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ID 49036
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Author
Sasano, Sizuka
Katsuhara, Maki
Abstract
Water homeostasis is crucial to the growth and survival of plants. Plasma membrane intrinsic proteins (PIPs) have been shown to be primary channels mediating water uptake in plant cells. We characterized a novel PIP2 gene, HvPIP2;8 in barley (Hordeum vulgare). HvPIP2;8 shared 72–76% identity with other HvPIP2s and 74% identity with rice OsPIP2;8. The gene was expressed in all organs including the shoots, roots and pistil at a similar level. When HvPIP2;8 was transiently expressed in onion epidermal cells, it was localized to the plasma membrane. HvPIP2;8 showed transport activity for water in Xenopus oocytes, however its interaction with HvPIP1;2 was not observed. These results suggest that HvPIP2;8 plays a role in water homeostasis although further functional analysis is required in future.
Keywords
aquaporin
plasma membrane intrinsic protein
PIP
HvPIP2;8
water transport
barley
Hordeum vulgare
Xenopus laevis oocytes
Published Date
2012-12
Publication Title
Plant Signaling & Behavior
Volume
volume7
Issue
issue12
Start Page
1842
End Page
1846
ISSN
1559-2316
Content Type
Journal Article
Official Url
http://dx.doi.org/10.4161/psb.22294
language
英語
Copyright Holders
© 2012 Landes Bioscience
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Refereed
True
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PubMed ID