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Dissecting Resistance to Phytophthora cinnamomi in Interspecific Hybrid Chestnut Crosses Using Sequence-Based Genotyping and QTL Mapping.

Identifieur interne : 000536 ( Main/Exploration ); précédent : 000535; suivant : 000537

Dissecting Resistance to Phytophthora cinnamomi in Interspecific Hybrid Chestnut Crosses Using Sequence-Based Genotyping and QTL Mapping.

Auteurs : Tetyana N. Zhebentyayeva [États-Unis] ; Paul H. Sisco [États-Unis] ; Laura L. Georgi [États-Unis] ; Steven N. Jeffers [États-Unis] ; M Taylor Perkins [États-Unis] ; Joseph B. James [États-Unis] ; Frederick V. Hebard [États-Unis] ; Christopher Saski [États-Unis] ; C Dana Nelson [États-Unis] ; Albert G. Abbott [États-Unis]

Source :

RBID : pubmed:31287366

Descripteurs français

English descriptors

Abstract

The soilborne oomycete Phytophthora cinnamomi-which causes root rot, trunk cankers, and stem lesions on an estimated 5,000 plant species worldwide-is a lethal pathogen of American chestnut (Castanea dentata) as well as many other woody plant species. P. cinnamomi is particularly damaging to chestnut and chinquapin trees (Castanea spp.) in the southern portion of its native range in the United States due to relatively mild climatic conditions that are conductive to disease development. Introduction of resistant genotypes is the most practical solution for disease management in forests because treatment with fungicides and eradication of the pathogen are neither practical nor economically feasible in natural ecosystems. Using backcross families derived from crosses of American chestnuts with two resistant Chinese chestnut cultivars Mahogany and Nanking, we constructed linkage maps and identified quantitative trait loci (QTLs) for resistance to P. cinnamomi that had been introgressed from these Chinese chestnut cultivars. In total, 957 plants representing five cohorts of three hybrid crosses were genotyped by sequencing and phenotyped by standardized inoculation and visual examination over a 6-year period from 2011 to 2016. Eight parental linkage maps comprising 7,715 markers were constructed, and 17 QTLs were identified on four linkage groups (LGs): LG_A, LG_C, LG_E, and LG_K. The most consistent QTLs were detected on LG_E in seedlings from crosses with both 'Mahogany' and 'Nanking' and LG_K in seedlings from 'Mahogany' crosses. Two consistent large and medium effect QTLs located ∼10 cM apart were present in the middle and at the lower end of LG_E; other QTLs were considered to have small effects. These results imply that the genetic architecture of resistance to P. cinnamomi in Chinese chestnut × American chestnut hybrid progeny may resemble the P. sojae-soybean pathosystem, with a few dominant QTLs along with quantitatively inherited partial resistance conferred by multiple small-effect QTLs.

DOI: 10.1094/PHYTO-11-18-0425-R
PubMed: 31287366


Affiliations:


