Genome Mining and Evaluation of the Biocontrol Potential of Pseudomonas fluorescens BRZ63, a New Endophyte of Oilseed Rape ( Brassica napus L.) against Fungal Pathogens

Endophytic bacteria hold tremendous potential for use as biocontrol agents. Our study aimed to investigate the biocontrol activity of BRZ63, a new endophyte of oilseed rape ( L.) against W70, K, K2291, and . In addition, features crucial for biocontrol, plant growth promotion, and colonization were...

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Veröffentlicht in:International journal of molecular sciences 2020-11, Vol.21 (22), p.8740
Hauptverfasser: Chlebek, Daria, Pinski, Artur, Żur, Joanna, Michalska, Justyna, Hupert-Kocurek, Katarzyna
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Pinski, Artur
Żur, Joanna
Michalska, Justyna
Hupert-Kocurek, Katarzyna
description Endophytic bacteria hold tremendous potential for use as biocontrol agents. Our study aimed to investigate the biocontrol activity of BRZ63, a new endophyte of oilseed rape ( L.) against W70, K, K2291, and . In addition, features crucial for biocontrol, plant growth promotion, and colonization were assessed and linked with the genome sequences. The in vitro tests showed that BRZ63 significantly inhibited the mycelium growth of all tested pathogens and stimulated germination and growth of oilseed rape seedlings treated with fungal pathogens. The BRZ63 strain can benefit plants by producing biosurfactants, siderophores, indole-3-acetic acid (IAA), 1-aminocyclopropane-1-carboxylate (ACC) deaminase, and ammonia as well as phosphate solubilization. The abilities of exopolysaccharide production, autoaggregation, and biofilm formation additionally underline its potential to plant colonization and hence biocontrol. The effective colonization properties of the BRZ63 strain were confirmed by microscopy observations of EGFP-expressing cells colonizing the root surface and epidermal cells of Col-0. Genome mining identified many genes related to the biocontrol process, such as transporters, siderophores, and other secondary metabolites. All analyses revealed that the BRZ63 strain is an excellent endophytic candidate for biocontrol of various plant pathogens and plant growth promotion.
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Our study aimed to investigate the biocontrol activity of BRZ63, a new endophyte of oilseed rape ( L.) against W70, K, K2291, and . In addition, features crucial for biocontrol, plant growth promotion, and colonization were assessed and linked with the genome sequences. The in vitro tests showed that BRZ63 significantly inhibited the mycelium growth of all tested pathogens and stimulated germination and growth of oilseed rape seedlings treated with fungal pathogens. The BRZ63 strain can benefit plants by producing biosurfactants, siderophores, indole-3-acetic acid (IAA), 1-aminocyclopropane-1-carboxylate (ACC) deaminase, and ammonia as well as phosphate solubilization. The abilities of exopolysaccharide production, autoaggregation, and biofilm formation additionally underline its potential to plant colonization and hence biocontrol. The effective colonization properties of the BRZ63 strain were confirmed by microscopy observations of EGFP-expressing cells colonizing the root surface and epidermal cells of Col-0. Genome mining identified many genes related to the biocontrol process, such as transporters, siderophores, and other secondary metabolites. 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Pinski, Artur ; Żur, Joanna ; Michalska, Justyna ; Hupert-Kocurek, Katarzyna</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c412t-22face0674e39357d2c652139b54d02d2282eac0c111ac1915e6034c9033cf9a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Acetic acid</topic><topic>Ammonia</topic><topic>Ammonia - metabolism</topic><topic>Ammonia - pharmacology</topic><topic>Arabidopsis - microbiology</topic><topic>Ascomycota - drug effects</topic><topic>Ascomycota - growth &amp; development</topic><topic>Ascomycota - pathogenicity</topic><topic>Bacteria</topic><topic>Bacterial Proteins - classification</topic><topic>Bacterial Proteins - genetics</topic><topic>Bacterial Proteins - metabolism</topic><topic>Biofilms</topic><topic>Biological control</topic><topic>Biological Control Agents - chemistry</topic><topic>Biological Control Agents - metabolism</topic><topic>Biosurfactants</topic><topic>Brassica napus</topic><topic>Brassica napus - microbiology</topic><topic>Carbon-Carbon Lyases - biosynthesis</topic><topic>Carbon-Carbon Lyases - pharmacology</topic><topic>Colletotrichum - drug effects</topic><topic>Colletotrichum - growth &amp; 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source MDPI - Multidisciplinary Digital Publishing Institute; MEDLINE; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; PubMed Central
subjects Acetic acid
Ammonia
Ammonia - metabolism
Ammonia - pharmacology
Arabidopsis - microbiology
Ascomycota - drug effects
Ascomycota - growth & development
Ascomycota - pathogenicity
Bacteria
Bacterial Proteins - classification
Bacterial Proteins - genetics
Bacterial Proteins - metabolism
Biofilms
Biological control
Biological Control Agents - chemistry
Biological Control Agents - metabolism
Biosurfactants
Brassica napus
Brassica napus - microbiology
Carbon-Carbon Lyases - biosynthesis
Carbon-Carbon Lyases - pharmacology
Colletotrichum - drug effects
Colletotrichum - growth & development
Colletotrichum - pathogenicity
Colonization
Data Mining - methods
Endophytes
Endophytes - genetics
Endophytes - metabolism
Enzymes
Exopolysaccharides
Fungi
Fusarium - drug effects
Fusarium - growth & development
Fusarium - pathogenicity
Genome, Bacterial
Genomes
Germination
Hydrocarbons
In vitro methods and tests
Indoleacetic acid
Indoleacetic Acids - metabolism
Indoleacetic Acids - pharmacology
Metabolites
Microorganisms
Motility
Oilseeds
Pathogens
Phylogeny
Plant diseases
Plant Diseases - microbiology
Plant Diseases - prevention & control
Plant Roots - microbiology
Polysaccharides, Bacterial - biosynthesis
Polysaccharides, Bacterial - pharmacology
Pseudomonas fluorescens
Pseudomonas fluorescens - classification
Pseudomonas fluorescens - genetics
Pseudomonas fluorescens - metabolism
Rape plants
Rapeseed
Rhizoctonia - drug effects
Rhizoctonia - growth & development
Rhizoctonia - pathogenicity
Secondary metabolites
Seedlings
Seedlings - microbiology
Seeds
Siderophores
Siderophores - biosynthesis
Siderophores - pharmacology
Solubilization
Surface-Active Agents - metabolism
Surface-Active Agents - pharmacology
Surfactants
title Genome Mining and Evaluation of the Biocontrol Potential of Pseudomonas fluorescens BRZ63, a New Endophyte of Oilseed Rape ( Brassica napus L.) against Fungal Pathogens
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