Heat stress in cultivated plants: nature, impact, mechanisms, and mitigation strategies—a review

Hassan, Muhammad Umair; Chattha, Muhammad Umer; Khan, Imran; Chattha, Muhammad Bilal; Barbanti, Lorenzo; Aamer, Muhammad; Iqbal, Muhammad Mehmood; Nawaz, Muhammad; Mahmood, Athar; Ali, Abid; Aslam, Muhammad

doi:10.1080/11263504.2020.1727987

Cited by 186 publications

(174 citation statements)

References 264 publications

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“…Optimal temperatures differ between developmental stages for the same plant, and between different crop species. When the maximum temperature in this window is exceeded, it can have adverse effects on plant growth and development [ 1 ]. Due to global warming, the earths’ surface temperature is steadily increasing, which can offset the maximum temperature for a variety of crop plants [ 2 , 3 ].…”

Section: Introductionmentioning

confidence: 99%

Arabidopsis bZIP18 and bZIP52 Accumulate in Nuclei Following Heat Stress where They Regulate the Expression of a Similar Set of Genes

Wiese

Steinbachová

Timofejeva

et al. 2021

IJMS

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Heat stress (HS) is a major abiotic stress that negatively impacts crop yields across the globe. Plants respond to elevated temperatures by changing gene expression, mediated by transcription factors (TFs) functioning to enhance HS tolerance. The involvement of Group I bZIP TFs in the heat stress response (HSR) is not known. In this study, bZIP18 and bZIP52 were investigated for their possible role in the HSR. Localization experiments revealed their nuclear accumulation following heat stress, which was found to be triggered by dephosphorylation. Both TFs were found to possess two motifs containing serine residues that are candidates for phosphorylation. These motifs are recognized by 14–3–3 proteins, and bZIP18 and bZIP52 were found to bind 14–3–3 ε, the interaction of which sequesters them to the cytoplasm. Mutation of both residues abolished 14–3–3 ε interaction and led to a strict nuclear localization for both TFs. RNA-seq analysis revealed coordinated downregulation of several metabolic pathways including energy metabolism and translation, and upregulation of numerous lncRNAs in particular. These results support the idea that bZIP18 and bZIP52 are sequestered to the cytoplasm under control conditions, and that heat stress leads to their re-localization to nuclei, where they jointly regulate gene expression.

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Section: Introductionmentioning

confidence: 99%

Arabidopsis bZIP18 and bZIP52 Accumulate in Nuclei Following Heat Stress where They Regulate the Expression of a Similar Set of Genes

Wiese

Steinbachová

Timofejeva

et al. 2021

IJMS

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“…Thermal stress is a major threat to the cell, causing protein denaturation and compromising membrane integrity, leading to the death of plant cells [ 3 , 4 ]. Understanding the balance between temperature perception and plant defense can provide a foundation for enhancing plant tolerance (defined as the ability to compensate in part for fitness decrements caused by stress [ 5 ]) to thermal stress and improving economic efficiency.…”

Section: Introductionmentioning

confidence: 99%

“…Understanding the balance between temperature perception and plant defense can provide a foundation for enhancing plant tolerance (defined as the ability to compensate in part for fitness decrements caused by stress [ 5 ]) to thermal stress and improving economic efficiency. Eukaryotic cells respond to heat shock by elevating the transcription of heat shock proteins (HSPs), many of which function in preventing or repairing the damage caused by heat stress and thus confer enhanced thermotolerance [ 3 , 6 ]. Recent work has revealed that plant HSPs are classified into five major groups: HSP100s, HSP90s, HSP70s, HSP60s and small HSPs (sHSPs) [ 7 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

One Heat Shock Transcription Factor Confers High Thermal Tolerance in Clematis Plants

Wang

Mao

Jiang

et al. 2021

IJMS

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Clematis plants play an important role in botanical gardens. Heat stress can destroy the activity, state and conformation of plant proteins, and its regulatory pathway has been well characterized in Arabidopsis and some crop plants. However, the heat resistance response mechanism in horticultural plants including Clematis has rarely been reported. Here, we identified a heat-tolerant clematis species, Clematis vitalba. The relative water loss and electrolytic leakage were significantly lower under heat treatment in Clematis vitalba compared to Stolwijk Gold. Differential expression heat-tolerant genes (HTGs) were identified based on nonparametric transcriptome analysis. For validation, one heat shock transcription factor, CvHSF30-2, extremely induced by heat stimuli in Clematis vitalba, was identified to confer tolerance to heat stress in Escherichia coli and Saccharomyces cerevisiae. Furthermore, silencing of HSF30-2 by virus-induced gene silencing (VIGS) led to heat sensitivity in tobacco and Clematis, suggesting that the candidate heat-resistant genes identified in this RNA-seq analysis are credible and offer significant utility. We also found that CvHSF30-2 improved heat tolerance of Clematis vitalba by elevating heat shock protein (HSP) expression, which was negatively regulated by CvHSFB2a. Taken together, this study provides insights into the mechanism of Clematis heat tolerance and the findings can be potentially applied in horticultural plants to improve economic efficiency through genetic approaches.

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“…The global warming phenomenon leads to an increase in climatic instability that adversely affects ecosystem quality, plant growth, and agricultural production (Schauberger et al, 2017; Hassan et al, 2020). Terminal high-temperature stress is a term referring to the progressive rise of temperature during the day and in consecutive days during the reproduction stage in both spring and winter type cereals (Bahrami et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

“…The recent global warming phenomenon is giving rise to an aggravating climatic instability that adversely affects ecosystem quality, plant growth, and agricultural production (Schauberger et al 2017;Hassan et al 2020).…”

mentioning

confidence: 99%

A novel tolerance index to identify heat tolerance in cultivated and wild barley genotypes

Bahrami

Arzani

Rahimmalek

2020

Preprint

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Thermal stress at the reproductive stage poses a substantial constraint on cereal production worldwide. A two-year field study was conducted to assess tolerance to terminal heat stress in cultivated (Hordeum vulgare ssp. vulgare L.) and wild (H. vulgare ssp. spontaneum L.) barley genotypes using phenological and agronomic traits as well as selection indices based on grain yield. A new heat-tolerance index was tested while a simultaneous study was also carried out of both phenological and grain yield-related variables as well as previously defined indices. Results of analysis of variance showed the significant genotypic and high-temperature stress (environment) effects on all the traits studied. In contrast to the cultivated genotypes, the wild ones were found less affected by high-temperature stress. Moreover, both cultivated and wild genotypes were observed to use the life cycle shortening as a mechanism to evade heat stress. In addition, supplementary tolerance mechanisms were also found likely to contribute to heatstress evasion in the wild germplasm. Grain yield showed a strong relationship with both stress tolerance index (STI) and heat tolerance index (HTI) among the wild genotypes. However, multivariate analysis highlighted the feasibility of HTI to screen high-temperature tolerant wild genotypes under harsh environments with the most high-temperature tolerant wild genotypes identified originating from warm climates.

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Heat stress in cultivated plants: nature, impact, mechanisms, and mitigation strategies—a review

Cited by 186 publications

References 264 publications

Arabidopsis bZIP18 and bZIP52 Accumulate in Nuclei Following Heat Stress where They Regulate the Expression of a Similar Set of Genes

Arabidopsis bZIP18 and bZIP52 Accumulate in Nuclei Following Heat Stress where They Regulate the Expression of a Similar Set of Genes

One Heat Shock Transcription Factor Confers High Thermal Tolerance in Clematis Plants

A novel tolerance index to identify heat tolerance in cultivated and wild barley genotypes

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