Stress memory induced rearrangements of HSP transcription, photosystem II photochemistry and metabolism of tall fescue (Festuca arundinacea Schreb.) in response to high-temperature stress

Hu, Tao; Liu, Shuqian; Amombo, Erick; Fu, Jinmin

doi:10.3389/fpls.2015.00403

Cited by 46 publications

(34 citation statements)

References 57 publications

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“…Furthermore, it was reported that "stress memory" played a role in heat stress response regulation of turfgrass. After pre-acclimation with heat, HSP genes showed higher transcript abundance and photosynthetic efficiency in tall fescue during subsequent stress, implying an improvement in heat tolerance level [143]. 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.…”

Section: Heat Stressmentioning

confidence: 99%

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: 99%

Mechanisms of Environmental Stress Tolerance in Turfgrass

et al. 2020

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“…Exogenous application of JA as well as its enhancement of endogenous levels by the overexpression of JA biosynthetic gene confers thermotolerance in Arabidopsis thaliana . Moreover, biosynthesis of plant metabolites, such as soluble sugars, amino acids, organic acids, and lipids, is also affected by high temperature; nevertheless, they are also crucial for plant adaptation to high‐temperature stress …”

Section: Introductionmentioning

confidence: 99%

“…12 Moreover, biosynthesis of plant metabolites, such as soluble sugars, amino acids, organic acids, and lipids, is also affected by high temperature; nevertheless, they are also crucial for plant adaptation to high-temperature stress. 9,13,14 To monitor heat stress-induced misfolded and damaged proteins, plant cells have evolved an elaborate protein quality control system consisting of molecular chaperones and protein degradation systems. 15,16 Heat-shock proteins (HSPs), the wellknown molecular chaperones, bind to denatured or non-native conformation proteins to prevent them from forming polymers, 17 while the protein degradation systems clear the damaged proteins.…”

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confidence: 99%

Melatonin enhances thermotolerance by promoting cellular protein protection in tomato plants

Cai

Zhang

et al. 2016

Journal of Pineal Research

229

157

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Melatonin is a pleiotropic signaling molecule that provides physiological protection against diverse environmental stresses in plants. Nonetheless, the mechanisms for melatonin-mediated thermotolerance remain largely unknown. Here, we report that endogenous melatonin levels increased with a rise in ambient temperature and that peaked at 40°C. Foliar pretreatment with an optimal dose of melatonin (10 μmol/L) or the overexpression of N-acetylserotonin methyltransferase (ASMT) gene effectively ameliorated heat-induced photoinhibition and electrolyte leakage in tomato plants. Both exogenous melatonin treatment and endogenous melatonin manipulation by overexpression of ASMT decreased the levels of insoluble and ubiquitinated proteins, but enhanced the expression of heat-shock proteins (HSPs) to refold denatured and unfolded proteins under heat stress. Meanwhile, melatonin also induced expression of several ATG genes and formation of autophagosomes to degrade aggregated proteins under the same stress. Proteomic profile analyses revealed that protein aggregates for a large number of biological processes accumulated in wild-type plants. However, exogenous melatonin treatment or overexpression of ASMT reduced the accumulation of aggregated proteins. Aggregation responsive proteins such as HSP70 and Rubisco activase were preferentially accumulated and ubiquitinated in wild-type plants under heat stress, while melatonin mitigated heat stress-induced accumulation and ubiquitination of aggregated proteins. These results suggest that melatonin promotes cellular protein protection through induction of HSPs and autophagy to refold or degrade denatured proteins under heat stress in tomato plants.

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“…The I and P fluorescence intensities on the OJIP induction curve and the F300 parameter also decrease in wheat plants exposed to Pb stress (Kalaji and Loboda, 2007). Interestingly, tall fescue Festuca arundinacea leaves show a great decrease at all steps of OJIP and F300 parameters in response to high-temperature stress, but pre-acclimation treatment inhibit such declines (Hu et al, 2015). Intriguingly, Rapacz et al (2015) suggest that DI 0 /CS 0 values increase with increasing levels of PSII damage, which is the opposite to what we found (Fig.…”

Section: Discussionmentioning

confidence: 99%

Unraveling rice tolerance mechanisms againstSchizotetranychus oryzaemite infestation

Buffon

Blasi

Rativa

et al. 2018

Preprint

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6Infestation of Schizotetranychus oryzae (Acari: Tetranychidae) causes great losses in 3 7 rice productivity. Infestation in Puitá INTA-CL cultivar reduced the number of 3 8 seeds/plant, percentage of full seeds, 1,000 seeds weight, and seed length, whereas 3 9 infestation in IRGA423 increased 1,000 seeds weight and seed length. Reduction in 4 0 seed weight/plant caused by infestation was higher in Puitá INTA-CL than IRGA423. 4 1 Thus, Puitá INTA-CL was established as susceptible, and IRGA423 as tolerant to S. 4 2 oryzae infestation. Photosynthetic parameters were less affected by infestation in 4 3 IRGA423 than in Puitá INTA-CL. Infestation also caused accumulation of H 2 O 2 , 4 4 decreased cell membrane integrity and accelerated senescence in leaves of Puitá INTA-4 5 CL, while leaves of IRGA423 presented higher levels of phenolics compounds. Using 4 6 proteomic analysis, we identified proteins related to plant defense, such as jasmonate 4 7 synthesis, and related to other mechanisms of tolerance such as oxidative stress, 4 8 photosynthesis, and DNA structure maintenance, more abundant in IRGA423 after 4 9 7 1damage caused by arthropod pests can exceed 15% annually (Mitchell et al., 2016). In 7 2 order to quantify the pest resistance of the cultivars, the best tool does not seem to be 7 3 the increase of the arthropod population, but the measurement of the damages caused to 7 4 the plants, since the reduction of the leaf damage is followed by an increase in yield and 7 5 quality of the grain, and these are the ultimate objectives of most crop breeding 7 6 programs (Smith, 2005). Thus, the plant resistance/tolerance to arthropods is the sum of 7 7 genetically inherited traits that result in an adapted species that suffers less damage 7 8 compared to susceptible ones. These resistance/tolerance qualities should be measured 7 9 on a relative scale by comparing levels of damage and productivity with susceptible 8 0

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Stress memory induced rearrangements of HSP transcription, photosystem II photochemistry and metabolism of tall fescue (Festuca arundinacea Schreb.) in response to high-temperature stress

Cited by 46 publications

References 57 publications

Mechanisms of Environmental Stress Tolerance in Turfgrass

Mechanisms of Environmental Stress Tolerance in Turfgrass

Melatonin enhances thermotolerance by promoting cellular protein protection in tomato plants

Unraveling rice tolerance mechanisms againstSchizotetranychus oryzaemite infestation

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