Effect of abscisic acid on the resistance of cucumber seedlings to combined exposure to high temperature and chloride

Таланова, В. В.; Топчиева, Л. В.; Титов, А. Ф.

doi:10.1134/s1062359006060136

Cited by 12 publications

(6 citation statements)

References 14 publications

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“…Previously there have been published results describing studies in which plants subjected to a single stress agent exhibited improved tolerance to the subsequent adverse environmental conditions (cross-adaptation). For example, cross-adaptation has been reported in rice subjected to PEG and LiCl [ 17 ]; cucumber seedlings after combined heat and salinization [ 18 ]; grapes after drought combined with UV-B radiation [ 19 ]. Increased resistance has been observed in drought-stressed pea plants treated with high temperature [ 20 ].…”

Section: Introductionmentioning

confidence: 99%

Assessment of the Biochemical Responses of Wheat Seedlings to Soil Drought after Application of Selective Herbicide

Todorova

Sergiev

Katerova

et al. 2021

Plants

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Drought is a major environmental constrain with a deleterious effect on plant development leading to a considerable reduction of crop productivity worldwide. Wheat is a relatively drought tolerant crop during the vegetative stage. The herbicide Serrate® (Syngenta) is a preparation containing two active chemical substances with different modes of action, which inhibit the biosynthesis of fatty and amino acids. It is commonly used as a systemic and selective chemical agent to control annual grass and broadleaf weeds in cereal crops and particularly in wheat, which is tolerant to Serrate®. Seventeen-day-old wheat seedlings (Triticum aestivum L., cv. Sadovo-1) grown as soil culture under controlled conditions were sprayed with an aqueous solution of Serrate®. Seventy-two hours later the plantlets were subjected to drought stress for seven days to reach a severe water deficit followed by four days of recovery with a normal irrigation regime. Oxidative stress markers, non-enzymatic, and enzymatic antioxidants were analyzed in the leaves of plants from the different treatment groups (herbicide-treated, droughts-stressed, and individuals which were consecutively subjected to both treatments) at 0, 96, and 168 h of drought stress, and after 96 h of recovery. Herbicide treatment did not alter substantially the phenotype and growth parameters of the above-ground plant parts. It provoked a moderate increase in phenolics, thiol-containing compounds, catalase, superoxide dismutase, glutathione reductase, and H2O2. However, significant variations of malondialdehyde, proline, and peroxidase activity caused by the sole application of the herbicide were not detected during the experimental period. Drought and herbicide + drought treatments caused significant growth inhibition, increased oxidative stress markers, and activation of enzymatic and non-enzymatic antioxidant defense reaching the highest levels at 168 h of stress. Plant growth was restored after 96 h of recovery and the levels of the monitored biochemical parameters showed a substantial decline. The herbicide provoked an extra load of oxidative stress-related biochemical components which did not aggravate the phenotypic and growth traits of plants subjected to drought, since they exhibited a good physiological status upon recovery.

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Section: Introductionmentioning

confidence: 99%

Assessment of the Biochemical Responses of Wheat Seedlings to Soil Drought after Application of Selective Herbicide

Todorova

Sergiev

Katerova

et al. 2021

Plants

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“…As a thermophilic crop, the optimum temperature of cucumber growth is 25–30°C. Temperatures above 35°C can often lead to thermal damage to cucumber plants, and cucumber leaves and stems show wilt and dead tissue within a short time at temperatures of 50°C ( Talanova et al, 2006 ). In China, cucumber is cultivated in open fields during the summer growing season, where cucumber plants usually face the combined stress of strong light and heat, or sharp temperature increases in greenhouses.…”

Section: Introductionmentioning

confidence: 99%

Overexpression of CsCaM3 Improves High Temperature Tolerance in Cucumber

Yan

Zhou

et al. 2018

Front. Plant Sci.

