Exogenous Selenium-Instigated Physiochemical Transformations Impart Terminal Heat Tolerance in Bt Cotton

Saleem, Muhammad Farrukh; Kamal, Muhammad Asif; Shahid, Muhammad Adnan; Saleem, Aisha; Shakeel, Amir; Anjum, Shakeel Ahmad

doi:10.1007/s42729-019-00139-3

Cited by 13 publications

(11 citation statements)

References 46 publications

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“…In this study, we showed that the DS enhanced the APX, SOD, POD and CAT antioxidant enzymes in the strawberry leaves, which was identical with the results of previous studies in other plants. Some studies have shown that inorganic Se relieved oxidative damage in plants through antioxidant enzymes under many stresses, such as salt, drought, heat and cadmium stresses (Sattar et al 2019;Saleem et al 2020;Sharifi et al 2021;Xie et al 2021). For drought Compared with inorganic Se, our findings showed that SeMet had something in common with regulating the APX, SOD and CAT activities in strawberry plants.…”

Section: Discussionmentioning

confidence: 61%

“…During the whole experiment, we used an 0.01 g electronic balance (HZY-B6000 Xinling, China) to weigh and then add water into Sharma 2021; Xie et al 2021). Meanwhile, many studies have shown that Se played an important role in fighting against stresses, including salt, drought, heat and cadmium stresses (Sattar et al 2019;Saleem et al 2020;Sharifi et al 2021;Xie et al 2021). It has been documented that DS induced the overproduction of reactive oxygen species (ROS), which caused peroxidation injuries to the plants (Bashir et al 2021).…”

Section: Methodsmentioning

confidence: 99%

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Effects of selenomethionine on the antioxidative enzymes, water physiology and fruit quality of strawberry plants under drought stress

Wang¹,

Yang²,

Shan³

2022

Hortic. Sci.

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To investigate the role of selenomethionine (SeMet) in regulating the drought tolerance of strawberry plants, we explored the effects of SeMet on the antioxidative enzymes, water physiology and fruit quality of the strawberry plants under drought stress (DS). In this study, we used the strawberry variety ‘Sweet Charlie’ as the material and investigated the effects of SeMet on the drought tolerance of the strawberry plants through foliar spraying and pot experiments. The results showed that the DS obviously enhanced the activities of the antioxidant enzymes (ascorbate peroxidase, superoxide dismutase, peroxidase and catalase) and increased the malondialdehyde (MDA) and hydrogen peroxide (H2O2) contents in the leaves of the strawberry plants, compared with the control. Meanwhile, the DS markedly improved the fruit quality parameters of the soluble solids (SS), soluble sugar, vitamin C (Vc) and sugar-acid ratio. Compared with the DS alone, SeMet obviously enhanced the activities of the above antioxidant enzymes in the leaves and fruit quality parameters of SS, sugar-acid ratio and the soluble sugar and Vc contents, but decreased the MDA and H2O2 levels in the strawberry leaves under the DS. However, the DS markedly decreased the photosynthetic pigment chlorophyll (Chl) and carotenoid (Car) contents, net photosynthetic rate (Pn), transpiration rate (Tr), stomatal conductance (Gs), relative water content (RWC), fruit weight and plant height and biomass. Compared with the DS alone, SeMet significantly increased the Chl and Car contents, Pn, Tr, Gs, RWC, fruit weight and plant height and biomass. Meanwhile, SeMet al.ne decreased the MDA and H2O2 levels and improved the other indicators except for the RWC compared with the control. Our present results concluded that SeMet relieved the adverse impacts of DS on the strawberry growth by enhancing the antioxidant enzymes, photosynthesis and water conditions of the leaves, which promoted the fruit weight and quality. Thus, SeMet can be considered as a regulator to improve the drought tolerance and fruit weight and quality of strawberries.

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Section: Discussionmentioning

confidence: 61%

Section: Methodsmentioning

confidence: 99%

Effects of selenomethionine on the antioxidative enzymes, water physiology and fruit quality of strawberry plants under drought stress

Wang¹,

Yang²,

Shan³

2022

Hortic. Sci.

