Universität zu Köln

Haeusler, Rainer E., Heinrichs, Luisa, Schmitz, Jessica and Fluegge, Ulf-Ingo (2014). How Sugars Might Coordinate Chloroplast and Nuclear Gene Expression during Acclimation to High Light Intensities. Mol. Plant., 7 (7). S. 1121 - 1138. CAMBRIDGE: CELL PRESS. ISSN 1752-9867

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Abstract

The concept of retrograde control of nuclear gene expression assumes the generation of signals inside the chloroplasts, which are either released from or sensed inside of the organelle. In both cases, downstream signaling pathways lead eventually to a differential regulation of nuclear gene expression and the production of proteins required in the chloroplast. This concept appears reasonable as the majority of the over 3000 predicted plastidial proteins are encoded by nuclear genes. Hence, the nucleus needs information on the status of the chloroplasts, such as during acclimation responses, which trigger massive changes in the protein composition of the thylakoid membrane and in the stroma. Here, we propose an additional control mechanism of nuclear-and plastome-encoded photosynthesis genes, taking advantage of pathways involved in sugar-or hormonal signaling. Sugars are major end products of photosynthesis and their contents respond very sensitively to changes in light intensities. Based on recent findings, we ask the question as to whether the carbohydrate status outside the chloroplast can be directly sensed within the chloroplast stroma. Sugars might synchronize the responsiveness of both genomes and thereby help to coordinate the expression of plastome- and nuclear-encoded photosynthesis genes in concert with other, more specific retrograde signals.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Haeusler, Rainer E. UNSPECIFIED UNSPECIFIED UNSPECIFIED Heinrichs, Luisa UNSPECIFIED UNSPECIFIED UNSPECIFIED Schmitz, Jessica UNSPECIFIED UNSPECIFIED UNSPECIFIED Fluegge, Ulf-Ingo UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-434366
DOI:	10.1093/mp/ssu064
Journal or Publication Title:	Mol. Plant.
Volume:	7
Number:	7
Page Range:	S. 1121 - 1138
Date:	2014
Publisher:	CELL PRESS
Place of Publication:	CAMBRIDGE
ISSN:	1752-9867
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language TRIOSE-PHOSPHATE/PHOSPHATE TRANSLOCATOR; ARABIDOPSIS-THALIANA; PHOTOSYSTEM-II; PHOTOSYNTHETIC ACCLIMATION; TREHALOSE 6-PHOSPHATE; SIGNAL-TRANSDUCTION; REDOX REGULATION; STARCH SYNTHESIS; TRANSCRIPTION FACTORS; THYLAKOID MEMBRANES Multiple languages Biochemistry & Molecular Biology; Plant Sciences Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/43436