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Plant growth-promoting rhizobacteria associated with avocado display antagonistic activity against Phytophthora cinnamomi through volatile emissions.

Identifieur interne : 000696 ( Main/Exploration ); précédent : 000695; suivant : 000697

Plant growth-promoting rhizobacteria associated with avocado display antagonistic activity against Phytophthora cinnamomi through volatile emissions.

Auteurs : Alfonso Méndez-Bravo [Mexique] ; Elvis Marian Cortazar-Murillo [Mexique] ; Edgar Guevara-Avenda O [Mexique] ; Oscar Ceballos-Luna [Mexique] ; Benjamín Rodríguez-Haas [Mexique] ; Ana L. Kiel-Martínez [Mexique] ; Orlando Hernández-Crist Bal [Mexique] ; José A. Guerrero-Analco [Mexique] ; Frédérique Reverchon [Mexique]

Source :

RBID : pubmed:29558512

Descripteurs français

English descriptors

Abstract

Rhizobacteria associated with crops constitute an important source of potentially beneficial microorganisms with plant growth promoting activity or antagonistic effects against phytopathogens. In this study, we evaluated the plant growth promoting activity of 11 bacterial isolates that were obtained from the rhizosphere of healthy avocado trees and from that of avocado trees having survived root rot infestations. Seven bacterial isolates, belonging to the genera Bacillus, Pseudomonas and Arthrobacter, promoted in vitro growth of Arabidopsis thaliana. These isolates were then tested for antagonistic activity against Phytophthora cinnamomi, in direct dual culture assays. Two of those rhizobacterial isolates, obtained from symptomatic-declining trees, displayed antagonistic activity. Isolate A8a, which is closely related to Bacillus acidiceler, was also able to inhibit P. cinnamomi growth in vitro by 76% through the production of volatile compounds. Solid phase microextraction (SPME) and analysis by gas chromatography coupled with mass spectrometry (GC-MS) allowed to tentatively identify the main volatiles emitted by isolate A8a as 2,3,5-trimethylpyrazine, 6,10-dimethyl-5,9-undecadien-2-one and 3-amino-1,3-oxazolidin-2-one. These volatile compounds have been reported to show antifungal activity when produced by other bacterial isolates. These results confirm the significance of rhizobacteria and suggest that these bacteria could be used for biocontrol of soil borne oomycetes through their volatiles emissions.

