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Plos One : Oself3-1, an Ortholog of Arabidopsis Early Flowering 3, Regulates Rice Circadian Rhythm and Photoperiodic Flowering, Volume 7

By Somers, David, Edward

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Book Id: WPLBN0003957875
Format Type: PDF eBook :
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Reproduction Date: 2015

Title: Plos One : Oself3-1, an Ortholog of Arabidopsis Early Flowering 3, Regulates Rice Circadian Rhythm and Photoperiodic Flowering, Volume 7  
Author: Somers, David, Edward
Volume: Volume 7
Language: English
Subject: Journals, Science, Medical Science
Collections: Periodicals: Journal and Magazine Collection (Contemporary)
Historic
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Publisher: Plos

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Somers, D. E. (n.d.). Plos One : Oself3-1, an Ortholog of Arabidopsis Early Flowering 3, Regulates Rice Circadian Rhythm and Photoperiodic Flowering, Volume 7. Retrieved from http://worldebookfair.com/


Description
Description : 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.

 

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