OsFLZ2 interacts with OsMADS51 to fine-tune rice flowering time

文献类型： 外文期刊

第一作者： Ma, Yamei

作者： Ma, Yamei;Dong, Jingfang;Yang, Wu;Chen, Luo;Wu, Wei;Li, Wenhui;Zhou, Lian;Wang, Jian;Chen, Jiansong;Yang, Tifeng;Zhang, Shaohong;Zhao, Junliang;Liu, Bin;Ma, Yamei;Dong, Jingfang;Yang, Wu;Chen, Luo;Wu, Wei;Li, Wenhui;Zhou, Lian;Wang, Jian;Chen, Jiansong;Yang, Tifeng;Zhang, Shaohong;Zhao, Junliang;Liu, Bin;Ma, Yamei;Dong, Jingfang;Yang, Wu;Chen, Luo;Wu, Wei;Li, Wenhui;Zhou, Lian;Wang, Jian;Chen, Jiansong;Yang, Tifeng;Zhang, Shaohong;Zhao, Junliang;Liu, Bin

作者机构：

关键词： Flowering time; FLZ; OsMADS51; Ehd1; Rice

期刊名称：DEVELOPMENT （ 影响因子：4.6； 五年影响因子：6.1 ）

ISSN： 0950-1991

年卷期： 2022 年 149 卷 24 期

页码：

收录情况： SCI

摘要： Flowering time is an important agronomic trait affecting crop yield. FCS-LIKE ZINC FINGER (FLZ) proteins are plant-specific regulatory proteins that are involved in multiple biological processes. However, their roles in plant flowering time control have not been clarified. Here, we report that OsFLZ2 is a negative regulator of rice flowering time. OsFLZ2 delays flowering by repressing the expression of key floral integrator genes. Biochemical assays showed OsFLZ2 physically interacts with OsMADS51, a flowering activator under short-day (SD) conditions. Both OsFLZ2 and OsMADS51 are highly expressed in rice leaves before floral transition under natural SD conditions, and their proteins are colocalized in the nucleus. Co-expression of OsFLZ2 can destabilize OsMADS51 and weaken its transcriptional activation of the downstream target gene Early heading date 1 (Ehd1). Taken together, these results indicate that OsFLZ2 can interfere with the function of OsMADS51 to fine-tune rice flowering time.

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