Document Detail

Salt stress triggers enhanced cycling of Arabidopsis root plasma-membrane aquaporins.
MedLine Citation:
PMID:  22499180     Owner:  NLM     Status:  MEDLINE    
Aquaporins of the plasma membrane intrinsic protein (PIP) subfamily are channels which facilitate the diffusion of water across the plant plasma membrane (PM). Although PIPs have been considered as canonical protein markers of this compartment, their endomembrane trafficking is still not well documented. We recently obtained insights into the constitutive cycling of PIPs in Arabidopsis root cells by means of fluorescence recovery after photobleaching (FRAP). This work also uncovered the behavior of the model isoform AtPIP2;1 in response to NaCl. The present addendum connects these findings to another recent work which describes the dynamic properties of AtPIP2;1 in the PM in normal and salt stress conditions by means of single particle tracking (SPT) and fluorescence correlation spectroscopy (FCS). The results suggest that membrane rafts play an important role in the partitioning of AtPIP2;1 in normal conditions and that clathrin-mediated endocytosis is predominant. In salt stress conditions, the rate of AtPIP2;1 cycling was enhanced and endocytosis was cooperated by a membrane raft-associated salt-induced pathway and a clathrin-dependent pathway.
Alexandre Martinière; Xiaojuan Li; John Runions; Jinxing Lin; Christophe Maurel; Doan-Trung Luu
Publication Detail:
Type:  Journal Article     Date:  2012-04-01
Journal Detail:
Title:  Plant signaling & behavior     Volume:  7     ISSN:  1559-2324     ISO Abbreviation:  Plant Signal Behav     Publication Date:  2012 Apr 
Date Detail:
Created Date:  2012-09-17     Completed Date:  2013-02-07     Revised Date:  2013-06-26    
Medline Journal Info:
Nlm Unique ID:  101291431     Medline TA:  Plant Signal Behav     Country:  United States    
Other Details:
Languages:  eng     Pagination:  529-32     Citation Subset:  IM    
Department of Biological and Medical Sciences, Oxford Brookes University, Oxford, UK.
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MeSH Terms
Aquaporins / metabolism*
Arabidopsis / cytology,  drug effects,  physiology*
Arabidopsis Proteins / metabolism*
Cell Membrane / drug effects,  metabolism*
Endocytosis / drug effects
Plant Roots / cytology,  drug effects,  metabolism*
Protein Transport / drug effects
Sodium Chloride / pharmacology*
Stress, Physiological / drug effects*
Reg. No./Substance:
0/Aquaporins; 0/Arabidopsis Proteins; 7647-14-5/Sodium Chloride

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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