912 results match your criteria Allelopathy Journal[Journal]


Effects of the manipulation of submerged macrophytes, large zooplankton, and nutrients on a cyanobacterial bloom: A mesocosm study in a tropical shallow reservoir.

Environ Pollut 2020 Jun 12;265(Pt B):114997. Epub 2020 Jun 12.

Graduate Program in Botany, Department of Biology, Federal Rural University of Pernambuco - UFRPE, Manoel de Medeiros Avenue, Dois Irmãos, CEP 52171-900, Recife, PE, Brazil. Electronic address:

Biomanipulation is an efficient tool to control eutrophication and cyanobacterial blooms in temperate lakes. However, the effects of this technique are still unclear for tropical ecosystems. Herein, we evaluated the effects of the biomanipulation on cyanobacterial biomass in a tropical shallow reservoir in Northeast Brazil. Read More

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http://dx.doi.org/10.1016/j.envpol.2020.114997DOI Listing

Involvement of Allelopathy in the Invasive Potential of .

Plants (Basel) 2020 Jun 19;9(6). Epub 2020 Jun 19.

Department of Applied Biological Science, Faculty of Agriculture, Kagawa University, Miki, Kagawa 761-0795, Japan.

(Hemsl.) A. Gray (Asteraceae) is native to Mexico and Central America. Read More

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http://dx.doi.org/10.3390/plants9060766DOI Listing

Effects of selenium hyperaccumulators on soil selenium distribution and vegetation properties.

Am J Bot 2020 Jun 23. Epub 2020 Jun 23.

Biology Department, Colorado State University, Fort Collins, CO, 80523-1878, USA.

Premise: The ecological implications of hyperaccumulation have been investigated at the organismal level, but are poorly understood at the plant community level. Questions addressed here were: Does the presence of selenium (Se) hyperaccumulators affect Se distribution and concentration in their native soil, and do hyperaccumulators affect overall vegetation properties and species composition?

Methods: Plant survey and soil Se mapping were performed at three seleniferous sites in Colorado. In season one, plots with and without hyperaccumulators were compared for (1) bare ground, canopy cover, and species richness; (2) relative species abundance; (3) soil Se distribution and concentration. Read More

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http://dx.doi.org/10.1002/ajb2.1500DOI Listing

Allelopathic effects of Margalefidinium polykrikoides and Gymnodinium impudicum in the growth of Gymnodinium catenatum.

Harmful Algae 2020 Jun 13;96:101846. Epub 2020 Jun 13.

Instituto Politécnico Nacional. Centro Interdisciplinario de Ciencias Marinas (IPN-CICIMAR), Apartado Postal 592, La Paz, B.C.S. 23000, Mexico.

Harmful algae blooms (HABs) are characterized for the coexistence of phytoplankton species with dynamic and complex biotic interactions (e.g., competition, symbiosis, predation, parasitism, allelopathy), that occur at fine temporal and spatial scales, and are relevant to understand the role that different species of phytoplankton play in the regulation of HABs. Read More

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http://dx.doi.org/10.1016/j.hal.2020.101846DOI Listing

Soil Sickness in Aged Tea Plantation Is Associated With a Shift in Microbial Communities as a Result of Plant Polyphenol Accumulation in the Tea Gardens.

Front Plant Sci 2020 28;11:601. Epub 2020 May 28.

Key Laboratory of Fujian Province for Agroecological Process and Safety Monitoring, College of Life Science, Fujian Agriculture and Forestry University, Fuzhou, China.

In conventional tea plantations, a large amount of pruned material returns to the soil surface, putting a high quantity of polyphenols into the soil. The accumulation of active allelochemicals in the tea rhizosphere and subsequent shift in beneficial microbes may be the cause of acidification, soil sickness, and regeneration problem, which may be attributed to hindrance of plant growth, development, and low yield in long-term monoculture tea plantation. However, the role of pruning leaf litter in soil sickness under consecutive tea monoculture is unclear. Read More

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http://dx.doi.org/10.3389/fpls.2020.00601DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7270330PMC
May 2020
3.637 Impact Factor

Allelopathic Effects of L. var. Sch. Bip. on the Tuber Sprouting and Seedling Growth of L.

Plants (Basel) 2020 Jun 12;9(6). Epub 2020 Jun 12.

Department of Bioenvironmental Systems Engineering, National Taiwan University, Taipei 106, Taiwan.

L. var. Sch. Read More

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http://dx.doi.org/10.3390/plants9060742DOI Listing

[Phospholipase Dα1 and hydrogen sulfide were involved in the allelopathy of oridonin to Arabidopsis thaliana].

Ying Yong Sheng Tai Xue Bao 2020 Mar;31(3):959-968

College of Life Sciences, Northwest Normal University, 730070, Lanzhou, China.

