期刊
PLANT PHYSIOLOGY AND BIOCHEMISTRY
卷 109, 期 -, 页码 293-299出版社
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.plaphy.2016.10.006
关键词
Hydrogen sulfide; Proline; Foxtail millet; Cadmium stress; Oxidative damage
资金
- National Natural Science Foundation of China [31372085, 31400237, 31501772]
- Natural Science Foundation for Young Scientists of Shanxi Province [2014021026-2]
Hydrogen sulfide (H2S) and some functional amino acids in crops have been involved in the defense system against heavy-metal pollution. Here we report the relationships and functions of H2S and proline to cadmium (Cd) stress. Sodium hydrosulfide (NaHS) pretreatment decreased the electrolytic leakage and the malondialdehyde and hydrogen peroxide contents while enhancing photosynthesis in Cd-treated seedlings. Furthermore, pretreatment with NaHS markedly exacerbated Cd-induced alterations in proline content, the activities of proline-5-carboxylate reductase (P5CR) and proline dehydrogenase (PDH), and the transcript levels of P5CR and PDH. When endogenous H2S was scavenged or inhibited by various H2S modulators, the Cd-induced increase in endogenous proline was weakened. Combined pretreatment with H2S and proline was moderately higher in the Cd-stressed growth status, stomata movements and oxidative damage of seedlings compared to a single treatment with H2S or proline. These results suggest that H2S and proline cooperate to alleviate Cd-damage in foxtail millet. (C) 2016 Elsevier Masson SAS. All rights reserved.
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