Abundant Pathogenic Variation in the New Hybrid Rust Melampsora xcolumbiana on Hybrid Poplar.
Identifieur interne : 000100 ( Main/Exploration ); précédent : 000099; suivant : 000101Abundant Pathogenic Variation in the New Hybrid Rust Melampsora xcolumbiana on Hybrid Poplar.
Auteurs : G. Newcombe ; B. Stirling ; H D BradshawSource :
- Phytopathology [ 0031-949X ] ; 2001.
Abstract
ABSTRACT The recently described rust hybrid Melampsora xcolumbiana was discovered as a result of its novel pathogenic variation on Populus trichocarpa x P. deltoides (TxD) hybrid poplar. To characterize this pathogenic variation, 10 commercial TxD clones, all F(1) clones, were chosen as host differentials. Fourteen mononuredinial isolates of Pacific Northwestern field collections of M. xcolumbiana, from 1996 to 1998 inclusive, were determined to be 13 distinct pathotypes. In contrast, four Southeastern isolates of M. medusae could not be distinguished on the same TxD host differentials, although they can be distinguished as pathotypes using P. deltoides differentials. The first three pathotypes of M. xcolumbiana (Mxc1, Mxc2, and Mxc3) and a Mississippi isolate of M. medusae were inoculated onto a three-generation TxD pedigree, formerly used to characterize the Mmd1 gene for resistance to M. medusae. Resistance to the Mxc3 pathotype mapped to the same linkage group (group Q) as the Mmd1 gene. In contrast, linked genes for resistance to Mxc1 and to Mxc2 were located on linkage group O, and were unlike Mmd1 and Mxc3 in that they were inherited from P. deltoides. The latter two genes resembled Mmd1 and Mxc3 in that infection type was correlated with quantitative traits such as uredinial density and latent period. Pathogenic variation in M. xcolumbiana matches resistance genes from both P. trichocarpa and P. deltoides and reveals the vulnerability to hybrid rust of commercial TxD hybrid poplar clones.
DOI: 10.1094/PHYTO.2001.91.10.981
PubMed: 18944125
Affiliations:
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Newcombe</name></author><author><name sortKey="Stirling, B" sort="Stirling, B" uniqKey="Stirling B" first="B" last="Stirling">B. Stirling</name></author><author><name sortKey="Bradshaw, H D" sort="Bradshaw, H D" uniqKey="Bradshaw H" first="H D" last="Bradshaw">H D Bradshaw</name></author></analytic><series><title level="j">Phytopathology</title><idno type="ISSN">0031-949X</idno><imprint><date when="2001" type="published">2001</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">ABSTRACT The recently described rust hybrid Melampsora xcolumbiana was discovered as a result of its novel pathogenic variation on Populus trichocarpa x P. deltoides (TxD) hybrid poplar. To characterize this pathogenic variation, 10 commercial TxD clones, all F(1) clones, were chosen as host differentials. Fourteen mononuredinial isolates of Pacific Northwestern field collections of M. xcolumbiana, from 1996 to 1998 inclusive, were determined to be 13 distinct pathotypes. In contrast, four Southeastern isolates of M. medusae could not be distinguished on the same TxD host differentials, although they can be distinguished as pathotypes using P. deltoides differentials. The first three pathotypes of M. xcolumbiana (Mxc1, Mxc2, and Mxc3) and a Mississippi isolate of M. medusae were inoculated onto a three-generation TxD pedigree, formerly used to characterize the Mmd1 gene for resistance to M. medusae. Resistance to the Mxc3 pathotype mapped to the same linkage group (group Q) as the Mmd1 gene. In contrast, linked genes for resistance to Mxc1 and to Mxc2 were located on linkage group O, and were unlike Mmd1 and Mxc3 in that they were inherited from P. deltoides. The latter two genes resembled Mmd1 and Mxc3 in that infection type was correlated with quantitative traits such as uredinial density and latent period. Pathogenic variation in M. xcolumbiana matches resistance genes from both P. trichocarpa and P. deltoides and reveals the vulnerability to hybrid rust of commercial TxD hybrid poplar clones.