We investigated the signal relationship between phospholipase Dα1 (PLDα1) and the gas signal molecule hydrogen sulfide (HS) in Arabidopsis thaliana response to the allelopathy of diterpenoid oridonin. The wild type Arabidopsis Columbia (WT), phospholipase Dα1 (PLDα1) deletion mutant pldα1, D-/L-cysteine desulfyrase synthetic deletion mutant d-cdes and l-cdes seedlings were used as experiment materials, while 60 μmol·L oridonin was applied as treatment concentration. The results showed that oridonin significantly increased HS content, PLD and D-/L-CDes activities, and gene expressions of PLDα1 and D-/L-CDes in WT. Read More

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http://dx.doi.org/10.13287/j.1001-9332.202003.035DOI Listing

Different phytotoxic effect of Lolium multiflorum Lam. leaves against Echinochloa oryzoides (Ard.) Fritsch and Oriza sativa L.

Environ Sci Pollut Res Int 2020 Jun 11. Epub 2020 Jun 11.

Department of Agricultural and Environmental Sciences, Università degli Studi di Milano, Via G. Celoria 2, 20133, Milan, Italy.

Rice cultivation, particularly prone to weed issues, requires practices able to effectively control them, however reducing the use of herbicides, responsible for damage to human health and ecosystem sustainability. Alternative strategies for weed management can be based on plant-plant interaction phenomena. In this context, a group of organic farmers has developed a pragmatic approach for weed containment using Lolium multiflorum Lam. Read More

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http://dx.doi.org/10.1007/s11356-020-09573-8DOI Listing

Vermicompost of the widespread and toxic xerophyte prosopis (Prosopis juliflora) is a benign organic fertilizer.

J Hazard Mater 2020 May 15;399:122864. Epub 2020 May 15.

Centre for Pollution Control and Environmental Engineering, Pondicherry University, Puducherry, 605014, India. Electronic address:

Prior to the work described in this paper, no report has existed on the use of any xerophyte is generating vermicompost. Now these authors have been able to develop a process with which the highly invasive xerophyte prosopis (Prosopis juliflora) can be vermicomposted. But does prosopis vermicompost (PVC) have any fertilizer value, given that prosopis has strong allelopathy and toxicity? To seek an answer, the authors have assessed the effect of the PVC on the germination and early growth of five common food plants: brinjal (Solanum melongena), chilly (Capsicum annuum), cucumber (Cucumissativus), ladies finger (Abelmoschus esculentus), and tomato (Lycopersicon esculentum). Read More

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http://dx.doi.org/10.1016/j.jhazmat.2020.122864DOI Listing

New Ecological Role of Seaweed Secondary Metabolites as Autotoxic and Allelopathic.

Front Plant Sci 2020 25;11:347. Epub 2020 May 25.

Departamento de Biologia Marinha, Instituto de Biologia, Universidade Federal Fluminense, Niterói, Brazil.

Allelopathy and autotoxicity are well-known biological processes in angiosperms but are very little explored or even unknown in seaweeds. In this study, extract and major pure compounds from two distinct populations of the red seaweed were investigated to evaluate the effect of autotoxicity through auto- and crossed experiments under laboratory conditions, using chlorophyll fluorescence imaging to measure inhibition of photosynthesis (Φ) as a variable response. Individuals of from Azeda beach were inhibited by their own extract (IC = 219 μg/ml) and the major compound elatol (IC = 87 μg/ml); both chemicals also inhibited this seaweed species from Forno beach (IC = 194 μg/ml for the extract and IC = 277 μg/ml for elatol). Read More

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http://dx.doi.org/10.3389/fpls.2020.00347DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7261924PMC

Metabolite profiling of rhizosphere soil of different allelopathic potential rice accessions.

BMC Plant Biol 2020 Jun 9;20(1):265. Epub 2020 Jun 9.

Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, People's Republic of China.

Background: Identification of the allelopathy-interrelated metabolites from the allelopathic rice rhizosphere is crucial to understand the allelopathic mechanism of rice, which in turn can promote its applications to farming. In this study, the metabolites from the rhizosphere soil of five different rice lines, including allelopathic rice accession PI312777 (PI) and non-allelopathic rice accession Lemont (Le) as well as their genetic derivatives (e.g. Read More

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http://dx.doi.org/10.1186/s12870-020-02465-6DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7282037PMC

Features in the NMR spectra of the aglycones of Agave spp. saponins. HMBC method for aglycone identification (HMAI).

Phytochem Anal 2020 Jun 8. Epub 2020 Jun 8.

Allelopathy Group, Department of Organic Chemistry, Institute of Biomolecules (INBIO), Campus de Excelencia Internacional (ceiA3), School of Science, University of Cadiz, Puerto Real, Cadiz, Spain.

