Acquired thermotolerance in plants

Song, Lili; Jiang, Yulong; Zhao, Haiqing; Hou, Meifang

doi:10.1007/s11240-012-0198-6

Cited by 64 publications

(45 citation statements)

References 85 publications

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“…Thermotolerance is the capacity of organisms to cope with excessively high temperatures and consists of basal and acquired thermotolerance (Song et al, 2012). Basal thermotolerance refers to the inherent capacity of an organism to survive exposure to temperatures above those optimal for growth, and acquired thermotolerance is induced by a short acclimation period at moderately high (but survivable) temperatures or by treatment with some other nonlethal stress prior to heat stress (Larkindale et al, 2005;Liu et al, 2015).…”

Section: Discussion the Oshtas Gene Functions In Leaf Blade To Modulamentioning

confidence: 99%

The RING Finger Ubiquitin E3 Ligase OsHTAS Enhances Heat Tolerance by Promoting H2O2-Induced Stomatal Closure in Rice

et al. 2015

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Heat stress often results in the generation of reactive oxygen species, such as hydrogen peroxide, which plays a vital role as a secondary messenger in the process of abscisic acid (ABA)-mediated stomatal closure. Here, we characterized the rice (Oryza sativa) HEAT TOLERANCE AT SEEDLING STAGE (OsHTAS) gene, which plays a positive role in heat tolerance at the seedling stage. OsHTAS encodes a ubiquitin ligase localized to the nucleus and cytoplasm. OsHTAS expression was detected in all tissues surveyed and peaked in leaf blade, in which the expression was concentrated in mesophyll cells. OsHTAS was responsive to multiple stresses and was strongly induced by exogenous ABA. In yeast two-hybrid assays, OsHTAS interacted with components of the ubiquitin/26S proteasome system and an isoform of rice ascorbate peroxidase. OsHTAS modulated hydrogen peroxide accumulation in shoots, altered the stomatal aperture status of rice leaves, and promoted ABA biosynthesis. The results suggested that the RING finger ubiquitin E3 ligase OsHTAS functions in leaf blade to enhance heat tolerance through modulation of hydrogen peroxide-induced stomatal closure and is involved in both ABA-dependent and DROUGHT AND SALT TOLERANCE-mediated pathways.

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Section: Discussion the Oshtas Gene Functions In Leaf Blade To Modulamentioning

confidence: 99%

The RING Finger Ubiquitin E3 Ligase OsHTAS Enhances Heat Tolerance by Promoting H2O2-Induced Stomatal Closure in Rice

et al. 2015

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“…In Arabidopsis, this can be shown by exposure to pretreatment at 37°C for 1 h followed by recovery at 23°C for 2 h, which allows the plants to survive otherwise lethal heat shock at 44°C for 40 min. It is generally accepted that the accumulation of HSPs induced by the preacclimation contributes to the ability to cope with subsequent lethal heat shock stress (Song et al, 2012). The findings that hit5 can tolerate 44°C for 40 min without 1 h of pre-acclimation at 37°C, and that hit5 accumulates higher levels of HSP101 New Phytologist (2017)…”

Section: Researchmentioning

confidence: 99%

The Arabidopsis heat‐intolerant 5 (hit5)/enhanced response to aba 1 (era1) mutant reveals the crucial role of protein farnesylation in plant responses to heat stress

Wang

Lin

et al. 2016

New Phytologist

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Protein farnesylation is a post-translational modification known to regulate abscisic acid (ABA)-mediated drought tolerance in plants. However, it is unclear whether and to what extent protein farnesylation affects plant tolerance to high-temperature conditions. The Arabidopsis heat-intolerant 5 (hit5) mutant was isolated because it was thermosensitive to prolonged heat incubation at 37°C for 4 d but thermotolerant to sudden heat shock at 44°C for 40 min. Map-based cloning revealed that HIT5 encodes the β-subunit of the protein farnesyltransferase. hit5 was crossed with the aba-insensitive 3 (abi3) mutant, the aba-deficient 3 (aba3) mutant, and the heat shock protein 101 (hsp101) mutant, to characterize the HIT5-mediated heat stress response. hit5/abi3 and hit5/aba3 double mutants had the same temperature-dependent phenotypes as hit5. Additionally, exogenous supplementation of neither ABA nor the ABA synthesis inhibitor fluridone altered the temperature-dependent phenotypes of hit5. The hit5/hsp101 double mutant was still sensitive to prolonged heat incubation, yet its ability to tolerate sudden heat shock was lost. The results suggest that protein farnesylation either positively or negatively affects the ability of plants to survive heat stress, depending on the intensity and duration of high-temperature exposure, in an ABA-independent manner. HSP101 is involved in the hit5-derived heat shock tolerance phenotype.

