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Article

Nuclear phytochrome A signaling promotes phototropism in Arabidopsis.

The Plant cell - 1 Feb 2012

Kami Chitose, Hersch Micha, Trevisan Martine, Genoud Thierry, Hiltbrunner Andreas, Bergmann Sven, Fankhauser Christian

Abstract excerpt

Phototropin photoreceptors (phot1 and phot2 in Arabidopsis thaliana) enable responses to directional light cues (e.g., positive phototropism in the hypocotyl). In Arabidopsis, phot1 is essential for phototropism in response to low light, a response that is also modulated by phytochrome A (phyA), representing a classical example of photoreceptor coaction. The molecular mechanisms underlying promotion of...

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Identifiers

PMID: 22374392
DOI: 10.1105/tpc.111.095083
PMCID: PMC3315233

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Nuclear phytochrome A signaling promotes phototropism in Arabidopsis.PMID 22374392Read ↗

Arabidopsis fhl/fhy1 double mutant reveals a distinct cytoplasmic action of phytochrome A.Semantic proximity Read ↗

Arabidopsis FHY1 and FHY1-LIKE Are Not Required for Phytochrome A Signal Transduction in the Nucleus.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 ↗

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

Phytochrome A null mutants of Arabidopsis display a wild-type phenotype in white light.Semantic proximity Read ↗

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

A growth regulatory loop that provides homeostasis to phytochrome a signaling.Semantic proximity Read ↗

Regulation of phytochrome B signaling by phytochrome A and FHY1 in Arabidopsis thaliana.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 ↗

Phytochrome A antagonizes PHYTOCHROME INTERACTING FACTOR 1 to prevent over-activation of photomorphogenesis.Semantic proximity Read ↗

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

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

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