</div></front></TEI><pubmed><MedlineCitation Status="PubMed-not-MEDLINE" Owner="NLM"><PMID Version="1">18944125</PMID><DateCompleted><Year>2012</Year><Month>10</Month><Day>02</Day></DateCompleted><DateRevised><Year>2008</Year><Month>10</Month><Day>23</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">0031-949X</ISSN><JournalIssue CitedMedium="Print"><Volume>91</Volume><Issue>10</Issue><PubDate><Year>2001</Year><Month>Oct</Month></PubDate></JournalIssue><Title>Phytopathology</Title><ISOAbbreviation>Phytopathology</ISOAbbreviation></Journal><ArticleTitle>Abundant Pathogenic Variation in the New Hybrid Rust Melampsora xcolumbiana on Hybrid Poplar.</ArticleTitle><Pagination><MedlinePgn>981-5</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1094/PHYTO.2001.91.10.981</ELocationID><Abstract><AbstractText>ABSTRACT The recently described rust hybrid Melampsora xcolumbiana was discovered as a result of its novel pathogenic variation on Populus trichocarpa x P. deltoides (TxD) hybrid poplar. To characterize this pathogenic variation, 10 commercial TxD clones, all F(1) clones, were chosen as host differentials. Fourteen mononuredinial isolates of Pacific Northwestern field collections of M. xcolumbiana, from 1996 to 1998 inclusive, were determined to be 13 distinct pathotypes. In contrast, four Southeastern isolates of M. medusae could not be distinguished on the same TxD host differentials, although they can be distinguished as pathotypes using P. deltoides differentials. The first three pathotypes of M. xcolumbiana (Mxc1, Mxc2, and Mxc3) and a Mississippi isolate of M. medusae were inoculated onto a three-generation TxD pedigree, formerly used to characterize the Mmd1 gene for resistance to M. medusae. Resistance to the Mxc3 pathotype mapped to the same linkage group (group Q) as the Mmd1 gene. In contrast, linked genes for resistance to Mxc1 and to Mxc2 were located on linkage group O, and were unlike Mmd1 and Mxc3 in that they were inherited from P. deltoides. The latter two genes resembled Mmd1 and Mxc3 in that infection type was correlated with quantitative traits such as uredinial density and latent period. Pathogenic variation in M. xcolumbiana matches resistance genes from both P. trichocarpa and P. deltoides and reveals the vulnerability to hybrid rust of commercial TxD hybrid poplar clones.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Newcombe</LastName><ForeName>G</ForeName><Initials>G</Initials></Author><Author ValidYN="Y"><LastName>Stirling</LastName><ForeName>B</ForeName><Initials>B</Initials></Author><Author ValidYN="Y"><LastName>Bradshaw</LastName><ForeName>H D</ForeName><Initials>HD</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>Phytopathology</MedlineTA><NlmUniqueID>9427222</NlmUniqueID><ISSNLinking>0031-949X</ISSNLinking></MedlineJournalInfo></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>2008</Year><Month>10</Month><Day>24</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2008</Year><Month>10</Month><Day>24</Day><Hour>9</Hour><Minute>1</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2008</Year><Month>10</Month><Day>24</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">18944125</ArticleId><ArticleId IdType="doi">10.1094/PHYTO.2001.91.10.981</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list></list><tree><noCountry><name sortKey="Bradshaw, H D" sort="Bradshaw, H D" uniqKey="Bradshaw H" first="H D" last="Bradshaw">H D Bradshaw</name><name sortKey="Newcombe, G" sort="Newcombe, G" uniqKey="Newcombe G" first="G" last="Newcombe">G. Newcombe</name><name sortKey="Stirling, B" sort="Stirling, B" uniqKey="Stirling B" first="B" last="Stirling">B. Stirling</name></noCountry></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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