Do fungicides used to control Rhizoctonia solani impact the non-target arbuscular mycorrhizal fungus Rhizophagus irregularis?
Identifieur interne : 001692 ( Main/Corpus ); précédent : 001691; suivant : 001693Do fungicides used to control Rhizoctonia solani impact the non-target arbuscular mycorrhizal fungus Rhizophagus irregularis?
Auteurs : Catherine Buysens ; Hervé Dupré De Boulois ; Stéphane DeclerckSource :
- Mycorrhiza [ 1432-1890 ] ; 2015.
English descriptors
- KwdEn :
- MESH :
- chemical , pharmacology : Fungicides, Industrial.
- drug effects : Mycorrhizae, Rhizoctonia, Spores, Fungal.
- microbiology : Plant Roots.
- physiology : Mycorrhizae, Rhizoctonia.
- Dose-Response Relationship, Drug.
Abstract
There is growing evidence that the application of biocontrol organisms (e.g., Pseudomonas and Bacillus spp., arbuscular mycorrhizal fungi-AMF) is a feasible option to reduce incidence of plant pathogens in an integrated control strategy. However, the utilization of these microorganisms, in particular AMF, may be threatened by the application of fungicides, a widely-used measure to control Rhizoctonia solani in various crops among which potato. Prior to their application, it is thus important to determine the impact of fungicides on AMF. The present study investigated, under in vitro controlled conditions, the impact of azoxystrobin (a systemic broad-spectrum fungicide), flutolanil (a systemic Basidiomycota-specific fungicide), and pencycuron (a contact Rhizoctonia-specific fungicide) and their respective formulations (Amistar, Monarch, and Monceren) on the growth and development of the AMF Rhizophagus irregularis MUCL 41833 (spore germination, root colonization, extraradical mycelium development, and spore production) at doses used to control R. solani. Results demonstrated that azoxystrobin and its formulation Amistar, at threshold values for R. solani control (estimated by the half maximal inhibitory concentration, IC50, on a dry weight basis), did not affect spore germination and potato root colonization by R. irregularis, while the development of extra-radical mycelium and spore production was reduced at 10 times the threshold value. Flutolanil and its formulation Monarch at threshold value did not affect spore germination or extra-radical development but decreased root colonization and arbuscule formation. At threshold value, pencycuron and its formulation Monceren, did not affect spore germination and intra- or extraradical development of R. irregularis. These results suggest that azoxystrobin and pencycuron do not affect the AMF at threshold concentrations to control R. solani in vitro, while flutolanil (as formulation) impacts the intraradical phase of the fungus. These fungicides and R. irregularis thus have the potential to be used in parallel against Rhizoctonia disease in potato.
DOI: 10.1007/s00572-014-0610-7
PubMed: 25312740
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Do fungicides used to control Rhizoctonia solani impact the non-target arbuscular mycorrhizal fungus Rhizophagus irregularis?</title><author><name sortKey="Buysens, Catherine" sort="Buysens, Catherine" uniqKey="Buysens C" first="Catherine" last="Buysens">Catherine Buysens</name><affiliation><nlm:affiliation>Earth and Life Institute, Applied Microbiology, Mycology, Université Catholique de Louvain, Croix du Sud, 2 box L7.05.06, 1348, Louvain-la-Neuve, Belgium.</nlm:affiliation></affiliation></author><author><name sortKey="Dupre De Boulois, Herve" sort="Dupre De Boulois, Herve" uniqKey="Dupre De Boulois H" first="Hervé" last="Dupré De Boulois">Hervé Dupré De Boulois</name></author><author><name sortKey="Declerck, Stephane" sort="Declerck, Stephane" uniqKey="Declerck S" first="Stéphane" last="Declerck">Stéphane Declerck</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2015">2015</date><idno type="RBID">pubmed:25312740</idno><idno type="pmid">25312740</idno><idno type="doi">10.1007/s00572-014-0610-7</idno><idno type="wicri:Area/Main/Corpus">001692</idno><idno type="wicri:explorRef" wicri:stream="Main" wicri:step="Corpus" wicri:corpus="PubMed">001692</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Do fungicides used to control Rhizoctonia solani impact the non-target arbuscular mycorrhizal fungus Rhizophagus irregularis?