植物WRKY转录因子在应对盐胁迫中的作用研究进展

The role of plant WRKY transcription factors against salt stress: a review

摘要:

土壤中的高含盐量严重限制了植物的生长和作物的产量。植物的许多转录因子在植物逆境胁迫中发挥着重要的作用，但仍有很多转录因子的分子机制目前尚不清楚。WRKY转录因子作为高等植物中最大的转录因子家族之一，参与并影响着植物生长发育的多个方面，在盐胁迫的多种不同响应途径中发挥重要作用。WRKY蛋白对基因表达的调控主要是通过与DNA特定顺式调控元件——W-box元件（TTGACC）的结合来实现的。近年来，从模式植物拟南芥（Arabidopsis）到农作物，已经有许多研究揭示了WRKY家族成员的作用和机制。本文综述了WRKY转录因子在应对盐胁迫方面的最新研究进展，探讨了WRKY转录因子研究目前存在的问题和未来的展望。

关键词:植物;WRKY转录因子;盐胁迫;调控

Abstract:

High salt content in soils severely hampers plant growth and crop yields. Many transcription factors in plants play important roles in responding to various stresses, but their molecular mechanisms remain unclear. WRKY transcription factors are one of the largest families of transcription factors in higher plants that are involved in and influence many aspects of plant growth and development. They play important roles in responding to salt stress. The regulation of gene expression by WRKY proteins is mainly achieved by binding to the DNA's specific cis-regulatory elements, the W-box elements (TTGACC). In recent years, there have been many studies revealing the roles and mechanisms of WRKY family members, from model plant Arabidopsis to agricultural crops. This paper reviews the latest research progress on WRKY transcription factors in response to salt stress and discusses the current challenges and future perspectives of WRKY transcription factor research.

Key words:plant;WRKY transcription factor;salt stress;regulation