A voltage-dependent chloride channel fine-tunes photosynthesis in plants.

Herdean, A; Teardo, E; Nilsson, AK; Pfeil, BE; Johansson, ON; Ünnep, R; Nagy, G; Zsiros, O; Dana, S; Solymosi, K; Garab, G; Szabó, I; Spetea, C; Lundin, B

A voltage-dependent chloride channel fine-tunes photosynthesis in plants.

Teardo, E Nilsson, AK Pfeil, BE Johansson, ON Ünnep, R Nagy, G Zsiros, O Dana, S Solymosi, K Garab, G Szabó, I Spetea, C Lundin, B

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Publisher:: NATURE PUBLISHING GROUP
Publication Type:: Journal Article
Citation:: Nature communications, 2016, 7, (1), pp. 11654
Issue Date:: 2016-05-24

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Field	Value	Language
dc.contributor.author	Herdean, A https://orcid.org/0000-0003-2143-0213
dc.contributor.author	Teardo, E
dc.contributor.author	Nilsson, AK
dc.contributor.author	Pfeil, BE
dc.contributor.author	Johansson, ON
dc.contributor.author	Ünnep, R
dc.contributor.author	Nagy, G
dc.contributor.author	Zsiros, O
dc.contributor.author	Dana, S
dc.contributor.author	Solymosi, K
dc.contributor.author	Garab, G
dc.contributor.author	Szabó, I
dc.contributor.author	Spetea, C
dc.contributor.author	Lundin, B
dc.date.accessioned	2020-09-04T00:30:38Z
dc.date.available	2016-04-16
dc.date.available	2020-09-04T00:30:38Z
dc.date.issued	2016-05-24
dc.identifier.citation	Nature communications, 2016, 7, (1), pp. 11654
dc.identifier.issn	2041-1723
dc.identifier.issn	2041-1723
dc.identifier.uri	http://hdl.handle.net/10453/142542
dc.description.abstract	In natural habitats, plants frequently experience rapid changes in the intensity of sunlight. To cope with these changes and maximize growth, plants adjust photosynthetic light utilization in electron transport and photoprotective mechanisms. This involves a proton motive force (PMF) across the thylakoid membrane, postulated to be affected by unknown anion (Cl(-)) channels. Here we report that a bestrophin-like protein from Arabidopsis thaliana functions as a voltage-dependent Cl(-) channel in electrophysiological experiments. AtVCCN1 localizes to the thylakoid membrane, and fine-tunes PMF by anion influx into the lumen during illumination, adjusting electron transport and the photoprotective mechanisms. The activity of AtVCCN1 accelerates the activation of photoprotective mechanisms on sudden shifts to high light. Our results reveal that AtVCCN1, a member of a conserved anion channel family, acts as an early component in the rapid adjustment of photosynthesis in variable light environments.
dc.format	Electronic
dc.language	eng
dc.publisher	NATURE PUBLISHING GROUP
dc.relation.ispartof	Nature communications
dc.relation.isbasedon	10.1038/ncomms11654
dc.rights	info:eu-repo/semantics/restrictedAccess
dc.subject.mesh	Thylakoids
dc.subject.mesh	Plants, Genetically Modified
dc.subject.mesh	Arabidopsis
dc.subject.mesh	Chlorides
dc.subject.mesh	Chloride Channels
dc.subject.mesh	Mitochondrial Proteins
dc.subject.mesh	Arabidopsis Proteins
dc.subject.mesh	Microscopy, Electron, Transmission
dc.subject.mesh	Photosynthesis
dc.subject.mesh	Electron Transport
dc.subject.mesh	Proton-Motive Force
dc.subject.mesh	Mutation
dc.subject.mesh	Light
dc.subject.mesh	Electrophysiological Phenomena
dc.subject.mesh	RNA Splicing Factors
dc.subject.mesh	Arabidopsis
dc.subject.mesh	Arabidopsis Proteins
dc.subject.mesh	Chloride Channels
dc.subject.mesh	Chlorides
dc.subject.mesh	Electron Transport
dc.subject.mesh	Electrophysiological Phenomena
dc.subject.mesh	Light
dc.subject.mesh	Microscopy, Electron, Transmission
dc.subject.mesh	Mitochondrial Proteins
dc.subject.mesh	Mutation
dc.subject.mesh	Photosynthesis
dc.subject.mesh	Plants, Genetically Modified
dc.subject.mesh	Proton-Motive Force
dc.subject.mesh	RNA Splicing Factors
dc.subject.mesh	Thylakoids
dc.title	A voltage-dependent chloride channel fine-tunes photosynthesis in plants.
dc.type	Journal Article
utslib.citation.volume	7
utslib.location.activity	England
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Strength - C3 - Climate Change Cluster
pubs.organisational-group	/University of Technology Sydney
utslib.copyright.status	recently_added	*
dc.date.updated	2020-09-04T00:30:20Z
pubs.issue	1
pubs.publication-status	Published
pubs.volume	7
utslib.citation.issue	1

Abstract:

In natural habitats, plants frequently experience rapid changes in the intensity of sunlight. To cope with these changes and maximize growth, plants adjust photosynthetic light utilization in electron transport and photoprotective mechanisms. This involves a proton motive force (PMF) across the thylakoid membrane, postulated to be affected by unknown anion (Cl(-)) channels. Here we report that a bestrophin-like protein from Arabidopsis thaliana functions as a voltage-dependent Cl(-) channel in electrophysiological experiments. AtVCCN1 localizes to the thylakoid membrane, and fine-tunes PMF by anion influx into the lumen during illumination, adjusting electron transport and the photoprotective mechanisms. The activity of AtVCCN1 accelerates the activation of photoprotective mechanisms on sudden shifts to high light. Our results reveal that AtVCCN1, a member of a conserved anion channel family, acts as an early component in the rapid adjustment of photosynthesis in variable light environments.

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http://hdl.handle.net/10453/142542