Physiological, Biochemical, and Molecular Mechanisms of Heat Stress Tolerance in Plants

By M. Hasanuzzaman, Kamrun Nahar, Mahabub Alam, R. Roychowdhury, M. Fujita. International Journal of Molecular Sciences, 2013

1,936 citations recorded by the source corpus.

High temperature (HT) stress is a major environmental stress that limits plant growth, metabolism, and productivity worldwide. Plant growth and development involve numerous biochemical reactions that are sensitive to temperature. Plant responses to HT vary with the degree and duration of HT and the plant type. HT is now a major concern for crop production and approaches for sustaining high yields of crop plants under HT stress are important agricultural goals. Plants possess a number of adaptive, avoidance, or acclimation mechanisms to cope with HT situations. In addition, major tolerance mechanisms that employ ion transporters, proteins, osmoprotectants, antioxidants, and other factors involved in signaling cascades and transcriptional control are activated to offset stress-induced biochemical and physiological alterations. Plant survival under HT stress depends on the ability to perceive the HT stimulus, generate and transmit the signal, and initiate appropriate physiological and biochemical changes. HT-induced gene expression and metabolite synthesis also substantially improve tolerance. The physiological and biochemical responses to heat stress are active research areas, and the molecular approaches are being adopted for developing HT tolerance in plants. This article reviews the recent findings on responses, adaptation, and tolerance to HT at the cellular, organellar, and whole plant levels and describes various approaches being taken to enhance thermotolerance in plants.

Subfields: Global and Planetary Change, Plant Science

View Paper: https://www.semanticscholar.org/paper/8ed25e68a2ff2719842a48ebc99da5c07ad66954

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Citations in the corpus

Heat Stress at Reproductive Stage Disrupts Leaf Carbohydrate Metabolism, Impairs Reproductive Function, and Severely Reduces Seed Yield in Lentil (2016, background): “cellular level, heat stress leads to membrane damage, protein denaturation, enzyme inactivation in mitochondria and chloroplasts, impaired carbohydrate and protein synthesis, protein degradation, impaired carbon metabolism, and synthesis of new defense-related proteins (Hasanuzzaman et al. 2013).”
Climate Change Impacts and Adaptation Strategies of Agriculture in Mediterranean-Climate Regions (MCRs) (2019, background): “There is evidence that the increase in temperatures associated with CC may reduce the yield and quality of crops [17,46,47].”
Reactive Oxygen Species and Antioxidant Defense in Plants under Abiotic Stress: Revisiting the Crucial Role of a Universal Defense Regulator (2020, background): “High temperature (HT) leads to the overproduction of ROS, resulting in altered cellular metabolism, inactivated oxygen-evolving complex and increased lipid peroxidation, membrane damage, and nicking of DNA, and further, it drives to cell death (Table 1) [111].”
Recent Developments in Enzymatic Antioxidant Defence Mechanism in Plants with Special Reference to Abiotic Stress (2021, background): “In T. aestivum, it was established that temperature stress induced the uptake and accumulation of GSH content and enhanced enzyme activities involved in GSH synthesis and the ratio of GSH/GSSG [209] α-tocopherol balance the cel- lular Na+/K+ homeostasis and hormonal balance [210].”
Factors Affecting Yield of Crops (2020, background): “Heat stress is the rise in temperature beyond a threshold level for a period sufficient to cause permanent damage to plant growth and development [18].”
Roles of exogenous glutathione in antioxidant defense system and methylglyoxal detoxification during salt stress in mung bean (2015, background): “ROS can also cause oxidation of nucleic acids, substantial cellular damage, and even programmed cell death (Gill and Tuteja 2010, Hasanuzzaman et al. 2012, 2013).”
Abscisic Acid and Abiotic Stress Tolerance in Crop Plants (2016, background): “According to various studies, abiotic stresses trigger many physiological, biochemical, and molecular responses that influence various cellular processes in plants (Wang et al., 2001, 2003; Hasanuzzaman et al., 2013).”