Exogenous 24-Epibrassinolide alleviates oxidative damage from copper stress in grape (Vitis vinifera L.) cuttings

Zhou, Yali; Huo, Sufang; Wang, Liting; Meng, Jianwen; Zhang, Zhenwen; Xi, Zhumei

doi:10.1016/j.plaphy.2018.07.029

Cited by 53 publications

(20 citation statements)

References 31 publications

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“…Solanum lycopersicum treated with EBL showed a greater protein content than the control despite the presence Ni stress (Nazir et al 2019). Zhou et al (2018) showed that the content of protein significantly increased after the application of EBL in grape (Vitis vinifera) under Cu stress. Hence, the declining content of protein in algal cells and higher plants treated with Pb can be restored by applying EBL, which increases the chances of plant survival in ecosystems polluted with heavy metals.…”

Section: Discussionmentioning

confidence: 97%

“…The balance of the ascorbate-GSH cycle in grape cuttings was also regulated by increasing the activities of monodehydroascorbate and dehydroascorbate reductase, as well as GR, APX, and the contents of the antioxidant ascorbate and dehydroascorbic acid. However, the contents of GSH and oxidized glutathione decreased (Zhou et al 2018). Furthermore, Kapoor et al (2016) reported that EBL alleviated the harmful impact of Cd in radish seedlings (Raphanus sativus) by enhancing the level of antioxidants, such as ascorbic acid, GSH, and tocopherols.…”

Section: Discussionmentioning

confidence: 99%

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24-Epibrassinolide modulates primary metabolites, antioxidants, and phytochelatins in Acutodesmus obliquus exposed to lead stress

Talarek-Karwel

Bajguz

Piotrowska‐Niczyporuk

2019

J Appl Phycol

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Aquatic organisms are exposed to many stressors, e.g., heavy metals. Brassinosteroids, a plant hormone group, can effectively stimulate plants to defend against the negative impact of a heavy metal. The present study was conducted with an aim to find out the influence of 24-epibrassinolide (EBL) on Acutodesmus obliquus treated with 0.01 and 500 μM of lead (Pb) ions during 7 days of cultivation. Pb has a toxic effect on algal cultures because it limits both the growth and development and induces oxidative stress. Simultaneously, 1 μM EBL was involved in protecting algal cells against the toxic effect of Pb. Despite the presence of Pb, EBL significantly increased the number of algal cells and their metabolite content (e.g., proteins, monosaccharides, chlorophylls, carotenes, and xanthophylls). Cultures treated concurrently with EBL and Pb were characterized by a reduction in their content of endogenous Pb, H 2 O 2 , and malondialdehyde. Also, EBL increased the activity of catalase, ascorbate peroxidase, superoxide dismutase, glutathione reductase, and the content of ascorbate and glutathione. EBL increased the phytochelatin synthase activity, thereby enhancing the production of phytochelatins accountable for both binding and detoxification of Pb. These results indicate the influence of EBL on the inhibitory effect of Pb in A. obliquus. These findings help to clarify the role of BRs in the algal adaptation to the prevailing stressful conditions.

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Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 99%

24-Epibrassinolide modulates primary metabolites, antioxidants, and phytochelatins in Acutodesmus obliquus exposed to lead stress

Talarek-Karwel

Bajguz

Piotrowska‐Niczyporuk

2019

J Appl Phycol

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“…An elevated Cu level in leaves damages thylakoids; dissipates the electron transport in photosystem (PS) II (PSII), alters photophosphorylation and membrane integrity; and eventually decreases photosynthesis and major gas-exchange parameters [ 11 , 12 , 13 ]. Additionally, high concentrations of Cu induce oxidative stress that causes membrane disruption and lipid peroxidation [ 14 , 15 ]. Moreover, excess Cu also alters the process of mineral uptake [ 16 , 17 ] and also retards the seed germination process and overall health of the developing seedling [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

Nitric Oxide Pre-Treatment Advances Seed Germination and Alleviates Copper-Induced Photosynthetic Inhibition in Indian Mustard

Rather

Mir

Masood

et al. 2020

Plants

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This investigation tested the efficiency of nitric oxide (NO) in alleviation of Cu-induced adverse impacts on seed germination and photosynthesis in Indian mustard (Brassica juncea L.). Pre-treatment of B. juncea seeds with sodium nitroprusside (SNP; NO donor) significantly improved the seed germination rate and also alleviated Cu-accrued oxidative stress. However, in the absence of NO, Cu caused a higher reduction in seed germination rate. The presence of NO strengthened the antioxidant defense system (glutathione reductase, ascorbate peroxidase, and superoxide dismutase) and thereby sustained the lower lipid peroxidation, reduced H2O2 content, and thiobarbituric acid reactive substances in Cu-exposed seeds. NO pre-treated seeds also retained a higher amylase activity and exhibited an improved seed germination rate. This effect of NO under Cu stress was also seen in plants originated from the NO pre-treated seeds, where the role of NO pre-treatment was reflected in the improved photosynthetic potential of B. juncea. Overall, NO pre-treatment not only improved the germination rate in seeds but also carried its effects in the grown seedlings evidenced as improved photosynthesis and growth. Potential mechanisms involved in the action of NO pre-treatment included NO-mediated significant strengthening of the antioxidant defense system and decreases in Cu-caused oxidative stress parameters.

