期刊
THEORETICAL AND EXPERIMENTAL PLANT PHYSIOLOGY
卷 27, 期 3-4, 页码 227-235出版社
BRAZILIAN SOC PLANT PHYSIOLOGY
DOI: 10.1007/s40626-015-0047-1
关键词
Pseudomonas aeruginosa; Bacillus megaterium; Oryza sativa; Sodium chloride; Cell death
Salt stress causes oxidative damage and cell death in plants. In this study, root associated bacteria Pseudomonas aeruginosa and Bacillus megaterium were inoculated in two rice cultivars, named Dhandi (salt-tolerant) and GR 11 (salt-sensitive), to mitigate detrimental effects of salt stress. We aimed to investigate the protective effects of Pseudomonas aeruginosa and Bacillus megaterium on paddy exposed to salt stress (150 mMNaCl) under controlled environmental growth condition. Salt stress in plants increased reactive oxygen species (ROS) accumulation, lipid peroxidation, DNA fragmentation and apoptosis-like cell death. Both bacterial strains effectively decreased ROS accumulation, lipid peroxidation, suppressed DNA fragmentation and apoptosis-like cell death in the presence of severe salt stress. We found that P. aeruginosa and B. megaterium significantly suppressed the increment of membrane permeability induced by salinity. It was concluded that both P. aeruginosa and B. megaterium provide protection against NaCl-induced cell death by decreasing levels of ROS accumulation and lipid peroxidation as well as improvement of membrane integrity.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据