FRIZZLE PANICLE (FZP) regulates rice spikelets development through modulating cytokinin metabolism
文献类型： 外文期刊
作者： Wang, Wei 1 ; Chen, Wenqiang 2 ; Wang, Junmin 1 ;
作者机构： 1.Zhejiang Acad Agr Sci, Hangzhou 310021, Peoples R China
2.Yangtze Univ, Coll Agr, Engn Res Ctr Ecol & Agr Use Wetland, Minist Educ, Jingzhou 434025, Hubei, Peoples R China
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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