title: The heat-shock protein/chaperone network and multiple stress resistance.
abstract: Crop yield has been greatly enhanced during the last century. However, most elite cultivars are adapted to temperate climates and are not well suited to more stressful conditions. In the context of climate change, stress resistance is a major concern. To overcome these difficulties, scientists may help breeders by providing genetic markers associated with stress resistance. However, multistress resistance cannot be obtained from the simple addition of single stress resistance traits. In the field, stresses are unpredictable and several may occur at once. Consequently, the use of single stress resistance traits is often inadequate. Although it has been historically linked with the heat stress response, the heat-shock protein (HSP)/chaperone network is a major component of multiple stress responses. Among the HSP/chaperone 'client proteins', many are primary metabolism enzymes and signal transduction components with essential roles for the proper functioning of a cell. HSPs/chaperones are controlled by the action of diverse heat-shock factors, which are recruited under stress conditions. In this review, we give an overview of the regulation of the HSP/chaperone network with a focus on Arabidopsis thaliana. We illustrate the role of HSPs/chaperones in regulating diverse signalling pathways and discuss several basic principles that should be considered for engineering multiple stress resistance in crops through the HSP/chaperone network.
authors.affiliation: Institute of Plant Science-Paris-Saclay, Orsay, France.
authors.forename: Pierre
authors.initials: P
authors.lastname: Jacob
authors.affiliation: Center for Desert Agriculture, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia.
authors.forename: Heribert
authors.initials: H
authors.lastname: Hirt
authors.affiliation: Institute of Plant Science-Paris-Saclay, Orsay, France.
authors.forename: Abdelhafid
authors.initials: A
authors.lastname: Bendahmane
mesh_terms: D017360:Arabidopsis / Q000235:genetics / Q000378:metabolism; D018506:Gene Expression Regulation, Plant / Q000235:genetics / Q000502:physiology; D006360:Heat-Shock Proteins / Q000235:genetics / Q000378:metabolism*; D018869:Heat-Shock Response / Q000235:genetics / Q000502:physiology; D006358:Hot Temperature; D018832:Molecular Chaperones / Q000235:genetics / Q000378:metabolism*
chemical_list: D006360:Heat-Shock Proteins; D018832:Molecular Chaperones
keywords: HSF; HSPs/chaperones; crop improvement; multistress resistance; stress acclimation