Roles of nitric oxide in alleviating heavy metal toxicity in plants.
Roles of nitric oxide in alleviating heavy metal toxicity in plants.
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DOI：
10.1016/j.abb.2010.02.014
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发表时间：
2010-05
影响因子：
3.9
通讯作者：
J. Xiong;G. Fu;L. Tao;Cheng Zhu
中科院分区：
文献类型：
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作者：
J. Xiong;G. Fu;L. Tao;Cheng Zhu
一氧化氮 (NO) 参与调节植物对各种非生物和生物胁迫的多种反应。近年来，越来越多的文章报道了外源NO对减轻植物重金属毒性的作用。然而，与目前对NO与其他非生物胁迫关系的认识相比，对NO减轻重金属毒性的分子和生理机制的了解还相当有限，并且一些结果相互矛盾。因此，为了帮助阐明NO在重金属耐受性中的作用，回顾和讨论该研究课题的最新进展是有价值的。本文总结和讨论了重金属对内源NO含量影响以及外源NO减轻植物重金属毒性的机制和信号通路的最新进展。还提出了 NO 在减轻重金属毒性方面的作用的基本方案。
Nitric oxide (NO) is involved in the regulation of multiple plant responses to a variety of abiotic and biotic stresses. Recently, an increasing number of articles have reported the effects of exogenous NO on alleviating heavy metal toxicity in plants. However, compared with the current understanding of the relationships between NO and other abiotic stresses, knowledge of the molecular and physiological mechanisms of NO in alleviating heavy metal toxicity is quite limited, and some results contradict one another. Therefore, to help clarify the roles of NO in heavy metal tolerance, it is valuable to review and discuss the recent advances on this research topic. In this mini-review, the latest advances in understanding the effects of heavy metals on endogenous NO content and the mechanisms and signaling pathways of exogenous NO in alleviating heavy metal toxicity in plants are summarized and discussed. A basic scheme for the roles of NO in alleviating heavy metal toxicity is also proposed.