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dc.contributor.authorBernardes-de-Assis, Joana-
dc.contributor.authorStorari, Michelangelo-
dc.contributor.authorZala, Marcello-
dc.contributor.authorWang, Wenxiang-
dc.contributor.authorJiang, Daohong-
dc.contributor.authorLi ShiDong,-
dc.contributor.authorJin, Meisong-
dc.contributor.authorMcDonald, Bruce A.-
dc.contributor.authorCeresini, Paulo C.-
dc.identifier.citationPhytopathology. St Paul: Amer Phytopathological Soc, v. 99, n. 9, p. 1090-1099, 2009.-
dc.description.abstractSheath blight disease (SBD) on rice, caused by Rhizoctonia solani AG-1 IA, is one of the most devastating rice diseases on a global basis, including China (in Eastern Asia), the world's largest rice-growing country. We analyzed the population genetics of nine rice-infecting populations from China using nine microsatellite loci. One allopatric population from India (Southern Asia) was included in the analyses. In total, 300 different multilocus genotypes were found among 572 fungal isolates. Clonal fractions within rice fields were 16 to 95%, suggesting that sclerotia were a major source of primary inoculum in some fields. Global Phi(ST) statistics (Phi(ST) = 42.49; P <= 0.001) were consistent with a relatively high level of differentiation among populations overall; however, pairwise comparisons gave nonsignificant R(ST) values, consistent with contemporary gene flow among five of the populations. Four of these populations were located along the Yangtze River tributary network. Gene flow followed an isolation-by-distance model consistent with restricted long-distance migration. Historical migration rates were reconstructed and yielded values that explained the current levels of population subdivision. Except for one population which appeared to be strictly clonal, all populations showed evidence of a mixed reproductive mode, including both asexual and sexual reproduction. One population had a strictly recombining structure (all loci were in Hardy-Weinberg equilibrium) but the remaining populations from China and the one from India exhibited varying degrees of sexual reproduction. Six populations showed significant F(IS) values consistent with inbreeding.en
dc.description.sponsorshipMicrosoft Corporation-
dc.publisherAmer Phytopathological Soc-
dc.sourceWeb of Science-
dc.titleGenetic Structure of Populations of the Rice-Infecting Pathogen Rhizoctonia solani AG-1 IA from Chinaen
dc.contributor.institutionAnhui Acad Agr Sci-
dc.contributor.institutionHuazhong Agr Univ-
dc.contributor.institutionChinese Acad Agr Sci-
dc.contributor.institutionAgr Acad Zhejiang-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.description.affiliationETH, Inst Integrat Biol, CH-8092 Zurich, Switzerland-
dc.description.affiliationAnhui Acad Agr Sci, Inst Plant Protect, Hefei 230031, Anhui, Peoples R China-
dc.description.affiliationHuazhong Agr Univ, Coll Plant Sci & Technol, Wuhan 430070, Hubei, Peoples R China-
dc.description.affiliationChinese Acad Agr Sci, Inst Plant Protect, State key Lab Biol Plant Dis & Insect Pests, Soilborne Dis Lab, Beijing 100081, Peoples R China-
dc.description.affiliationAgr Acad Zhejiang, Inst Plant Protect, Hangzhou, Zhejiang, Peoples R China-
dc.description.affiliationUniv Estadual Paulista, Depto Fitossanidade Engn Rural & Solos, BR-15385000 São Paulo, Brazil-
dc.description.affiliationUnespUniv Estadual Paulista, Depto Fitossanidade Engn Rural & Solos, BR-15385000 São Paulo, Brazil-
dc.description.sponsorshipIdETH: TH-16/06-1-
dc.rights.accessRightsAcesso aberto-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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