生物
基因
麦格纳波特
格里斯麦格纳波特
水杨酸
植物抗病性
转录组
过氧化物酶
遗传学
基因表达
细胞生物学
酶
生物化学
水稻
作者
Ziwei Zhu,Junjie Yin,Mawsheng Chern,Xiaobo Zhu,Chao Yang,Kaiwei He,Yuchen Liu,Min He,Jing Wang,Jintao Wang,Long Wang,Yingjie Wei,Jichun Wang,Jiali Liu,Hai Qing,Yu Bi,Mingwu Li,Kun Hu,Tuo Qi,Qingqing Hou,Xuewei Chen,Weitao Li
摘要
Abstract bsr‐d1 , an allele encoding a transcription factor identified from the rice cultivar Digu, confers durable, broad‐spectrum resistance to infections by strains of Magnaporthe oryzae . bsr‐d1 was predicted to inhibit M. oryzae ‐induced expression of Bsr‐d1 RNA and degradation of hydrogen peroxide to achieve resistance to M. oryzae . However, the global effect of biological process and molecular function on blast resistance mediated by Bsr‐d1 remains unknown. In this study, we compared transcriptomic profiling between Bsr‐d1 knockout (Bsr‐d1KO) lines and the wild type, TP309. Our study revealed that bsr‐d1 mainly regulates the redox state of plant cells, but also affects amino acid and unsaturated fatty acid metabolism. We further found that BSR‐D1 indirectly regulates salicylic acid biosynthesis, metabolism, and signal transduction downstream of the activation of H 2 O 2 signalling in the bsr‐d1 ‐mediated immune response. Furthermore, we identified a novel peroxidase‐encoding gene, Perox3 , as a new BSR‐D1 target gene that reduces resistance to M. oryzae when overexpressed in TP309. These results provide new insights into the bsr‐d1 ‐mediated blast resistance.
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