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Carbon dioxide and water transport through plant aquaporins

Groszmann, Michael; Osborn, Hannah; Evans, John

Description

Aquaporins are channel proteins that function to increase the permeability of biological membranes. In plants, aquaporins are encoded by multigene families that have undergone substantial diversification in land plants. The Plasma membrane Intrinsic Proteins (PIPs) subfamily of aquaporins are of particular interest given their potential to improve plant water relations and photosynthesis. Flowering plants have between 7 and 28 PIP genes. Their expression varies with tissue and cell type,...[Show more]

dc.contributor.authorGroszmann, Michael
dc.contributor.authorOsborn, Hannah
dc.contributor.authorEvans, John
dc.date.accessioned2021-02-23T04:18:12Z
dc.date.available2021-02-23T04:18:12Z
dc.identifier.issn0140-7791
dc.identifier.urihttp://hdl.handle.net/1885/224159
dc.description.abstractAquaporins are channel proteins that function to increase the permeability of biological membranes. In plants, aquaporins are encoded by multigene families that have undergone substantial diversification in land plants. The Plasma membrane Intrinsic Proteins (PIPs) subfamily of aquaporins are of particular interest given their potential to improve plant water relations and photosynthesis. Flowering plants have between 7 and 28 PIP genes. Their expression varies with tissue and cell type, through development and in response to a variety of factors, contributing to the dynamic and tissue specific control of permeability. There are a growing number of PIPs shown to act as water channels, but those altering membrane permeability to CO2 are more limited. The structural basis for selective substrate specificities has not yet been resolved, although a few key amino acid positions have been identified. Several regions important for dimerization, gating and trafficking are also known. PIP aquaporins assemble as tetramers and their properties depend on the monomeric composition. PIPs control water flux into and out of veins and stomatal guard cells and also increase membrane permeability to CO2 in mesophyll and stomatal guard cells. The latter increases the effectiveness of Rubisco and can potentially influence transpiration efficiency.
dc.description.sponsorshipWe thank the Australian Research Council for the financial support to the Centre of Excellence for Translational Photosynthesis CE140100015.
dc.format.mimetypeapplication/pdf
dc.language.isoen_AU
dc.publisherBlackwell Publishing Ltd
dc.rights© 2016 John Wiley & Sons Ltd
dc.sourcePlant Cell and Environment
dc.titleCarbon dioxide and water transport through plant aquaporins
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume40
dcterms.dateAccepted2016-09-22
dc.date.issued2016-10-14
local.identifier.absfor060705 - Plant Physiology
local.identifier.ariespublicationu4956746xPUB620
local.publisher.urlhttps://onlinelibrary.wiley.com/
local.type.statusAccepted Version
local.contributor.affiliationGroszmann, Michael, College of Science, ANU
local.contributor.affiliationOsborn, Hannah, College of Science, ANU
local.contributor.affiliationEvans, John, College of Science, ANU
dc.relationhttp://purl.org/au-research/grants/arc/CE140100015
local.bibliographicCitation.issue6
local.bibliographicCitation.startpage938
local.bibliographicCitation.lastpage961
local.identifier.doi10.1111/pce.12844
local.identifier.absseo970106 - Expanding Knowledge in the Biological Sciences
dc.date.updated2020-11-23T10:17:40Z
local.identifier.scopusID2-s2.0-84997377821
local.identifier.thomsonID000402735200012
dcterms.accessRightsOpen Access
dc.provenancehttps://v2.sherpa.ac.uk/id/publication/7155..."Author Accepted Manuscript can be made available open access on non-commercial institutional repository after 12 month embargo" from SHERPA/RoMEO site (as at 23.2.2021).
CollectionsANU Research Publications

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