Introduction: The analysis and detection of steroidal saponins is mainly performed using chromatographic techniques coupled with mass spectrometry. However, nuclear magnetic resonance (NMR) spectroscopy is a potential tool that can be combined with these techniques to obtain unambiguous structural characterisation.

Objective: This work provides a review of the carbon-13 ( C)- and proton ( H)-NMR spectroscopic data of aglycones from Agave saponins reported in the literature and also the development of an easy identification method for these natural products. Read More

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http://dx.doi.org/10.1002/pca.2946DOI Listing

Interactive effects and competitive shift between Triticum aestivum L. (wheat) and Chenopodium album L. (fat-hen) under ambient and elevated ozone.

Environ Pollut 2020 Jun 1;265(Pt B):114764. Epub 2020 Jun 1.

Laboratory of Air Pollution and Global Climate Change, Department of Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, Uttar Pradesh, India. Electronic address:

The aim of this study was to evaluate the impact of ambient and elevated O (ambient+20 ppb) under the competition between a crop plant Triticum aestivum L.cv. HD 2967 and a weed, Chenopodium album L. Read More

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http://dx.doi.org/10.1016/j.envpol.2020.114764DOI Listing

Effect of allelochemicals on photosynthetic and antioxidant defense system of Ulva prolifera.

Aquat Toxicol 2020 Jul 16;224:105513. Epub 2020 May 16.

University of Maryland Center for Environment Science, Horn Point Laboratory, Cambridge, MD, 21613, USA.

Ulva prolifera is a macroalgae that forms massive blooms, negatively impacting natural communities, aquaculture operations and recreation. The effects of the natural products, eugenol, β-myrcene, citral and nonanoic acid on the growth rate, antioxidative defense system and photosynthesis of Ulva prolifera were investigated as a possible control strategy for this harmful taxon. Negative effects on growth were observed with all four chemicals, due to the excessive production of reactive oxygen species and oxidative damage to the thalli. Read More

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http://dx.doi.org/10.1016/j.aquatox.2020.105513DOI Listing

Evaluation of Allelopathic Activity of Chinese Medicinal Plants and Identification of Shikimic Acid as an Allelochemical from Hook. f.

Plants (Basel) 2020 May 28;9(6). Epub 2020 May 28.

Department of Biological Production Science, United Graduate School of Agriculture, Tokyo University of Agriculture and Technology, Fuchu, Tokyo 183-8509, Japan.

This study focused on the potential allelopathy of 50 species of Chinese medicinal plants, which are mainly distributed in the Xinjiang Uyghur Autonomous Region, Inner Mongolia, and Yunnan Province. The "sandwich method" was adopted and used for the screening for allelopathic potential among these plant species. Further phytotoxic evaluation of the candidate species was conducted by applying plant extracts to crops and weed species. Read More

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http://dx.doi.org/10.3390/plants9060684DOI Listing

Litter decomposition process dramatically declines the allelopathy of L. on the seed germination and seedling growth of L.

Int J Phytoremediation 2020 May 19:1-9. Epub 2020 May 19.

Institute of Environment and Ecology & School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, PR China.

A variety of invasive alien species (IAS) can trigger distinct allelopathy on the seed germination and seedling growth (SGeSGr) of native plant species (NPS) mainly through the released allelochemicals. However, the decomposition process of IAS litters may affect their allelopathy on SGeSGr of NPS because part of the allelochemicals will be released during the litter decomposition process, especially under heavy metal pollution. This study focuses on the impacts of the litter decomposition process of the notorious IAS L. Read More

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http://dx.doi.org/10.1080/15226514.2020.1765140DOI Listing

Effect of Leaf Litter from Cistus ladanifer L. on the Germination and Growth of Accompanying Shrubland Species.

Plants (Basel) 2020 May 7;9(5). Epub 2020 May 7.

Department of Plant Biology, Ecology and Earth Sciences, Faculty of Science, University of Extremadura, 06006 Badajoz, Spain.

Most communities with the presence of are characterised by the low richness of accompanying species, with , in most cases, exceeding 70% of the coverage of woody species. This fact could be due to the allelopathic activity attributed to compounds present in the leaves of , which may have a negative effect on the germination and growth of woody species that share its habitat. One of the possible ways of incorporating allelopathic compounds to the soil is the degradation of leaf litter. Read More

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http://dx.doi.org/10.3390/plants9050593DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7285496PMC

Bryophytes can recognize their neighbours through volatile organic compounds.

Sci Rep 2020 May 4;10(1):7405. Epub 2020 May 4.

Department of Ecology, Swedish University of Agricultural Sciences, P.O. Box 7044, SE-75007, Uppsala, Sweden.

