Regulation Mechanism of Nitric Oxide to Plant Growth and Development
ZHANG Xu cheng 1,2 ,SHANGGUAN Zhou ping 2,GAO Shi ming 1 (1 Institute of Dryland Agriculture, Gansu Academy of Agriculture Sciences, Lanzhou 730070,China;2 State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences, Yangling,Shaanxi 712100,China)
Nitric oxide is an easily diffused bioactive and signal transmitting molecule that does not only directly exert physiological regulations on many life activities of plants such as germination, leaf expansion, root growth, stress physiology, and sequential cell death but also participates in the adapting of plants to environmental stresses working as the key signal carrier in defense response. Recent researches have shown that nitric oxide presents synergistic effects with phyto hormones in physiological regulation and signal transmission, and it is one of nitric oxide regulation mechanisms for plants to resorts to phyto-hormones to play its physiological functions. The paper expatiates the effects of nitric oxide on plant growth and development in virtue of nitric oxide production, regulation mechanism and signal transmitting functions.