Universität zu Köln

Maier, Alexander and Hoecker, Ute ORCID: 0000-0002-5636-9777 (2015). COP1/SPA ubiquitin ligase complexes repress anthocyanin accumulation under low light and high light conditions. Plant Signal. Behav., 10 (1). PHILADELPHIA: TAYLOR & FRANCIS INC. ISSN 1559-2324

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Abstract

In Arabidopsis and many other plant species, anthocyanin pigments accumulate only after light exposure and not in darkness. Excess light of very high fluence rates leads to a further, very strong increase in anthocyanin levels. How excess light is sensed is not well understood. Here, we show that mutations in the key repressor of light signaling, the COP1/SPA complex, cause a strong hyperaccumulation of anthocyanins not only under normal light but also under excess, high light conditions. Hence, normal light signaling via COP1/SPA is required to prevent hyperaccumulation of anthocyanins under these high light conditions. However, since cop1 and spa mutants show a similar high-light responsiveness of anthocyanin accumulation as the wild type it remains to be resolved whether COP1/SPA is directly involved in the high-light response itself.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Maier, Alexander UNSPECIFIED UNSPECIFIED UNSPECIFIED Hoecker, Ute UNSPECIFIED orcid.org/0000-0002-5636-9777 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-419679
DOI:	10.4161/15592316.2014.970440
Journal or Publication Title:	Plant Signal. Behav.
Volume:	10
Number:	1
Date:	2015
Publisher:	TAYLOR & FRANCIS INC
Place of Publication:	PHILADELPHIA
ISSN:	1559-2324
Language:	English
Faculty:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Biology > Botanical Institute
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language TRANSCRIPTION FACTOR; EXPRESSION ANALYSIS; GENE-EXPRESSION; HY5; BIOSYNTHESIS; ARABIDOPSIS; MYB Multiple languages Biochemistry & Molecular Biology; Plant Sciences Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/41967