【摘要】 非生物胁迫,尤其是盐分、干旱和寒冷是导致全球作物减产的主要原因。植物对环境胁迫的适应,依赖于与胁迫感知、信号转导、基因表达相关的分子级联网络的激活。因此,保护和维持细胞成分的结构和功能的基因工程可以增强植物对胁迫的耐受性。综述拟南芥对盐分、干旱和寒冷3种主要非生物胁迫因子耐受性的分子机理,以及相关机理和耐逆基因在改良作物耐逆性方面的应用。更多还原

【Abstract】 Abiotic stresses,especially salinity,drought and cold,are the primary causes of crop loss worldwide.Plant adaptation to environmental stresses is dependent upon the activation of cascades of molecular networks involved in stress perception,signal transduction,and the expression of specific stress related genes and metabolites.Consequently,engineering genes that protect and maintain the function and structure of cellular components can enhance tolerance to stress.In this review,we reflect on the critical role Arabidopsis is playing in unraveling abiotic stress signal transduction(focusing primarily on salt,cold,and drought stress),and how these new insights on the mechanisms of tolerance to these stresses are suggesting novel approaches to engineer the next generation of biotech crops.更多还原