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Aquaporins and water homeostasis in plants

Kjellbom, Per LU ; Larsson, Christer LU ; Johansson, Ingela; Karlsson, Maria and Johanson, Urban LU (1999) In Trends in Plant Science 4(8). p.308-314
Abstract
Aquaporins are water channel proteins of vacuolar and plasma membranes. When opened they facilitate the passive movement of water molecules down a water potential gradient. In Arabidopsis, 30 genes have been found that code for aquaporin homologues. Some of these genes code for highly abundant constitutively expressed proteins and some are known to be temporally and spatially regulated during development and in response to stress. The water transport activity of two aquaporins is regulated at the protein level by phosphorylation and dephosphorylation. At a given time, cells express several different aquaporins, and it is probable that vacuolar and plasma membrane aquaporins acting in concert are responsible for the cytosolic osmoregulation... (More)
Aquaporins are water channel proteins of vacuolar and plasma membranes. When opened they facilitate the passive movement of water molecules down a water potential gradient. In Arabidopsis, 30 genes have been found that code for aquaporin homologues. Some of these genes code for highly abundant constitutively expressed proteins and some are known to be temporally and spatially regulated during development and in response to stress. The water transport activity of two aquaporins is regulated at the protein level by phosphorylation and dephosphorylation. At a given time, cells express several different aquaporins, and it is probable that vacuolar and plasma membrane aquaporins acting in concert are responsible for the cytosolic osmoregulation that is necessary for maintaining normal metabolic processes. Inhibition studies of aquaporins in vivo and antisense mutant studies suggest that, in addition to cytosolic osmoregulation, aquaporins are important for the bulk flow of water in plants. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Aquaporins, Water channels, Cellular water balance, Cystolic osmoregulation, Water homeostasis, Membrane transport
in
Trends in Plant Science
volume
4
issue
8
pages
308 - 314
publisher
Elsevier
external identifiers
  • scopus:0033179434
ISSN
1360-1385
DOI
10.1016/S1360-1385(99)01438-7
language
English
LU publication?
yes
id
a2cf8b7e-f8e3-4142-a7cf-4d2e6c482130 (old id 1428966)
alternative location
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&dopt=Citation&list_uids=10431220
date added to LUP
2009-06-23 14:56:36
date last changed
2017-07-23 03:40:10
@article{a2cf8b7e-f8e3-4142-a7cf-4d2e6c482130,
  abstract     = {Aquaporins are water channel proteins of vacuolar and plasma membranes. When opened they facilitate the passive movement of water molecules down a water potential gradient. In Arabidopsis, 30 genes have been found that code for aquaporin homologues. Some of these genes code for highly abundant constitutively expressed proteins and some are known to be temporally and spatially regulated during development and in response to stress. The water transport activity of two aquaporins is regulated at the protein level by phosphorylation and dephosphorylation. At a given time, cells express several different aquaporins, and it is probable that vacuolar and plasma membrane aquaporins acting in concert are responsible for the cytosolic osmoregulation that is necessary for maintaining normal metabolic processes. Inhibition studies of aquaporins in vivo and antisense mutant studies suggest that, in addition to cytosolic osmoregulation, aquaporins are important for the bulk flow of water in plants.},
  author       = {Kjellbom, Per and Larsson, Christer and Johansson, Ingela and Karlsson, Maria and Johanson, Urban},
  issn         = {1360-1385},
  keyword      = {Aquaporins,Water channels,Cellular water balance,Cystolic osmoregulation,Water homeostasis,Membrane transport},
  language     = {eng},
  number       = {8},
  pages        = {308--314},
  publisher    = {Elsevier},
  series       = {Trends in Plant Science},
  title        = {Aquaporins and water homeostasis in plants},
  url          = {http://dx.doi.org/10.1016/S1360-1385(99)01438-7},
  volume       = {4},
  year         = {1999},
}