scholarly journals WRKY Transcription Factor Response to High-Temperature Stress

Plants ◽  
2021 ◽  
Vol 10 (10) ◽  
pp. 2211
Author(s):  
Zhuoya Cheng ◽  
Yuting Luan ◽  
Jiasong Meng ◽  
Jing Sun ◽  
Jun Tao ◽  
...  
Keyword(s):  
High Temperature ◽  
Plant Growth ◽  
Signaling Pathways ◽  
Temperature Stress ◽  
Molecular Mechanisms ◽  
Target Genes ◽  
High Temperature Stress ◽  
Research Progress ◽  
Plant Responses ◽  
Gene Promoters

Plant growth and development are closely related to the environment, and high-temperature stress is an important environmental factor that affects these processes. WRKY transcription factors (TFs) play important roles in plant responses to high-temperature stress. WRKY TFs can bind to the W-box cis-acting elements of target gene promoters, thereby regulating the expression of multiple types of target genes and participating in multiple signaling pathways in plants. A number of studies have shown the important biological functions and working mechanisms of WRKY TFs in plant responses to high temperature. However, there are few reviews that summarize the research progress on this topic. To fully understand the role of WRKY TFs in the response to high temperature, this paper reviews the structure and regulatory mechanism of WRKY TFs, as well as the related signaling pathways that regulate plant growth under high-temperature stress, which have been described in recent years, and this paper provides references for the further exploration of the molecular mechanisms underlying plant tolerance to high temperature.

scholarly journals Plant Responses and Tolerance to High Temperature Stress: Role of Exogenous Phytoprotectants

2015 ◽  
pp. 385-435 ◽  
Author(s):  
Kamrun Nahar ◽  
Mirza Hasanuzzaman ◽  
Kamal Uddin Ahamed ◽  
Khalid Rehman Hakeem ◽  
Munir Ozturk ◽  
...  
Keyword(s):  
High Temperature ◽  
Temperature Stress ◽  
High Temperature Stress ◽  
Plant Responses

scholarly journals Physiological and Transcriptomic Analyses Reveal Exogenous Trehalose Is Involved in the Responses of Wheat Roots to High Temperature Stress

Plants ◽  
2021 ◽  
Vol 10 (12) ◽  
pp. 2644
Author(s):  
Yin Luo ◽  
Yanyang Xie ◽  
Weiqiang Li ◽  
Maohuan Wei ◽  
Tian Dai ◽  
...  
Keyword(s):  
Gene Expression ◽  
High Temperature ◽  
Temperature Stress ◽  
Gene Expression Regulation ◽  
High Temperature Stress ◽  
Physiological Data ◽  
Glutathione Metabolism ◽  
Plant Responses ◽  
Wheat Roots ◽  
Wheat Varieties

High temperature stress seriously limits the yield and quality of wheat. Trehalose, a non-reducing disaccharide, has been shown involved in regulating plant responses to a variety of environmental stresses. This study aimed to explore the molecular regulatory network of exogenous trehalose to improve wheat heat tolerance through RNA-sequencing technology and physiological determination. The physiological data and RNA-seq showed that trehalose reduced malondialdehyde content and relative conductivity in wheat roots, and affecting the phenylpropane biosynthesis, starch and sucrose metabolism, glutathione metabolism, and other pathways. Our results showed that exogenous trehalose alleviates the oxidative damage caused by high temperature, coordinating the effect of wheat on heat stress by re-encoding the overall gene expression, but two wheat varieties showed different responses to high temperature stress after trehalose pretreatment. This study preliminarily revealed the effect of trehalose on gene expression regulation of wheat roots under high temperature stress, which provided a reference for the study of trehalose.

scholarly journals A Systematic View Exploring the Role of Chloroplasts in Plant Abiotic Stress Responses