Communication between vascular plants through volatile organic compounds (VOCs) impacts on ecosystem functioning. However, nothing is known about that between non-vascular plants. To investigate plant-plant VOCs interaction in bryophytes we exposed rare peatland moss Hamatocaulis vernicosus to VOCs of its common competitor Sphagnum flexuosum in an air-flow system of connected containers under artificial light, supplemented or unsupplemented by far-red (FR) light. Read More

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http://dx.doi.org/10.1038/s41598-020-64108-yDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7198583PMC

Study of Quantitative Trait Loci (QTLs) Associated with Allelopathic Trait in Rice.

Genes (Basel) 2020 Apr 26;11(5). Epub 2020 Apr 26.

Department of Crop Science, Konkuk University, Seoul 05029, Korea.

In rice there are few genetic studies reported for allelopathy traits, which signify the ability of plants to inhibit or stimulate growth of other plants in the environment, by exuding chemicals. QTL analysis for allelopathic traits were conducted with 98 F8 RILs developed from the cross between the high allelopathic parents of 'Sathi' and non-allelopathic parents of 'Nong-an'. The performance of allelopathic traits were evaluated with inhibition rate on root length, shoot length, total length, root weight, shoot weight, and total weight of lettuce as a receiver plant. Read More

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http://dx.doi.org/10.3390/genes11050470DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7290725PMC

Arguments surrounding the essentiality of boron to vascular plants.

Authors:
Steve P McGrath

New Phytol 2020 Jun;226(5):1225-1227

Sustainable Agriculture Sciences Department, Rothamsted Research, Harpenden, Hertfordshire, AL5 2JQ, UK.

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http://dx.doi.org/10.1111/nph.16575DOI Listing

Synthesis of Vlasouliolides: A Pathway toward Guaiane-Eudesmane C/C Dimers by Photochemical and Michael Additions.

J Org Chem 2020 Jun 12;85(11):7322-7332. Epub 2020 May 12.

Allelopathy Group, Department of Organic Chemistry, Institute of Biomolecules (INBIO), Campus CEIA3, School of Science, University of Cadiz, C/ República Saharaui 7, 11510 Puerto Real, Cádiz, Spain.

is a plant found in China used in traditional medicine. Recent isolation studies have led to the discovery of vlasouliolides, which are natural sesquiterpene dimers. However, the yields obtained from isolation have proven to be really low (<0. Read More

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http://dx.doi.org/10.1021/acs.joc.0c00705DOI Listing

Influence of fine root traits on in situ exudation rates in four conifers from different mycorrhizal associations.

Tree Physiol 2020 Apr 25. Epub 2020 Apr 25.

Faculty of Science, Shinshu University, Japan.

Plant roots can exude organic compounds into the soil that are useful for plant survival because they can degrade microorganisms around the roots and enhance allelopathy against other plant invasions. We developed a method to collect carbon (C) exudation on a small scale from tree fine roots by C-free filter traps. We quantified total C through root exudation in four conifers from different microbial symbiotic groups (ectomycorrhiza (ECM) and arbuscular (AM) mycorrhiza) in a cool-temperate forest in Japan. Read More

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http://dx.doi.org/10.1093/treephys/tpaa051DOI Listing

The Importance of Allelopathic Picocyanobacterium sp. on the Abundance, Biomass Formation, and Structure of Phytoplankton Assemblages in Three Freshwater Lakes.

Toxins (Basel) 2020 Apr 16;12(4). Epub 2020 Apr 16.

Institute of Biology, Pedagogical University of Krakow, Podchorążych 2 St., P-30-084 Kraków, Poland.

The contribution of picocyanobacteria to summer phytoplankton blooms, accompanied by an ecological crisis, is a new phenomenon in Europe. This issue requires careful investigation. We studied allelopathic activity of freshwater picocyanobacterium sp. Read More

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http://dx.doi.org/10.3390/toxins12040259DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7232185PMC

Evidence for resting cyst production in the cosmopolitan toxic dinoflagellate Karlodinium veneficum and the cyst distribution in the China seas.

Harmful Algae 2020 Mar 18;93:101788. Epub 2020 Mar 18.

CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao 266071, China; Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China. Electronic address:

The naked dinoflagellate Karlodinium veneficum is a cosmopolitan and toxic species that frequently forms harmful algal blooms (HABs) in coastal waters. This species has been intensively studied from multiple aspects including toxicology, toxins, nutrition mode (e.g. Read More

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http://dx.doi.org/10.1016/j.hal.2020.101788DOI Listing

A halo of reduced dinoflagellate abundances in and around eelgrass beds.

PeerJ 2020 7;8:e8869. Epub 2020 Apr 7.

School of Marine and Environmental Affairs, University of Washington, Seattle, WA, USA.

Seagrass beds provide a variety of ecosystem services, both within and outside the bounds of the habitat itself. Here we use environmental DNA (eDNA) amplicons to analyze a broad cross-section of taxa from ecological communities in and immediately surrounding eelgrass (). Sampling seawater along transects extending alongshore outward from eelgrass beds, we demonstrate that eDNA provides meter-scale resolution of communities in the field. Read More

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http://dx.doi.org/10.7717/peerj.8869DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7147434PMC

The extract of aquatic macrophyte Carex cinerascens induced colony formation in bloom-forming cyanobacterium Microcystis aeruginosa.

