Document Detail

Cell-type-specific disruption and recovery of the cytoskeleton in Arabidopsis thaliana epidermal root cells upon heat shock stress.
MedLine Citation:
PMID:  17458637     Owner:  NLM     Status:  MEDLINE    
The cytoskeleton in plant cells plays an important role in controlling cell shape and mediating intracellular signalling. However, almost nothing is known about the reactions of cytoskeletal elements to heat stress, which represents one of the major environmental challenges for plants. Here we show that living epidermal root cells of Arabidopsis thaliana could cope with short-term heat shock stress showing disruption and subsequent recovery of microtubules and actin microfilaments in a time-dependent manner. Time-lapse imaging revealed a very dynamic behavior of both cytoskeletal elements including transient depolymerization and disassembly upon heat shock (40-41 degrees C) followed by full recovery at room temperature (20 degrees C) within 1-3 h. Reaction of microtubules, but not actin filaments, to heat shock was dependent on cell type and developmental stage. On the other hand, recovery of actin filaments, but not microtubules, from heat shock stress was dependent on the same parameters. The relevance of this adaptive cytoskeletal behavior to intracellular signalling is discussed.
J Müller; D Menzel; J Samaj
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Publication Detail:
Type:  Journal Article     Date:  2007-04-24
Journal Detail:
Title:  Protoplasma     Volume:  230     ISSN:  0033-183X     ISO Abbreviation:  Protoplasma     Publication Date:  2007  
Date Detail:
Created Date:  2007-04-26     Completed Date:  2007-10-19     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9806853     Medline TA:  Protoplasma     Country:  Austria    
Other Details:
Languages:  eng     Pagination:  231-42     Citation Subset:  IM    
Institute of Cellular and Molecular Botany, University of Bonn, Bonn, Federal Republic of Germany.
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MeSH Terms
Adaptation, Physiological / physiology
Arabidopsis / cytology,  metabolism*
Cytoskeleton / metabolism*,  ultrastructure
Heat-Shock Proteins / metabolism
Heat-Shock Response / physiology*
Microfilaments / metabolism,  ultrastructure
Microtubule-Associated Proteins / metabolism
Plant Epidermis / cytology,  metabolism*
Plant Roots / cytology,  metabolism*
Recovery of Function / physiology
Reg. No./Substance:
0/Heat-Shock Proteins; 0/Microtubule-Associated Proteins

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