摘要
一氧化氮在植物的生长发育和对胁迫的反应过程中参与了多种生理活动。植物通过NO合成酶、硝酸还原酶、非酶促途径3种途径合成NO;大多数非生物胁迫都能诱导NO的产生。植物细胞中的NO具有双重作用:低浓度的NO能够促进植物的生长与发育,提高植物的抗逆性;而高浓度的NO则对植物细胞有毒害作用。在对非生物胁迫的反应中,NO能够减轻活性氧对植物细胞的伤害,并和其他的信号分子结合,共同调节胁迫响应基因的表达。
Nitric oxide （NO） plays an important role in diverse physiological processes in plants. Most abiotic stresses can induce its production in plant cell. Nitric oxide can promote the development and stress tolerance of plants at low concentrations, but is harmful at high concentrations. This review is focused on NO synthesis and its functions in plant responses to abiotic environmental stresses. Nitric oxide alleviates the harmfulness of reactive oxygen species, reacts with other signaling molecules and regulates the expression of stress responsive genes under various stress conditions.
出处
《中国农业大学学报》
CAS
CSCD
北大核心
2009年第3期1-6,共6页
Journal of China Agricultural University
关键词
一氧化氮
非生物胁迫
活性氧
过氧化氢
信号转导
nitric oxide
abiotic stress
reactive oxygen species
H2O2
signal transduction