Environ Sci Pollut Res Int 2020 Apr 8. Epub 2020 Apr 8.

Key Laboratory of Poyang Lake Wetland and Watershed Research, Ministry of Education, Jiangxi Normal University, Nanchang, 330022, People's Republic of China.

Colony formation in Microcystis aeruginosa played important roles in blooms formation. To study the effects of plant allelopathy on colony formation in M. aruginosa, unicellular M. Read More

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http://dx.doi.org/10.1007/s11356-020-08651-1DOI Listing

Soil microorganisms interacting with residue-derived allelochemicals effects on seed germination.

Saudi J Biol Sci 2020 Apr 16;27(4):1057-1065. Epub 2020 Jan 16.

College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China.

Despite the knowledge regarding allelopathy, known as a major ecological mechanism for biological weed control, had increased greatly, the role of soil microorganisms in that field remained controversial. The study sought to evaluate the interference potential of soil microorganisms, residues-derived allelochemicals and their interaction on seed germination and understand the variation of microbial community in allelopathic activities. Three different rice residues-derived fractions from variety PI312777 (extracts, straw fraction and fresh residue) were applied to sterile and live soils to disentangle the interference potential of soil microorganisms, residues-derived allelochemicals and their interaction concerned allelopathic activities. Read More

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http://dx.doi.org/10.1016/j.sjbs.2020.01.013DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7105660PMC

Allelopathic Effects of Castanea henryi Aqueous Extracts on the Growth and Physiology of Brassica pekinensis and Zea mays.

Chem Biodivers 2020 Jun 7;17(6):e2000135. Epub 2020 May 7.

Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees of Ministry of Education, Central South University of Forestry and Technology, Changsha, 410004, P. R. China.

The present study investigated the allelopathic effects of aqueous extracts of Castanea henryi litter on the growth and physiological responses of Brassica pekinensis and Zea mays. Treatment with high concentrations of leaf extract (0.05 g/ml for B. Read More

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http://dx.doi.org/10.1002/cbdv.202000135DOI Listing

Biology, ecology and management of Raphanus raphanistrum L.: a noxious agricultural and environmental weed.

Environ Sci Pollut Res Int 2020 May 3;27(15):17692-17705. Epub 2020 Apr 3.

The Centre for Crop Science, Queensland Alliance for Agriculture and Food Innovation (QAAFI), The University of Queensland, Gatton, Queensland, 4343, Australia.

Weeds are a major constraint to crop production and a barrier to human efforts to meet the ever-rising global demand for food, fibre and fuel. Managing weeds solely with herbicides is unsustainable due to the rapid evolution of herbicide-resistant weeds. Precise knowledge of the ecology and biology of weeds is of utmost importance to determine the most appropriate nonchemical management techniques. Read More

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http://dx.doi.org/10.1007/s11356-020-08334-xDOI Listing

Genetically similar temperate phages form coalitions with their shared host that lead to niche-specific fitness effects.

ISME J 2020 Jul 2;14(7):1688-1700. Epub 2020 Apr 2.

Department of Microbiology, University of Tennessee Knoxville, 1311 Cumberland Avenue, 307 Ken and Blaire Mossman Bldg., Knoxville, TN, 37996, USA.

Temperate phages engage in long-term associations with their hosts that may lead to mutually beneficial interactions, of which the full extent is presently unknown. Here, we describe an environmentally relevant model system with a single host, a species of the Roseobacter clade of marine bacteria, and two genetically similar phages (ɸ-A and ɸ-D). Superinfection of a ɸ-D lysogenized strain (CB-D) with ɸ-A particles resulted in a lytic infection, prophage induction, and conversion of a subset of the host population, leading to isolation of a newly ɸ-A lysogenized strain (CB-A). Read More

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http://dx.doi.org/10.1038/s41396-020-0637-zDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7305329PMC

Assessment of the Allelochemical Activity and Biochemical Profile of Different Phenotypes of Picocyanobacteria from the Genus .

Mar Drugs 2020 Mar 27;18(4). Epub 2020 Mar 27.

Division of Marine Ecosystems Functioning, Institute of Oceanography, University of Gdańsk, Av. Piłsudskiego 46, 81-378 Gdynia, Poland.

Organisms belonging to sp. genera are observed in all freshwater, brackish, and marine waters of the world. They play a relevant role in these ecosystems, since they are one of the main primary producers, especially in open ocean. Read More

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http://dx.doi.org/10.3390/md18040179DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7230558PMC

Exogenous strigolactones impact metabolic profiles and phosphate starvation signalling in roots.