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“…Under Cu stress, the concentration of ROS increases in plants [ 1 ]. Recently, excess Cu exposure has been reported to stimulate the production of ROS, such as H 2 O 2 in grapevine roots, potentially increasing oxygen-induced cellular damage [ 7 , 17 ]. The production of H 2 O 2 could then initiate the process of lipid peroxidation, resulting in the generation of MDA.…”

Section: Discussionmentioning

confidence: 99%

“…At an optimal level, Cu is an important micronutrient in regulatory metabolic processes, including photosynthesis and carbohydrate partitioning in plants [ 3 , 4 , 5 ]. However, excess Cu in vineyard soils may result in several phytotoxic effects on grapevines, such as cell membrane damage, nutritional imbalances, leaf chlorosis, growth inhibition, a reduction in chlorophyll content, and even death [ 6 , 7 ]. Consequently, a high concentration of Cu in vineyard soils leads to a decline in grape productivity and economic losses in the grape industry.…”

Section: Introductionmentioning

confidence: 99%

Modeling Alleviative Effects of Ca, Mg, and K on Cu-Induced Oxidative Stress in Grapevine Roots Grown Hydroponically

Juang

Lo²,

Chen

2021

Molecules

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The aim of this study was to determine the pattern of alleviation effects of calcium (Ca), magnesium (Mg), and potassium (K) on copper (Cu)-induced oxidative toxicity in grapevine roots. Root growth, Cu and cation accumulation, reactive oxygen species (ROS) production, and antioxidant activities were examined in grapevine roots grown in nutrient solutions. The experimental setting was divided into three sets; each set contained a check (Hoagland solution only) and four treatments of simultaneous exposure to 15 μM Cu with four cation levels (i.e., Ca set: 0.5, 2.5, 5, and 10 mM Ca; Mg set: 0.2, 2, 4, and 8 mM Mg; K set: 0.6, 2.4, 4.8, and 9.6 mM K). A damage assessment model (DAM)-based approach was then developed to construct the dose-effect relationship between cation levels and the alleviation effects on Cu-induced oxidative stress. Model parameterization was performed by fitting the model to the experimental data using a nonlinear regression estimation. All data were analyzed by a one-way analysis of variance (ANOVA), followed by multiple comparisons using the least significant difference (LSD) test. The results showed that significant inhibitory effects on the elongation of roots occurred in grapevine roots treated with 15 μM Cu. The addition of Ca and Mg significantly mitigated phytotoxicity in root growth, whereas no significant effect of K treatment on root growth was found. With respect to oxidative stress, ROS and malondialdehyde (MDA) contents, as well as antioxidant (superoxide dismutase (SOD), catalase (CAT), and ascorbate peroxidase (APX)) activities, were stimulated in the roots after exposure to 15 μM Cu for three days. Moreover, H2O2 levels decreased significantly as Ca, Mg, and K concentrations increased, indicating that the coexistence of these cations effectively alleviated Cu-induced oxidative stress; however, alleviative effects were not observed in the assessment of the MDA content and antioxidant enzyme activities. Based on the DAM, an exponential decay equation was developed and successfully applied to characterize the alleviative effects of Ca, Mg, and K on the H2O2 content induced by Cu in the roots. In addition, compared with Mg and K, Ca was the most effective cation in the alleviation of Cu-induced ROS. Based on the results, it could be concluded that Cu inhibited root growth and Ca and Mg absorption in grapevines, and stimulated the production of ROS, lipid peroxidation, and antioxidant enzymes. Furthermore, the alleviation effects of cations on Cu-induced ROS were well described by the DAM-based approach developed in the present study.

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Exogenous 24-Epibrassinolide alleviates oxidative damage from copper stress in grape (Vitis vinifera L.) cuttings

Cited by 53 publications

References 31 publications

24-Epibrassinolide modulates primary metabolites, antioxidants, and phytochelatins in Acutodesmus obliquus exposed to lead stress

24-Epibrassinolide modulates primary metabolites, antioxidants, and phytochelatins in Acutodesmus obliquus exposed to lead stress

Nitric Oxide Pre-Treatment Advances Seed Germination and Alleviates Copper-Induced Photosynthetic Inhibition in Indian Mustard

Modeling Alleviative Effects of Ca, Mg, and K on Cu-Induced Oxidative Stress in Grapevine Roots Grown Hydroponically

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