Abstract
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.
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Claims 4
Claim · model-written summary
Mutations in LUX and ELF3 paralogs abolish rice flowering.
- Taxon
- rice
Oryza sativae0 - Treatment
- mutants in the EC genes LUX ARRYTHMO ( LUX ) and EARLY FLOWERING3 ( ELF3 ) paralogse0
- Gene
- LUX ARRYTHMO ( LUX ) and EARLY FLOWERING3 ( ELF3 )e0
- Outcome
- rice floweringe0
- Direction
- abolishe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mutants in the EC genes LUX ARRYTHMO ( LUX ) and EARLY FLOWERING3 ( ELF3 ) paralogs abolish rice flowering”
Claim · model-written summary
The evening complex directly binds flowering repressors including PRR37 and Ghd7.
- Taxon
- riceOryza sativat0
- Gene
- PRR37 and Ghd7e0
- Outcome
- binds and suppresses the expression of flowering repressorse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the EC directly binds and suppresses the expression of flowering repressors, including PRR37 and Ghd7”
t0“flowering in rice”
Claim · model-written summary
The evening complex suppresses expression of flowering repressors including PRR37 and Ghd7.
- Taxon
- riceOryza sativat0
- Gene
- PRR37 and Ghd7e0
- Outcome
- expression of flowering repressorse0
- Direction
- suppressese0
- Qualifier
- the EC directly bindse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the EC directly binds and suppresses the expression of flowering repressors, including PRR37 and Ghd7”
t0“flowering in rice”
Claim · model-written summary
Light acting through phyB causes rapid and sustained posttranslational modification of ELF3-1.
- Taxon
- riceOryza sativat0
- Treatment
- lighte0
- Gene
- phyBe0
- Outcome
- posttranslational modification of ELF3-1e0
- Qualifier
- rapid and sustainede0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“light acts via phyB to cause a rapid and sustained posttranslational modification of ELF3-1”
t0“flowering in rice”
The same questions in other papers
loss of function · phenology · Oryza sativa (rice)Positive and negative results
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- positive
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