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Fine mapping of Pi57 conferring broad spectrum resistance against Magnaporthe oryzae in introgression line IL-E1454 derived from Oryza longistaminata

Authors :
Dong, Liying
Liu, Shuguang
Xu, Peng
Deng, Wei
Li, Xundong
Tharreau, Didier
Li, Jing
Zhou, Jiawu
Wang, Qun
Tao, Dayun
Yang, Qinzhong
Dong, Liying
Liu, Shuguang
Xu, Peng
Deng, Wei
Li, Xundong
Tharreau, Didier
Li, Jing
Zhou, Jiawu
Wang, Qun
Tao, Dayun
Yang, Qinzhong
Source :
PloS One
Publication Year :
2017

Abstract

Wild species of the genus Oryza are excellent gene pools for improvement of agronomic traits of Asian cultivated rice. The blast resistance gene Pi57(t) in the introgression line IL-E1454 derived from Oryza longistaminata was previously mapped on rice chromosome 12. Inoculation with 322 Magnaporthe oryzae isolates collected from 6 countries indicated that Pi57(t) conferred broad spectrum resistance against M. oryzae. Two mapping populations consisting of 29070 and 10375 F2 plants derived from the crosses of resistant donor IL-E1454 with susceptible parents RD23 and Lijiangxintuanheigu respectively, were used for fine mapping of Pi57(t) locus. Based on genotyping and phenotyping results of recombinants screened from the two crosses, Pi57(t) was finally mapped to a 51.7-kb region flanked by two molecular markers (STS57-320 and STS57-372) on the short arm and close to the centromere of chromosome 12. Six candidate resistance genes were predicted in the target region according to the reference sequence of Nipponbare. These results could facilitate both marker-assisted selection for disease-resistant breeding and gene cloning.

Details

Database :
OAIster
Journal :
PloS One
Notes :
Cambodge, République démocratique populaire lao, Myanmar, Thaïlande, Viet Nam, Chine, text, English
Publication Type :
Electronic Resource
Accession number :
edsoai.on1366777581
Document Type :
Electronic Resource