Oxidative damage and antioxidant mechanism in tomatoes responding to drought and heat stress

Zhou, Rong; Kong, Lingpeng; Yu, Xiaqing; Ottosen, Carl‐Otto; Zhao, Tongmin; Jiang, Fangling; Wu, Zhiyong

doi:10.1007/s11738-019-2805-1

Cited by 72 publications

(41 citation statements)

References 38 publications

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“…On the other hand, we found that combined stress provoked specific miRNAs response with 74 and 37 showing up/down regulation in comparison with drought and heat. Together with our previous results [10,11], the combined of drought and heat induced unique response in the aspect of physiology, ROS and miRNAs in tomatoes.…”

Section: Expression Pattern Of Mirnas In Tomato Leaf Responding To Insupporting

confidence: 87%

“…Understanding the underlying mechanisms of abiotic stress response is important for the breeding of tolerant crop cultivars [15]. Tomato developed dynamic and various responses at the physiological, metabolic and biochemical levels when drought and heat cohappened [10,11]. Recent studies has widely reported the expression patterns of miRNAs in tomato responding to abiotic stress like high temperature [6] and biotic stress such as Phytophthora infestans [16] and Botrytis cinerea [17].…”

Section: Discussionmentioning

confidence: 99%

“…Tomato, as a model crop to investigate physiological and molecular response for scientific research, is sensitive to both drought and heat [10,11], leading to a limitation on its growth and yield in semi-arid/arid region accompanied by heat waves. Compared with physiological and biochemical response, the research on genetic response in tomato to combined drought and heat is limited.…”

Section: Introductionmentioning

confidence: 99%

“…Compared with physiological and biochemical response, the research on genetic response in tomato to combined drought and heat is limited. For instance, simultaneous application of heat and drought caused both shared and unique response in tomato in the aspect of gas exchange, chlorophyll fluorescence, carbohydrate and reactive oxygen species (ROS) [10,11]. Transcriptome analysis of Arabidopsis at combined drought and heat stress showed a unique pattern of defense response [12].…”

Section: Introductionmentioning

confidence: 99%

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Unique miRNAs and their targets in tomato leaf responding to combined drought and heat stress

Zhou

Ottosen

et al. 2020

BMC Plant Biol

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Background: Both drought and heat stress are serious global problems, leading to agricultural production loss. MicroRNAs (miRNAs) play important roles in plant species responding to individual drought and heat stress. However, the miRNAs and mRNAs in association with combined drought and heat in crops like tomato remains unclear. Results:We studied the crosstalk of miRNAs and their target genes in tomato plants grown under simultaneous drought and heat stress that frequently happen in field conditions. In total, 335 known miRNAs representing 55 miRNA families and 430 potential novel miRNAs were identified in Solanum lycopersicum L. using small RNA deep sequencing. Through expression analysis, miRNAs in association with drought, heat and the combination of these were investigated. In total, 61, 74 and 37 miRNAs were differentially regulated for combination (of both stresses) vs control, combination vs drought and combination vs heat, respectively. Target genes with different expression levels were found using degradome sequencing, which were mainly involved in transcription factor activity, sequencespecific DNA binding, transcription, regulation of transcription, nucleus, DNA binding etc. The quantitative real-time polymerase chain reaction (qRT-PCR) results confirmed the accuracy of sequencing.Conclusions: Our study serves as valuable knowledge on how crop adapted to combined drought and heat stress by regulating miRNAs and mRNAs, which provide information for crop improvement to deal with future climate changes.

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Section: Expression Pattern Of Mirnas In Tomato Leaf Responding To Insupporting

confidence: 87%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Unique miRNAs and their targets in tomato leaf responding to combined drought and heat stress

Zhou

Ottosen

et al. 2020

BMC Plant Biol

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“…These antioxidants have good antioxidant capacity and can effectively scavenge free radicals in organisms to improve oxidative stress. The antioxidant mechanism can be summarized as follows: 1) scavenging free radicals and blocking free radical chain transfer; 2) inhibiting the generation of free radicals; 3) promoting the formation of nonenzymatic antioxidants in vivo; 4) activating the enzyme antioxidant system in vivo. Inhibiting or delaying the oxidation of molecules can be achieved by antioxidants, whose main role is to help the body protect itself from ROS damage.…”

Section: Antioxidation In Chronic Wound Healingmentioning

confidence: 99%

Advances and Impact of Antioxidant Hydrogel in Chronic Wound Healing

Han

et al. 2020

Adv Healthcare Materials

401

267

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The accelerating and thorough treatment of chronic wounds still represents a major unmet medical need owing to the complex symptoms resulting from metabolic disorder of the wound microenvironment. Although numerous strategies and bioactive hydrogels are developed, an effective and widely used method of chronic wound treatment remains a bottleneck. With the aim to accelerate chronic wound healing, many hydrogel dressings with antioxidant functions have emerged and are proven to accelerate wound healing, especially for chronic wound repair. The new strategy in chronic wound treatment brought by antioxidant hydrogels is of great significance to human health. Here, the application of antioxidant hydrogels in the repair of chronic wounds is discussed systematically, aiming to provide an important theoretical reference for the further breakthrough of chronic wound healing.

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