水稻花药ROS稳态调控基因研究进展

    Research Progress of ROS Homeostasis Regulation Genes Involved in Rice Anther Development

    • 摘要: 水稻雄性不育系的发现为杂种优势在水稻中的成功利用奠定了基础,大幅提高了水稻单位面积产量,为解决粮食安全问题提供了强有力的保障。花药作为雄性生殖器官,其发育与花粉育性密切相关,阐明花药发育机制对水稻生产具有重要的理论和实践意义。在抗氧化系统中,活性氧(ROS)的生成与清除处于动态平衡的状态,这一稳态的维持与生物体内的一系列生物学过程密切相关。最新研究表明,ROS稳态失衡通常会导致水稻花药发育异常。为进一步探究ROS稳态在水稻花药发育中的功能及其作用机制,该文归纳总结了与水稻花药发育相关的21个ROS稳态调控基因的研究进展。在这些分离的基因中,包括3个ROS产生基因(OsRboh1OsRboh3OsHXK1)和6个ROS清除基因(OsCATB/2cCu/Zn-SOD1OsALDH2bOsCOX11OsMT-1-4bOsMT2b),其主要编码酶类,可直接调控ROS的含量;3个编码转录因子的基因(OsMADS3bHLH142OsAGO2),其可通过直接调控ROS稳态基因的表达来影响花药发育;9个编码其他蛋白的基因(OsSAPK2OsRACK1BDTC1EDT1OsHSP60-3BOsBP1ADT1OsTMS19DPS1),它们主要通过蛋白间相互作用调控ROS水平及花粉的形成。最后,对水稻花药ROS稳态调控基因的深入研究提出了展望,以期为揭示水稻花药发育的分子机制提供新的思路和参考依据。

       

      Abstract: The discovery of male sterile lines in rice laid a foundation for the successful use of heterosis in rice, greatly improved the yield per unit area of rice, and provided a strong guarantee for solving the problems of food security. As a male reproductive organ, anther development is closely related to pollen fertility. Clarifying the mechanism of anther development is of great theoretical and practical significance for rice production. In the antioxidant system, the production and clearance of reactive oxygen species (ROS) are in a state of dynamic equilibrium. In order to further explore ROS homeostasis in the development of rice anthers, this review summarizes the research progress of 21 ROS homeostasis regulation genes related to rice anther development. Among these isolated genes, three ROS-clearance genes (OsRboh1, OsRboh3 and OsHXK1) and six ROS-clearance genes (OsCATB/2, cCu/Zn-SOD1, OsALDH2b, OsCOX11, OsMT-1-4b and OsMT2b), which mainly encode enzymes, can directly regulate the content of ROS. Three genes (OsMADS3, bHLH142 and OsAGO2), encoding transcription factors, can affect anther development by directly regulating the expression of ROS homeostasis genes. It also includes 9 genes (OsSAPK2, OsRACK1B, DTC1, EDT1, OsHSP60-3B, OsBP1, ADT1, OsTMS19, and DPS1) that encode other proteins, which mainly regulate ROS levels and pollen formation through protein-protein interactions. Finally, the in-depth study of ROS homeostasis genes in rice anthers is prospected, with an aim to provide new ideas and references for revealing the molecular mechanism of rice anther development.

       

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