Ascorbic Acid Alleviates Damage from Heat Stress in the Photosystem II of Tall Fescue in Both the Photochemical and Thermal Phases

Chen, Ke; Zhang, Minna; Zhu, Huihui; Huang, Mei‐Yu; Zhu, Qing; Tang, Diyong; Han, Xiaojiao; Li, Jinlin; Sun, Jutang; Fu, Jinmin

doi:10.3389/fpls.2017.01373

Cited by 22 publications

(18 citation statements)

References 43 publications

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“…Analysis of fluorescence parameters suggested exogenous ALA had protective effects on thylakoid membranes and PSII. Similar protective effects on PSII by exogenous application of other low‐molecular‐weight compounds, such as ascorbic acids and spermidine, were previously reported on tall fescue exposed to heat stress (Chen et al., 2017; Zhang et al., 2017).…”

Section: Discussionsupporting

confidence: 79%

The use of 5‐aminolevulinic acid to reduce heat‐stress‐related damages in tall fescue

2020

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Heat stress is a major abiotic stress that damages cool‐season turfgrasses, such as tall fescue (Festuca arundinacea Schreb.), during summer months. Heat stress results in oxidative damage, reductions in photosynthesis, and ultimately can cause plant death. Exogenous applications of 5‐aminolevulinic acid (ALA) have previously been demonstrated to improve abiotic stress tolerance in a number of crops by improving chlorophyll levels and reducing oxidative damage, two major indicators of heat stress in plants. Experiments were conducted in growth chamber conditions to determine the effect of ALA application on heat stress in tall fescue plants and to confirm if ALA could alleviate damage related to inhibited photosynthesis or oxidative damages associated with high temperature. A rate of 100 mg L−1 ALA was determined to be effective in eliciting positive tall fescue responses during heat stress with plants maintaining better visual characteristics. Plants treated with ALA had greater levels of chlorophyll as well as photosynthetic performance under heat stress than plants that were not treated with ALA. Additionally, ALA plants had reduced oxidative damage associated with greater antioxidant activities of the enzymes catalase (CAT), ascorbate peroxidase (APX), and glutathione reductase (GR). The use of ALA was demonstrated to be effective in reducing heat stress related damages in tall fescue.

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Section: Discussionsupporting

confidence: 79%

The use of 5‐aminolevulinic acid to reduce heat‐stress‐related damages in tall fescue

2020

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“…Cd toxicity negatively affects photosynthesis by reducing chlorophyll content, which adversely influences general plant growth and development by disrupting vital metabolic processes (Kim et al, 2008;Hong et al, 2013;Jan et al, 2015;Khan et al, 2015;Jung et al, 2016Jung et al, , 2017Jung et al, , 2018bFarooq et al, 2018). Recently, some studies have demonstrated that the exogenous application of sulfur (Khan et al, 2015;Jung et al, 2017;Tian et al, 2017), glutathione (Chen et al, 2010;Mostofa et al, 2014;Kim et al, 2017;Jung et al, 2019) or ascorbate (Chen et al, 2017;Jung et al, 2018a;Semida et al, 2018;Zhang et al, 2019) may alleviate different heavy metal stresses.…”

Section: Discussionmentioning

confidence: 99%

“…Akram et al (2017) comprehensively and systematically demonstrated that AsA plays a very important role in reducing oxidative stress by reviewing the previous reported studies that examined the effect of AsA application on numerous plants subjected to various environmental abiotic stressors including high and low temperature, drought, and salinity. Despite the fact that AsA is used in many different fields to mitigate oxidative stress induced by various environmental stressors (Akram et al, 2017;Chen et al, 2017), there are only a few studies reported on the interaction between Cd toxicity and AsA (Chao et al, 2010;Semida et al, 2018). Chao et al (2010) reported that hydroponic treatment with AsA reduces malondialdehyde (MDA) production and increases chlorophyll content, thereby contributing to reversing the effects of Cd toxicity in rice.…”

