ArticleGenome biology2023
Phytochromes transmit photoperiod information via the evening complex in Brachypodium.
Article in Genome biology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- From photoperiod thresholds to photoperiod sensitivity: dual strategies for cost-effective speed breeding and climate-ready barley.Frontiers in plant science · 2026Article
- Breeding for delayed bolting decelerated the circadian clock in cultivated lettuce.The New phytologist · 2025Article
- The FKF1-ELF3-PRC2 module regulates flowering time in response to light in temperate grasses.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- Early Flowering 3 (ELF3) Inhibits Hypocotyl Phototropism in Light-GrownPlant direct · 2025Article
- Transcriptional activation and repression in the plant circadian clock: Revisiting core oscillator feedback loops and output pathways.Plant communications · 2025Review
- The H3K4 demethylase JMJ1 is required for proper timing of flowering in Brachypodium distachyon.The Plant cell · 2024Article
- early maturity 7 promotes early flowering by controlling the light input into the circadian clock in barley.Plant physiology · 2024Article
- Phytochromes transmit photoperiod information via the evening complex in Brachypodium.Genome biology · 2023Article
- Wheat EARLY FLOWERING 3 affects heading date without disrupting circadian oscillations.Plant physiology · 2023Article
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Authors and funding
15 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundDaylength is a key seasonal cue for animals and plants. In cereals, photoperiodic responses are a major adaptive trait, and alleles of clock genes such as PHOTOPERIOD1 (PPD1) and EARLY FLOWERING3 (ELF3) have been selected for in adapting barley and wheat to northern latitudes. How monocot plants sense photoperiod and integrate this information into growth and development is not well understood.
resultsWe find that phytochrome C (PHYC) is essential for flowering in Brachypodium distachyon. Conversely, ELF3 acts as a floral repressor and elf3 mutants display a constitutive long day phenotype and transcriptome. We find that ELF3 and PHYC occur in a common complex. ELF3 associates with the promoters of a number of conserved regulators of flowering, including PPD1 and VRN1. Consistent with observations in barley, we are able to show that PPD1 overexpression accelerates flowering in short days and is necessary for rapid flowering in response to long days. PHYC is in the active Pfr state at the end of the day, but we observe it undergoes dark reversion over the course of the night.
conclusionsWe propose that PHYC acts as a molecular timer and communicates information on night-length to the circadian clock via ELF3.
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