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“…HSFs also go through post-translational regulation included ubiquitination, phosphorylation, oligomerization, Small Ubiquitin-like MOdifier (SUMO)-mediated degradation, and interaction with other non-HSF proteins [196,197]. Mitogen-activated protein kinase MAPK6 targets the AtHSFA2, phosphorylates it on T249 and alters its intracellular localization under HS in Arabidopsis [198].…”

Section: Heat Stress Proteins (Hsps) and Heat Shock Factors (Hsfs)mentioning

confidence: 99%

Unraveling Field Crops Sensitivity to Heat Stress: Mechanisms, Approaches, and Future Prospects

Nadeem

Wang

et al. 2018

Agronomy

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The astonishing increase in temperature presents an alarming threat to crop production worldwide. As evident by huge yield decline in various crops, the escalating drastic impacts of heat stress (HS) are putting global food production as well as nutritional security at high risk. HS is a major abiotic stress that influences plant morphology, physiology, reproduction, and productivity worldwide. The physiological and molecular responses to HS are dynamic research areas, and molecular techniques are being adopted for producing heat tolerant crop plants. In this article, we reviewed recent findings, impacts, adoption, and tolerance at the cellular, organellar, and whole plant level and reported several approaches that are used to improve HS tolerance in crop plants. Omics approaches unravel various mechanisms underlying thermotolerance, which is imperative to understand the processes of molecular responses toward HS. Our review about physiological and molecular mechanisms may enlighten ways to develop thermo-tolerant cultivars and to produce crop plants that are agriculturally important in adverse climatic conditions. 128 2 of 34 and osmotic adjustment and re-establish the redox balance of cell and homeostasis by modify the antioxidant system [10,11]. A plant in defense from HS causes modifications at the molecular level in the expression of genes [12]. In HS conditions, change in biochemical and physiological activities by gene expression alter gradually, resulting in the development of thermotolerance [13]. In order to successfully produce HS-tolerant crop varieties in the light of global climate change, there is need of knowledge and investigations about HS-tolerance mechanisms at physiological, biochemical, and molecular levels.At present, investigations into selection strategy and breeding for thermotolerant cultivars and understanding of heat tolerance mechanisms are more required today than ever before. Molecular and genetic mechanisms for avoiding HS-induced harmful changes play a crucial role in plant survival under such circumstances. In the present scenario of global warming, the major challenge for plant scientists is to develop new crop varieties tolerant to HS [14]. In the coming years, agricultural production will have to deal with growing crops under sub-optimal conditions accompanied by increased food demand, creating a gap between the current yield achievements and yield potential [15]. Developing genetically modified plants through target genes manipulation, QTLs, and omics techniques are widely studied molecular approaches in recent years. Our study about sensitivity, adaptations, mechanisms, and approaches may uncover ways to develop thermo-tolerant cultivars and to produce crop plants that are agriculturally important in adverse climatic conditions. Plant Sensitivity to Heat StressPlant sensitivity to HS varies with duration, plant type, and the degree of temperature. Plant growth and development are greatly influenced by the series of morphological, physiological, and biochemical changes resul...

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Acquired thermotolerance in plants

Cited by 64 publications

References 85 publications

The RING Finger Ubiquitin E3 Ligase OsHTAS Enhances Heat Tolerance by Promoting H2O2-Induced Stomatal Closure in Rice

The RING Finger Ubiquitin E3 Ligase OsHTAS Enhances Heat Tolerance by Promoting H2O2-Induced Stomatal Closure in Rice

The Arabidopsis heat‐intolerant 5 (hit5)/enhanced response to aba 1 (era1) mutant reveals the crucial role of protein farnesylation in plant responses to heat stress

Unraveling Field Crops Sensitivity to Heat Stress: Mechanisms, Approaches, and Future Prospects

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