植物盐胁迫应答转录因子的研究进展

Advances of salt stress-responsive transcription factors in plants

摘要:

盐胁迫会导致植物受到初级的渗透胁迫和离子毒害以及次级的氧化胁迫和营养胁迫，严重制约了农业生产。植物盐胁迫应答转录因子能够通过调节下游靶基因的表达减轻盐胁迫对植物造成的伤害。文中基于土壤盐渍化及其对植物的危害、转录因子在植物盐胁迫信号转导网络中的中枢调节作用，综述了盐胁迫应答转录因子参与的盐胁迫信号转导途径、通过形成同源或异源二聚体及与调控蛋白形成复合物等方式调控下游基因形成的复杂下游基因网络，以及盐胁迫应答转录因子在提高植物耐盐性中的应用，为解析盐胁迫应答转录因子在盐胁迫应答调控网络中的作用提供理论依据，为植物抗逆分子育种提供参考信息。

Abstract:

Salt stress may cause primary osmotic stress and ion toxicity, as well as secondary oxidative stress and nutritional stress in plants, which hampers the agricultural production. Salt stress-responsive transcription factors can mitigate the damage of salt stress to plants through regulating the expression of downstream target genes. Based on the soil salinization and its damage to plants, and the central regulatory role of transcription factors in the plant salt stress-responsive signal transduction network, this review summarized the salt stress-responsive signal transduction pathways that the transcription factors are involved, and the application of salt stress-responsive transcription factors to enhance the salt tolerance of plants. We also reviewed the transcription factors-regulated complex downstream gene network which is formed by forming homo- or heterodimers between transcription factors and by forming complexes with regulatory proteins. This paper provides a theoretical basis for understanding the role of salt stress-responsive transcription factors in the salt stress regulatory network, which may facilitate the molecular breeding for improved stress resistance.