Authors: J Müller D Menzel J Šamaj
Publish Date: 2007/04/24
Volume: 230, Issue: 3-4, Pages: 231-242
Abstract
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 shortterm heat shock stress showing disruption and subsequent recovery of microtubules and actin microfilaments in a timedependent manner Timelapse imaging revealed a very dynamic behavior of both cytoskeletal elements including transient depolymerization and disassembly upon heat shock 40–41 °C followed by full recovery at room temperature 20 °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
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