OsELF3-1, an Ortholog of Arabidopsis EARLY FLOWERING 3, Regulates Rice Circadian Rhythm and Photoperiodic Flowering

被引：101

作者：

Zhao, Junming ^{[1
,2
]}

Huang, Xi ^{[3
,4
]}

Ouyang, Xinhao ^{[1
,2
,4
]}

Chen, Weilan ^{[1
,2
]}

Du, Anping ^{[1
,2
]}

Zhu, Ling ^{[1
,2
]}

Wang, Shiguang ^{[1
,2
]}

Deng, Xing Wang ^{[4
]}

Li, Shigui ^{[1
,2
]}

机构：

[1] Sichuan Agr Univ, Rice Res Inst, Chengdu, Sichuan, Peoples R China

[2] Sichuan Agr Univ, State Key Lab Hybrid Rice, Chengdu, Sichuan, Peoples R China

[3] Beijing Normal Univ, Coll Life Sci, Beijing 100875, Peoples R China

[4] Peking Univ, Coll Life Sci, Natl Lab Prot Engn & Plant Genet Engn, Peking Yale Joint Ctr Plant Mol Genet & Agrobiote, Beijing 100871, Peoples R China

来源：

PLOS ONE | 2012年 / 7卷 / 08期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

ARABIDOPSIS-THALIANA; AMBIENT-TEMPERATURE; RESPONSE REGULATOR; NATURAL VARIATION; ORYZA-SATIVA; CLOCK; GENE; PROTEIN; ELF3; TIME;

D O I：

10.1371/journal.pone.0043705

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Arabidopsis thaliana EARLY FLOWERING 3 (ELF3) as a zeitnehmer (time taker) is responsible for generation of circadian rhythm and regulation of photoperiodic flowering. There are two orthologs (OsELF3-1 and OsELF3-2) of ELF3 in rice (Oryza sativa), but their roles have not yet been fully identified. Here, we performed a functional characterization of OsELF3-1 and revealed it plays a more predominant role than OsELF3-2 in rice heading. Our results suggest OsELF3-1 can affect rice circadian systems via positive regulation of OsLHY expression and negative regulation of OsPRR1, OsPRR37, OsPRR73 and OsPRR95 expression. In addition, OsELF3-1 is involved in blue light signaling by activating EARLY HEADING DATE 1 (Ehd1) expression to promote rice flowering under short-day (SD) conditions. Moreover, OsELF3-1 suppresses a flowering repressor GRAIN NUMBER, PLANT HEIGHT AND HEADING DATE 7 (Ghd7) to indirectly accelerate flowering under long-day (LD) conditions. Taken together, our results indicate OsELF3-1 is essential for circadian regulation and photoperiodic flowering in rice.

引用

页数：10

共 64 条

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