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Article

Phytochromes promote seedling light responses by inhibiting four negatively-acting phytochrome-interacting factors.

Proceedings of the National Academy of Sciences of the United States of America - 5 May 2009

Shin Jieun, Kim Keunhwa, Kang Hyojin, Zulfugarov Ismayil S, Bae Gabyong, Lee Choon-Hwan, Lee Doheon, Choi Giltsu

Abstract excerpt

PIF3 is a phytochrome-interacting basic helix-loop-helix transcription factor that negatively regulates light responses, including hypocotyl elongation, cotyledon opening, and hypocotyl negative gravitropism. However, the role of PIF3 in chlorophyll biosynthesis has not been clearly defined. Here, we show that PIF3 also negatively regulates chlorophyll biosynthesis by repressing biosynthetic genes in the dark....

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Source

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Identifiers

PMID: 19380720
DOI: 10.1073/pnas.0812219106
PMCID: PMC2678665

Genes

PIF1

Provenance

PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 7 Sept 2026. Manifest publication-graph-cohort-2026-09-08.1.

Source receipt: pubmed, retrieved 7 Sept 2026.

Related research

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Research trail→

Click a neighbor to travelStep 1 · 12 closest

Phytochromes promote seedling light responses by inhibiting four negatively-acting phytochrome-interacting factors.PMID 19380720Read ↗

Functional profiling identifies genes involved in organ-specific branches of the PIF3 regulatory network in Arabidopsis.Semantic proximity Read ↗

PIF3 is a repressor of chloroplast development.Semantic proximity Read ↗

Dimerization and blue light regulation of PIF1 interacting bHLH proteins in Arabidopsis.Semantic proximity Read ↗

14-3-3 proteins participate in light signaling through association with PHYTOCHROME INTERACTING FACTORs.Semantic proximity Read ↗

Phytochrome interacting factors 4 and 5 redundantly limit seedling de-etiolation in continuous far-red light.Semantic proximity Read ↗

Genome-wide regulation of light-controlled seedling morphogenesis by three families of transcription factors.Semantic proximity Read ↗

Antagonistic basic helix-loop-helix/bZIP transcription factors form transcriptional modules that integrate light and reactive oxygen species signaling in Arabidopsis.Semantic proximity Read ↗

Phytochrome-imposed oscillations in PIF3 protein abundance regulate hypocotyl growth under diurnal light/dark conditions in Arabidopsis.Semantic proximity Read ↗

PIF1 promotes phytochrome-regulated growth under photoperiodic conditions in Arabidopsis together with PIF3, PIF4, and PIF5.Semantic proximity Read ↗

The phytochrome-interacting transcription factor, PIF3, acts early, selectively, and positively in light-induced chloroplast development.Semantic proximity Read ↗

Arabidopsis VQ MOTIF-CONTAINING PROTEIN29 represses seedling deetiolation by interacting with PHYTOCHROME-INTERACTING FACTOR1.Semantic proximity Read ↗

The basic helix-loop-helix transcription factor PIF5 acts on ethylene biosynthesis and phytochrome signaling by distinct mechanisms.Semantic proximity Read ↗

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