Association of soybean root mycoflora with root modulation, root necrosis and plant fresh weight
Identifieur interne : 000912 ( Istex/Corpus ); précédent : 000911; suivant : 000913Association of soybean root mycoflora with root modulation, root necrosis and plant fresh weight
Auteurs : G. A. Forbes ; P. DavetSource :
- Annals of Applied Biology [ 0003-4746 ] ; 1991-06.
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Abstract
Fungi were isolated from soybean plants in ten fields in south‐west France. Correspondence analysis (COA) was used to find associations among taxa (species, genera, groups) and sampling units (i.e. one field at one sampling date). The first axis of the COA demonstrated a dominant sampling date effect; the second indicated an association among certain sampling units and specific taxa. Regression analysis of COA coordinate values indicated that fields with high relative isolation frequencies of Fusarium spp., F. oxysporum and ‘other species’ (mostly Chaetomium spp. and sterile fungi) were characterised by greater plant fresh weight and nodule number and lower ratings for root necrosis. Cylindrocarpon spp., Cephalosporium spp. and F. solanihad high relative isolation frequencies in fields with lower plant weight, lower nodule number and higher root necrosis ratings. The relative importance of fungal taxa was also related to soil type.
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DOI: 10.1111/j.1744-7348.1991.tb05343.x
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<affiliationGroup><affiliation xml:id="a1" countryCode="EC"><unparsedAffiliation>International Potato Center (CIP), P.O. Box 16–129‐CEQ, Quito, Ecuador</unparsedAffiliation>
</affiliation>
<affiliation xml:id="a2" countryCode="FR"><unparsedAffiliation>*INRA, Laboratoire de Pathologie Végétale de I'ENSA, 34060 Montpellier, France</unparsedAffiliation>
</affiliation>
</affiliationGroup>
<keywordGroup xml:lang="en"><keyword xml:id="k1">Correspondence analysis</keyword>
<keyword xml:id="k2">soil fungi</keyword>
<keyword xml:id="k3">fungal ecology</keyword>
</keywordGroup>
<abstractGroup><abstract type="main" xml:lang="en"><title type="main">SUMMARY</title>
<p>Fungi were isolated from soybean plants in ten fields in south‐west France. Correspondence analysis (COA) was used to find associations among taxa (species, genera, groups) and sampling units (i.e. one field at one sampling date). The first axis of the COA demonstrated a dominant sampling date effect; the second indicated an association among certain sampling units and specific taxa. Regression analysis of COA coordinate values indicated that fields with high relative isolation frequencies of <i>Fusarium</i>
spp., <i>F. oxysporum</i>
and ‘other species’ (mostly <i>Chaetomium</i>
spp. and sterile fungi) were characterised by greater plant fresh weight and nodule number and lower ratings for root necrosis. <i>Cylindrocarpon</i>
spp., <i>Cephalosporium</i>
spp. and <i>F. solanihad</i>
high relative isolation frequencies in fields with lower plant weight, lower nodule number and higher root necrosis ratings. The relative importance of fungal taxa was also related to soil type.</p>
</abstract>
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<mods version="3.6"><titleInfo lang="en"><title>Association of soybean root mycoflora with root modulation, root necrosis and plant fresh weight</title>
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<titleInfo type="alternative" contentType="CDATA" lang="en"><title>Association of soybean root mycoflora with root modulation, root necrosis and plant fresh weight</title>
</titleInfo>
<name type="personal"><namePart type="given">G. A.</namePart>
<namePart type="family">FORBES</namePart>
<affiliation>International Potato Center (CIP), P.O. Box 16–129‐CEQ, Quito, Ecuador</affiliation>
<role><roleTerm type="text">author</roleTerm>
</role>
</name>
<name type="personal"><namePart type="given">P.</namePart>
<namePart type="family">DAVET</namePart>
<affiliation>*INRA, Laboratoire de Pathologie Végétale de I'ENSA, 34060 Montpellier, France</affiliation>
<role><roleTerm type="text">author</roleTerm>
</role>
</name>
<typeOfResource>text</typeOfResource>
<genre type="article" displayLabel="article"></genre>
<originInfo><publisher>Blackwell Publishing Ltd</publisher>
<place><placeTerm type="text">Oxford, UK</placeTerm>
</place>
<dateIssued encoding="w3cdtf">1991-06</dateIssued>
<edition>Accepted 5 March 1991, Received 16 February 1990</edition>
<copyrightDate encoding="w3cdtf">1991</copyrightDate>
</originInfo>
<language><languageTerm type="code" authority="rfc3066">en</languageTerm>
<languageTerm type="code" authority="iso639-2b">eng</languageTerm>
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<extent unit="references">21</extent>
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<abstract lang="en">Fungi were isolated from soybean plants in ten fields in south‐west France. Correspondence analysis (COA) was used to find associations among taxa (species, genera, groups) and sampling units (i.e. one field at one sampling date). The first axis of the COA demonstrated a dominant sampling date effect; the second indicated an association among certain sampling units and specific taxa. Regression analysis of COA coordinate values indicated that fields with high relative isolation frequencies of Fusarium spp., F. oxysporum and ‘other species’ (mostly Chaetomium spp. and sterile fungi) were characterised by greater plant fresh weight and nodule number and lower ratings for root necrosis. Cylindrocarpon spp., Cephalosporium spp. and F. solanihad high relative isolation frequencies in fields with lower plant weight, lower nodule number and higher root necrosis ratings. The relative importance of fungal taxa was also related to soil type.</abstract>
<subject lang="en"><genre>keywords</genre>
<topic>Correspondence analysis</topic>
<topic>soil fungi</topic>
<topic>fungal ecology</topic>
</subject>
<relatedItem type="host"><titleInfo><title>Annals of Applied Biology</title>
</titleInfo>
<genre type="journal">journal</genre>
<identifier type="ISSN">0003-4746</identifier>
<identifier type="eISSN">1744-7348</identifier>
<identifier type="DOI">10.1111/(ISSN)1744-7348</identifier>
<identifier type="PublisherID">AAB</identifier>
<part><date>1991</date>
<detail type="volume"><caption>vol.</caption>
<number>118</number>
</detail>
<detail type="issue"><caption>no.</caption>
<number>3</number>
</detail>
<extent unit="pages"><start>533</start>
<end>541</end>
<total>9</total>
</extent>
</part>
</relatedItem>
<identifier type="istex">22F1DFED0D07771C74B21CBF64D7A8167F4AFAC6</identifier>
<identifier type="DOI">10.1111/j.1744-7348.1991.tb05343.x</identifier>
<identifier type="ArticleID">AAB533</identifier>
<recordInfo><recordContentSource>WILEY</recordContentSource>
<recordOrigin>Blackwell Publishing Ltd</recordOrigin>
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