拟南芥MAX2蛋白功能研究进展

Research Progress on the Function of MAX2 Protein in Arabidopsis

摘要:

独角金内酯(strigolactone, SLs)是一类新型植物激素，在植物生长发育的进程中发挥多种重要功能，包括调控植物的分枝，促进种子的萌发，以及影响根系建成等。MAX2 (more axillary growth 2)是SL信号传导途径的关键调控因子，位于合成途径基因MAX1、MAX3和MAX4的下游，几乎影响独脚金内酯所控制的所有表型。近年来，MAX2多样化的功能逐步得到揭示，大量数据表明MAX2不仅仅是SL信号的重要组分，同时也参与SL和多种激素信号间的交叉互作，在植物生长发育的各个环节，以及抵御生物和非生物胁迫的反应中都发挥至关重要的作用，但具体调控机制还有待更加深入的研究。对目前已知的MAX2功能进行了总结和阐述，以期为全面揭示MAX2功能及其调控多种激素信号的交叉机制提供理论参考。

Abstract:

Strigolactone (SLs) as a new group of plant hormones, plays a variety of crucial functions in plant growth and development, including regulating plant branching, promoting seed germination, and affecting root system formation. MAX2 (more axillary growth 2) is a key regulator of SL signal transduction pathway. It is located downstream of the synthesis pathway genes MAX1, MAX3 and MAX4, and affects almost all phenotypes controlled by SL_S. In recent years, the diversified functions of MAX2 have been gradually revealed. A large number of data show that MAX2 is not only an important component of SL signal, but also involved in the cross interaction between SL and a variety of hormone signals, which plays a vital role in all aspects of plant growth and development, as well as in the response to biotic and abiotic stresses. However, the specific regulation mechanism still needs to be further studied. The current known functions of MAX2 were summarized and elaborated, in order to provide theoretical reference for fully revealing the function of MAX2 and the cross- mechanism of regulating various hormone signals.