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Article

The Arabidopsis SPA1 gene is required for circadian clock function and photoperiodic flowering.

The Plant journal : for cell and molecular biology - 1 Jun 2006

Ishikawa Masaki, Kiba Takatoshi, Chua Nam-Hai

Abstract excerpt

Arabidopsis phytochrome A (phyA) regulates not only seed germination and seedling de-etiolation but also circadian rhythms and flowering time in adult plants. The SUPPRESSOR OF PHYA-105 (SPA1) acts as a negative regulator of phyA-mediated de-etiolation of young seedlings, but its roles in adult plants have not yet been described. Here, we show that SPA1 is involved in regulating circadian rhythms and flowering...

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Identifiers

PMID: 16709190
DOI: 10.1111/j.1365-313X.2006.02737.x

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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.

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The Arabidopsis SPA1 gene is required for circadian clock function and photoperiodic flowering.PMID 16709190Read ↗

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The SPA quartet: a family of WD-repeat proteins with a central role in suppression of photomorphogenesis in arabidopsis.Semantic proximity Read ↗

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Degradation of Arabidopsis CRY2 is regulated by SPA proteins and phytochrome A.Semantic proximity Read ↗

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