ArticlePlant physiology2002
The negatively acting factors EID1 and SPA1 have distinct functions in phytochrome A-specific light signaling.
Article in Plant physiology, 2002. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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14 citing papers in PubMed, 39 citations in OpenAlex.
- Mining candidate genes for maize plant height based on a GWAS, Meta-QTL, and WGCNA.Frontiers in plant science · 2025Article
- GmEID1 modulates light signaling through the Evening Complex to control flowering time and yield in soybean.Proceedings of the National Academy of Sciences of the United States of America · 2023Article
- Article
- The mediator complex subunit PFT1 interferes with COP1 and HY5 in the regulation of Arabidopsis light signaling.Plant physiology · 2012Article
- Plastids are major regulators of light signaling in Arabidopsis.Plant physiology · 2012Article
- EDL3 is an F-box protein involved in the regulation of abscisic acid signalling in Arabidopsis thaliana.Journal of experimental botany · 2011Article
- Phytochrome A-specific signaling in Arabidopsis thaliana.Plant signaling & behavior · 2011Review
- Article
- Phytochrome signaling mechanisms.The arabidopsis book · 2011Article
- Bell-like homeodomain selectively regulates the high-irradiance response of phytochrome A.Proceedings of the National Academy of Sciences of the United States of America · 2009Article
- The histidine kinase-related domain of Arabidopsis phytochrome a controls the spectral sensitivity and the subcellular distribution of the photoreceptor.Plant physiology · 2009Article
- The ubiquitin-proteasome pathway and plant development.The Plant cell · 2004Review
- The SPA quartet: a family of WD-repeat proteins with a central role in suppression of photomorphogenesis in arabidopsis.The Plant cell · 2004Article
- Review
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4 authors at 1 institution in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
EID1 (empfindlicher im dunkelroten Licht) and SPA1 (suppressor of phytochrome A[phyA]-105) function as negatively acting components in phyA-specific light signaling. Mutants in the respective genes led to very similar phenotypes under weak-light conditions. To examine whether both genes are functionally redundant, detailed physiological and genetic analyses were performed with eid1 and spa1 mutants isolated from the same wild-type background. Measurements of hypocotyl elongation, anthocyanin accumulation, and Lhcb1-transcript accumulation under different light treatments demonstrated that SPA1 has a strong influence on the regulation of very low fluence responses and a weaker influence on high-irradiance responses. In contrast, EID1 severely altered high-irradiance responses and caused almost no change on very low fluence responses. Analyses on eid1 phyA-105 double mutants demonstrated that EID1 could not suppress the phenotype of the weak phyA allele under continuous far-red light. Measurements on eid1 spa1 double mutants exhibited a strong interference of both genes in the regulation of hypocotyl elongation. These results indicate that EID1 and SPA1 are involved in different but interacting phyA-dependent signal transduction chains.
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