Document Detail


Cortical microtubule arrays lose uniform alignment between cells and are oryzalin resistant in the Arabidopsis mutant, radially swollen 6.
MedLine Citation:
PMID:  16760219     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The coordinated expansion of cells is essential to the formation of correctly shaped plant tissues and organs. Members of the radially swollen (rsw) class of temperature-sensitive arabidopsis mutants were isolated in a screen for reduced anisotropic expansion, by selecting plants with radially swollen root tips. Here we describe rsw6, in which cortical microtubules in the root epidermis are well organized in parallel arrays within cells, but neighboring cells frequently contain arrays differing in their mean orientation by up to 90 degrees. Microtubules in rsw6 are more resistant to oryzalin-induced depolymerization than wild-type microtubules, and their reorientation is accompanied by swelling of the epidermal cells. The reorientation phenotype is blocked by taxol and by the depolymerization of actin filaments. We propose that rsw6 microtubule organization is functional on a local level, but defective on a global scale. The rsw6 mutant provides a unique tool with which to study the coordination of microtubule organization at a multicellular level.
Authors:
Alex Bannigan; Allison M D Wiedemeier; Richard E Williamson; Robyn L Overall; Tobias I Baskin
Related Documents :
11541859 - Effects of hypergravity on the cell shape and on the organization of cytoskeleton and e...
12874119 - The role of par-1 in regulating the polarised microtubule cytoskeleton in the drosophil...
20980619 - Finding the cell center by a balance of dynein and myosin pulling and microtubule pushi...
20581449 - Centrosomal chk2 in dna damage responses and cell cycle progression.
24358349 - Highly efficient generation of ggta1 biallelic knockout inbred mini-pigs with talens.
11146659 - Rough deal and zw10 are required for the metaphase checkpoint in drosophila.
17164819 - Chronic social stress inhibits cell proliferation in the adult medial prefrontal cortex...
19236559 - Development and characterization of cell lines derived from rohu, labeo rohita (hamilto...
1371209 - In vitro activation of bronchoalveolar lavage cells by house dust mite allergens.
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.     Date:  2006-06-07
Journal Detail:
Title:  Plant & cell physiology     Volume:  47     ISSN:  0032-0781     ISO Abbreviation:  Plant Cell Physiol.     Publication Date:  2006 Jul 
Date Detail:
Created Date:  2006-07-19     Completed Date:  2006-11-09     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9430925     Medline TA:  Plant Cell Physiol     Country:  Japan    
Other Details:
Languages:  eng     Pagination:  949-58     Citation Subset:  IM    
Affiliation:
Biology Department, University of Massachusetts, Amherst, MA, USA. alexb@bio.umass.edu
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Actins / physiology
Anisotropy
Antineoplastic Agents, Phytogenic / pharmacology
Arabidopsis / cytology,  genetics*
Arabidopsis Proteins / genetics*
Cell Line
Dinitrobenzenes / pharmacology*
Drug Resistance
Genes, Plant / genetics
Microtubules / drug effects*,  ultrastructure
Mutation / genetics*
Paclitaxel / pharmacology
Phenotype
Plant Roots / cytology,  drug effects,  growth & development
Plants, Genetically Modified
Sulfanilamides / pharmacology*
Tubulin Modulators / pharmacology*
Chemical
Reg. No./Substance:
0/Actins; 0/Antineoplastic Agents, Phytogenic; 0/Arabidopsis Proteins; 0/Dinitrobenzenes; 0/Sulfanilamides; 0/Tubulin Modulators; 19044-88-3/oryzalin; 33069-62-4/Paclitaxel

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


Previous Document:  The three maize sucrose synthase isoforms differ in distribution, localization, and phosphorylation.
Next Document:  Hormone interactions and regulation of Unifoliata, PsPK2, PsPIN1 and LE gene expression in pea (Pisu...