2019 ◽  
Vol 2019 ◽  
pp. 1-14 ◽  
Author(s):  
Yo-Han Yoo ◽  
Woo-Jong Hong ◽  
Ki-Hong Jung
Keyword(s):  
Abiotic Stress ◽  
High Temperature ◽  
Stress Response ◽  
Temperature Stress ◽  
Stress Responses ◽  
Cellular Response ◽  
Molecular Mechanisms ◽  
Close Association ◽  
High Temperature Stress ◽  
Growth And Yield

Chloroplasts are intracellular semiautonomous organelles central to photosynthesis and are essential for plant growth and yield. The significance of the function of chloroplast-related genes in response to climate change has not been well studied in crops. In the present study, the initial focus was on genes that were predicted to be located in the chloroplast genome in rice, a model crop plant, with genes either preferentially expressed in the leaf or ubiquitously expressed in all organs. The characteristics were analyzed by Gene Ontology (GO) enrichment and MapMan functional classification tools. It was then identified that 110 GO terms (45 for leaf expression and 65 for ubiquitous expression) and 1,695 genes mapped to MapMan overviews were strongly associated with chloroplasts. In particular, the MapMan cellular response overview revealed a close association between heat stress response and chloroplast-related genes in rice. Moreover, features of these genes in response to abiotic stress were analyzed using a large-scale publicly available transcript dataset. Consequently, the expression of 215 genes was found to be upregulated in response to high temperature stress. Conversely, genes that responded to other stresses were extremely limited. In other words, chloroplast-related genes were found to affect abiotic stress response mainly through high temperature response, with little effect on response to drought and salinity stress. These results suggest that genes involved in diurnal rhythm in the leaves participate in the reaction to recognize temperature changes in the environment. Furthermore, the predicted protein–protein interaction network analysis associated with high temperature stress is expected to provide a very important basis for the study of molecular mechanisms by which chloroplasts will respond to future climate changes.

scholarly journals Overexpression of OsPT8 Increases Auxin Content and Enhances Tolerance to High-Temperature Stress in Nicotiana tabacum

Genes ◽  
2019 ◽  
Vol 10 (10) ◽  
pp. 809 ◽  
Author(s):  
Song ◽  
Fan ◽  
Jiao ◽  
Liu ◽  
Wang ◽  
...  
Keyword(s):  
High Temperature ◽  
Temperature Stress ◽  
Root Architecture ◽  
Molecular Mechanisms ◽  
Extreme Temperature ◽  
High Temperature Stress ◽  
Wild Plants ◽  
Auxin Signaling ◽  
Plant Tolerance ◽  
Auxin Content

Temperature is a primary factor affecting the rate of plant development; as the climate warms, extreme temperature events are likely to increasingly affect agriculture. Understanding how to improve crop tolerance to heat stress is a key concern. Wild plants have evolved numerous strategies to tolerate environmental conditions, notably the regulation of root architecture by phytohormones, but the molecular mechanisms of stress resistance are unclear. In this study, we showed that high temperatures could significantly reduce tobacco biomass and change its root architecture, probably through changes in auxin content and distribution. Overexpression of the OsPT8 phosphate transporter enhanced tobacco tolerance to high-temperature stress by changing the root architecture and increased the antioxidant ability. Molecular assays suggested that overexpression of OsPT8 in tobacco significantly increased the expression of auxin synthesis genes NtYUCCA 6, 8 and auxin efflux carriers genes NtPIN 1,2 under high-temperature stress. We also found that the expression levels of auxin response factors NtARF1 and NtARF2 were increased in OsPT8 transgenic tobacco under high-temperature stress, suggesting that OsPT8 regulates auxin signaling in response to high-temperature conditions. Our findings provided new insights into the molecular mechanisms of plant stress signaling and showed that OsPT8 plays a key role in regulating plant tolerance to stress conditions.

scholarly journals Regulation of Osmotic Balance and Increased Antioxidant Activities under Heat Stress in Abelmoschus esculentus L. Triggered by Exogenous Proline Application

