Oxidative Stress and Antioxidants in Cowpea Plants Subjected to Boron and High Irradiance Stresses

Michael, Prabhu Inbaraj; Muthuchelian, K.

doi:10.1080/01904167.2012.724498

Cited by 8 publications

(3 citation statements)

References 54 publications

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“…Moreover, B supplementation is a well-established remedy to recover nutrient balance, while improving salt tolerance of nitrogen-fixing leguminous plants [ 212 ]. It also promotes the resistance of crop plants against drought stress by improving photosynthetic efficiency, hormone synthesis, sugar transport, lipid metabolism, flower retention, pollen formation, seed germination and seed yield [ 191 ].…”

Section: Nutrient Management Approaches To Alleviate the Abiotic Stre...mentioning

confidence: 99%

Plant Nutrition: An Effective Way to Alleviate Abiotic Stress in Agricultural Crops

Kumari

Banerjee

Verma

et al. 2022

IJMS

133

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By the year 2050, the world’s population is predicted to have grown to around 9–10 billion people. The food demand in many countries continues to increase with population growth. Various abiotic stresses such as temperature, soil salinity and moisture all have an impact on plant growth and development at all levels of plant growth, including the overall plant, tissue cell, and even sub-cellular level. These abiotic stresses directly harm plants by causing protein denaturation and aggregation as well as increased fluidity of membrane lipids. In addition to direct effects, indirect damage also includes protein synthesis inhibition, protein breakdown, and membranous loss in chloroplasts and mitochondria. Abiotic stress during the reproductive stage results in flower drop, pollen sterility, pollen tube deformation, ovule abortion, and reduced yield. Plant nutrition is one of the most effective ways of reducing abiotic stress in agricultural crops. In this paper, we have discussed the effectiveness of different nutrients for alleviating abiotic stress. The roles of primary nutrients (nitrogen, phosphorous and potassium), secondary nutrients (calcium, magnesium and sulphur), micronutrients (zinc, boron, iron and copper), and beneficial nutrients (cobalt, selenium and silicon) in alleviating abiotic stress in crop plants are discussed.

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Section: Nutrient Management Approaches To Alleviate the Abiotic Stre...mentioning

confidence: 99%

Plant Nutrition: An Effective Way to Alleviate Abiotic Stress in Agricultural Crops

Kumari

Banerjee

Verma

et al. 2022

IJMS

133

View full text Add to dashboard Cite

show abstract

“…Excess ROS can oxidize and damage various cell components, such as pigments, proteins, and lipids, as well as DNA and RNA [53]. High irradiance is also a stress known to cause oxidative damage [54,55]. Associated with stomatal closure induced by water deficit, the increase in ROS generation and the harmful potential of oxidative stress are even more intensified.…”

Section: Discussionmentioning

confidence: 99%

Potassium Phosphite Induces Tolerance to Water Deficit Combined with High Irradiance in Soybean Plants

et al. 2023

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Changes in plant metabolism due to water deficit combined with other stresses, such as high irradiance and high temperatures, cause damage to the physiology and development of crops, which can lead to significant yield losses. The aim of this study was to determine the potential of potassium phosphite (PP) to induce tolerance to water deficit combined with high irradiance in soybean plants. The experiment was carried out in an acclimatized growth chamber. Soybean plants, upon reaching the R1 developmental stage, received the following treatments: PP application (0 L ha−1–control; 0.6 L ha−1 PP; and 1.2 L ha−1 PP), two levels of PAR irradiance (650 µmol m−2 s−1–control; and 1500 µmol m−2 s−1–high irradiance (HI)), and three water availability levels (90% of field capacity (FC), and water deficit at 40% FC and 50% FC). The treatments were maintained for 12 days. The PP increased the photosynthetic rate of plants submitted to a dosage of 1.2 L ha−1 and stresses of 50% FC + HI. PP also decreased the intensity of lipid peroxidation, and rate of electrolyte leakage, which suggests stability of cell membranes. These responses may have occurred due to the activation of the antioxidant enzymes superoxide dismutase and peroxidase. Furthermore, the application of PP increased the proline concentrations, suggesting osmotic adjustment in response to stress. These results provide the first record of PP-induced tolerance in plants under combined water and HI stresses. PP proves to be a potential alternative method to reduce the harmful effects caused by the combined stresses of water deficit and high irradiance in soybean.

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“…The structural stability and osmotic adjustment of proline during stress had been an important indicator of oxidative damage in plants (Michael and Krishnaswamy 2012). Miranda et al (2014) previously reported proline accumulations in response to various stresses in leaf in many studies.…”

Section: Discussionmentioning

confidence: 99%

Antioxidant enzymes and non-enzymatic antioxidants as defense mechanism of salinity stress in cowpea (Vigna unguiculata L. Walp)—Ife brown and Ife bpc

Ologundudu

2021

Bull Natl Res Cent

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Background Several mechanisms had been exhibited by plants to mitigate deleterious effects of salinity stress. A screen house experiment was conducted to investigate the effects of salinity stress on the activities of osmolytes (antioxidative and non-antioxidative enzymes) in the leaves of two cowpea (Vigna unguiculata L. Walp)—Ife brown and Ife bpc, with the aim of better understanding the biochemical mechanisms of salt tolerance. Salts of sodium chloride (NaCl) and sodium sulfate (Na2SO4) at 5, 10 and 15 dS/m concentrations were used for this study. The saline solution was prepared following standard methods. Proline, lipid peroxidase (LP), superoxide dismutase (SOD) and glutathione (GSH) were determined following standard protocols. Results Results showed that minimum proline content (12.07 mg/g) and maximum proline determination (16.05 mg/g) were observed in Ife bpc at 5 and at 15 dS/m under NaCl and Na2SO4 treatments. The LP content significantly increased in Ife brown at 15 dS/m under NaCl treatment and at 10 dS/m (9.49 mg/g) under Na2SO4 salinity. Minimum GSH content (120 µm/g) and maximum glutathione accumulation (138.97 µm/g) were observed in Ife bpc in the stressed cowpea seedlings (5 and 10 dS/m) under NaCl treatment with respect to the control. Also, SOD activities in the leaves of Ife brown increase with increase in salinity stress in both NaCl and Na2SO4 treatments. Conclusions This study concludes that the accumulation of enzymatic and non-enzymatic antioxidants is capable of detoxifying and scavenging reactive oxygen species, thereby mitigating salinity-induced oxidative damage.

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Oxidative Stress and Antioxidants in Cowpea Plants Subjected to Boron and High Irradiance Stresses

Cited by 8 publications

References 54 publications

Plant Nutrition: An Effective Way to Alleviate Abiotic Stress in Agricultural Crops

Plant Nutrition: An Effective Way to Alleviate Abiotic Stress in Agricultural Crops

Potassium Phosphite Induces Tolerance to Water Deficit Combined with High Irradiance in Soybean Plants

Antioxidant enzymes and non-enzymatic antioxidants as defense mechanism of salinity stress in cowpea (Vigna unguiculata L. Walp)—Ife brown and Ife bpc

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