Transcriptomic profiling of tall fescue in response to heat stress and improved thermotolerance by melatonin and 24-epibrassinolide

Alam, M. S.; Zhang, Lihua; Yang, Li; Islam, M. R.; Liu, Yang; Luo, Hong; Yang, Pingfang; Wang, Qingfeng; Chan, Zhulong

doi:10.1186/s12864-018-4588-y

Cited by 93 publications

(63 citation statements)

References 73 publications

(72 reference statements)

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“…MicroRNAs (miRNAs) are essential in transcriptional regulation, so investigation of the alteration of miRNAs under stress conditions is rather important to understand the response mechanisms of plants. Recently, some differentially expressed miRNAs and their target genes which were related to heat stress responses of tall fescue were identified [144,145]. These results provided essential information for further research.…”

Section: Heat Stressmentioning

confidence: 91%

Mechanisms of Environmental Stress Tolerance in Turfgrass

et al. 2020

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Turfgrasses constitute a vital part of the landscape ecological systems for sports fields, golf courses, home lawns and parks. However, turfgrass species are affected by numerous abiotic stresses include salinity, heat, cold, drought, waterlogging and heavy metals and biotic stresses such as diseases and pests. Harsh environmental conditions may result in growth inhibition, damage in cell structure and metabolic dysfunction. Hence, to survive the capricious environment, turfgrass species have evolved various adaptive strategies. For example, they can expel phytotoxic matters; increase activities of stress response related enzymes and regulate expression of the genes. Simultaneously, some phytohormones and signal molecules can be exploited to improve the stress tolerance in turfgrass. Generally, the mechanisms of the adaptive strategies are integrated but not necessarily the same. Recently, metabolomic, proteomic and transcriptomic analyses have revealed plenty of stress response related metabolites, proteins and genes in turfgrass. Therefore, the regulation mechanism of turfgrass’s response to abiotic and biotic stresses was further understood. However, the specific or broad-spectrum related genes that may improve stress tolerance remain to be further identified. Understanding stress response in turfgrass species will contribute to improve stress tolerance of turfgrass.

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Section: Heat Stressmentioning

confidence: 91%

Mechanisms of Environmental Stress Tolerance in Turfgrass

et al. 2020

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“…It is a well‐known ROS (reactive oxygen species)/RNS (reactive nitrogen species) scavenger in nearly all the tissues of the plants . Recently, melatonin was recognized as a bioactive chemical message to regulate the development and stress responses in plants …”

Section: Introductionmentioning

confidence: 99%

“…[4][5][6] Recently, melatonin was recognized as a bioactive chemical message to regulate the development and stress responses in plants. [7][8][9] The classic synthetic pathway of melatonin in plants is similar with that in animals except for the first two steps, that is, tryptophan is decarboxylated to tryptamine by tryptophan decarboxylase (TDC), then the tryptamine is hydroxylated via tryptamine 5-hydroxylase (T5H) to form serotonin. Serotonin is catalyzed by serotonin N-acetyltransferase (SNAT) to form N-acetylserotonin, which is finally methoxylated by N-acetylserotonin-O-methyltransferase (ASMT) to form melatonin.…”

Section: Introductionmentioning

confidence: 99%

Apple tree flowering is mediated by low level of melatonin under the regulation of seasonal light signal

Zhang

Wang

Kai-quan

et al. 2019

Journal of Pineal Research

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Melatonin regulates the seasonal reproduction in photoperiodic sensitive animals. Its function in plants reproduction has not been extensively studied. In the current study, the effects of melatonin on the apple tree flowering have been systematically investigated. For consecutive 2‐year monitoring, it was found that the flowering was always associated with the drop of melatonin level in apple tree. Melatonin application before flowering postponed apple tree flowering with a dose‐dependent manner. The increased melatonin levels at a suitable range also resulted in more flowering. The data indicated that similar to the animals, the melatonin also serves as the signal of the environmental light to regulate the plant reproduction. It was mainly the blue and far‐red light to regulate the gene expression of melatonin synthetic enzymes and melatonin production in plants. The seasonal alterations of the blue and far‐red lights coordinated well with the changes of the melatonin levels and led to decreased melatonin level before flowering. The mechanism studies showed that melatonin per se inhibits all the four flowering pathways in apple. The results not only provide the basic knowledge for melatonin research, but also uncover melatonin as a chemical message of light signal to mediate plant reproduction. This information can be potentially used to control flowering period and prolong the harvest time, helpfully to open a new avenue for increasing crop yield by melatonin application.