DOI: 10.1371/journal.pone.0194665
PubMed: 29558512
PubMed Central: PMC5860777


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Le document en format XML

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<name sortKey="Rodriguez Haas, Benjamin" sort="Rodriguez Haas, Benjamin" uniqKey="Rodriguez Haas B" first="Benjamín" last="Rodríguez-Haas">Benjamín Rodríguez-Haas</name>
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<name sortKey="Guerrero Analco, Jose A" sort="Guerrero Analco, Jose A" uniqKey="Guerrero Analco J" first="José A" last="Guerrero-Analco">José A. Guerrero-Analco</name>
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<term>Antibiosis (physiology)</term>
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<term>Persea (microbiology)</term>
<term>Phytophthora (drug effects)</term>
<term>Plant Development (drug effects)</term>
<term>Plant Development (physiology)</term>
<term>Plant Roots (drug effects)</term>
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<term>Persea (microbiologie)</term>
<term>Phytophthora (effets des médicaments et des substances chimiques)</term>
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<term>Rhizobiaceae (physiologie)</term>
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<term>Persea</term>
<term>Racines de plante</term>
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<term>Antibiosis</term>
<term>Phytophthora</term>
<term>Plant Development</term>
<term>Plant Roots</term>
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<term>Antibiose</term>
<term>Développement des plantes</term>
<term>Phytophthora</term>
<term>Racines de plante</term>
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<term>Persea</term>
<term>Plant Roots</term>
</keywords>
<keywords scheme="MESH" qualifier="metabolism" xml:lang="en">
<term>Rhizobiaceae</term>
<term>Volatile Organic Compounds</term>
</keywords>
<keywords scheme="MESH" qualifier="microbiologie" xml:lang="fr">
<term>Persea</term>
<term>Racines de plante</term>
</keywords>
<keywords scheme="MESH" qualifier="microbiology" xml:lang="en">
<term>Persea</term>
<term>Plant Roots</term>
</keywords>
<keywords scheme="MESH" qualifier="métabolisme" xml:lang="fr">
<term>Composés organiques volatils</term>
<term>Rhizobiaceae</term>
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<keywords scheme="MESH" qualifier="pharmacologie" xml:lang="fr">
<term>Composés organiques volatils</term>
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<term>Rhizobiaceae</term>
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<term>Rhizosphere</term>
<term>Soil Microbiology</term>
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<term>Microbiologie du sol</term>
<term>Rhizosphère</term>
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<front>
<div type="abstract" xml:lang="en">Rhizobacteria associated with crops constitute an important source of potentially beneficial microorganisms with plant growth promoting activity or antagonistic effects against phytopathogens. In this study, we evaluated the plant growth promoting activity of 11 bacterial isolates that were obtained from the rhizosphere of healthy avocado trees and from that of avocado trees having survived root rot infestations. Seven bacterial isolates, belonging to the genera Bacillus, Pseudomonas and Arthrobacter, promoted in vitro growth of Arabidopsis thaliana. These isolates were then tested for antagonistic activity against Phytophthora cinnamomi, in direct dual culture assays. Two of those rhizobacterial isolates, obtained from symptomatic-declining trees, displayed antagonistic activity. Isolate A8a, which is closely related to Bacillus acidiceler, was also able to inhibit P. cinnamomi growth in vitro by 76% through the production of volatile compounds. Solid phase microextraction (SPME) and analysis by gas chromatography coupled with mass spectrometry (GC-MS) allowed to tentatively identify the main volatiles emitted by isolate A8a as 2,3,5-trimethylpyrazine, 6,10-dimethyl-5,9-undecadien-2-one and 3-amino-1,3-oxazolidin-2-one. These volatile compounds have been reported to show antifungal activity when produced by other bacterial isolates. These results confirm the significance of rhizobacteria and suggest that these bacteria could be used for biocontrol of soil borne oomycetes through their volatiles emissions.</div>
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<ISSN IssnType="Electronic">1932-6203</ISSN>
<JournalIssue CitedMedium="Internet">
<Volume>13</Volume>
<Issue>3</Issue>
<PubDate>
<Year>2018</Year>
</PubDate>
</JournalIssue>
<Title>PloS one</Title>
<ISOAbbreviation>PLoS One</ISOAbbreviation>
</Journal>
<ArticleTitle>Plant growth-promoting rhizobacteria associated with avocado display antagonistic activity against Phytophthora cinnamomi through volatile emissions.</ArticleTitle>
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<MedlinePgn>e0194665</MedlinePgn>
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<ELocationID EIdType="doi" ValidYN="Y">10.1371/journal.pone.0194665</ELocationID>
<Abstract>
