Cytoskeleton and plant salt stress tolerance

Abstract

The plant cytoskeleton is a highly dynamic component of plant cells and mainly based on microtubules (MTs), and actin filaments (AFs). The important functions of dynamic cytoskeletal networks have been indicated for almost every intracellular activity, from cell division to cell movement, cell morphogenesis and cell signal transduction. Recent studies have also indicated a close relationship between the plant cytoskeleton and plant salt stress tolerance. Salt stress is a significant factor that adversely affects crop productivity and quality of agricultural fields worldwide. The complicated regulatory mechanisms of plant salt tolerance have been the subject of intense research for decades. It is well accepted that cellular changes are very important in plant responses to salt stress. Because the organization and dynamics of cytoskeleton may play an important role in enhancing plant tolerance through various cell activities, study on salt stress-induced cytoskeletal network has been a vital topic in the subject of plant salt stress tolerance mechanisms. In this article, we introduce our recent work and review some current information on the dynamic changes and functions of cytoskeletal organization in response to salt stress. The accumulated data point to the existence of highly dynamic cytoskeletal arrays and the activation of complex cytoskeletal regulatory networks in response to salt stresses. The important role played by cytoskeleton in mediating the plant cell's response to salt stresses is particularly emphasized.

Chromosomal and Nuclear Alterations in the Root Tip Cells of Vicia faba Induced by Sodium Chloride

“…It is probable that Na þ and Clions disturb cell division. Both ion imbalance and osmotic stress, caused by increases in Na þ and Clions, were considered a major cause of changed assembly of microtubules in salt stressed plants (Wang et al, 2011). The effects of salt stress on tubulin assemblies and cortical microtubule organization have been previously studied (B¨ohm et al, 1990;Shoji et al, 2006).…”

Genome-Wide Identification, Characterization and Expression Profiling of ADF Family Genes in Solanum lycopersicum L.

“…Accordingly, cytoskeleton rearrangement is used as a marker for various stress signaling pathways such as salt, cold, gravity, osmotic pressure, wounding and pathogen attack [49,50,51,52]. Together, ADF, actin-related protein 2 (ARP2) and actin-binding protein 29 (ABP29) are involved in actin cytoskeleton remodeling under salt stress conditions [53].…”

Effect of n-butanol and cold pretreatment on the cytoskeleton and the ultrastructure of maize microspores when cultured in vitro

“…New functions of the cytoskeleton were found recently, such as phytohormone signalization (Lanza et al 2012) and programmed cell death (Smertenko and FranklinTong 2011). Nevertheless, there is a lack of information on the relation of the plant cytoskeleton and abiotic stresses, although the effects of salt and osmotic stresses (Wang et al 2011) and heat stress (Malerba et al 2010) are studied in some types of vegetative cells.…”