Abstract
Significance Nitrogen availability has a large impact on plant biomass and crop production. Both depletion and excessive application of nitrogen affect crop yields and quality and disturb important ecosystems. Thus, understanding the mechanisms by which nitrogen regulates developmental transitions affecting reproduction, such as flowering, is important to sustainably improve crop yields. Our study identified FBH4 as a key transcription factor mediating nitrogen-responsive flowering in Arabidopsis . Nitrogen levels control the FBH4 phosphorylation state that modulates transcriptional activity as a molecular switch to induce flowering. The cellular fuel sensor SnRK1 catalyzes FBH4 phosphorylation and negatively regulates florigen levels in high nitrogen conditions. These findings will enable new molecular breeding strategies to achieve better crop yields through optimized flowering time under different nitrogen conditions.
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Claims 4
Claim · model-written summary
FBH4 mediates nitrogen-responsive flowering in Arabidopsis.
- Taxon
- Arabidopsis
Arabidopsise0 - Gene
- FBH4e0
- Outcome
- nitrogen-responsive floweringe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“FBH4 as a key transcription factor mediating nitrogen-responsive flowering in Arabidopsis”
Claim · model-written summary
Nitrogen levels control FBH4 phosphorylation, which modulates transcriptional activity to induce flowering.
- Taxon
- ArabidopsisArabidopsise1
- Treatment
- Nitrogen levelse0
- Gene
- FBH4e0
- Outcome
- phosphorylation statee0
- Qualifier
- to induce floweringe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen levels control the FBH4 phosphorylation state that modulates transcriptional activity as a molecular switch to induce flowering”
e1“Arabidopsis”
Claim · model-written summary
SnRK1 catalyzes FBH4 phosphorylation.
- Taxon
- ArabidopsisArabidopsise1
- Gene
- SnRK1e0
- Outcome
- FBH4 phosphorylatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SnRK1 catalyzes FBH4 phosphorylation”
e1“Arabidopsis”
Claim · model-written summary
SnRK1 negatively regulates florigen levels in high nitrogen conditions.
- Taxon
- ArabidopsisArabidopsise1
- Gene
- SnRK1e0
- Outcome
- florigen levelse0
- Direction
- negatively regulatese0
- Qualifier
- high nitrogen conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SnRK1 catalyzes FBH4 phosphorylation and negatively regulates florigen levels in high nitrogen conditions”
e1“Arabidopsis”