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Le document en format XML

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<term>Chromosome Mapping (MeSH)</term>
<term>Crosses, Genetic (MeSH)</term>
<term>Ecosystem (MeSH)</term>
<term>Genotype (MeSH)</term>
<term>Phytophthora (pathogenicity)</term>
<term>Plant Diseases (MeSH)</term>
</keywords>
<keywords scheme="KwdFr" xml:lang="fr">
<term>Cartographie chromosomique (MeSH)</term>
<term>Croisements génétiques (MeSH)</term>
<term>Génotype (MeSH)</term>
<term>Maladies des plantes (MeSH)</term>
<term>Phytophthora (pathogénicité)</term>
<term>Écosystème (MeSH)</term>
</keywords>
<keywords scheme="MESH" qualifier="pathogenicity" xml:lang="en">
<term>Phytophthora</term>
</keywords>
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<term>Phytophthora</term>
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<term>Chromosome Mapping</term>
<term>Crosses, Genetic</term>
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<term>Genotype</term>
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<term>Cartographie chromosomique</term>
<term>Croisements génétiques</term>
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<front>
<div type="abstract" xml:lang="en">The soilborne oomycete
<i>Phytophthora cinnamomi</i>
-which causes root rot, trunk cankers, and stem lesions on an estimated 5,000 plant species worldwide-is a lethal pathogen of American chestnut (
<i>Castanea dentata</i>
) as well as many other woody plant species.
<i>P. cinnamomi</i>
is particularly damaging to chestnut and chinquapin trees (
<i>Castanea</i>
spp.) in the southern portion of its native range in the United States due to relatively mild climatic conditions that are conductive to disease development. Introduction of resistant genotypes is the most practical solution for disease management in forests because treatment with fungicides and eradication of the pathogen are neither practical nor economically feasible in natural ecosystems. Using backcross families derived from crosses of American chestnuts with two resistant Chinese chestnut cultivars Mahogany and Nanking, we constructed linkage maps and identified quantitative trait loci (QTLs) for resistance to
<i>P. cinnamomi</i>
that had been introgressed from these Chinese chestnut cultivars. In total, 957 plants representing five cohorts of three hybrid crosses were genotyped by sequencing and phenotyped by standardized inoculation and visual examination over a 6-year period from 2011 to 2016. Eight parental linkage maps comprising 7,715 markers were constructed, and 17 QTLs were identified on four linkage groups (LGs): LG_A, LG_C, LG_E, and LG_K. The most consistent QTLs were detected on LG_E in seedlings from crosses with both 'Mahogany' and 'Nanking' and LG_K in seedlings from 'Mahogany' crosses. Two consistent large and medium effect QTLs located ∼10 cM apart were present in the middle and at the lower end of LG_E; other QTLs were considered to have small effects. These results imply that the genetic architecture of resistance to
<i>P. cinnamomi</i>
in Chinese chestnut × American chestnut hybrid progeny may resemble the
<i>P. sojae</i>
-soybean pathosystem, with a few dominant QTLs along with quantitatively inherited partial resistance conferred by multiple small-effect QTLs.</div>
</front>
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<Month>09</Month>
<Day>18</Day>
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<Year>2019</Year>
<Month>09</Month>
<Day>18</Day>
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<Volume>109</Volume>
<Issue>9</Issue>
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<Year>2019</Year>
<Month>Sep</Month>
</PubDate>
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<Title>Phytopathology</Title>
<ISOAbbreviation>Phytopathology</ISOAbbreviation>
</Journal>
<ArticleTitle>Dissecting Resistance to
<i>Phytophthora cinnamomi</i>
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<Pagination>
<MedlinePgn>1594-1604</MedlinePgn>
</Pagination>
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<Abstract>