Section: Introductionmentioning

confidence: 99%

Ascorbate-Mediated Modulation of Cadmium Stress Responses: Reactive Oxygen Species and Redox Status in Brassica napus

et al. 2020

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The role of ascorbate (AsA) in antioxidant defense system-associated resistance to cadmium (Cd) in oilseed rape plants has not yet been clearly demonstrated. The present study investigated the critical role of exogenous AsA on the physiological and biochemical responses of reactive oxygen species (ROS) and antioxidant scavenging defense systems in oilseed rape (Brassica napus L. cv. Tammi) seedlings exposed to Cd. Cd (10 μM) treatment led to significant reductions in plant growth; increases in the levels of superoxide anion radical, hydrogen peroxide, and malondialdehyde; and increases in Cd uptake and accumulation by the roots and shoots in hydroponically grown 10-day-old seedlings. Moreover, it reduced AsA content and AsA redox ratios, which have been correlated with reductions in glutathione (GSH) and/or nicotinamide adenine dinucleotide phosphate (NADPH) redox status. However, exogenously applying AsA to Cd-exposed seedlings decreased Cd-induced ROS, improved antioxidant defense systems by increasing AsA, GSH, and NADPH contents, and increased Cd uptake and accumulation in both roots and shoots of the plants. These results provided evidence that the enhancement in AsA redox status can be linked to an increase in the GSH and/or NADPH redox ratios through the induction of the AsA–GSH–NADPH cycle. Thus, these results suggest that exogenous AsA application to oilseed rape seedlings under Cd stress might alleviate the overall Cd toxicity by regulating the homeostasis of the AsA–GSH–NADPH cycle, which reestablishes the steady-state cellular redox status.

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“…Arabidopsis studies revealed that an increased Asc content can limit the deleterious effects of high lightand high temperature-induced oxidative stress [137]. AsA alleviates heat stress-induced damage in tall fescue [138] and strawberry [139]. The inducible expression and activity of APX isoforms differed in sand pear cultivars exposed to heat stress, reflecting their tolerant and sensitive attributes [140].…”

Section: The Involvement Of Asc In Response To Abiotic Stressmentioning

confidence: 99%

Ascorbic Acid—The Little-Known Antioxidant in Woody Plants

et al. 2019

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Reactive oxygen species (ROS) are constantly produced by metabolically active plant cells. The concentration of ROS may determine their role, e.g., they may participate in signal transduction or cause oxidative damage to various cellular components. To ensure cellular homeostasis and minimize the negative effects of excess ROS, plant cells have evolved a complex antioxidant system, which includes ascorbic acid (AsA). AsA is a multifunctional metabolite with strong reducing properties that allows the neutralization of ROS and the reduction of molecules oxidized by ROS in cooperation with glutathione in the Foyer-Halliwell-Asada cycle. Antioxidant enzymes involved in AsA oxidation and reduction switches evolved uniquely in plants. Most experiments concerning the role of AsA have been performed on herbaceous plants. In addition to extending our understanding of this role in additional taxa, fundamental knowledge of the complex life cycle stages of woody plants, including their development and response to environmental factors, will enhance their breeding and amend their protection. Thus, the role of AsA in woody plants compared to that in nonwoody plants is the focus of this paper. The role of AsA in woody plants has been studied for nearly 20 years. Studies have demonstrated that AsA is important for the growth and development of woody plants. Substantial changes in AsA levels, as well as reduction and oxidation switches, have been reported in various physiological processes and transitions described mainly in leaves, fruits, buds, and seeds. Evidently, AsA exhibits a dual role in the photoprotection of the photosynthetic apparatus in woody plants, which are the most important scavengers of ozone. AsA is associated with proper seed production and, thus, woody plant reproduction. Similarly, an important function of AsA is described under drought, salinity, temperature, light stress, and biotic stress. This report emphasizes the involvement of AsA in the ecological advantages, such as nutrition recycling due to leaf senescence, of trees and shrubs compared to nonwoody plants.

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Ascorbic Acid Alleviates Damage from Heat Stress in the Photosystem II of Tall Fescue in Both the Photochemical and Thermal Phases

Cited by 22 publications

References 43 publications

The use of 5‐aminolevulinic acid to reduce heat‐stress‐related damages in tall fescue

The use of 5‐aminolevulinic acid to reduce heat‐stress‐related damages in tall fescue

Ascorbate-Mediated Modulation of Cadmium Stress Responses: Reactive Oxygen Species and Redox Status in Brassica napus

Ascorbic Acid—The Little-Known Antioxidant in Woody Plants

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