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The evening complex integrates photoperiod signals to control flowering in rice
- Plants use photoperiodism to activate flowering in response to a particular daylength. In rice, flowering is accelerated in short-day conditions, and even a brief exposure to light during the dark period (night-break) is sufficient to delay flowering. Although many of the genes involved in controlling flowering in rice have been uncovered, how the long- and short-day flowering pathways are integrated, and the mechanism of photoperiod perception is not understood. While many of the signaling components controlling photoperiod-activated flowering are conserved between Arabidopsis and rice, flowering in these two systems is activated by opposite photoperiods. Here we establish that photoperiodism in rice is controlled by the evening complex (EC). We show that mutants in the EC genes LUX ARRYTHMO (LUX) and EARLY FLOWERING3 (ELF3) paralogs abolish rice flowering. We also show that the EC directly binds and suppresses the expression of flowering repressors, including PRR37 and Ghd7. We further demonstrate that light acts via phyB to cause aPlants use photoperiodism to activate flowering in response to a particular daylength. In rice, flowering is accelerated in short-day conditions, and even a brief exposure to light during the dark period (night-break) is sufficient to delay flowering. Although many of the genes involved in controlling flowering in rice have been uncovered, how the long- and short-day flowering pathways are integrated, and the mechanism of photoperiod perception is not understood. While many of the signaling components controlling photoperiod-activated flowering are conserved between Arabidopsis and rice, flowering in these two systems is activated by opposite photoperiods. Here we establish that photoperiodism in rice is controlled by the evening complex (EC). We show that mutants in the EC genes LUX ARRYTHMO (LUX) and EARLY FLOWERING3 (ELF3) paralogs abolish rice flowering. We also show that the EC directly binds and suppresses the expression of flowering repressors, including PRR37 and Ghd7. We further demonstrate that light acts via phyB to cause a rapid and sustained posttranslational modification of ELF3-1. Our results suggest a mechanism by which the EC is able to control both long- and short-day flowering pathways.…
Author details: | Luis AndradeORCiD, Yunlong LuORCiD, Andre CordeiroORCiD, João M. F. CostaORCiD, Philip Anthony WiggeORCiDGND, Nelson J. M. SaiboORCiD, Katja E. JaegerORCiD |
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DOI: | https://doi.org/10.1073/pnas.2122582119 |
ISSN: | 0027-8424 |
ISSN: | 1091-6490 |
Pubmed ID: | https://pubmed.ncbi.nlm.nih.gov/35733265 |
Title of parent work (English): | Proceedings of the National Academy of Sciences of the United States of America : PNAS |
Publisher: | National Acad. of Sciences |
Place of publishing: | Washington |
Publication type: | Article |
Language: | English |
Date of first publication: | 2022/06/21 |
Publication year: | 2022 |
Release date: | 2024/01/22 |
Tag: | ELF3; Evening Complex; LUX; flowering; rice |
Volume: | 119 |
Issue: | 26 |
Article number: | e2122582119 |
Number of pages: | 8 |
Funding institution: | Fundacao para a Ciencia e Tecnologia (FCT) [PTDC/BIA-FBT/31070/2017,; UIDB/04551/2020, UIDP/04551/2020, PD/BD/114416/2016]; Leibniz IGZ;; Leibniz Association |
Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Biochemie und Biologie |
DDC classification: | 5 Naturwissenschaften und Mathematik / 50 Naturwissenschaften / 500 Naturwissenschaften und Mathematik |
Peer review: | Referiert |
Publishing method: | Open Access / Hybrid Open-Access |
License (German): | CC-BY-NC-ND - Namensnennung, nicht kommerziell, keine Bearbeitungen 4.0 International |