Rice miR1432 Fine-Tunes the Balance of Yield and Blast Disease Resistance via Different Modules

• 全文链接

水稻miR1432通过不同模块微调产量和稻瘟病抗性的平衡

关键词：

来源：

RICE

全文链接：

//agri.nais.net.cn/topic/downloadFile/605b542f-9a78-41d7-ad8b-1d61e8c4d82f

来源地址：

//agri.nais.net.cn/topic/downloadFile/605b542f-9a78-41d7-ad8b-1d61e8c4d82f

资源所属：

杂交水稻专题

类型：

学术文献

语种：

英语

原文发布日期：

2021-10-21

摘要：

microRNAs act as fine-tuners in the regulation of plant growth and resistance against biotic and abiotic stress. Here we demonstrate that rice miR1432 fine-tunes yield and blast disease resistance via different modules. Overexpression of miR1432 leads to compromised resistance and decreased yield, whereas blocking miR1432 using a target mimic of miR1432 results in enhanced resistance and yield. miR1432 suppresses the expression of LOC_Os03g59790, which encodes an EF-hand family protein 1 (OsEFH1). Overexpression of OsEFH1 leads to enhanced rice resistance but decreased grain yield. Further study revealed that miR1432 and OsEFH1 are differentially responsive to chitin, a fungus-derived pathogen/microbe-associated molecular pattern (PAMP/MAMP). Consistently, blocking miR1432 or overexpression of OsEFH1 improves chitin-triggered immunity responses. In contrast, overexpression of ACOT, another target gene regulating rice yield traits, has no significant effects on rice blast disease resistance. Altogether, these results indicate that miR1432 balances yield and resistance via different target genes, and blocking miR1432 can simultaneously improve yield and resistance.