Document Detail

Emerging aspects of ER organization in root hair tip growth: lessons from RHD3 and Atlastin.
MedLine Citation:
PMID:  22057320     Owner:  NLM     Status:  MEDLINE    
Cell polarity is a fundamental aspect of eukaryotic cells. A central question for cell biologists is how the polarity of a cell is established and maintained. Root hairs are exceptionally polarized structures formed from specific root epidermal cells. The morphogenesis of root hairs is characterized by the localized cell growth in a small dome at the tip of the hair, a process called tip growth. Root hairs are thus an attractive model system to study the establishment and maintenance of cell polarity in eukaryotes. Research on Arabidopsis root hairs has identified a plethora of molecular and cellular components that are important for root hair tip growth. Recently, studies on RHD3 and Atlastin have revealed a surprising similarity with respect to the role of the tubular ER network in tip growth of root hairs in plants and the axonal outgrowth of corticospinal neurons in neurological disorders known as hereditary spastic paraplegia (HSP). In this mini-review, we highlight recent progress in understanding of the function and regulation of RHD3 in the generation of the tubular ER network and discussed ways in which RHD3 could be involved in the establishment and maintenance of root hair tip growth.
Huanquan Zheng; Jun Chen
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Review     Date:  2011-11-01
Journal Detail:
Title:  Plant signaling & behavior     Volume:  6     ISSN:  1559-2324     ISO Abbreviation:  Plant Signal Behav     Publication Date:  2011 Nov 
Date Detail:
Created Date:  2012-02-16     Completed Date:  2012-05-14     Revised Date:  2013-06-27    
Medline Journal Info:
Nlm Unique ID:  101291431     Medline TA:  Plant Signal Behav     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1710-3     Citation Subset:  IM    
Developmental Biology Research Initiatives, Department of Biology, McGill University, Montreal, Quebec, Canada.
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MeSH Terms
Arabidopsis / growth & development,  metabolism*
Arabidopsis Proteins / metabolism*
Cell Polarity
Endoplasmic Reticulum / metabolism*
GTP-Binding Proteins / metabolism*
Golgi Apparatus / metabolism
Meristem / metabolism*
Plant Cells / metabolism
Plant Roots / growth & development*
Reg. No./Substance:
0/Arabidopsis Proteins; EC 3.6.1.-/GTP-Binding Proteins; EC 3.6.1.-/RHD3 protein, Arabidopsis

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

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