Plant Cell Environ 2020 Jul 2;43(7):1655-1668. Epub 2020 Apr 2.

Group of Mycorrhizas, Department of Soil Microbiology and Symbiotic Systems, Estación Experimental del Zaidín (EEZ-CSIC), Granada, Spain.

Strigolactones (SLs) are important ex-planta signalling molecules in the rhizosphere, promoting the association with beneficial microorganisms, but also affecting plant interactions with harmful organisms. They are also plant hormones in-planta, acting as modulators of plant responses under nutrient-deficient conditions, mainly phosphate (Pi) starvation. In the present work, we investigate the potential role of SLs as regulators of early Pi starvation signalling in plants. Read More

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http://dx.doi.org/10.1111/pce.13760DOI Listing
July 2020
6.960 Impact Factor

Some Physiological and Biochemical Mechanisms during Seed-to-Seedling Transition in Tomato as Influenced by Garlic Allelochemicals.

Antioxidants (Basel) 2020 Mar 12;9(3). Epub 2020 Mar 12.

College of Horticulture, Northwest A&F University, Yangling 712100, China.

The effects of aqueous garlic extracts (AGEs), diallyl disulfide (DADS), and allicin (AAS) were investigated during seed-to-seedling transition of tomato. Independent bioassays were performed including seed priming with AGE (0, 100, and 200 µg∙mL), germination under the allelochemical influence of AGE, DADS, and AAS, and germination under volatile application of AGE. Noticeable differences in germination indices and seedling growth (particularly root growth and fresh weights) were observed in a dose-dependent manner. Read More

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http://dx.doi.org/10.3390/antiox9030235DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7139351PMC

Interaction Between Root Exudates of the Poisonous Plant L. and Arbuscular Mycorrhizal Fungi on the Growth of (Trin.) Tzvel.

Microorganisms 2020 Mar 4;8(3). Epub 2020 Mar 4.

Institute of Grassland Science, Northeast Normal University, Changchun 130024, China.

The growth of a large number of poisonous plants is an indicator of grassland degradation. Releasing allelochemicals through root exudates is one of the strategies with which poisonous plants affect neighboring plants in nature. Arbuscular mycorrhizal fungi (AMF) can form a mutualistic symbiosis with most of the higher plants. Read More

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http://dx.doi.org/10.3390/microorganisms8030364DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7142538PMC

Plant Growth Inhibitory Activities and Volatile Active Compounds of 53 Spices and Herbs.

Plants (Basel) 2020 Feb 18;9(2). Epub 2020 Feb 18.

Department of Biological Production Science, United Graduate School of Agriculture, Faculty of Agriculture, Tokyo University of Agriculture and Technology, Fuchu, Tokyo 183-8509, Japan.

The inhibitory activities of the leachates and volatiles from 53 plant species (spices and herbs) were evaluated against lettuce ( "Great Lakes 366") seedling growth using the sandwich and dish pack methods, respectively. With the sandwich method, parsley () showed the strongest inhibitory effect on lettuce radicle growth (77%), followed by tarragon () (72%). However, caraway (), dill () (seed), laurel (), rosemary (), and sage () were the most inhibitory species (100% inhibition of lettuce radicle and hypocotyl growth inhibition at all distance wells) in the dish pack method. Read More

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http://dx.doi.org/10.3390/plants9020264DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7076484PMC
February 2020

Repeatable Stair-step Assay to Access the Allelopathic Potential of Weedy Rice (Oryza sativa ssp.).

J Vis Exp 2020 01 28(155). Epub 2020 Jan 28.

Department of Plant and Soil Science, Mississippi State University;

Weed competition contributes significantly to yield losses in cropping systems worldwide. The evolution of resistance in many weed species to continuously applied herbicides has presented the need for additional management methods. Allelopathy is a physiological process that some plant species possess that provide the plant with an advantage over its neighbors. Read More

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http://dx.doi.org/10.3791/60764DOI Listing
January 2020

Soil organic matter attenuates the efficacy of flavonoid-based plant-microbe communication.

Sci Adv 2020 01 29;6(5):eaax8254. Epub 2020 Jan 29.

Soil and Crop Sciences, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA.

Plant-microbe interactions are mediated by signaling compounds that control vital plant functions, such as nodulation, defense, and allelopathy. While interruption of signaling is typically attributed to biological processes, potential abiotic controls remain less studied. Here, we show that higher organic carbon (OC) contents in soils repress flavonoid signals by up to 70%. Read More

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http://dx.doi.org/10.1126/sciadv.aax8254DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6989149PMC
January 2020

Assessment of allelopathic, cytotoxic, genotoxic and antigenotoxic potential of Smilax brasiliensis Sprengel leaves.

Ecotoxicol Environ Saf 2020 Apr 12;192:110310. Epub 2020 Feb 12.

