Exogenous foliar ascorbic acid applications enhance salt-stress tolerance in peanut plants through increase in the activity of major antioxidant enzymes

Alves, Rita de Cássia; Oliveira, Kevein Ruas; Lúcio, José Clebson Barbosa; Silva, Jeferson dos Santos; Carrega, Willians César; Queiroz, Samira Furtado de; Gratão, Priscila Lupino

doi:10.1016/j.sajb.2022.08.007

Cited by 15 publications

(7 citation statements)

References 64 publications

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“…Moreover, the influence of PRC treatments on the accumulation of sugars and ascorbic acid content aligns with the findings of previous studies [ 40 , 41 ]. PRC has been reported to control carbohydrate metabolism and enhance sugar content in fruits [ 40 ].…”

Section: Discussionsupporting

confidence: 90%

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Enhancing productivity, modifying biochemical parameters, and regulating the phenylpropanoid pathway in 'Le-Conte' pears through optimal protocatechuic acid treatments

Khedr,

Khedr

2024

BMC Plant Biol

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Background This study aimed to investigate the impact of protocatechuic acid (PRC) treatments on the productivity and fruit quality of 'Le-Conte' pears, with a specific focus on productivity, stone cells content, and antioxidant activity. The research spanned over three consecutive cultivating seasons, with the first season serving as a preliminary study to determine the optimal PRC concentrations and the most effective number of spray applications. During the initial season, response surface methodology (RSM) was employed to optimize PRC concentration and application frequency. PRC was evaluated at concentrations ranging from 50 to 400 ppm, with treatment frequencies of either once or twice. Considering the optimal conditions obtained from RSM results, PRC treatments at 200 ppm and 300 ppm were applied twice, and their respective effects were studied in comparison to the control in the following seasons. Results RSM results indicated that PRC at 200 and 300 ppm, applied twice, once during full bloom and again three weeks later, yielded the most significant effects. Subsequent studies revealed that PRC treatments had a substantial impact on various aspects of fruit production and quality. Applying 300 ppm PRC once during full bloom and again three weeks later resulted in higher fruit set percentages, lower fruit abscission, and enhanced fruit yield compared to untreated trees. Additionally, the 200 ppm PRC treatment maintained physicochemical characteristics such as fruit color, increased total soluble solids (TSS), and total sugar, and maintained higher ascorbic acid content and antioxidant capacity in the fruits while reducing stone cells content and lignin. Notably, enzyme activities related to phenylpropanoid metabolism and stone cells, including phenylalanine ammonia-lyase (PAL), cinnamate-4-hydroxylase (C4H), 4-Coumarate-CoA Ligase (4CL), cinnamyl alcohol dehydrogenase (CAD), and cinnamoyl-CoA reductase (CCR), as well as peroxidase, polyphenol oxidase, and laccase, were significantly regulated by PRC treatments. Conclusion Overall, this study suggests that PRC treatments are suitable for enhancing pear yield and quality, with PRC at 200 ppm being the more recommended option over 300 ppm. This approach serves as an effective strategy for achieving a balance between enhancing the productivity and fruit quality of 'Le-Conte' pears.

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Section: Discussionsupporting

confidence: 90%

“…PRC has been reported to control carbohydrate metabolism and enhance sugar content in fruits [ 40 ]. Additionally, the antioxidant properties of PRC can protect ascorbic acid from degradation and maintain its content in fruits [ 41 ].…”

Section: Discussionmentioning

confidence: 99%

Enhancing productivity, modifying biochemical parameters, and regulating the phenylpropanoid pathway in 'Le-Conte' pears through optimal protocatechuic acid treatments

Khedr,

Khedr

2024

BMC Plant Biol

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“…When the plants were subjected to low light, there was an increase in CAT, SOD and POX activity. That caused the enzymes to increase their activities in an attempt to prevent the plants from damage caused by oxidative stress, according to what has been reported by Alves et al [30]. Kolahi et al [55] also observed an increase in the activity of the same enzymes (CAT, SOD and POX) when lettuce was subjected to stress.…”

Section: Antioxidant Enzyme Activitiesmentioning

confidence: 60%

“…Various external stresses, such as low light, often induce the activity of free-radical detoxification enzymes in plants, such as SOD, catalase and peroxidase (POX) [26,27]. The SOD enzyme is considered the first line of enzymatic defense against oxidative stress [28], and catalyzes the dismutation of O 2 into H 2 O 2 and molecular oxygen, having a fundamental role in ROS detoxification [29,30]. The CAT enzyme can be considered a good stress indicator, containing high potential to directly demutate H 2 O 2 into H 2 O and O 2 , which are indispensable for ROS detoxification under stress conditions [31].…”

