Genome-wide association mapping for resistance to bacterial blight and bacterial leaf streak in rice

Autor: Nan, Jiang, Jun, Fu, Qin, Zeng, Yi, Liang, Yanlong, Shi, Zhouwei, Li, Youlun, Xiao, Zhizhou, He, Yuntian, Wu, Yu, Long, Kai, Wang, Yuanzhu, Yang, Xionglun, Liu, Junhua, Peng
Rok vydání: 2020
Předmět:
Zdroj: Planta. 253(5)
ISSN: 1432-2048
Popis: Using genome-wide SNP association mapping, a total of 77 and 7 loci were identified for rice bacterial blight and bacterial leaf streak resistance, respectively, which may facilitate rice resistance improvement. Bacterial blight (BB) and bacterial leaf streak (BLS) caused by Gram-negative bacteria Xanthomonas oryzae pv. oryzae (Xoo) and X. oryzae pv. oryzicola (Xoc), respectively, are two economically important diseases negatively affecting rice production. To mine new sources of resistance, a set of rice germplasm collection consisting of 895 re-sequenced accessions from the 3000 Rice Genomes Project (3 K RGP) were screened for BB and BLS resistance under field conditions. Higher levels of BB resistance were observed in aus/boro subgroup, whereas the japonica, temperate japonica and tropical japonica subgroups possessed comparatively high levels of resistance to BLS. A genome-wide association study (GWAS) mined 77 genomic loci significantly associated with BB and 7 with BLS resistance. The phenotypic variance (R
Databáze: OpenAIRE
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