<AbstractText>The soilborne oomycete
<i>Phytophthora cinnamomi</i>
-which causes root rot, trunk cankers, and stem lesions on an estimated 5,000 plant species worldwide-is a lethal pathogen of American chestnut (
<i>Castanea dentata</i>
) as well as many other woody plant species.
<i>P. cinnamomi</i>
is particularly damaging to chestnut and chinquapin trees (
<i>Castanea</i>
spp.) in the southern portion of its native range in the United States due to relatively mild climatic conditions that are conductive to disease development. Introduction of resistant genotypes is the most practical solution for disease management in forests because treatment with fungicides and eradication of the pathogen are neither practical nor economically feasible in natural ecosystems. Using backcross families derived from crosses of American chestnuts with two resistant Chinese chestnut cultivars Mahogany and Nanking, we constructed linkage maps and identified quantitative trait loci (QTLs) for resistance to
<i>P. cinnamomi</i>
that had been introgressed from these Chinese chestnut cultivars. In total, 957 plants representing five cohorts of three hybrid crosses were genotyped by sequencing and phenotyped by standardized inoculation and visual examination over a 6-year period from 2011 to 2016. Eight parental linkage maps comprising 7,715 markers were constructed, and 17 QTLs were identified on four linkage groups (LGs): LG_A, LG_C, LG_E, and LG_K. The most consistent QTLs were detected on LG_E in seedlings from crosses with both 'Mahogany' and 'Nanking' and LG_K in seedlings from 'Mahogany' crosses. Two consistent large and medium effect QTLs located ∼10 cM apart were present in the middle and at the lower end of LG_E; other QTLs were considered to have small effects. These results imply that the genetic architecture of resistance to
<i>P. cinnamomi</i>
in Chinese chestnut × American chestnut hybrid progeny may resemble the
<i>P. sojae</i>
-soybean pathosystem, with a few dominant QTLs along with quantitatively inherited partial resistance conferred by multiple small-effect QTLs.</AbstractText>
</Abstract>
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<Affiliation>Department of Ecosystem Science and Management, The Pennsylvania State University, University Park, PA 16802.</Affiliation>
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</AffiliationInfo>
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<Initials>MT</Initials>
<AffiliationInfo>
<Affiliation>Department of Biology, Geology, and Environmental Science, University of Tennessee at Chattanooga, Chattanooga, TN 37403.</Affiliation>
</AffiliationInfo>
</Author>
<Author ValidYN="Y">
<LastName>James</LastName>
<ForeName>Joseph B</ForeName>
<Initials>JB</Initials>
<AffiliationInfo>
<Affiliation>Chestnut Return Farms, Seneca, SC 29678.</Affiliation>
</AffiliationInfo>
</Author>
<Author ValidYN="Y">
<LastName>Hebard</LastName>
<ForeName>Frederick V</ForeName>
<Initials>FV</Initials>
<AffiliationInfo>
<Affiliation>Meadowview Research Farms, The American Chestnut Foundation, Meadowview, VA 24361.</Affiliation>
</AffiliationInfo>
</Author>
<Author ValidYN="Y">
<LastName>Saski</LastName>
<ForeName>Christopher</ForeName>
<Initials>C</Initials>
<AffiliationInfo>
<Affiliation>Department of Plant and Environmental Sciences, Clemson University, Clemson, SC 29634.</Affiliation>
</AffiliationInfo>
</Author>
<Author ValidYN="Y">
<LastName>Nelson</LastName>
<ForeName>C Dana</ForeName>
<Initials>CD</Initials>
<AffiliationInfo>
<Affiliation>Southern Institute of Forest Genetics, Southern Research Station, U.S. Department of Agriculture Forest Service, Saucier, MS 39574.</Affiliation>
</AffiliationInfo>
<AffiliationInfo>
<Affiliation>Forest Health Research and Education Center, University of Kentucky, Lexington, KY 40546.</Affiliation>
</AffiliationInfo>
</Author>
<Author ValidYN="Y">
<LastName>Abbott</LastName>
<ForeName>Albert G</ForeName>
<Initials>AG</Initials>
<AffiliationInfo>
<Affiliation>Forest Health Research and Education Center, University of Kentucky, Lexington, KY 40546.</Affiliation>
</AffiliationInfo>
