Plant heat-shock proteins: A mini review

By M. Al-Whaibi. 2011

472 citations recorded by the source corpus.

Abstract Plants as sessile organisms are exposed to persistently changing stress factors. The primary stresses such as drought, salinity, cold and hot temperatures and chemicals are interconnected in their effects on plants. These factors cause damage to the plant cell and lead to secondary stresses such as osmotic and oxidative stresses. Plants cannot avoid the exposure to these factors but adapt morphologically and physiologically by some other mechanisms. Almost all stresses induce the production of a group of proteins called heat-shock proteins (Hsps) or stress-induced proteins. The induction of transcription of these proteins is a common phenomenon in all living things. These proteins are grouped in plants into five classes according to their approximate molecular weight: (1) Hsp100, (2) Hsp90, (3) Hsp70, (4) Hsp60 and (5) small heat-shock proteins (sHsps). Higher plants have at least 20 sHsps and there might be 40 kinds of these sHsps in one plant species. It is believed that this diversification of these proteins reflects an adaptation to tolerate the heat stress. Transcription of heat-shock protein genes is controlled by regulatory proteins called heat stress transcription factors (Hsfs). Plants show at least 21 Hsfs with each one having its role in regulation, but they also cooperate in all phases of periodical heat stress responses (triggering, maintenance and recovery). There are more than 52 plant species (including crop ones) that have been genetically engineered for different traits such as yield, herbicide and insecticide resistance and some metabolic changes. In conclusion, major heat-shock proteins have some kind of related roles in solving the problem of misfolding and aggregation, as well as their role as chaperones.

Subfields: Molecular Biology, Physical and Theoretical Chemistry, Plant Science

View Paper: https://www.semanticscholar.org/paper/79c4664e68de72bbd76f56fcf4d1ae6a175a695b

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Citations in the corpus

Tomato tolerance to abiotic stress: a review of most often engineered target sequences (2017, background): “Besides, this sHSPs also play a protective role against multifarious environmental stresses such as salinity, heat, cold, drought, heavy metal and oxidative stress (Al-Whaibi 2011).”
Unraveling Field Crops Sensitivity to Heat Stress：Mechanisms, Approaches, and Future Prospects (2018, background): “These proteins are grouped into five classes in plants, according to their molecular weight: Hsp100, Hsp90, Hsp70, Hsp60, and small heat-shock proteins (sHSPs) [148] (Table 2).”
The heat‐shock protein/chaperone network and multiple stress resistance (2017, background): “The molecular mechanisms underlying the functions of HSPs have been extensively reviewed (Al-Whaibi, 2011; Fu, 2014; Niforou et al., 2014; Wang et al., 2013).”
Mechanisms of Plasma-Seed Treatments as a Potential Seed Processing Technology (2021, background): “Theymay also accumulate under oxidative stress, high intensity irradiation, and desiccation [111].”
The effects of grapevine trunk diseases (GTDs) on vine physiology (2016, background): “Small HSPs may act as molecular chaperones, resulting in the maintenance of cellular conditions suitable for inducible plant defence responses (Maimbo et al. 2007) and there are reports indicating their involvement in response to various abiotic or biotic stresses (Al-Whaibi 2011).”