当前位置: X-MOL 学术J. Integr. Plant Biol. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
A bHLH transcription activator regulates defense signaling by nucleo-cytosolic trafficking in rice.
Journal of Integrative Plant Biology ( IF 11.4 ) Pub Date : 2020-03-04 , DOI: 10.1111/jipb.12922
Fanwei Meng 1, 2 , Chao Yang 1, 2 , Jidong Cao 1 , Huan Chen 3 , Jinhuan Pang 1 , Qiqi Zhao 1, 4 , Zongyi Wang 5 , Zheng Qing Fu 3 , Jun Liu 1, 2
Affiliation  

Crosstalk between plant hormone signaling pathways is vital for controlling the immune response during pathogen invasion. Salicylic acid (SA) and jasmonic acid (JA) often play important but antagonistic roles in the immune responses of higher plants. Here, we identify a basic helix‐loop‐helix transcription activator, OsbHLH6, which confers disease resistance in rice by regulating SA and JA signaling via nucleo‐cytosolic trafficking in rice (Oryza sativa). OsbHLH6 expression was upregulated during Magnaporthe oryzae infection. Transgenic rice plants overexpressing OsbHLH6 display increased JA responsive gene expression and enhanced disease susceptibility to the pathogen. Nucleus‐localized OsbHLH6 activates JA signaling and suppresses SA signaling; however, the SA regulator OsNPR1 (Nonexpressor of PR genes 1) sequesters OsbHLH6 in the cytosol to alleviate its effect. Our data suggest that OsbHLH6 controls disease resistance by dynamically regulating SA and JA signaling.

中文翻译:

bHLH转录激活因子通过水稻中的核质转运来调节防御信号。

植物激素信号传导途径之间的串扰对于控制病原体入侵期间的免疫反应至关重要。水杨酸(SA)和茉莉酸(JA)在高等植物的免疫反应中经常发挥重要但拮抗的作用。在这里,我们确定一个基本的螺旋-环-螺旋转录激活,OsbHLH6,其通过调节SA和JA水稻信令经由细胞核-细胞质贩卖(赋予在水稻抗病水稻)。在稻瘟病菌感染期间,OsbHLH6表达上调。过表达OsbHLH6的转基因水稻显示出JA响应基因表达增加和疾病对病原体的敏感性增加。核定位的OsbHLH6激活JA信号并抑制SA信号;但是,SA调节剂OsNPR1(PR基因的非表达抑制剂)将OsbHLH6隔离在细胞质中以减轻其作用。我们的数据表明,OsbHLH6通过动态调节SA和JA信号传导来控制疾病抗性。
更新日期:2020-03-04
down
wechat
bug