title: How do plants feel the heat?
abstract: In plants, the heat stress response (HSR) is highly conserved and involves multiple pathways, regulatory networks and cellular compartments. At least four putative sensors have recently been proposed to trigger the HSR. They include a plasma membrane channel that initiates an inward calcium flux, a histone sensor in the nucleus, and two unfolded protein sensors in the endoplasmic reticulum and the cytosol. Each of these putative sensors is thought to activate a similar set of HSR genes leading to enhanced thermotolerance, but the relationship between the different pathways and their hierarchical order is unclear. In this review, we explore the possible involvement of different thermosensors in the plant response to warming and heat stress.
authors.affiliation: Department of Biological Sciences, College of Arts and Sciences, University of North Texas, 1155 Union Circle #305220, Denton, TX 76203, USA. Pierre.Goloubinoff@unil.ch
authors.forename: Ron
authors.initials: R
authors.lastname: Mittler
authors.forename: Andrija
authors.initials: A
authors.lastname: Finka
authors.forename: Pierre
authors.initials: P
authors.lastname: Goloubinoff
mesh_terms: D017360:Arabidopsis / Q000378:metabolism* / Q000502:physiology; D015220:Calcium Channels / Q000378:metabolism* / Q000502:physiology; D002462:Cell Membrane / Q000378:metabolism / Q000502:physiology; D003600:Cytosol / Q000378:metabolism; D004721:Endoplasmic Reticulum / Q000378:metabolism / Q000502:physiology; D018869:Heat-Shock Response / Q000235:genetics* / Q000502:physiology; D006657:Histones / Q000378:metabolism; D053858:Metabolic Networks and Pathways / Q000235:genetics / Q000502:physiology; D018521:Plant Physiological Phenomena; D013696:Temperature; D056811:Unfolded Protein Response / Q000502:physiology
chemical_list: D015220:Calcium Channels; D006657:Histones