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Phosphatidyl Ethanolamine Binding Protein FLOWERING LOCUS T-like 12 (OsFTL12) Regulates the Rice Heading Date under Different Day-Length Conditions

文献类型： 外文期刊

作者： Huang, Yongxiang 1 ; Guo, Jianfu 1 ; Sun, Dayuan 2 ; Guo, Zhenhua 3 ; Zheng, Zihao 4 ; Wang, Ping 5 ; Hong, Yanbin 6 ; Liu, Hao 6 ;

作者机构： 1.Guangdong Ocean Univ, Coll Coastal Agr Sci, Zhanjiang 524088, Peoples R China

2.Guangdong Acad Agr Sci, Plant Protect Res Inst, Guangzhou 510640, Peoples R China

3.Heilongjiang Acad Agr Sci, Rice Res Inst, Jiamusi 154026, Peoples R China

4.Iowa State Univ, Dept Agron, Ames, IA 50011 USA

5.Sichuan Acad Agr Sci, Biotechnol & Nucl Technol Res Inst, Chengdu 610066, Peoples R China

6.Guangdong Acad Agr Sci, Crops Res Inst, Guangdong Prov Key Lab Crop Genet Improvement, Guangzhou 510640, Peoples R China

关键词： AT-hook protein; flowering time; FTL homologous; H3 acetylation; transcription regulation

期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：5.6； 五年影响因子：6.2 ）

ISSN： 1661-6596

年卷期： 2024 年 25 卷 3 期

页码：

收录情况： SCI

摘要： Plant FLOWERING LOCUS T-Like (FTL) genes often redundantly duplicate on chromosomes and functionally diverge to modulate reproductive traits. Rice harbors thirteen FTL genes, the functions of which are still not clear, except for the Hd3a and RFT genes. Here, we identified the molecular detail of OsFTL12 in rice reproductive stage. OsFTL12 encoding protein contained PEBP domain and localized into the nucleus, which transcripts specifically expressed in the shoot and leaf blade with high abundance. Further GUS-staining results show the OsFTL12 promoter activity highly expressed in the leaf and stem. OsFTL12 knock-out concurrently exhibited early flowering phenotype under the short- and long-day conditions as compared with wild-type and over-expression plants, which independently regulates flowering without an involved Hd1/Hd3a and Ehd1/RFT pathway. Further, an AT-hook protein OsATH1 was identified to act as upstream regulator of OsFTL12, as the knock-out OsATH1 elevated the OsFTL12 expression by modifying Histone H3 acetylation abundance. According to the dissection of OsFTL12 molecular functions, our study expanded the roles intellectual function of OsFTL12 in the mediating of a rice heading date.

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