独角金内酯调控水稻分蘖芽休眠的研究进展

化学控制无效分蘖是水稻高产栽培的研究热点和努力方向,分蘖芽休眠与萌发转换决定了分蘖是否发生,而该过程受激素和相关基因表达的调控。前人研究已明确生长素和细胞分裂素参与了分蘖芽休眠与萌发转换的调控,独角金内酯是最近才被发现的一种激素或前体,已被证明参与了水稻分蘖的调控,但其调控机理和信号转导途径尚不明确。本文在独角金内酯对水稻分蘖的调控作用、其合成及信号转导过程以及其调控水稻分蘖发生的作用机制等方面展开了综述。

Advances in Strigolactones Regulating the Dormancy of Rice Tiller Bud

Chemical control of the ineffective tillering in high-yield rice cultivation has been the hotspot and the future research direction. However, the appropriate chemical regulator has not been found yet. Strigolactones are newly discovered hormone precursors and have been shown in the regulation of rice tillering, while the regulation mechanism and signal transduction pathways of strigolactones are still unclear. In this study, the author summarized the regulation of strigolactones on rice tillering, the synthesis and signal transduction pathway of strigolactones, and the mechanism of strigolactones in controlling rice tillering. It is considered that strigolactones are able to inhibit the tillering of rice, and it might play a role in two pathways, by preventing auxin export in tiller buds or inhibiting buds outgrowth through directly entering tiller buds. The author also discussed current problems in the research, and proposed the application prospect of strigolactones regulating the tillering in field production of rice.