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High temperature (HT) stress affects the growth and production of cucumbers, but genetic resources with high heat tolerance are very scarce in this crop. Calmodulin (CaM) has been confirmed to be related to the regulation of HT stress resistance in plants. CsCaM3, a CaM gene, was isolated from cucumber inbred line “02-8.” Its expression was characterized in the present study. CsCaM3 transcripts differed among the organs and tissues of cucumber plants and could be induced by HTs or abscisic acid, but not by salicylic acid. CsCaM3 transcripts exhibited subcellular localization to the cytoplasm and nuclei of cells. Overexpression of CsCaM3 in cucumber plants has the potential to improve their heat tolerance and protect against oxidative damage and photosynthesis system damage by regulating the expression of HT-responsive genes in plants, including chlorophyll catabolism-related genes under HT stress. Taken together, our results provide useful insights into stress tolerance in cucumber.

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“…Cucumber ( Cucumis sativus L.), an important vegetable crop worldwide, is also one of the main vegetable species grown in protected facilities. In many parts of China during the spring-summer and summer-autumn periods, the daytime air temperature in solar greenhouses and plastic greenhouses is often higher than the suitable temperature range for cucumber (25–30 °C) [ 1 ]. High-temperature stress seriously affects the normal growth of cucumber plants and can even lead to decreased yield and quality.…”

Section: Introductionmentioning

confidence: 99%

Identification of microRNAs associated with the exogenous spermidine-mediated improvement of high-temperature tolerance in cucumber seedlings (Cucumis sativus L.)

et al. 2018

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BackgroundHigh-temperature stress inhibited the growth of cucumber seedlings. Foliar spraying of 1.0 mmol·L− 1 exogenous spermidine (Spd) to the sensitive cucumber cultivar ‘Jinchun No. 2’ grown at high-temperature (42 °C/32 °C) in an artificial climate box improved the high-temperature tolerance. Although there have been many reports on the response of microRNAs (miRNAs) to high-temperature stress, the mechanism by which exogenous Spd may mitigate the damage of high-temperature stress through miRNA-mediated regulation has not been studied.ResultsTo elucidate the regulation of miRNAs in response to exogenous Spd-mediated improvement of high-temperature tolerance, four small RNA libraries were constructed from cucumber leaves and sequenced: untreated-control (CW), Spd-treated (CS), high-temperature stress (HW), and Spd-treated and high-temperature stress (HS). As a result, 107 known miRNAs and 79 novel miRNAs were identified. Eight common differentially expressed miRNAs (miR156d-3p, miR170-5p, miR2275-5p, miR394a, miR479b, miR5077, miR5222 and miR6475) were observed in CS/CW, HW/CW, HS/CW and HS/HW comparison pairs, which were the first set of miRNAs that responded to not only high-temperature stress but also exogenous Spd in cucumber seedlings. Five of the eight miRNAs were predicted to target 107 potential genes. Gene function and pathway analyses highlighted the integral role that these miRNAs and target genes probably play in the improvement of the high-temperature tolerance of cucumber seedlings through exogenous Spd application.ConclusionsOur study identified the first set of miRNAs associated with the exogenous Spd-mediated improvement of high-temperature tolerance in cucumber seedlings. The results could help to promote further studies on the complex molecular mechanisms underlying high-temperature tolerance in cucumber and provide a theoretical basis for the high-quality and efficient cultivation of cucumber with high-temperature resistance.Electronic supplementary materialThe online version of this article (10.1186/s12864-018-4678-x) contains supplementary material, which is available to authorized users.

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Effect of abscisic acid on the resistance of cucumber seedlings to combined exposure to high temperature and chloride

Cited by 12 publications

References 14 publications

Assessment of the Biochemical Responses of Wheat Seedlings to Soil Drought after Application of Selective Herbicide

Assessment of the Biochemical Responses of Wheat Seedlings to Soil Drought after Application of Selective Herbicide

Overexpression of CsCaM3 Improves High Temperature Tolerance in Cucumber

Identification of microRNAs associated with the exogenous spermidine-mediated improvement of high-temperature tolerance in cucumber seedlings (Cucumis sativus L.)

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