Molecular and biochemical responses of horticultural plants and crops to heat stress

Shafiei-Masouleh, Seyedeh-Somayyeh; Sassine, Y.N.

doi:10.1590/2447-536x.v26i2.2134

Cited by 16 publications

(7 citation statements)

References 37 publications

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“…The use of growth regulators is beneficial to the in vitro plant growth and development (Ayub et al 2019;Mitrofanova et al 2019;Silva et al, 2019), but it may lead to negative changes in cytogenetic stability (Samarfard et al, 2014, Masouleh;Sassine, 2020). Flow cytometry analyses quantify the DNA content and estimate the ploidy level, since the size of the genome is highly correlated with the number of chromosomes.…”

Section: Cytogenetic Stabilitymentioning

confidence: 99%

Temperature and GA3 on ROS and cytogenetic stability during in vitro cultivation of strelitzia zygotic embryos

et al. 2021

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Tropical species may require higher temperatures as well as higher growth regulator concentrations for in vitro development. Since these conditions may affect plant metabolism, the objective of this study was to identify how different temperatures and gibberellin concentrations may affect the in vitro development of strelitzia embryos, analyzing the effect on ROS and cytogenetic stability. Zygotic embryos were cultivated on MS medium supplemented with 5, 10 and 20 µM GA3 under temperatures of 25 °C, 30/25 °C and 30 °C. After 60 days, higher embryonic germination rate (72%) and shoot length of plantlets (3.14 cm) were observed on medium containing 20 µM gibberellic acid (GA3). At this concentration, there was an increase in nitrate reductase activity with no change in the cytogenetic stability. The temperature influenced only shoot and root lengths, which were highest at 25 °C. At 30 °C, superoxide dismutase (SOD) and ascorbate peroxidase (APX) activities increased compared with those at 25 °C. Thus, the addition of 20 µM GA3 to the culture medium and a temperature of 25 °C in the growth room should be used for zygotic embryo culture of strelitzia.

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Section: Cytogenetic Stabilitymentioning

confidence: 99%

Temperature and GA3 on ROS and cytogenetic stability during in vitro cultivation of strelitzia zygotic embryos

et al. 2021

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“…According to the Intergovernmental Panel on Climate Change (IPCC), the average global temperature may rise by 1.8-4 • C by the end of the twenty-first century and another 1.1-6.4 • C in the following century [3]. High-temperature stress is one of the most severe environmental stresses for crops, as it limits plant growth, development, and productivity in a number of ways [4,5]. High-temperature stress during a crop's reproductive period has a presumably negative impact on its productivity [6].…”

Section: Introductionmentioning

confidence: 99%

Exogenously-Sourced Ethylene Positively Modulates Photosynthesis, Carbohydrate Metabolism, and Antioxidant Defense to Enhance Heat Tolerance in Rice

Gautam

Fatma

Sehar

et al. 2022

IJMS

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The effect of exogenously-applied ethylene sourced from ethephon (2-chloroethyl phosphonic acid)was studied on photosynthesis, carbohydrate metabolism, and high-temperature stress tolerance in Taipei-309 and Rasi cultivars of rice (Oryza sativa L.). Heat stress increased the content of H2O2 and thiobarbituric acid reactive substances (TBARS)more in Rasi than Taipei-309. Further, a significant decline in sucrose, starch, and carbohydrate metabolism enzyme activity and photosynthesis was also observed in response to heat stress. The application of ethephon reduced H2O2 and TBARS content by enhancing the enzymatic antioxidant defense system and improved carbohydrate metabolism, photosynthesis, and growth more conspicuously in Taipei-309 under heat stress. The ethephon application enhanced photosynthesis by up-regulating the psbA and psbB genes of photosystem II in heat-stressed plants. Interestingly, foliar application of ethephoneffectively down-regulated high-temperature-stress-induced elevated ethylene biosynthesis gene expression. Overall, ethephon application optimized ethylene levels under high-temperature stress to regulate the antioxidant enzymatic system and carbohydrate metabolism, reducing the adverse effects on photosynthesis. These findings suggest that ethylene regulates photosynthesis via carbohydrate metabolism and the antioxidant system, thereby influencing high-temperature stress tolerance in rice.

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“…Most metabolomic studies focusing on plant abiotic stress have followed a balanced one-way design as only one stress variable has been assessed in each study [28][29][30][31]. In the one-way designs, the stress variable has been evaluated at two (control vs. stress) or more (control and various levels of the stress factor) levels.…”

Section: Design Of Experimentsmentioning

confidence: 99%

“…Heat is an important abiotic stress continuously affecting crops in many countries, as worldwide temperatures are increasing. Heat stress in plants causes the overproduction of phenolic metabolites, phenylpropanoids and flavonoids [28]. In tomato (Solanum lycopersicum L.) leaves, both the suppression and overexpression of the heat stress factor B1 (HsfB1) enhanced the plant thermotolerance by different means.…”

Section: Temperature Stressmentioning

confidence: 99%

Metabolomics, a Powerful Tool for Understanding Plant Abiotic Stress

et al. 2021

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Metabolomics is a technology that generates large amounts of data and contributes to obtaining wide and integral explanations of the biochemical state of a living organism. Plants are continuously affected by abiotic stresses such as water scarcity, high temperatures and high salinity, and metabolomics has the potential for elucidating the response-to-stress mechanisms and develop resistance strategies in affected cultivars. This review describes the characteristics of each of the stages of metabolomic studies in plants and the role of metabolomics in the characterization of the response of various plant species to abiotic stresses.

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Molecular and biochemical responses of horticultural plants and crops to heat stress

Cited by 16 publications

References 37 publications

Temperature and GA3 on ROS and cytogenetic stability during in vitro cultivation of strelitzia zygotic embryos

Temperature and GA3 on ROS and cytogenetic stability during in vitro cultivation of strelitzia zygotic embryos

Exogenously-Sourced Ethylene Positively Modulates Photosynthesis, Carbohydrate Metabolism, and Antioxidant Defense to Enhance Heat Tolerance in Rice

Metabolomics, a Powerful Tool for Understanding Plant Abiotic Stress

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