Campus Centro-Oeste Dona Lindu, Universidade Federal de São João Del-Rei (UFSJ), 35501-296, Divinópolis, MG, Brazil. Electronic address:

Smilax brasiliensis (Smilacaceae) is a native Brazilian plant found in the Cerrado biome and commonly used in folk medicine. The aim of this study was to evaluate the allelopathic, cytotoxic, genotoxic, and antigenotoxic potential of extract and fractions of Smilax brasiliensis leaves. Quercetin and rutin isomers were observed in the subfractions. Read More

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http://dx.doi.org/10.1016/j.ecoenv.2020.110310DOI Listing

Progress and promise of omics for predicting the impacts of climate change on harmful algal blooms.

Harmful Algae 2020 01 8;91:101587. Epub 2019 Jun 8.

Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, United States; Department of Earth and Environmental Sciences, Columbia University, New York, NY, United States. Electronic address:

Climate change is predicted to increase the severity and prevalence of harmful algal blooms (HABs). In the past twenty years, omics techniques such as genomics, transcriptomics, proteomics and metabolomics have transformed that data landscape of many fields including the study of HABs. Advances in technology have facilitated the creation of many publicly available omics datasets that are complementary and shed new light on the mechanisms of HAB formation and toxin production. Read More

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http://dx.doi.org/10.1016/j.hal.2019.03.005DOI Listing
January 2020

Metabolome and Transcriptome Analysis of Hexaploid Roots Reveals its Invasive Capacity Related to Polyploidy.

Genes (Basel) 2020 02 10;11(2). Epub 2020 Feb 10.

College of Life Sciences, Wuhan University, Wuhan 430072, China.

Polyploid plants are more often invasive species than their diploid counterparts. As the invasiveness of a species is often linked to its production of allelopathic compounds, we hypothesize that differences in invasive ability between cytotypes may be due to their different ability to synthesize allelopathic metabolites. We test this using two cytotypes of as the model and use integrated metabolome and transcriptome data to resolve the question. Read More

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http://dx.doi.org/10.3390/genes11020187DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7074301PMC
February 2020

The Interaction between Leaf Allelopathy and Symbiosis with Rhizobium of on Hawaii Island.

Plants (Basel) 2020 Feb 10;9(2). Epub 2020 Feb 10.

Laboratory of Tropical Agriculture, Department of Agriculture, Kyoto University, Kitashirakawa Oiwakecho, Sakyo-ku, Kyoto 606-8502, Japan.

The objective of this study was to assess the magnitudes of the leaf allelopathy of in two different habitats, and discuss the driver of the differences, including rhizobia. The magnitudes of leaf allelopathy of the samples collected in two different habitats were assessed by comparing the hypocotyl and radicle lengths of the lettuce seeds tested on the samples. One habitat was in and adjacent to an forest, while the other was more than 50 m away. Read More

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http://dx.doi.org/10.3390/plants9020226DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7076416PMC
February 2020

Proton-Coupled Electron Transfers of Defense Phytochemicals in Sorghum ( (L.) Moench).

Authors:
Minori Uchimiya

J Agric Food Chem 2020 Feb 21. Epub 2020 Feb 21.

USDA-ARS Southern Regional Research Center , 1100 Robert E. Lee Boulevard , New Orleans , Louisiana 70124 , United States.

Sorghum ( (L.) Moench) produces a range of defense phytochemicals containing a quinone core structure: sorgoleone allelochemical, flavonoid phytoalexins, and a broad spectrum of polyphenols. Those phytochemicals react with the components of cellular and agroecosystems to form stable semiquinone radicals engaging in different proton-coupled electron transfer reactions. Read More

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http://dx.doi.org/10.1021/acs.jafc.9b07816DOI Listing
February 2020

Toxicity and Anti-promastigote Activity of Benzoxazinoid Analogs Against and .

Adv Pharm Bull 2020 Jan 11;10(1):119-124. Epub 2019 Dec 11.

Laboratório de Parasitologia e Doenças Parasitárias, Campus Centro-Oeste Dona Lindu, Universidade Federal de São João Del-Rei (UFSJ), Divinopolis, MG, Brazil.

Here, we aim to evaluate the antileishmanial activity of compounds with a benzoxazinoid (BX) skeleton, previously synthesized by our group, against and promastigotes. Anti-promastigote activity, as well as cytotoxicity, were determined using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) colorimetric assays. The selectivity index (SI) for each compound was calculated using a ratio of the cytotoxicity of compounds and the geometric mean (GM) of antileishmanial concentrations to each species tested. Read More

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http://dx.doi.org/10.15171/apb.2020.015DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6983991PMC
January 2020

The allelopathic effects of aqueous extracts from Spartina alterniflora on controlling the Microcystis aeruginosa blooms.

Sci Total Environ 2020 Apr 26;712:136332. Epub 2019 Dec 26.

