Bacteria as Biological Control Agents of Plant Diseases

Microorganisms, Journal Year: 2022, Volume and Issue: 10(9), P. 1759 - 1759

Published: Aug. 31, 2022

Biological control is an effective and sustainable alternative or complement to conventional pesticides for fungal bacterial plant disease management. Some of the most intensively studied biological agents are bacteria that can use multiple mechanisms implicated in limitation development, several bacterial-based products have been already registered marketed as biopesticides. However, efforts still required increase commercially available microbial The inconsistency performance biocontrol has limited their extensive commercial agriculture. Pathosystem factors environmental conditions shown be key involved final levels achieved by bacteria. Several biotic abiotic influence agents, affecting action multitrophic interaction between plant, pathogen, This review shows some relevant examples known with especial emphasis on research carried out Spanish groups. In addition, importance screening process steps development highlighted. Besides, improvement approaches future trends considered.

Language: Английский

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Advances and Perspectives in the Use of Biocontrol Agents against Fungal Plant Diseases

Horticulturae, Journal Year: 2022, Volume and Issue: 8(7), P. 577 - 577

Published: June 25, 2022

The use of synthetic fungicides to control fungal diseases has growing limitations due eco-toxicological risks. Therefore, it is necessary replace or integrate high risk chemicals with safer tools for human health and environment. Consequently, research on the selection, evaluation, characterization, biocontrol agents (BCAs) consistently increased in last decades. BCA formulates, particularly some countries, are still scarce coping demand their sustainable agricultural management. To foster development utilization new effective bioformulates, there a need optimize activity, share knowledge formulation processes simplify registration procedures. Studies based molecular can significantly contribute achieve such objectives. present review provides state art plant special emphasis (i) features most studied BCAs; (ii) key strategies selection BCAs (iii); mechanisms action main (iv) metagenomic studies (v) issues constraints commercialization BCAs, (vi) perspectives diseases.

Language: Английский

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Particularities of Fungicides and Factors Affecting Their Fate and Removal Efficacy: A Review

Sustainability, Journal Year: 2022, Volume and Issue: 14(7), P. 4056 - 4056

Published: March 29, 2022

Systemic fungicide use has increased over the last decades, despite susceptibility of resistance development and side effects to human health environment. Although herbicides insecticides are detected more frequently in environmental samples, there many fungicides that have ability enter water bodies due their physicochemical properties increasing use. Key factors affecting fate environment been discussed, including non-target fungicides. For instance, associated with steep decline bumblebee populations. Secondary actions certain on plants also reported recently. In addition, alternative eco-friendly disease management approaches described. Constructed Wetlands (CWs) comprise an environmentally friendly, low cost, efficient remediation technique. Fungicide removal within CWs is dependent plant uptake metabolism, absorption porous media soil, hydrolysis, photodegradation, biodegradation. Factors related efficacy fungicides, such as type CW, species, parameters discussed this paper. There low-environmental-risk phytohormones other compounds, which could improve performance CW vegetation. specific multiple modes action substrate microbial communities endophytes, physiological response were studied. Prospects challenges for future research suggested under prism reducing risk enhancing performance.

Language: Английский

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Plant-Endophyte Interaction during Biotic Stress Management

Plants, Journal Year: 2022, Volume and Issue: 11(17), P. 2203 - 2203

Published: Aug. 25, 2022

Plants interact with diverse microbial communities and share complex relationships each other. The intimate association between microbes their host mutually benefit other provide stability against various biotic abiotic stresses to plants. Endophytes are heterogeneous groups of that live inside the tissue without showing any apparent sign infection. However, functional attributes such as nutrient acquisition, phytohormone modulation, synthesis bioactive compounds, antioxidant enzymes endophytes similar rhizospheric microorganisms. Nevertheless, higher colonization efficacy stress make them superior In recent studies, potential role in bioprospecting has been broadly reported. molecular aspect host-endophyte interactions is still unclear. this study, we have briefly discussed endophyte biology, diversity pattern endophytes. addition, it also summarizes plant-endophyte interaction management.

Language: Английский

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A Look at Plant-Growth-Promoting Bacteria

Plants, Journal Year: 2023, Volume and Issue: 12(8), P. 1668 - 1668

Published: April 17, 2023

Bacteria have been used to increase crop yields. For their application on crops, bacteria are provided in inoculant formulations that continuously changing, with liquid- and solid-based products. for inoculants mainly selected from natural isolates. In nature, microorganisms favor plants exhibit various strategies succeed prevail the rhizosphere, such as biological nitrogen fixation, phosphorus solubilization, siderophore production. On other hand, maintain beneficial microorganisms, exudation of chemoattractanst specific signaling pathways regulate plant–bacteria interactions. Transcriptomic approaches helpful attempting elucidate plant–microorganism Here, we present a review these issues.