</Author>
</AuthorList>
<Language>eng</Language>
<PublicationTypeList>
<PublicationType UI="D016428">Journal Article</PublicationType>
</PublicationTypeList>
<ArticleDate DateType="Electronic">
<Year>2019</Year>
<Month>07</Month>
<Day>09</Day>
</ArticleDate>
</Article>
<MedlineJournalInfo>
<Country>United States</Country>
<MedlineTA>Phytopathology</MedlineTA>
<NlmUniqueID>9427222</NlmUniqueID>
<ISSNLinking>0031-949X</ISSNLinking>
</MedlineJournalInfo>
<CitationSubset>IM</CitationSubset>
<MeshHeadingList>
<MeshHeading>
<DescriptorName UI="D002874" MajorTopicYN="N">Chromosome Mapping</DescriptorName>
</MeshHeading>
<MeshHeading>
<DescriptorName UI="D003433" MajorTopicYN="N">Crosses, Genetic</DescriptorName>
</MeshHeading>
<MeshHeading>
<DescriptorName UI="D017753" MajorTopicYN="N">Ecosystem</DescriptorName>
</MeshHeading>
<MeshHeading>
<DescriptorName UI="D005838" MajorTopicYN="N">Genotype</DescriptorName>
</MeshHeading>
<MeshHeading>
<DescriptorName UI="D010838" MajorTopicYN="Y">Phytophthora</DescriptorName>
<QualifierName UI="Q000472" MajorTopicYN="N">pathogenicity</QualifierName>
</MeshHeading>
<MeshHeading>
<DescriptorName UI="D010935" MajorTopicYN="N">Plant Diseases</DescriptorName>
</MeshHeading>
</MeshHeadingList>
<KeywordList Owner="NOTNLM">
<Keyword MajorTopicYN="N">analytical plant pathology</Keyword>
<Keyword MajorTopicYN="N">theoretical plant pathology</Keyword>
</KeywordList>
</MedlineCitation>
<PubmedData>
<History>
<PubMedPubDate PubStatus="pubmed">
<Year>2019</Year>
<Month>7</Month>
<Day>10</Day>
<Hour>6</Hour>
<Minute>0</Minute>
</PubMedPubDate>
<PubMedPubDate PubStatus="medline">
<Year>2019</Year>
<Month>9</Month>
<Day>19</Day>
<Hour>6</Hour>
<Minute>0</Minute>
</PubMedPubDate>
<PubMedPubDate PubStatus="entrez">
<Year>2019</Year>
<Month>7</Month>
<Day>10</Day>
<Hour>6</Hour>
<Minute>0</Minute>
</PubMedPubDate>
</History>
<PublicationStatus>ppublish</PublicationStatus>
<ArticleIdList>
<ArticleId IdType="pubmed">31287366</ArticleId>
<ArticleId IdType="doi">10.1094/PHYTO-11-18-0425-R</ArticleId>
</ArticleIdList>
</PubmedData>
</pubmed>
<affiliations>
<list>
<country>
<li>États-Unis</li>
</country>
<region>
<li>Caroline du Sud</li>
<li>Kentucky</li>
<li>Pennsylvanie</li>
<li>Tennessee</li>
<li>Virginie</li>
<li>État du Mississippi</li>
</region>
</list>
<tree>
<country name="États-Unis">
<region name="Pennsylvanie">
<name sortKey="Zhebentyayeva, Tetyana N" sort="Zhebentyayeva, Tetyana N" uniqKey="Zhebentyayeva T" first="Tetyana N" last="Zhebentyayeva">Tetyana N. Zhebentyayeva</name>
</region>
<name sortKey="Abbott, Albert G" sort="Abbott, Albert G" uniqKey="Abbott A" first="Albert G" last="Abbott">Albert G. Abbott</name>
<name sortKey="Georgi, Laura L" sort="Georgi, Laura L" uniqKey="Georgi L" first="Laura L" last="Georgi">Laura L. Georgi</name>
<name sortKey="Hebard, Frederick V" sort="Hebard, Frederick V" uniqKey="Hebard F" first="Frederick V" last="Hebard">Frederick V. Hebard</name>
<name sortKey="James, Joseph B" sort="James, Joseph B" uniqKey="James J" first="Joseph B" last="James">Joseph B. James</name>
<name sortKey="Jeffers, Steven N" sort="Jeffers, Steven N" uniqKey="Jeffers S" first="Steven N" last="Jeffers">Steven N. Jeffers</name>
<name sortKey="Nelson, C Dana" sort="Nelson, C Dana" uniqKey="Nelson C" first="C Dana" last="Nelson">C Dana Nelson</name>
<name sortKey="Nelson, C Dana" sort="Nelson, C Dana" uniqKey="Nelson C" first="C Dana" last="Nelson">C Dana Nelson</name>
<name sortKey="Perkins, M Taylor" sort="Perkins, M Taylor" uniqKey="Perkins M" first="M Taylor" last="Perkins">M Taylor Perkins</name>
<name sortKey="Saski, Christopher" sort="Saski, Christopher" uniqKey="Saski C" first="Christopher" last="Saski">Christopher Saski</name>
<name sortKey="Sisco, Paul H" sort="Sisco, Paul H" uniqKey="Sisco P" first="Paul H" last="Sisco">Paul H. Sisco</name>
<name sortKey="Zhebentyayeva, Tetyana N" sort="Zhebentyayeva, Tetyana N" uniqKey="Zhebentyayeva T" first="Tetyana N" last="Zhebentyayeva">Tetyana N. Zhebentyayeva</name>
</country>
</tree>
</affiliations>
</record>

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