scholarly journals Salvia miltiorrhiza Derived Carbon Dots and Their Heat Stress Tolerance of Italian Lettuce by Promoting Growth and Enhancing Antioxidant Enzyme Activity

ACS Omega ◽  
2021 ◽  
Author(s):  
Hui Wang ◽  
Yunyan Kang ◽  
Hui Li ◽  
Sirui Huang ◽  
Wei Li ◽  
...  
Keyword(s):  
Enzyme Activity ◽  
Heat Stress ◽  
Stress Tolerance ◽  
Antioxidant Enzyme ◽  
Carbon Dots ◽  
Salvia Miltiorrhiza ◽  
Antioxidant Enzyme Activity ◽  
Heat Stress Tolerance

Heat stress and antioxidant enzyme activity in bubaline (Bubalus bubalis) oocytes during in vitro maturation

2016 ◽  
Vol 60 (9) ◽  
pp. 1357-1366 ◽  
Author(s):  
Syma Ashraf Waiz ◽  
Mohammad Raies-ul-Haq ◽  
Suman Dhanda ◽  
Anil Kumar ◽  
T. Sridhar Goud ◽  
...  
Keyword(s):  
Enzyme Activity ◽  
Heat Stress ◽  
Antioxidant Enzyme ◽  
In Vitro Maturation ◽  
Bubalus Bubalis ◽  
Antioxidant Enzyme Activity

Thiol supplementation in aged animals alters antioxidant enzyme activity after heat stress

2005 ◽  
Vol 99 (6) ◽  
pp. 2271-2277 ◽  
Author(s):  
Joanna P. Morrison ◽  
Mitchell C. Coleman ◽  
Elizabeth S. Aunan ◽  
Susan A. Walsh ◽  
Douglas R. Spitz ◽  
...  
Keyword(s):  
Enzyme Activity ◽  
Heat Stress ◽  
Antioxidant Enzyme ◽  
Antioxidant Enzyme Activity

Linking oxidative and salinity stress tolerance in barley: can root antioxidant enzyme activity be used as a measure of stress tolerance?

2012 ◽  
Vol 365 (1-2) ◽  
pp. 141-155 ◽  
Author(s):  
Jelena Dragišić Maksimović ◽  
Jingyi Zhang ◽  
Fanrong Zeng ◽  
Branka D. Živanović ◽  
Lana Shabala ◽  
...  
Keyword(s):  
Enzyme Activity ◽  
Stress Tolerance ◽  
Antioxidant Enzyme ◽  
Salinity Stress ◽  
Antioxidant Enzyme Activity ◽  
Salinity Stress Tolerance

Cellular antioxidant enzyme activity and biomarkers for oxidative stress are affected by heat stress

2019 ◽  
Vol 63 (12) ◽  
pp. 1569-1584 ◽  
Author(s):  
Walid S. Habashy ◽  
Marie C. Milfort ◽  
Romdhane Rekaya ◽  
Samuel E. Aggrey
Keyword(s):  
Oxidative Stress ◽  
Enzyme Activity ◽  
Heat Stress ◽  
Antioxidant Enzyme ◽  
Antioxidant Enzyme Activity ◽  
Biomarkers For Oxidative Stress

Exogenous p-hydroxybenzoic acid regulates antioxidant enzyme activity and mitigates heat stress of cucumber leaves

2012 ◽  
Vol 148 ◽  
pp. 235-245 ◽  
Author(s):  
Jing Zhang ◽  
Dong-Mei Li ◽  
Wei-Juan Sun ◽  
Xiu-Juan Wang ◽  
Ji-Gang Bai
Keyword(s):  
Enzyme Activity ◽  
Heat Stress ◽  
Antioxidant Enzyme ◽  
Antioxidant Enzyme Activity ◽  
Hydroxybenzoic Acid

scholarly journals Antioxidant enzyme activity in germination of Dalbergia spruceana seeds under different temperatures

2021 ◽  
Vol 43 ◽  
Author(s):  
Clenes Cunha Lima ◽  
Ely Simone Cajueiro Gurgel ◽  
Eduardo Euclydes de Lima e Borges
Keyword(s):  
Enzyme Activity ◽  
Heat Stress ◽  
Antioxidant Enzyme ◽  
Germination Percentage ◽  
Antioxidant Enzyme Activity ◽  
Percentage Germination ◽  
Germination Process ◽  
Germination Speed ◽  
Different Temperatures ◽  
Effects Of Temperature

Abstract: Antioxidant enzyme activity can be used to measure heat stress and predict the tolerance of a species to heat stress. This study investigated the effects of temperature on germination and antioxidant enzyme activity in Dalbergia spruceana Benth. seeds. Seeds were incubated at constant temperatures of 20, 25, 30, 35, and 40 °C for ten days; and germination percentage, germination speed index, antioxidant enzyme activity, and electrical conductivity were evaluated. Temperature affected the seed germination process but not antioxidant enzyme activity. Germination percentage and germination speed index were higher at 25 and 35 °C and lower at 20 and 40 °C. Superoxide dismutase activity was not affected by temperature. Catalase and peroxidase activities were too low to be used as indicators of temperature stress. The pattern of increasing electrolyte leakage manifested a trend toward loss of cell membrane semipermeability at higher temperatures.

