Jasmonic acid-mediated defense suppresses brassinosteroid-mediated susceptibility to Rice black streaked dwarf virus infection in rice

文献类型： 外文期刊

第一作者： He, Yuqing

作者： He, Yuqing;He, Yuqing;Zhang, Hehong;Sun, Zongtao;Li, Junmin;Hong, Gaojie;Yan, Fei;Chen, Jianping;Zhang, Hehong;Zhu, Qisong;Zhou, Xuebiao;MacFarlane, Stuart

作者机构：

关键词： brassinosteroid pathway; jasmonic acid pathway; Oryza sativa (rice); plant defense response; Rice Black Streaked Dwarf Virus (RBSDV)

期刊名称：NEW PHYTOLOGIST （ 影响因子：10.151； 五年影响因子：10.475 ）

ISSN： 0028-646X

年卷期： 2017 年 214 卷 1 期

页码：

收录情况： SCI

摘要： Plant hormones play a vital role in plant immune responses. However, in contrast to the relative wealth of information on hormone-mediated immunity in dicot plants, little information is available on monocot-virus defense systems. We used a high-throughput-sequencing approach to compare the global gene expression of Rice black-streaked dwarf virus (RBSDV)-infected rice plants with that of healthy plants. Exogenous hormone applications and transgenic rice were used to test RBSDV infectivity and pathogenicity. Our results revealed that the jasmonic acid (JA) pathway was induced while the brassinosteroid (BR) pathway was suppressed in infected plants. Foliar application of methyl jasmonate (MeJA) or brassinazole (BRZ) resulted in a significant reduction in RBSDV incidence, while epibrassinolide (BL) treatment increased RBSDV infection. Infection studies using coi1-13 and Go mutants demonstrated JA-mediated resistance and BR-mediated susceptibility to RBSDV infection. A mixture of MeJA and BL treatment resulted in a significant reduction in RBSDV infection compared with a single BL treatment. MeJA application efficiently suppressed the expression of BR pathway genes, and this inhibition depended on the JA coreceptor OsCOI1. Collectively, our results reveal that JA-mediated defense can suppress the BR-mediated susceptibility to RBSDV infection.

分类号： Q94

  • 相关文献
作者其他论文 更多>>

微信小程序