水稻BZR家族转录因子的结构与功能

Structure and functions of BZR family transcription factors in rice: a review

  • 摘要: 油菜素唑抗性(BRASSINAZOLE-RESISTANT,BZR)转录因子家族是植物特有的转录因子家族之一,是油菜素甾醇(Brassinosteroid,BR)信号传导途径中的关键成员,在植物生长发育、植物激素信号传导和逆境胁迫响应等过程中发挥重要的调控作用。目前已报道的水稻BZR家族有5个成员,在调控水稻叶夹角、株高、种子发育以及逆境胁迫响应方面具有多种生物学功能。水稻BZR家族成员除了参与BR调控,还参与了生长素、赤霉素以及茉莉酸等植物激素的调节。本文系统综述了水稻BZRs的蛋白结构特征、对植物激素的调节以及在水稻生长发育和逆境中的生物学功能,旨在为利用BZR家族基因作为分子育种的靶标加速实现优质高产水稻新品种培育提供新的见解与帮助。

     

    Abstract: The BRASSINAZOLE-RESISTANT (BZR) family is one of the plant-specific transcription factor families and a key component of the brassinosteroid (BR) signaling pathway. It plays crucial regulatory roles in plant growth and development, phytohormone signal transduction, and stress responses. To date, five members of the BZR family have been identified in rice, which exhibit diverse biological functions in regulating leaf angle, plant height, seed development, and stress tolerance. In addition to mediating BR signaling, rice BZR family members are also involved in the regulation of other phytohormones including auxin, gibberellin, and jasmonic acid. This review systematically summarizes the protein structural characteristics of rice BZRs, their regulatory roles in phytohormone networks, as well as their biological functions in rice growth, development and stress adaptation. It provides novel insights and theoretical support for accelerating the breeding of new high-quality and high-yield rice varieties by using BZR family genes as molecular breeding targets.

     

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