Author:
Lv Qiming,Xu Xiao,Shang Junjun,Jiang Guanghuai,Pang Zhiqian,Zhou Zhuangzhi,Wang Jing,Liu Ya,Li Ting,Li Xiaobing,Xu Jichen,Cheng Zhukuan,Zhao Xianfeng,Li Shigui,Zhu Lihuang
Abstract
The rice blast resistance gene Pid3 encodes a nucleotide-binding-site leucine-rich repeat (NBS-LRR) protein. This gene was cloned from the rice ‘Digu’ (indica) by performing a genome-wide comparison of the NBS-LRR gene family between two genome-sequenced varieties, ‘9311’ (indica) and ‘Nipponbare’ (japonica). In this study, we performed functional analysis of Pid3-A4, an ortholog of Pid3 revealed by allele mining in the common wild rice A4 (Oryza rufipogon). The predicted protein encoded by Pid3-A4 shares 99.03% sequence identity with Pid3, with only nine amino-acid substitutions. In wild rice plants, Pid3-A4 is constitutively expressed, and its expression is not induced by Magnaporthe oryzae isolate Zhong-10-8-14 infection. Importantly, in transgenic plants, Pid3-A4, as compared with Pid3, displays a distinct resistance spectrum to a set of M. oryzae isolates, including those that prevail in the rice fields of Sichuan Province. Therefore, Pid3-A4 should be quite useful for the breeding of rice blast resistance, especially in southwestern China.
Subject
Plant Science,Agronomy and Crop Science
Cited by
57 articles.
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