摘要
一氧化氮是具有生物活性和信号转导作用的易扩散小分子气体,果蔬细胞通过一氧化氮合酶(NOS)、硝酸还原酶或非生化反应途径产生NO。内源NO可通过抑制乙烯的生物合成和调控环化核苷酸在植物组织中的水平来延缓植物组织的成熟和衰老,延长果蔬贮藏货架期;NO还可诱导采后果蔬产生抗病防卫反应,提高果蔬的抗病胁迫能力。着重概述NO在果蔬采后延缓成熟衰老、诱导抗病等方面的作用及其机理研究进展。
Nitric oxide （NO） is an easily diffusible and bioactive gas, and it plays a role in signal transduction. It has been widely accepted that NO is endogenously produced in fruit and vegetable cells, possibly via NO synthase, nitrate reductases or non-biochemical reactions. Endogenous NO may delay the ripening and senescence of fruits and vegetables by inhibiting ethylene biosynthesis and controlling the level of endogenous cyclic nucleotide, thus extending their storage life. It also can induce the disease resistance reaction, mechanism of nitric improve stress resistance ability of fruits and vegetables. This paper reviews the oxide action involved in senescence delay, disease resistance induction in harvested fruits and vegetables.
出处
《热带作物学报》
CSCD
2010年第7期1212-1217,共6页
Chinese Journal of Tropical Crops
基金
国家自然科学基金-广东省联合基金项目(U0631004)
国家科技支撑计划(2006BAD22B04
2006BAD30B06)
广东省自然科学基金团队项目(06200670)
农业部科技项目(nycytx-33
nyhyzx07-029
nyhyzx07-030)资助
关键词
一氧化氮
延缓衰老
抗病性
Nitric oxide
Senescence delay
Disease resistance
作者简介
郭芹，女，1985年生，硕士，研究方向：果蔬保鲜。E-mail：379381945@qq．com。
通讯作者．李雪萍。E-mail：lxp88@scau．edu．cn。
