot biomass and increasing relative growth rate (RGR). We compared the relative roles of resource availability and density-dependent growth in driving positive responses of ANPP to grazing in Yellowstone National Park. Read More

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Determination of Phthalate Esters in Cosmetics and Baby Care Products by a Biosorbent Based on Lawsone Capped Chitosan and Followed by Liquid Chromatography.

J Chromatogr Sci 2021 Jun 11. Epub 2021 Jun 11.

Department of Chemistry, Faculty of Sciences, Ferdowsi University of Mashhad, Azadi Square, 9177948974 Mashhad, Iran.

This research presents a green synthetic pathway for the preparation of a new biosorbent and eco-friendly extraction process of three phthalate esters: dimethyl phthalate, di-butyl phthalate and benzyl butyl phthalate, from cosmetics and baby care products. Dispersive solid-phase extraction was used based on a new core-shell biomass/sorbent; chitosan-loaded lawsone. The proposed method provides fortunate trapping of phthalate esters in a one-step extraction. Read More

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Extra disulfide and ionic salt bridge improves the thermostability of lignin peroxidase H8 under acidic condition.

Enzyme Microb Technol 2021 Aug 22;148:109803. Epub 2021 Apr 22.

Department of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), UNIST-gil 50, Ulsan, 44919, Republic of Korea. Electronic address:

The development of a lignin peroxidase (LiP) that is thermostable even under acidic pH conditions is a main issue for efficient enzymatic lignin degradation due to reduced repolymerization of free phenolic products at acidic pH (< 3). Native LiP under mild conditions (half-life (t) of 8.2 days at pH 6) exhibits a marked decline in thermostability under acidic conditions (t of only 14 min at pH 2. Read More

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Microbial enrichment and meta-omics analysis identify CAZymes from mangrove sediments with unique properties.

Enzyme Microb Technol 2021 Aug 10;148:109820. Epub 2021 May 10.

Programa de Processos Tecnológicos e Ambientais, Universidade de Sorocaba, Sorocaba, Brazil. Electronic address:

Although lignocellulose is the most abundant and renewable natural resource for biofuel production, its use remains under exploration because of its highly recalcitrant structure. Its deconstruction into sugar monomers is mainly driven by carbohydrate-active enzymes (CAZymes). To develop highly efficient and fast strategies to discover biomass-degrading enzymes for biorefinery applications, an enrichment process combined with integrative omics approaches was used to identify new CAZymes. Read More

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Functional expression and characterization of two laccases from the brown rot Fomitopsis pinicola.

Enzyme Microb Technol 2021 Aug 20;148:109801. Epub 2021 Apr 20.

Biocatalysis and Biosensing Laboratory, Department of Food Science and Technology, BOKU - University of Natural Resources and Life Sciences, Muthgasse 18, 1190 Vienna, Austria. Electronic address:

Laccase is predominantly found in lignin degrading filamentous white rot fungi, where it is involved in the oxidative degradation of this recalcitrant heteropolymer. In brown rot fungi it is much less prevalent: laccases from only a few brown rots have been detected and only two have been characterized. This study tries to understand the role of this ligninolytic enzyme in brown rots by investigating the catalytic properties of laccases secreted by Fomitopsis pinicola FP58527 SS1. Read More

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Stability of thylakoid protein complexes and preserving photosynthetic efficiency are crucial for the successful recovery of the halophyte Cakile maritima from high salinity.

Plant Physiol Biochem 2021 May 28;166:177-190. Epub 2021 May 28.

Laboratory of Extremophile Plants, Center of Biotechnology of Borj Cedria, (CBBC), P. O. Box 901, 2050, Hammam-Lif, Tunisia; Department of Plant Proteomics, Institute of Plant Genetics, Leibniz University of Hannover, Herrenhäuser Str. 2, 30419, Hannover, Germany.

Plants native to extreme habitats often face changes in environmental conditions such as salinity level and water availability. In response, plants have evolved efficient mechanisms allowing them to survive or recover. In the present work, effects of high salinity and salt-stress release were studied on the halophyte Cakile maritima. Read More

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Synergistic effects of plant growth promoting rhizobacteria and silicon dioxide nano-particles for amelioration of drought stress in wheat.

Plant Physiol Biochem 2021 Jun 4;166:160-176. Epub 2021 Jun 4.

Department of Botany, S.P. College, Srinagar, Jammu, and Kashmir, India.

Drought tolerant plant growth-promoting rhizobacteria (PGPR) can confer drought tolerance in plants, when inoculated, and this effect can be more pronounced by their combined application with silicon oxide nanoparticles (SiO NPs). In this research, drought-tolerant and plant growth-promoting rhizobacterial strains were isolated from the rhizospheric soil of wheat plants growing in the arid region of Pakistan. Out of 30 isolated strains, three rhizobacterial strains were selected based on their drought tolerance, higher phytohormones (indole acetic acid (IAA), abscisic acid (ABA), and cytokinin (CK), and osmolyte (proline and sugar) production ability. Read More

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Energy balance of torrefied microalgal biomass with production upscale approached by life cycle assessment.

J Environ Manage 2021 Jun 8;294:112992. Epub 2021 Jun 8.

Mechanical Engineering Department, De La Salle University, 2401 Taft Avenue, 0922, Manila, Philippines; Center for Engineering and Sustainable Development Research, De La Salle University, Manila, 0922, Philippines.

Torrefaction is a thermochemical process used to convert the biomass into solid fuel. In this study, torrefaction increased the raw microalgal biomass' energy content from 20.22 MJ⋅kg to 27. Read More

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Hydrogen-rich syngas production from biomass in a steam microwave-induced plasma gasification reactor.

Bioresour Technol 2021 May 24;337:125324. Epub 2021 May 24.

Stopford Projects Ltd, The Gordon Manley Building, Lancaster University, LA1 4YQ, United Kingdom. Electronic address:

Substitution of fossil fuels by sustainable practices must be rapidly implemented to mitigate the impacts of climate change. The conversion of biomass into combustible gas is investigated in a microwave-induced plasma reactor using pure steam as the plasma working gas for the first time. The optimum results are achieved at the highest forward microwave power of 6 kW with biomass carbon conversion efficiency over 98% and complete biomass energy recovery in syngas. Read More

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Bio-electrochemically extracted nitrogen from residual resources for microbial protein production.

Bioresour Technol 2021 Jun 8;337:125353. Epub 2021 Jun 8.

Biomass Energy and Environmental Engineering Research Center, Beijing University of Chemical Technology, Beijing 100029, China; College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China. Electronic address:

Upcycling of nutrients from residual resources for producing microbial protein (MP) is an attractive method to valorize residues. In this study, we investigated bio-electrochemical methods to recover ammonia-N, for further production of MP. Reject water and digestate were used for ammonia-N recovery in microbial fuel cell (MFC) system. Read More

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Environmental risks related to organic compounds from the combustion of paper briquettes in domestic boilers.

J Hazard Mater 2021 Jun 2;418:126291. Epub 2021 Jun 2.

Centre ENET - Energy Units for Utilization of Non-Traditional Energy Sources, VŠB - Technical University of Ostrava, 17. listopadu 15/2172, 708 00 Ostrava-Poruba, Czech Republic. Electronic address:

Environmental risks connected with the combustion of paper/cardboard briquettes are still not sufficiently known. This paper aims to bring attention to the risks related to the utilisation of paper briquettes in local boilers and to characterise these risks by means of the identification of organic compounds in deposits from exhaust flues. The identification of the chemical compounds was performed by pyrolysis gas chromatography with mass spectrometric detection. Read More

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