水稻响应缺磷信号的分子调控机制

Molecular Regulation Mechanism of Response to Phosphate Deficiency in Rice

水稻是世界主要粮食作物之一,然而许多土壤环境中的缺磷现象成为限制水稻产量的主要原因。因此,了解水稻响应缺磷信号的分子机制对提高水稻产量和磷素利用效率都具有重大意义。水稻响应缺磷信号的分子机制由复杂的基因调控网络调节,有大量的转录因子、microRNA和磷酸盐转运蛋白等参与其中。本综述结合双子叶模式植物拟南芥中的磷素信号传导途径,总结了水稻磷素信号调控网络中磷酸盐转运蛋白与转录因子的功能,并阐明水稻响应缺磷信号分子调控机制的最新研究进展。除此之外,本综述还解析了未来对磷酸盐转运蛋白功能与作用机制的研究方向,并进一步对已知磷素平衡关键转录因子和转运蛋白在磷素高效利用水稻新品种创制上的应用前景与探索方向提出展望。本综述揭示了当前研究水稻响应缺磷信号的调控网络中未知的问题,为将来开展水稻缺磷响应机制研究,以及培育高效利用磷素新品种提供科学数据。

Rice is one of the major crops in the world,but the lack of phosphorus in many soil environments is the main reason to limit rice yield.understanding the molecular mechanisms of responding to phosphate deficiency plays a crucial role in improving the yields and the efficiency of phosphate utilization in rice.Molecular mechanism of rice response to phosphate deficiency is regulated by complex gene regulatory networks,and many transcription factors,microRNA and phosphate transporters are involved in it.This review summarizes the functions of phosphate transporters and transcription factors in the phosphate signaling network,and elucidates the latest research progress in the molecular regulation mechanism of response to phosphate deficiency in rice.In addition,this review also analyzes the future research directions of phosphate transporters,and further prospects for the application foreground and exploration directions of the known key transcription factors and transporters related to phosphate homeostasis in cultivating new varieties of rice with high phosphate use efficiency.This review reveals the unknown problems in the current regulatory network of rice response to phosphate deficiency,and provides a scientific data for the future research on the mechanism of rice phosphate deficiency response and the cultivation of new varieties with high phosphate use efficiency.