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Article

Independent and interdependent functions of LAF1 and HFR1 in phytochrome A signaling.

Genes & development - 15 Aug 2007

Jang In-Cheol, Yang Seong Wook, Yang Jun-Yi, Chua Nam-Hai

Abstract excerpt

Several positive regulators of phytochrome A signaling--e.g., LAF1, HFR1, and HY5--operate downstream from the photoreceptor, but their relative sites of action in the transduction pathway are unknown. Here, we show that HFR1RNAi/laf1 or hfr1-201/LAF1RNAi generated by RNA interference (RNAi) has...

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Source

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Identifiers

PMID: 17699755
DOI: 10.1101/gad.1568207
PMCID: PMC1948863

Genes

COP1
MYB

Provenance

PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 4 Sept 2026. Prepared record publication-17699755-2026-09-04.2. Manifest publication-graph-cohort-2026-09-04.2.

Source receipt: PubMed via Helena Literature Corpus, retrieved 4 Sept 2026.

Related research

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Research trail→

Click a neighbor to travelStep 1 · 12 closest

Independent and interdependent functions of LAF1 and HFR1 in phytochrome A signaling.PMID 17699755Read ↗

Three transcription factors, HFR1, LAF1 and HY5, regulate largely independent signaling pathways downstream of phytochrome A.Semantic proximity Read ↗

FAR-RED ELONGATED HYPOCOTYL1 and FHY1-LIKE associate with the Arabidopsis transcription factors LAF1 and HFR1 to transmit phytochrome A signals for inhibition of hypocotyl elongation.Semantic proximity Read ↗

HFR1, a phytochrome A-signalling component, acts in a separate pathway from HY5, downstream of COP1 in Arabidopsis thaliana.Semantic proximity Read ↗

HFR1 encodes an atypical bHLH protein that acts in phytochrome A signal transduction.Semantic proximity Read ↗

Light regulates COP1-mediated degradation of HFR1, a transcription factor essential for light signaling in Arabidopsis.Semantic proximity Read ↗

EID1, an F-box protein involved in phytochrome A-specific light signaling.Semantic proximity Read ↗

Arabidopsis FHY1 protein stability is regulated by light via phytochrome A and 26S proteasome.Semantic proximity Read ↗

FHY1: a phytochrome A-specific signal transducer.Semantic proximity Read ↗

HFR1, a putative bHLH transcription factor, mediates both phytochrome A and cryptochrome signalling.Semantic proximity Read ↗

A short amino-terminal part of Arabidopsis phytochrome A induces constitutive photomorphogenic response.Semantic proximity Read ↗

Characterization of photomorphogenic responses and signaling cascades controlled by phytochrome-A expressed in different tissues.Semantic proximity Read ↗

The histidine kinase-related domain of Arabidopsis phytochrome a controls the spectral sensitivity and the subcellular distribution of the photoreceptor.Semantic proximity Read ↗

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