Abstract
Photoperiodic flowering in plants is orchestrated by the dynamic interaction between light signals and the endogenous circadian clock, but how light signals integrate into the clock remains to be fully elucidated. Here, we identify ELD1, a CCHC-type zinc finger protein that is essential for rice embryo survival. Notably, partial loss of ELD1 function results in early flowering under long-day conditions. Further investigations demonstrate that ELD1 physically interacts with OsNKAP, an orthologue of mammal NF-κB activating protein, as well as core splicing factors to regulate the splicing profile of OsCCA1, a core oscillator of the circadian clock. Molecular and genetic evidence indicate that OsCCA1 is the primary target of ELD1 in controlling flowering time. Additionally, ELD1 interacts with photoactivated phyB, mediating red-light-regulated alternative splicing of OsCCA1. Collectively, our findings establish a molecular connection between light signaling and the circadian clock, with ELD1 modulating OsCCA1 alternative splicing to control photoperiodic flowering. ELD1, a CCHC-type zinc finger protein, is found to modulate alternative splicing of the core oscillator gene OsCCA1 and thereby regulate photoperiodic flowering in rice. This reveals additional links between light signaling and the circadian clock.
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Claims 5
Claim · model-written summary
ELD1 is essential for rice embryo survival.
- Taxon
- rice
Oryza sativae0 - Gene
- ELD1e0
- Outcome
- rice embryo survivale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in rice”
e0“ELD1, a CCHC-type zinc finger protein that is essential for rice embryo survival”
Claim · model-written summary
Partial loss of ELD1 function produces early flowering under long-day conditions.
- Taxon
- riceOryza sativat0
- Treatment
- partial loss of ELD1 functione0
- Gene
- ELD1e0
- Outcome
- floweringe0
- Direction
- earlye0
- Qualifier
- long-day conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in rice”
e0“partial loss of ELD1 function results in early flowering under long-day conditions”
Claim · model-written summary
ELD1 physically interacts with OsNKAP and core splicing factors to regulate OsCCA1 splicing.
- Taxon
- riceOryza sativat0
- Gene
- ELD1e0
- Outcome
- splicing profile of OsCCA1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in rice”
e0“ELD1 physically interacts with OsNKAP, an orthologue of mammal NF-κB activating protein, as well as core splicing factors to regulate the splicing profile of OsCCA1”
Claim · model-written summary
OsCCA1 is the primary ELD1 target controlling flowering time.
- Taxon
- riceOryza sativat0
- Gene
- OsCCA1e0
- Outcome
- flowering timee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in rice”
e0“OsCCA1 is the primary target of ELD1 in controlling flowering time”
Claim · model-written summary
ELD1 interacts with photoactivated phyB in red-light-regulated OsCCA1 alternative splicing.
- Taxon
- riceOryza sativat0
- Gene
- ELD1e0
- Outcome
- alternative splicing of OsCCA1e0
- Qualifier
- red-light-regulatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in rice”
e0“ELD1 interacts with photoactivated phyB, mediating red-light-regulated alternative splicing of OsCCA1”