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“…Melatonin is closely associated with ROS production and stress-related cell signaling, thus chloroplasts are presumed to be the major site of melatonin production [5]. Melatonin has higher antioxidant capacity than other non-enzymatic antioxidants, such as ascorbates and tocopherols, which may be related to the ability of melatonin to be efficiently transported through different cell compartments [5,11].Numerous reports have indicated the beneficial ability of melatonin application to alleviate heavy metal stress [12], UV stress [13], salinity stress [14-16], drought stress, and high/low temperature stress [17,18] in various plant species. Recent studies suggest that exogenous application of melatonin in plants under salt stress leads to an increase in endogenous melatonin levels, partly via the phyto-melatonin receptor CAND2/PMTR1.…”

mentioning

confidence: 99%

“…Numerous reports have indicated the beneficial ability of melatonin application to alleviate heavy metal stress [12], UV stress [13], salinity stress [14-16], drought stress, and high/low temperature stress [17,18] in various plant species. Recent studies suggest that exogenous application of melatonin in plants under salt stress leads to an increase in endogenous melatonin levels, partly via the phyto-melatonin receptor CAND2/PMTR1.…”

mentioning

confidence: 99%

Melatonin Positively Influences the Photosynthetic Machinery and Antioxidant System of Avena sativa during Salinity Stress

Varghese

Alyammahi

Nasreddine

et al. 2019

Plants

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Recent studies have demonstrated melatonin protects various crops against abiotic stresses. However, the effects of melatonin on the photosynthetic apparatus of stressed plants is poorly characterized. We investigated the effects of melatonin pretreatment on photosynthesis and tolerance to salinity stress in Avena sativa (oat) plants. Oat plants were exposed to four treatments (three replicate pots per treatment): well-watered (WW; control); watered with 300 mM salt solution for 10 days (NaCl); pretreated with 100 µM melatonin solution for 7 days then watered normally for 10 days (Mel+W); or pretreated with 100 µM melatonin for 7 days then 300 mM salt for 10 days (Mel+NaCl). Considerable differences in growth parameters, chlorophyll content, stomatal conductance, proline accumulation, lipid peroxidation, electrolyte leakage, and growth parameters were observed between groups. Genes encoding three major antioxidant enzymes were upregulated in the Mel+NaCl group compared to the other groups. Chlorophyll-a fluorescence kinetic analyses revealed that almost all photosynthetic parameters were improved in Mel+NaCl plants compared to the other treatments. Analysis of genes encoding the major extrinsic proteins of photosystem II (PSII) revealed that PsbA, PsbB, PsbC, and PsbD (but not PsbO) were highly upregulated in Mel+NaCl plants compared to the other groups, indicating melatonin positively influenced photosynthesis under control conditions and salt stress. In addition, melatonin upregulated stress-responsive NAC transcription factor genes in plants exposed to salt stress. These findings suggest melatonin pretreatment improves photosynthesis and enhances salt tolerance in oat plants.

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Transcriptomic profiling of tall fescue in response to heat stress and improved thermotolerance by melatonin and 24-epibrassinolide

Cited by 93 publications

References 73 publications

Mechanisms of Environmental Stress Tolerance in Turfgrass

Mechanisms of Environmental Stress Tolerance in Turfgrass

Apple tree flowering is mediated by low level of melatonin under the regulation of seasonal light signal

Melatonin Positively Influences the Photosynthetic Machinery and Antioxidant System of Avena sativa during Salinity Stress

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