查看文章

Nitric oxide (NO) is a gaseous molecule, actively participating in regulation of various metabolic and physiological processes in plants under environmental stress conditions. Interestingly, the discovery and categorization of NO biosynthesis gene, nitric oxide synthase, is still controversial in plants. However, in recent few years, using a transgenic approach or exogenous NO donor, many research works have been done to illustrate the several NO‐mediated heavy metal detoxification pathways in plants. Modulation of NO‐responsive genes related to osmolyte production, hormone metabolism, redox regulation, and secondary metabolism highlighted their crucial role in heavy metal tolerance. In this chapter, we talk about recent advances related to NO and heavy metal detoxification mechanisms, signaling pathways, cross talks of NO with plant hormones, and their regulation.