Section: Introductionmentioning

confidence: 99%

Lettuce in Monoculture or in Intercropping with Tomato Changes the Antioxidant Enzyme Activities, Nutrients and Growth of Lettuce

et al. 2023

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Intercropping systems are a widely used agricultural practice by smallholder farmers to enhance food security and to use natural resources more efficiently. The objective of this study was to evaluate two lettuce cvs under an intercropping system. Enzymatic growth, yield and economic benefit were evaluated. The experiment was carried out from August to February in Jaboticabal (Brazil) using tomato plants as a main crop and Lucy Brown and Vanda cvs of lettuce as secondary crops. The catalase, superoxide dismutase and peroxidase activity of lettuce plants was analyzed. Mineral nutrient content, growth, yield parameters and commercial economic benefit were measured. Significant differences in stress and activity enzymatic indicators were found versus cultivars of lettuce. The loss of abiotic factors such as radiation or its effect on enzymatic stress indicators was greater than its effect on yield. Yield loss in the intercropping systems was different for each cultivar system, with cv Lucy Brown showing greater yield loss than cv Vanda. Economic benefit was only found for the Vanda lettuce cv. Although the benefits of intercropping have been demonstrated as very appropriate cultural management, the choice of cultivars involved might be the determining factor for the agronomic success of the system.

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“…Furthermore, to determine the DW, the leaf samples were kept in an oven for 72 h at 65 °C and were measured. In addition, the heights of plants ranging from roots to shoot apex were measured using a measuring tape, following the method described by Es-Sbihi et al 2021 [33]. After determining the above parameters, the relative water content (RWC) of the leaf samples was calculated using the formula (Eq: 1) given by Sarker & Oba 2018 [34].…”

Section: Sampling and Data Collectionmentioning

confidence: 99%

Ascorbic acid mediated Salt Tolerance in Gerbera jamesonii: A Promising Strategy for Sustainable Floriculture

Farooq,

Uzma,

Dayakar

et al. 2023

Preprint

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Cut flowers of Gerbera jamesonii, renowned globally for their vibrant colors and extended shelf life, play a pivotal role in the flourishing floriculture industry. However, repeated fertigation in nethouses/polyhouses poses a significant challenge leading to production losses. In response to this challenge, we hypothesized that the application of Ascorbic acid (AsA), an antioxidant, in optimal concentrations could alleviate the detrimental effects of salt toxicity and enhance Gerbera production. Our objective was to investigate the impact of exogenous AsA (1.0 mM, 2.0 mM, and 4.0 mM) as a foliar spray, followed by NaCl (200 mM) treatment, across two cultivars of Gerbera: white-flowered (salt sensitive) and yellow flowered (salt tolerant) cultivars. The research employed a comprehensive approach, applying AsA and NaCl treatment to evaluate their effects on chlorophyll, proline, and total soluble protein content, MDA, H2O2, and antioxidant enzyme activities (SOD, CAT, APX, GR, and POD). Following exposure to 2.0 mM AsA, treated plants displayed a notable increase in chlorophyll, Proline, and soluble protein content. Concurrently, MDA and H2O2 levels, indicator of intracellular damage, exhibited a decrement, suggesting AsA's protective role against salt stress. Moreover, enhanced antioxidant Enzyme activities were observed. The application of AsA (2.0 mM) not only induced salt tolerance in Gerbera but also showed potential benefits for its overall growth and development. This study underscores the promising role of AsA in mitigating salt-induced challenges in Gerbera cultivation.

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Exogenous foliar ascorbic acid applications enhance salt-stress tolerance in peanut plants through increase in the activity of major antioxidant enzymes

Cited by 15 publications

References 64 publications

Enhancing productivity, modifying biochemical parameters, and regulating the phenylpropanoid pathway in 'Le-Conte' pears through optimal protocatechuic acid treatments

Enhancing productivity, modifying biochemical parameters, and regulating the phenylpropanoid pathway in 'Le-Conte' pears through optimal protocatechuic acid treatments

Lettuce in Monoculture or in Intercropping with Tomato Changes the Antioxidant Enzyme Activities, Nutrients and Growth of Lettuce

Ascorbic acid mediated Salt Tolerance in Gerbera jamesonii: A Promising Strategy for Sustainable Floriculture

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