Agronomy ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 685
Author(s):  
Rashid Hussain ◽  
Choudhary Muhammad Ayyub ◽  
Muhammad Rashid Shaheen ◽  
Sahar Rashid ◽  
Muhammad Nafees ◽  
...  
Keyword(s):  
Heat Stress ◽  
High Temperature ◽  
Water Use Efficiency ◽  
Temperature Stress ◽  
Water Use ◽  
Antioxidant Activities ◽  
High Temperature Stress ◽  
Plant Responses ◽  
Randomized Design ◽  
Use Efficiency

Keeping in view the yield losses instigated by heat stress in several crops, we carried out an experiment to explore the curative effect of exogenous applications of proline on the morpho-physiological, biochemical, and water-related attributes of okra genotypes under high-temperature stress (controlled conditions). Four contrasting genotypes C1, C2, C3, and C4 heat tolerant and heat sensitive genotypes were selected from a diverse panel of okra genotypes (n = 100) to examine plant responses to high-temperature stress and exogenous application of proline. Four-week-old seedlings were subjected to heat stress by gradually increasing the temperature of a growth chamber from 28/22 °C to 45/35 °C (day/night) and sprayed with an optimized proline concentration 2.5 mM. The experiment consisted of a factorial arrangement of treatments in a completely randomized design. The results showed that there were maximum increases in shoot length (32.7%), root length (58.9%), and shoot fresh (85.7%). The quantities of leaves per plant were increased by 52.9%, 123.6%, 82.5%, and 62.2% in C1, C2, C3, and C4 after proline application. On the other hand, only root fresh weight decreased in all genotypes after proline application by 23.1%, 20%, 266.7%, and 280.8% (C1, C2, C3, C4). A lower leaf temperature of 27.72 °C, minimum transpiration of 3.29 mmol m−2 s−1, maximum photosynthesis of 3.91 μmol m−2 s−1, and a maximum water use efficiency of 1.20 μmol CO2 mmol H2O were recorded in the genotypes C2, C1, C3, and C4, respectively. The highest enzymatic activity of superoxide dismutase, peroxidase and catalase were 14.88, 0.31, and 0.15 U mg-protein in C2, C1, and C3, respectively. Maximum leaf proline, glycinebetaine, total free amino acids, and chlorophyll content 3.46 mg g−1, 4.02 mg g−1, 3.46 mg g−1, and 46.89 (in C2), respectively, due to foliar applications of proline. Another important finding was that heat tolerance in okra was highly linked highly linked to genotypes’ genetic potential, having more water use efficiency, enzymatic activities, and physio-biochemical attributes under the foliar applications of proline.

scholarly journals Research Progress on Peony under High Temperature Stress Caused by Climate Warming

2021 ◽  
Vol 252 ◽  
pp. 03056
Author(s):  
Bingxue Zhao ◽  
Qingjun Huang
Keyword(s):  
High Temperature ◽  
Temperature Stress ◽  
Heat Tolerance ◽  
Physiological Mechanism ◽  
High Temperature Stress ◽  
Research Progress ◽  
Germplasm Resources ◽  
Research Status ◽  
Heat Resistant ◽  
Depth Study

Global warming and worsening environmental problems have worsened the heat resistance of peony and difficult maintenance and management. The high temperature stress caused by the environment has become an important environmental factor for the growth and development of peony. The article summarizes the morphology, yield, physiological and biochemical indicators and research status of peony under high temperature stress; summarizes the research status of peony heat tolerance evaluation index screening, germplasm heat tolerance evaluation and heat-resistant peony breeding, in order to promote tolerance Selection and breeding process of hot peony germplasm resources. At present, related researches on peony mainly focus on pharmacological effects and germplasm resources. The physiological mechanism of high temperature and breeding of heat-resistant varieties of peony are relatively lagging behind. In-depth study of the physiological mechanism of high temperature in peony combined with multi-omics will help to adopt technical measures to improve the heat tolerance of high plants and reduce heat damage, so as to speed up the selection and breeding of heat-resistant peony germplasm, and meet the survival and medicine of peony in harsh environments. Use and other needs.

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