Resistance to Melampsora larici-epitea leaf rust in Salix: analyses of quantitative trait loci.
Identifieur interne : 000F28 ( Main/Exploration ); précédent : 000F27; suivant : 000F29Resistance to Melampsora larici-epitea leaf rust in Salix: analyses of quantitative trait loci.
Auteurs : Ann-Christin Rönnberg-W Stljung [Suède] ; Berit Samils ; Vasilios Tsarouhas ; Urban GullbergSource :
- Journal of applied genetics [ 1234-1983 ] ; 2008.
Descripteurs français
- KwdFr :
- MESH :
English descriptors
- KwdEn :
- MESH :
- genetics : Plant Diseases, Plant Leaves, Salix.
- Basidiomycota, Immunity, Innate, Quantitative Trait Loci.
Abstract
Quantitative resistance of Salix to Melampsora larici-epitea leaf rust was studied in 2 Salix mapping populations. One population was a backcross between a S. schwerinii x S. viminalis hybrid and S. viminalis, and the other was an F2 population between S. viminalis and S. dasyclados. A leaf disc bioassay was used to study the components of quantitative resistance (latent period, uredinia number, and uredinia size) to 3 isolates of the leaf rust. The analysis of quantitative trait loci (QTLs) revealed 9 genomic regions in the backcross population and 7 genomic regions in the F2 population that were important for rust resistance, with QTLs explaining 8-26% of the phenotypic variation. An important genomic region was identified for the backcross population in linkage group 2, where QTLs were identified for all resistance components for 2 of the rust isolates. Four of the QTLs had overlapping mapping intervals, demonstrating a common genetic background for latent period, uredinia diameter, and uredinia number. QTLs specific to some rust isolates and to some resistance components were also found, indicating a combination of common and specific mechanisms involved in the various resistance components. Breeding implications in relation to these findings are discussed.
DOI: 10.1007/BF03195630
PubMed: 19029679
Affiliations:
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Samils</name></author><author><name sortKey="Tsarouhas, Vasilios" sort="Tsarouhas, Vasilios" uniqKey="Tsarouhas V" first="Vasilios" last="Tsarouhas">Vasilios Tsarouhas</name></author><author><name sortKey="Gullberg, Urban" sort="Gullberg, Urban" uniqKey="Gullberg U" first="Urban" last="Gullberg">Urban Gullberg</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2008">2008</date><idno type="RBID">pubmed:19029679</idno><idno type="pmid">19029679</idno><idno type="doi">10.1007/BF03195630</idno><idno type="wicri:Area/PubMed/Corpus">000131</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Corpus" wicri:corpus="PubMed">000131</idno><idno type="wicri:Area/PubMed/Curation">000131</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Curation">000131</idno><idno type="wicri:Area/PubMed/Checkpoint">000131</idno><idno type="wicri:explorRef" wicri:stream="Checkpoint" wicri:step="PubMed">000131</idno><idno 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anki.wastljung@vbsg.slu.se</nlm:affiliation><country xml:lang="fr">Suède</country><wicri:regionArea>Department of Plant Biology and Forest Genetics, Swedish University of Agricultural Sciences, Box 7080, SE-750 07 Uppsala</wicri:regionArea><wicri:noRegion>SE-750 07 Uppsala</wicri:noRegion></affiliation></author><author><name sortKey="Samils, Berit" sort="Samils, Berit" uniqKey="Samils B" first="Berit" last="Samils">Berit Samils</name></author><author><name sortKey="Tsarouhas, Vasilios" sort="Tsarouhas, Vasilios" uniqKey="Tsarouhas V" first="Vasilios" last="Tsarouhas">Vasilios Tsarouhas</name></author><author><name sortKey="Gullberg, Urban" sort="Gullberg, Urban" uniqKey="Gullberg U" first="Urban" last="Gullberg">Urban Gullberg</name></author></analytic><series><title level="j">Journal of applied genetics</title><idno type="ISSN">1234-1983</idno><imprint><date when="2008" 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xml:lang="en"><term>Basidiomycota</term><term>Immunity, Innate</term><term>Quantitative Trait Loci</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Basidiomycota</term><term>Immunité innée</term><term>Locus de caractère quantitatif</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Quantitative resistance of Salix to Melampsora larici-epitea leaf rust was studied in 2 Salix mapping populations. One population was a backcross between a S. schwerinii x S. viminalis hybrid and S. viminalis, and the other was an F2 population between S. viminalis and S. dasyclados. A leaf disc bioassay was used to study the components of quantitative resistance (latent period, uredinia number, and uredinia size) to 3 isolates of the leaf rust. The analysis of quantitative trait loci (QTLs) revealed 9 genomic regions in the backcross population and 7 genomic regions in the F2 population that were important for rust resistance, with QTLs explaining 8-26% of the phenotypic variation. An important genomic region was identified for the backcross population in linkage group 2, where QTLs were identified for all resistance components for 2 of the rust isolates. Four of the QTLs had overlapping mapping intervals, demonstrating a common genetic background for latent period, uredinia diameter, and uredinia number. QTLs specific to some rust isolates and to some resistance components were also found, indicating a combination of common and specific mechanisms involved in the various resistance components. Breeding implications in relation to these findings are discussed.</div></front></TEI><affiliations><list><country><li>Suède</li></country></list><tree><noCountry><name sortKey="Gullberg, Urban" sort="Gullberg, Urban" uniqKey="Gullberg U" first="Urban" last="Gullberg">Urban Gullberg</name><name sortKey="Samils, Berit" sort="Samils, Berit" uniqKey="Samils B" first="Berit" last="Samils">Berit Samils</name><name sortKey="Tsarouhas, Vasilios" sort="Tsarouhas, Vasilios" uniqKey="Tsarouhas V" first="Vasilios" last="Tsarouhas">Vasilios Tsarouhas</name></noCountry><country name="Suède"><noRegion><name sortKey="Ronnberg W Stljung, Ann Christin" sort="Ronnberg W Stljung, Ann Christin" uniqKey="Ronnberg W Stljung A" first="Ann-Christin" last="Rönnberg-W Stljung">Ann-Christin Rönnberg-W Stljung</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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