<AbstractText>Rhizobacteria associated with crops constitute an important source of potentially beneficial microorganisms with plant growth promoting activity or antagonistic effects against phytopathogens. In this study, we evaluated the plant growth promoting activity of 11 bacterial isolates that were obtained from the rhizosphere of healthy avocado trees and from that of avocado trees having survived root rot infestations. Seven bacterial isolates, belonging to the genera Bacillus, Pseudomonas and Arthrobacter, promoted in vitro growth of Arabidopsis thaliana. These isolates were then tested for antagonistic activity against Phytophthora cinnamomi, in direct dual culture assays. Two of those rhizobacterial isolates, obtained from symptomatic-declining trees, displayed antagonistic activity. Isolate A8a, which is closely related to Bacillus acidiceler, was also able to inhibit P. cinnamomi growth in vitro by 76% through the production of volatile compounds. Solid phase microextraction (SPME) and analysis by gas chromatography coupled with mass spectrometry (GC-MS) allowed to tentatively identify the main volatiles emitted by isolate A8a as 2,3,5-trimethylpyrazine, 6,10-dimethyl-5,9-undecadien-2-one and 3-amino-1,3-oxazolidin-2-one. These volatile compounds have been reported to show antifungal activity when produced by other bacterial isolates. These results confirm the significance of rhizobacteria and suggest that these bacteria could be used for biocontrol of soil borne oomycetes through their volatiles emissions.</AbstractText>
</Abstract>
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<LastName>Méndez-Bravo</LastName>
<ForeName>Alfonso</ForeName>
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<Identifier Source="ORCID">0000-0002-0991-5464</Identifier>
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<Affiliation>CONACYT-Escuela Nacional de Estudios Superiores, Laboratorio Nacional de Análisis y Síntesis Ecológica, Universidad Nacional Autónoma de México; Morelia, Michoacán, México.</Affiliation>
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<LastName>Cortazar-Murillo</LastName>
<ForeName>Elvis Marian</ForeName>
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<Affiliation>Facultad de Ingenierías y Ciencias Químicas, Química Farmacéutica Biológica, Universidad Veracruzana; Xalapa, Veracruz, México.</Affiliation>
</AffiliationInfo>
<AffiliationInfo>
<Affiliation>Red de Estudios Moleculares Avanzados, Instituto de Ecología, A.C.; Xalapa, Veracruz, México.</Affiliation>
</AffiliationInfo>
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<LastName>Guevara-Avendaño</LastName>
<ForeName>Edgar</ForeName>
<Initials>E</Initials>
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<Affiliation>Red de Estudios Moleculares Avanzados, Instituto de Ecología, A.C.; Xalapa, Veracruz, México.</Affiliation>
</AffiliationInfo>
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<LastName>Ceballos-Luna</LastName>
<ForeName>Oscar</ForeName>
<Initials>O</Initials>
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<Affiliation>Red de Estudios Moleculares Avanzados, Instituto de Ecología, A.C.; Xalapa, Veracruz, México.</Affiliation>
</AffiliationInfo>
<AffiliationInfo>
<Affiliation>Facultad de Biología, Universidad Veracruzana; Xalapa, Veracruz, México.</Affiliation>
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<Affiliation>Red de Estudios Moleculares Avanzados, Instituto de Ecología, A.C.; Xalapa, Veracruz, México.</Affiliation>
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<LastName>Kiel-Martínez</LastName>
<ForeName>Ana L</ForeName>
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</AffiliationInfo>
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<LastName>Hernández-Cristóbal</LastName>
<ForeName>Orlando</ForeName>
<Initials>O</Initials>
<AffiliationInfo>
<Affiliation>Escuela Nacional de Estudios Superiores, Laboratorio de Microscopía, Universidad Nacional Autónoma de México; Morelia, Michoacán, México.</Affiliation>
</AffiliationInfo>
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<LastName>Guerrero-Analco</LastName>
<ForeName>José A</ForeName>
<Initials>JA</Initials>
<AffiliationInfo>
<Affiliation>Red de Estudios Moleculares Avanzados, Instituto de Ecología, A.C.; Xalapa, Veracruz, México.</Affiliation>
</AffiliationInfo>
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<LastName>Reverchon</LastName>
<ForeName>Frédérique</ForeName>
<Initials>F</Initials>
<AffiliationInfo>
<Affiliation>Red de Estudios Moleculares Avanzados, Instituto de Ecología, A.C.; Xalapa, Veracruz, México.</Affiliation>
</AffiliationInfo>
</Author>
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<Language>eng</Language>
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<PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType>
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<Year>2018</Year>
<Month>03</Month>
<Day>20</Day>
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<MeshHeading>
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<DescriptorName UI="D063245" MajorTopicYN="N">Plant Development</DescriptorName>
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<QualifierName UI="Q000502" MajorTopicYN="N">physiology</QualifierName>
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<QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName>
<QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName>
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<DescriptorName UI="D058441" MajorTopicYN="Y">Rhizosphere</DescriptorName>
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