scholarly journals Improvement in Heat Tolerance of Creeping Bentgrass with Melatonin, Rutin, and Silicon

2019 ◽  
Vol 144 (2) ◽  
pp. 141-148 ◽  
Author(s):  
Emily B. Merewitz ◽  
Sha Liu
Keyword(s):  
Lipid Peroxidation ◽  
Enzyme Activity ◽  
Heat Stress ◽  
Fatty Acid ◽  
Linoleic Acid ◽  
Antioxidant Enzyme ◽  
Heat Tolerance ◽  
Acid Content ◽  
Creeping Bentgrass ◽  
Antioxidant Enzyme Activity

Naturally derived products that may enhance the functionality of fertilizers or other agricultural inputs are needed to reduce inputs associated with stress damage and increase the sustainability of turfgrass management. Damage to high-value creeping bentgrass (Agrostis stolonifera) turf areas caused by heat stress is a widespread problem. This study aimed to evaluate multiple, diverse treatments that may illicit antioxidant responses in plants, melatonin, rutin, and Si, when applied as foliar pretreatments to heat stress. Creeping bentgrass plants were grown in growth chambers at optimal (23 °C) or heat stress conditions (35 °C). Turfgrass quality, chlorophyll content, leaf electrolyte leakage, photochemical efficiency, lipid peroxidation, antioxidant enzyme activity, and fatty acid content were measured to determine the effects of foliar treatments on heat stress responses. Melatonin, Si, and rutin were all found to improve some or all of the physiological parameters measured in the study, but only melatonin and Si reduced lipid peroxidation, increased antioxidant enzyme activity, and altered fatty acid contents. Melatonin- and Si-treated plants had greater superoxide dismutase and peroxidase activity and increased the content of the unsaturated fatty acid, linoleic acid, in creeping bentgrass leaves during heat stress compared with controls. Rutin improved turf quality and reduced electrolyte leakage during heat stress, but the mechanism associated with these changes is unclear because no changes were found in antioxidant enzyme activities or fatty acids. Melatonin and Si treatment promoted antioxidant enzyme activity and linoleic acid content of leaves, which have been associated with the improved heat tolerance of creeping bentgrass plants.

Increase in antioxidant enzyme activity, stress tolerance and biocontrol efficacy of Pichia kudriavzevii with the transition from a yeast-like to biofilm morphology

2015 ◽  
Vol 90 ◽  
pp. 113-119 ◽  
Author(s):  
Mengshan Chi ◽  
Guangkun Li ◽  
Yongsheng Liu ◽  
Guoqing Liu ◽  
Miao Li ◽  
...  
Keyword(s):  
Enzyme Activity ◽  
Stress Tolerance ◽  
Antioxidant Enzyme ◽  
Antioxidant Enzyme Activity ◽  
Pichia Kudriavzevii ◽  
Biocontrol Efficacy

scholarly journals Understanding the Role of Gibberellic Acid and Paclobutrazol in Terminal Heat Stress Tolerance in Wheat

2021 ◽  
Vol 12 ◽  
Author(s):  
Shivani Nagar ◽  
V. P. Singh ◽  
Ajay Arora ◽  
Rajkumar Dhakar ◽  
Neera Singh ◽  
...  
Keyword(s):  
Gene Expression ◽  
Lipid Peroxidation ◽  
Enzyme Activity ◽  
Abiotic Stress ◽  
Gibberellic Acid ◽  
Stress Tolerance ◽  
Antioxidant Enzyme ◽  
Abiotic Stress Tolerance ◽  
Antioxidant Enzyme Activity

Understanding the physiological mechanism of tolerance under stress conditions is an imperative aspect of the crop improvement programme. The role of plant hormones is well-established in abiotic stress tolerance. However, the information on the role of gibberellic acid (GA) in abiotic stress tolerance in late sown wheat is still not thoroughly explored. Thus, we aimed to investigate the role of endogenous GA3 level in stress tolerance in contrasting wheat cultivars, viz., temperature-tolerant (HD 2643 and DBW 14) and susceptible (HD 2189 and HD 2833) cultivars under timely and late sown conditions. We created the variation in endogenous GA3 level by exogenous spray of GA3 and its biosynthesis inhibitor paclobutrazol (PBZ). Tolerant genotypes had higher antioxidant enzyme activity, membrane stability, and photosynthesis rate, lower lipid peroxidase activity, and better growth and yield traits under late sown conditions attributed to H2O2 content. Application of PBZ escalated antioxidant enzymes activity and photosynthesis rate, and reduced the lipid peroxidation and ion leakage in stress, leading to improved thermotolerance. GA3 had a non-significant effect on antioxidant enzyme activity, lipid peroxidation, and membrane stability. However, GA3 application increased the test weight in HD 2643 and HD 2833 under timely and late sown conditions. GA3 upregulated GA biosynthesis and degradation pathway genes, and PBZ downregulated kaurene oxidase and GA2ox gene expression. GA3 also upregulated the expression of the cell expansins gene under both timely and late sown conditions. Exogenous GA3 did not increase thermotolerance but positively affected test weight and cell expansins gene expression. No direct relationship existed between endogenous GA3 content and stress tolerance traits, indicating that PBZ could have conferred thermotolerance through an alternative mechanism instead of inhibiting GA3biosynthesis.

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