College of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China. Electronic address:

The Microcystis aeruginosa (M. aeruginosa) blooms and Spartina alterniflora (S. alterniflora) invasion have caused serious damage to local ecological environment. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2019.136332DOI Listing

Isolation of anti-algal substances from Cylindrotheca closterium and their inhibition activity on bloom-forming Prorocentrum donghaiense.

Ecotoxicol Environ Saf 2020 Mar 8;190:110180. Epub 2020 Jan 8.

Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, 266100, China. Electronic address:

This paper studied the allelopathic effect of Cylindrotheca closterium on the growth of Prorocentrum donghaiense, the model of harmful algal blooms in aquatic environment, by the co-culture tests and bioassay-guided fraction methods. The growth of P. donghaiense in co-cultures was observably suppressed by C. Read More

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http://dx.doi.org/10.1016/j.ecoenv.2020.110180DOI Listing

Biotransformation of Monocyclic Phenolic Compounds by TAB7.

Microorganisms 2019 Dec 21;8(1). Epub 2019 Dec 21.

Biotechnology Research Center, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan.

s strain TAB7 is a bacterium used as a commercial deodorizing agent for compost in Japan. In this work, its ability to biotransform the following monocyclic phenolic compounds was assessed: ferulate, vanillate, -coumarate, caffeate, protocatechuate, syringate, vanillin, and cinnamate (a precursor for some phenolic compounds). These compounds are abundant in composting material and are reported to have allelopathic properties. Read More

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http://dx.doi.org/10.3390/microorganisms8010026DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7022639PMC
December 2019

Allelopathy confers an invasive Wedelia higher resistance to generalist herbivore and pathogen enemies over its native congener.

Oecologia 2020 Feb 21;192(2):415-423. Epub 2019 Dec 21.

Ecology and Evolution Research Centre, School of Biological, Earth and Environmental Sciences, The University of New South Wales, Sydney, NSW, 2052, Australia.

The Novel Defense Hypothesis predicts that introduced plants may possess novel allelochemicals which act as a defense against native generalist enemies. Here, we aim to test if the chemicals involved in allelopathy in the invasive plant Wedelia trilobata can contribute to higher resistance against generalist herbivore and pathogen enemies by comparing with its native congener W. chinensis in controlled laboratory conditions. Read More

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http://dx.doi.org/10.1007/s00442-019-04581-zDOI Listing
February 2020

Allelopathic Plants: Models for Studying Plant-Interkingdom Interactions.

Trends Plant Sci 2020 02 11;25(2):176-185. Epub 2019 Dec 11.

Gregor Mendel Institute of Molecular Plant Biology, Austrian Academy of Sciences, Vienna BioCenter (VBC), Dr. Bohr-Gasse 3, 1030 Vienna, Austria; Institute of Genetics, Faculty of Biology, Biocenter Martinsried, LMU Munich, 82152 Martinsried-Planegg, Germany. Electronic address:

Allelopathy is a biochemical interaction between plants in which a donor plant releases secondary metabolites, allelochemicals, that are detrimental to the growth of its neighbours. Traditionally considered as bilateral interactions between two plants, allelopathy has recently emerged as a cross-kingdom process that can influence and be modulated by the other organisms in the plant's environment. Here, we review the current knowledge on plant-interkingdom interactions, with a particular focus on benzoxazinoids. Read More

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http://dx.doi.org/10.1016/j.tplants.2019.11.004DOI Listing
February 2020

Physiological Effects on Coexisting Microalgae of the Allelochemicals Produced by the Bloom-Forming Cyanobacteria sp. and .

Toxins (Basel) 2019 12 6;11(12). Epub 2019 Dec 6.

Division of Marine Ecosystems Functioning, Institute of Oceanography, University of Gdansk, Avenue Piłsudskiego 46, P-81-378 Gdynia, Poland.

Only a few studies have documented the physiological effects of allelopathy from cyanobacteria against coexisting microalgae. We investigated the allelopathic ability of the bloom-forming cyanobacteria sp. and filtrates on several aspects related to the physiology of the target species: population growth, cell morphology, and several indexes of photosynthesis rate and respiration. Read More

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http://dx.doi.org/10.3390/toxins11120712DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6950133PMC
December 2019

MYB57 transcriptionally regulates MAPK11 to interact with PAL2;3 and modulate rice allelopathy.

J Exp Bot 2020 Mar;71(6):2127-2141

Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China.

Rice allelopathy is a natural method of weed control that is regarded as an eco-friendly practice in agroecology. The allelopathic potential of rice is regulated by various genes, including those that encode transcription factors. Our study characterized a MYB transcription factor, OsMYB57, to explore its role in the regulation of rice allelopathy. Read More

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http://dx.doi.org/10.1093/jxb/erz540DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7242072PMC