Language: Английский

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Biofilms formation in plant growth-promoting bacteria for alleviating agro-environmental stress

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 907, P. 167774 - 167774

Published: Oct. 15, 2023

Language: Английский

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Can biocontrol be the game-changer in integrated pest management? A review of definitions, methods and strategies

Journal of Plant Diseases and Protection, Journal Year: 2024, Volume and Issue: 131(2), P. 265 - 291

Published: Feb. 23, 2024

Abstract Global agriculture is heavily dependent on sustainable plant protection. Worldwide, the concept of integrated pest management (IPM) being followed. IPM utilizes a range strategies, with chemical synthetic pesticides employed only as last resort. However, in agricultural practice, farmers continue to rely primarily this option. To further reduce dependence, new strategies are sought strengthen use biological control within approach including identification novel non-synthetic natural compounds. Here, we discuss and report state art research areas such biocontrol agents application ecological principles. These practices can help establish protection systems, greatest impact achieved when they used appropriate combinations. We highlight conditions that currently prevent or hinder increased measures. On background agroecological experiences, why additional advancements imperative more effectively break life cycles pests, diseases weeds. emphasize significance judicious technologies, adapted local conditions. Additionally, key role expertise operators implementing these their knowledge thereof.

Language: Английский

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Auxin Plays Multiple Roles during Plant–Pathogen Interactions

Cold Spring Harbor Perspectives in Biology, Journal Year: 2021, Volume and Issue: 13(9), P. a040022 - a040022

Published: March 29, 2021

Barbara N. Kunkel and Joshua M.B. Johnson Department of Biology, Washington University in St. Louis, Missouri 63130, USA Correspondence: kunkel{at}wustl.edu

Language: Английский

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The Potential Use of Actinomycetes as Microbial Inoculants and Biopesticides in Agriculture

Frontiers in Soil Science, Journal Year: 2022, Volume and Issue: 2

Published: Feb. 21, 2022

The use of fertilizers and chemical pesticides promotes significant improvements in crop development, but some problems risks associated with them limit their application. An alternative is using biological inputs based on microorganisms, increasing production while combining efficiency sustainability. Actinomycetes are a group bacteria belonging to the phylum Actinobacteria, recently re-named Actinobacteriota. They represent important microbial communities soils agricultural applications, especially control insect-pest plant disease growth promotion. Studies report promising as microbiological inoculants by exploring mechanisms improve such nitrogen fixation, phosphate solubilization, phytohormones, other biocompounds. In addition, many species produce metabolic pathways that generate high-value antibiotics, extracellular enzymes secondary metabolites than antimicrobials, potential phytopathogenic fungi, insects, nematodes. These actinomycetes could be used formulate novel bioinoculants composed spores and/or mycelium. Considering research this field up-and-coming, economic environmental impacts future, review aims most relevant works explore biodiversity actinomycetes, helping develop biodefensives for more productive conscious agriculture.

Language: Английский

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Identification of new antifungal metabolites produced by the yeast Metschnikowia pulcherrima involved in the biocontrol of postharvest plant pathogenic fungi

Postharvest Biology and Technology, Journal Year: 2022, Volume and Issue: 192, P. 111995 - 111995

Published: June 11, 2022

Several strains of the yeast Metschnikowia pulcherrima exhibit strong antagonistic activity against postharvest pathogens and may have broad biotechnological potential as biocontrol agents. However, nature interplay mechanisms contributing to this antifungal are still largely unknown. This study characterizes compounds present in exometabolome two that previously showed an efficient inhibition Botrytis cinerea infection. We show a yeast-fungus co-culture assay is good system examine interaction elucidate produced metabolites. As result, our UPLC-MS/MS analysis identified total 35 differentially secreted metabolites, potentially involved gray mold. Subsequent vitro vivo tomato, grape apple fruit protection assays with such metabolites allowed us identify several new compounds, 3-amino-5-methylhexanoic acid, biphenyl-2,3-diol sinapaldehyde being most active (with up 90–100% reduction infection tomato B. cinerea). In addition, first protected tomatoes Alternaria alternata It was observed these negatively affected cell membrane integrity mycelial morphology increased intracellular level ROS. Furthermore, other unexpected interesting applications were for time by cells, piperideine protoemetine (alkaloids), p-coumaroyl quinic acid (phenylpropanoid), β-rhodomycin (antibiotic), hexadecanedioic (long chain fatty acid) or taurocholic (bile acid). fact highlights M. result from synergistic action molecules.

Language: Английский

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