Mitochondrial energy-dissipation pathway and cellular redox disruption compromises Arabidopsis resistance to turnip crinkle virus infection

被引：4

作者：

Pu, Xiao-jun

Li, Ya-nan

Wei, Li-jie

Xi, De-hui

Lin, Hong-hui ^{[1
]}

机构：

[1] Sichuan Univ, Coll Life Sci, Minist Educ, Key Lab Bioresource & Ecoenvironm, Chengdu 610064, Peoples R China

来源：

BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS | 2016年 / 473卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Alternative oxidase; Cyanide-resistant respiration; Proton gradient regulation 5; Redox homeostasis; Turnip crinkle virus; Uncoupling protein; PHOTOSYNTHETIC ELECTRON-TRANSPORT; ALTERNATIVE OXIDASE; CHLOROPHYLL FLUORESCENCE; UNCOUPLING PROTEIN; PRIMARY METABOLISM; SALICYLIC-ACID; BIOTIC STRESS; PLANTS; DEFENSE; HOMEOSTASIS;

D O I：

10.1016/j.bbrc.2016.03.023

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Members of the plant mitochondrial energy-dissipation pathway (MEDP) coordinate cellular energy metabolism, redox homeostasis and the balance of ROS production. However, the roles of MEDP members, particularly uncoupling protein (UCP), in resistance to turnip crinkle virus infection (TCV) are poorly understood. Here, we showed that disrupting some MEDP genes compromises plant resistance to TCV viral infection and this is partly associated with damaged photosynthetic characteristics, altered cellular redox and increased ROS production. Experiments using mutant plants with impaired cellular compartment redox poising further demonstrated that impaired chloroplast/mitochondria and cystosol redox increases the susceptibility of plants to viral infection. Our results illustrate a mechanism by which MEDP and cellular compartment redox act in concert to regulate plant resistance to viral infections. (C) 2016 Elsevier Inc. All rights reserved.

引用

页码：421 / 427

页数：7