FRIZZLE PANICLE (FZP) regulates rice spikelets development through modulating cytokinin metabolism

文献类型： 外文期刊

第一作者： Wang, Wei

作者： Wang, Wei;Wang, Junmin;Chen, Wenqiang

作者机构：

关键词： Rice; Grain number; FZP; DST-OsCKX2 module; Cytokinin

期刊名称：BMC PLANT BIOLOGY （ 影响因子：5.3； 五年影响因子：5.9 ）

ISSN： 1471-2229

年卷期： 2023 年 23 卷 1 期

页码：

收录情况： SCI

摘要： Background The number of grains per panicle is an important factor in determining rice yield. The DST-OsCKX2 module has been demonstrated to regulate panicle development in rice by controlling cytokinin content. However, to date, how the function of DST-OsCKX2 module is regulated during panicle development remains obscure.Result In this study, the ABNORMAL PANICLE 1 (ABP1), a severely allele of FRIZZY PANICLE (FZP), exhibits abnormal spikelets morphology. We show that FZP can repress the expression of DST via directly binding to its promotor. Consistently, the expression level of OsCKX2 increased and the cytokinin content decreased in the fzp mutant, suggesting that the FZP acts upstream of the DST-OsCKX2 to maintain cytokinin homeostasis in the inflorescence meristem.Conclusions Our results indicate that FZP plays an important role in regulating spikelet development and grain number through mediating cytokinin metabolism.

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