TY  - JOUR
A1  - Andrade, Luis
A1  - Lu, Yunlong
A1  - Cordeiro, Andre
A1  - Costa, João M. F.
A1  - Wigge, Philip Anthony
A1  - Saibo, Nelson J. M.
A1  - Jaeger, Katja E.
T1  - The evening complex integrates photoperiod signals to control flowering in rice
JF  - Proceedings of the National Academy of Sciences of the United States of America : PNAS
N2  - 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 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.
KW  - rice
KW  - flowering
KW  - ELF3
KW  - LUX
KW  - Evening Complex
Y1  - 2022
U6  - https://doi.org/10.1073/pnas.2122582119
SN  - 0027-8424
SN  - 1091-6490
VL  - 119
IS  - 26
PB  - National Acad. of Sciences
CY  - Washington
ER  -