Polarly localized kinase SGN1 is required for Casparian strip integrity and positioning.

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Serval ID
serval:BIB_2A8137942F2B
Type
Article: article from journal or magazin.
Collection
Publications
Title
Polarly localized kinase SGN1 is required for Casparian strip integrity and positioning.
Journal
Nature Plants
Author(s)
Alassimone J., Fujita S., Doblas V.G., van Dop M., Barberon M., Kalmbach L., Vermeer J.E., Rojas-Murcia N., Santuari L., Hardtke C.S., Geldner N.
ISSN
2055-0278 (Electronic)
ISSN-L
2055-0278
Publication state
Published
Issued date
2016
Peer-reviewed
Oui
Volume
2
Pages
16113
Language
english
Abstract
Casparian strips are precisely localized and aligned ring-like cell wall modifications in the root of all higher plants. They set up an extracellular diffusion barrier analogous to animal tight junctions, and are crucial for maintaining the homeostatic capacity of plant roots. Casparian strips become localized because of the formation of a highly stable plasma membrane domain, consisting of a family of small transmembrane proteins called Casparian strip membrane domain proteins (CASPs). Here we report a large-scale forward genetic screen directly visualizing endodermal barrier function, which allowed us to identify factors required for the formation and integrity of Casparian strips. We present the identification and characterization of one of the mutants, schengen1 (sgn1), a receptor-like cytoplasmic kinase that we show localizes in a strictly polar fashion to the outer plasma membrane of endodermal cells and is required for the positioning and correct formation of the centrally located CASP domain.
Pubmed
Web of science
Create date
23/10/2016 12:50
Last modification date
20/08/2019 13:10
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