Regulation of the synthesis of normal cellular proteins during heat shock

Abstract

Exposure of plant cells to heat shock temperature results in the synthesis of a set of heat shock proteins and, in many cases, the interruption of normal cellular protein synthesis. In some plant secretory cells the interruption of normal cellular protein synthesis is accomplished by the destabilization of otherwise stable mRNAs, perhaps via the dissociation of the endoplasmic reticulum lamellae upon which these mRNAs are translated. Such a mechanism represents a novel means for the regulation of gene expression.

Enhancement of red-light-induced anthocyanin synthesis in sorghum first internodes by moderate low temperature given in the pre-irradiation culture period

“…A shift from 24 to 28 ~ C at the time of irradiation was also not promotive. Thus, the enhancement effect of MLT is also distinct from the so-called heat shock, which occurs with short-term exposure from 15 min to a few hours (Brodl 1989).…”

Phytochemicals in Fruit and Vegetables: Health Promotion and Postharvest Elicitors

“…Heat treatment is one method that allows the reduction of postharvest quality loss and suppression of pathogen development by inducing modifications in the physiological and physicochemical processes of fruit and vegetables after harvest (Brodl, 1989). However, exposure of fresh commodities to heat also affects cellular protein synthesis leading to inactivation of enzymes related to quality loss, e.g., in texture and color (Lurie, 1998;Ben-Yehoshua, 2003).…”

Expression of three sHSP genes involved in heat pretreatment‐induced chilling tolerance in banana fruit

“…The heat shock protein (HSP) superfamily is one of the most ubiquitous and evolutionarily conserved groups of molecular chaperones across all species in response to thermal stress 17–19. It is composed of a diverse group of proteins, ranging in molecular weight from 15 to 115 kDa, which are believed to play a major role in thermotolerance 20.…”