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“…The antioxidant role of Se in plants has been reported previously (Seppanen et al 2003;Saleem et al 2020). MDA is a key product of membrane lipid peroxidation, reflecting the degree of damage to plant cells (Kapoor and Singh 2017).…”

Section: Effects Of Se Supplementation On Antioxidant Capacity and Gsmentioning

confidence: 93%

Effects of Selenium on Serotonin Synthesis and the Glutathione Redox Cycle in Plum Leaves

Sun

Han

et al. 2020

J Soil Sci Plant Nutr

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Selenium (Se), an essential micronutrient for humans, is also a beneficial nutrient for growth and development of many plants. The aim of the present study was to determine whether low-dose Se application could increase plum growth and serotonin synthesis, as well as upregulate the glutathione redox cycle. Two-year-old plum trees were treated with Se 6+ (Na 2 SeO 4) and Se 2− (SeMet). Growth parameters, levels of serotonin synthesis precursors, compounds and enzymes of the glutathione (GSH) redox cycle, and the antioxidant capacity were analyzed. Results showed that plant height and stem diameter were increased by Se treatment. The leaf Se content was significantly increased; tryptophan was not affected by Se treatment, while the 5hydroxytryptophan content was significantly higher than control. Although serotonin levels were also increased, the effect was not significant, and no tryptamine was detected in our study. On the 30th day, the MDA content in Se 2− was highest followed by the control and Se 6+ treatment, and the activities of T-AOT and CAT were increased, while GST was reduced by Se treatment. The two forms of Se treatments increased the activity of GPX and GR, and the total content of GSH + glutathione disulfide (GSSG) at the end of treatment. Furthermore, the level of GSH and GSH/GSSG was instable changed. GSSG content was similar during the treatment time except on the 20 days. Conclusively, the pathway of plum serotonin was clear, both Se 6+ and Se 2− could influence the serotonin synthesis. Additionally, the GSH redox cycle was sensitive to the Se application. Moreover, Se 6+ performed better than Se 2− on leaf Se content, plant growth parameters, and antioxidant capacity.

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“…Thus, Pn activity and fluorescence were reduced when the temperature was above 35°C due to temperature dependency (Gonias et al 2008). It might be because of the fact that the sensitivity of Pn to high temperature was due to the damage of Photosystem-II (PS-II) components in the chloroplast as well as membrane properties (Du et al 2019;Saleem et al 2020). They further claimed that Pn appeared to be higher because of reduced photorespiration in MCtreated plants.…”

Section: Physiological Aspects Of Mepiquat Chloride Application In Comentioning

confidence: 99%

Morpho-physiological Effects and Molecular Mode of Action of Mepiquat Chloride Application in Cotton: A Review

Tung

Huang

Hafeez

et al. 2020

J Soil Sci Plant Nutr

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Mepiquat chloride (MC) (1,1-dimethylpiperidinum chloride) is a plant growth regulator, usually sprayed on cotton foliage at different growth stages as a practical tool for cotton management. MC foliar applications reduce plant height, leaf area, node distance, and plant canopy but increase light interception within the canopy that leads to increase yields. Application at squaring stage reduces the partitioning of photoassimilates towards main stem, branches, and growing points but increases partitioning to the reproductive organs. Furthermore, MC application increases the net photosynthesis rate in cotton leaves as compared with control and triggers carbohydrate formation by improved source-sink relationship. Disturbed carbohydrate metabolism could affect the activity of sucrose metabolic enzymes resulted in variable yield responses. More precisely, it retards the vegetative growth by inhibiting the activity of gibberellin involved in cell elongation, which inhibits the signaling pathways and disturbs gibberellin homeostasis by upregulation of site-specific genes that ultimately results in keeping the plant stature shorter. Besides this, it enhances the yield due to raised boll setting on the lower branches by manipulating a compact canopy. This review will focus on cotton morphology and yield responses to MC application that have been published in last decades. Various physiological mechanisms such as carbohydrate metabolism and sucrose-related enzymes as well as its molecular mode of action in cotton have also been discussed. Further research is needed to exploit the role of MC specifically in gibberellin inhibition and carbohydrate metabolism with its related enzymes. Keywords Cotton. Mepiquat chloride. Morpho-physiological response. Molecular approach. Yield Abbreviations MC Mepiquat chloride PGRs Plant growth regulators GA Gibberellin Pn Net photosynthesis Rubisco Ribulose 1,5-bisphosphate carboxylase oxygenase SPS Sucrose phosphate synthase SS Sucrose synthase SAI Soluble acid invertase NI Neutral invertase UDPG Uridine diphosphate glucose a.i Active ingredient

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Exogenous Selenium-Instigated Physiochemical Transformations Impart Terminal Heat Tolerance in Bt Cotton

Cited by 13 publications

References 46 publications

Effects of selenomethionine on the antioxidative enzymes, water physiology and fruit quality of strawberry plants under drought stress

Effects of selenomethionine on the antioxidative enzymes, water physiology and fruit quality of strawberry plants under drought stress

Effects of Selenium on Serotonin Synthesis and the Glutathione Redox Cycle in Plum Leaves

Morpho-physiological Effects and Molecular Mode of Action of Mepiquat Chloride Application in Cotton: A Review

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