</title><author><name sortKey="Buysens, Catherine" sort="Buysens, Catherine" uniqKey="Buysens C" first="Catherine" last="Buysens">Catherine Buysens</name><affiliation><nlm:affiliation>Earth and Life Institute, Applied Microbiology, Mycology, Université Catholique de Louvain, Croix du Sud, 2 box L7.05.06, 1348, Louvain-la-Neuve, Belgium.</nlm:affiliation></affiliation></author><author><name sortKey="Dupre De Boulois, Herve" sort="Dupre De Boulois, Herve" uniqKey="Dupre De Boulois H" first="Hervé" last="Dupré De Boulois">Hervé Dupré De Boulois</name></author><author><name sortKey="Declerck, Stephane" sort="Declerck, Stephane" uniqKey="Declerck S" first="Stéphane" last="Declerck">Stéphane Declerck</name></author></analytic><series><title level="j">Mycorrhiza</title><idno type="eISSN">1432-1890</idno><imprint><date when="2015" type="published">2015</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Dose-Response Relationship, Drug (MeSH)</term><term>Fungicides, Industrial (pharmacology)</term><term>Mycorrhizae (drug effects)</term><term>Mycorrhizae (physiology)</term><term>Plant Roots (microbiology)</term><term>Rhizoctonia (drug effects)</term><term>Rhizoctonia (physiology)</term><term>Spores, Fungal (drug effects)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="pharmacology" xml:lang="en"><term>Fungicides, Industrial</term></keywords><keywords scheme="MESH" qualifier="drug effects" xml:lang="en"><term>Mycorrhizae</term><term>Rhizoctonia</term><term>Spores, Fungal</term></keywords><keywords scheme="MESH" qualifier="microbiology" xml:lang="en"><term>Plant Roots</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Mycorrhizae</term><term>Rhizoctonia</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Dose-Response Relationship, Drug</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">There is growing evidence that the application of biocontrol organisms (e.g., Pseudomonas and Bacillus spp., arbuscular mycorrhizal fungi-AMF) is a feasible option to reduce incidence of plant pathogens in an integrated control strategy. However, the utilization of these microorganisms, in particular AMF, may be threatened by the application of fungicides, a widely-used measure to control Rhizoctonia solani in various crops among which potato. Prior to their application, it is thus important to determine the impact of fungicides on AMF. The present study investigated, under in vitro controlled conditions, the impact of azoxystrobin (a systemic broad-spectrum fungicide), flutolanil (a systemic Basidiomycota-specific fungicide), and pencycuron (a contact Rhizoctonia-specific fungicide) and their respective formulations (Amistar, Monarch, and Monceren) on the growth and development of the AMF Rhizophagus irregularis MUCL 41833 (spore germination, root colonization, extraradical mycelium development, and spore production) at doses used to control R. solani. Results demonstrated that azoxystrobin and its formulation Amistar, at threshold values for R. solani control (estimated by the half maximal inhibitory concentration, IC50, on a dry weight basis), did not affect spore germination and potato root colonization by R. irregularis, while the development of extra-radical mycelium and spore production was reduced at 10 times the threshold value. Flutolanil and its formulation Monarch at threshold value did not affect spore germination or extra-radical development but decreased root colonization and arbuscule formation. At threshold value, pencycuron and its formulation Monceren, did not affect spore germination and intra- or extraradical development of R. irregularis. These results suggest that azoxystrobin and pencycuron do not affect the AMF at threshold concentrations to control R. solani in vitro, while flutolanil (as formulation) impacts the intraradical phase of the fungus. These fungicides and R. irregularis thus have the potential to be used in parallel against Rhizoctonia disease in potato.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">25312740</PMID><DateCompleted><Year>2016</Year><Month>01</Month><Day>12</Day></DateCompleted><DateRevised><Year>2018</Year><Month>11</Month><Day>13</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1432-1890</ISSN><JournalIssue CitedMedium="Internet"><Volume>25</Volume><Issue>4</Issue><PubDate><Year>2015</Year><Month>May</Month></PubDate></JournalIssue><Title>Mycorrhiza</Title><ISOAbbreviation>Mycorrhiza</ISOAbbreviation></Journal><ArticleTitle>Do fungicides used to control Rhizoctonia solani impact the non-target arbuscular mycorrhizal fungus Rhizophagus irregularis?