| 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。 |
| 关键词: 一氧化氮 非生物胁迫 活性氧 过氧化氢 信号转导 |
| DOI：10.11841/j.issn.1007-4333.2009.03.048 |
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| Nitric oxide synthesis in plant and responses to abiotic stress |
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| Abstract: |
| 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... |
| Key words: nitric oxide abiotic stress reactive oxygen species H 2O 2 signal transduction |
