Dynamics of Xanthomonas oryzae pv. oryzae populations in Korea and their relationship to known bacterial blight resistance genes

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cg.identifier.doihttps://doi.org/10.1094/phyto-96-0867
cg.issn0031-949X
cg.issue8
cg.journalPhytopathology
cg.volume96
dc.contributor.authorJeung, J.U.
dc.contributor.authorHeu, S.G.
dc.contributor.authorShin, M.S.
dc.contributor.authorVera Cruz, C.M.
dc.contributor.authorJena, K.K.
dc.date.accessioned2024-12-19T12:56:27Zen
dc.date.available2024-12-19T12:56:27Zen
dc.identifier.urihttps://hdl.handle.net/10568/166582
dc.titleDynamics of Xanthomonas oryzae pv. oryzae populations in Korea and their relationship to known bacterial blight resistance genesen
dcterms.abstractDeveloping resistant cultivars requires an understanding of the dynamics of the pathogen populations as well as the genetics of host resistance. Bacterial leaf blight (BB), caused by the vascular pathogen Xanthomonas oryzae pv. oryzae, has become one of the most devastating diseases of rice. We demonstrate here the quantitative analyses of responses of near-isogenic lines carrying various BB resistance (R) genes and R-gene combinations against 16 X. oryzae pv. oryzae isolates representing Korean BB pathotypes. The estimated main effects of each R gene against the 16 isolates identified prominent differences in BB pathotypes between Korea and other countries. Three major aspects of our quantitative observations and statistical analysis are (i) strong and broad resistance of xa5; (ii) independent and additive genetic actions of Xa4, xa5, and Xa21 under digenic or trigenic status; and (iii) a strong quantitative complementation effect contributed by the functional alleles of Xa4 and Xa21. We conclude that the pyramid line containing genes Xa4, xa5, and Xa21 would be the most promising and valuable genotype for improving Korean japonica cultivars for BB resistance.en
dcterms.bibliographicCitationJeung, J. U.; Heu, S. G.; Shin, M. S.; Vera Cruz, C. M. and Jena, K. K. 2006. Dynamics of Xanthomonas oryzae pv. oryzae populations in Korea and their relationship to known bacterial blight resistance genes. Phytopathology®, Volume 96 no. 8 p. 867-875en
dcterms.extentpp. 867-875
dcterms.issued2006-08
dcterms.languageen
dcterms.publisherScientific Societies
dcterms.subjectallelesen
dcterms.subjectdisease resistanceen
dcterms.subjectgenesen
dcterms.subjectplant disease controlen
dcterms.subjectplant pathogenic bacteriaen
dcterms.subjectbacterial blighten
dcterms.subjectxanthomonas oryza pven
dcterms.subjectoryzaeen
dcterms.subjectkorea republicen
dcterms.typeJournal Article

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