</ArticleTitle><Pagination><MedlinePgn>277-88</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1007/s00572-014-0610-7</ELocationID><Abstract><AbstractText>There is growing evidence that the application of biocontrol organisms (e.g., Pseudomonas and Bacillus spp., arbuscular mycorrhizal fungi-AMF) is a feasible option to reduce incidence of plant pathogens in an integrated control strategy. However, the utilization of these microorganisms, in particular AMF, may be threatened by the application of fungicides, a widely-used measure to control Rhizoctonia solani in various crops among which potato. Prior to their application, it is thus important to determine the impact of fungicides on AMF. The present study investigated, under in vitro controlled conditions, the impact of azoxystrobin (a systemic broad-spectrum fungicide), flutolanil (a systemic Basidiomycota-specific fungicide), and pencycuron (a contact Rhizoctonia-specific fungicide) and their respective formulations (Amistar, Monarch, and Monceren) on the growth and development of the AMF Rhizophagus irregularis MUCL 41833 (spore germination, root colonization, extraradical mycelium development, and spore production) at doses used to control R. solani. Results demonstrated that azoxystrobin and its formulation Amistar, at threshold values for R. solani control (estimated by the half maximal inhibitory concentration, IC50, on a dry weight basis), did not affect spore germination and potato root colonization by R. irregularis, while the development of extra-radical mycelium and spore production was reduced at 10 times the threshold value. Flutolanil and its formulation Monarch at threshold value did not affect spore germination or extra-radical development but decreased root colonization and arbuscule formation. At threshold value, pencycuron and its formulation Monceren, did not affect spore germination and intra- or extraradical development of R. irregularis. These results suggest that azoxystrobin and pencycuron do not affect the AMF at threshold concentrations to control R. solani in vitro, while flutolanil (as formulation) impacts the intraradical phase of the fungus. These fungicides and R. irregularis thus have the potential to be used in parallel against Rhizoctonia disease in potato.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Buysens</LastName><ForeName>Catherine</ForeName><Initials>C</Initials><AffiliationInfo><Affiliation>Earth and Life Institute, Applied Microbiology, Mycology, Université Catholique de Louvain, Croix du Sud, 2 box L7.05.06, 1348, Louvain-la-Neuve, Belgium.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Dupré de Boulois</LastName><ForeName>Hervé</ForeName><Initials>H</Initials></Author><Author ValidYN="Y"><LastName>Declerck</LastName><ForeName>Stéphane</ForeName><Initials>S</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2014</Year><Month>10</Month><Day>15</Day></ArticleDate></Article><MedlineJournalInfo><Country>Germany</Country><MedlineTA>Mycorrhiza</MedlineTA><NlmUniqueID>100955036</NlmUniqueID><ISSNLinking>0940-6360</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D005659">Fungicides, Industrial</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D004305" MajorTopicYN="N">Dose-Response Relationship, Drug</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D005659" MajorTopicYN="N">Fungicides, Industrial</DescriptorName><QualifierName UI="Q000494" MajorTopicYN="Y">pharmacology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D038821" MajorTopicYN="N">Mycorrhizae</DescriptorName><QualifierName UI="Q000187" MajorTopicYN="Y">drug effects</QualifierName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D018517" MajorTopicYN="N">Plant Roots</DescriptorName><QualifierName UI="Q000382" MajorTopicYN="N">microbiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D012232" MajorTopicYN="N">Rhizoctonia</DescriptorName><QualifierName UI="Q000187" MajorTopicYN="Y">drug effects</QualifierName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D013172" MajorTopicYN="N">Spores, Fungal</DescriptorName><QualifierName UI="Q000187" MajorTopicYN="N">drug effects</QualifierName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2014</Year><Month>07</Month><Day>30</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2014</Year><Month>10</Month><Day>06</Day></PubMedPubDate><PubMedPubDate 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