Epibrassinolide and proline alleviate the photosynthetic and yield inhibition under salt stress by acting on antioxidant system in mustard

Wani, Arif Shafi; Ahmad, Aqil; Hayat, Shamsul; Tahir, Inayatullah

doi:10.1016/j.plaphy.2019.01.002

Cited by 103 publications

(52 citation statements)

References 36 publications

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“…In this study, data showed that seeds exposed to metal stress substantially leads to nearly three fold increase in proline content which was almost conforming to that of La et al (2019). Earlier too, similar observations have been reported (Yadav et al 2011;Wani et al 2019).…”

Section: Protein and Proline Contentsupporting

confidence: 89%

Variations in the antioxidant and free radical scavenging under induced heavy metal stress expressed as proline content in chickpea

Bhagyawant

Narvekar

Gupta

et al. 2019

Physiol Mol Biol Plants

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This study pertains to the effects of heavy metal salts viz., copper (Cu), manganese (Mn), lead (Pb) and zinc (Zn) on the chickpea accession ICC-4812. The salts were given as treatments to the chickpea seeds at various ascending levels of doses till proving toxic. The treatment of 24 h soaked and swollen seeds were then extended to 7 days duration from the date of treatment. Atomic absorption spectrophotometric analysis of bioassay tissue Cicer, showed maximum uptake of 9.41 mg/g and minimum of 1.65 mg/g tissue dry weight for Pb and Zn respectively. The study reveals that enhanced antioxidant responses are associated with substantial proline accumulation indicating induced stress. Ferric reducing antioxidant power assay measuring antioxidant activity was highest in the chickpea seedling treated with Zn, whereas, free radical scavenging activity was highest in the treatments with Mn. The total phenolic and flavonoid contents ranged between 0.24-0.97 and 0.27-1.00 mg/g of dry matter content respectively. Higher Pb and Zn doses seem to elicit higher proline levels therefore, suggesting an extreme condition of induced abiotic stress. Dose dependent protein oxidation coupled with DNA degradation was observed in all treatments, depicting genotoxicity. Unweighted pair-group method arithmetic average analysis presented similarity coefficients between the treatments.

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Section: Protein and Proline Contentsupporting

confidence: 89%

Variations in the antioxidant and free radical scavenging under induced heavy metal stress expressed as proline content in chickpea

Bhagyawant

Narvekar

Gupta

et al. 2019

Physiol Mol Biol Plants

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show abstract

“…Moreover, Cd led to stomatal closure as a result of Cd entry into the guard cells and it reduced the stomata number per unit area (Ismael et al, 2019). Pro application caused an increase in stomatal conductance by maintaining appropriate cellular turgor (Wani et al, 2019). De Freitas et al (2019) found that exogenously Pro elevated K + and Ca + accumulation which likely acted in membrane stability and water content, thus regulated stomatal conductance of sorghum plants under salinity stress.…”

Section: Discussionmentioning

confidence: 99%

Cadmium Toxicity Alleviates by Seed Priming with Proline or Glycine Betaine in Cowpea ( Vigna unguiculata (L.) Walp.)

Sadeghipour

2020

Egypt. J. Agron.

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C ADMIUM (Cd) as a non-essential metal is a soil pollutant that inhibits plant growth and development. Proline (Pro) and Glycine betaine (GB) are two important compatible solutes that accumulate in response to abiotic stresses in different plant species. Here, a pot experiment was carried out to assess the role of exogenously applied Pro and GB in improving Cd toxicity tolerance in cowpea plants. Seeds were soaked in 0, 25 and 50mM Pro or GB, and then were sown in plastic pots that were irrigated with 0 or 100µM cadmium chloride. Results showed that Cd stress markedly decreased shoot length, shoot biomass, leaf area, chlorophyll value, stomatal conductance and relative water content (RWC) but increased root and shoot Cd levels, malondialdehyde (MDA) content and antioxidant enzyme activities such as superoxide dismutase (SOD), catalase (CAT) and ascorbate peroxidase (APX). Nevertheless, seed treatment with Pro or GB reduced Cd toxicity and improved growth attributes via reducing Cd uptake and translocation, increasing the chlorophyll value, stomatal conductance, and RWC as well as more enhancing the activities of antioxidant enzymes and lowering the MDA level. Although both Pro and GB were effective, pre-treatment of seeds with Pro improved Cd stress tolerance better than GB. Thus, seed treatment with Pro (especially 50mM) could be used as an effective method for protecting cowpea plants against Cd toxicity.

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“…It is well accepted that salinity stress markedly inhibits plant growth and adversely affects crop production (Cheeseman, 1988; Munns and Tester, 2008; Deinlein et al, 2014; Niu et al, 2018). In the past decade, plant growth-regulating substances have been widely adapted by research groups to minimize the pernicious effects of salinity stress on crop species, such as silicon (Zhu et al, 2016), melatonin (Arora and Bhatla, 2017; Chen et al, 2018), and epibrassinolide (Wani et al, 2019). Nevertheless, identifying more effective and eco-friendly plant growth-regulating substances is warranted.…”

Section: Discussionmentioning

confidence: 99%

Priming With the Green Leaf Volatile (Z)-3-Hexeny-1-yl Acetate Enhances Salinity Stress Tolerance in Peanut (Arachis hypogaea L.) Seedlings

et al. 2019

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Green leaf volatiles play vital roles in plant biotic stress; however, their functions in plant responses to abiotic stress have not been determined. The aim of this study was to investigate the possible role of (Z)-3-hexeny-1-yl acetate (Z-3-HAC), a kind of green leaf volatile, in alleviating the salinity stress of peanut ( Arachis hypogaea L. ) seedlings and the underlying physiological mechanisms governing this effect. One salt-sensitive and one salt-tolerant peanut genotype were primed with 200 μM Z-3-HAC at the 4-week-old stage before they were exposed to salinity stress. Physiological measurements showed that the primed seedlings possessed higher relative water content, net photosynthetic rate, maximal photochemical efficiency of photosystem II, activities of the antioxidant enzymes, and osmolyte accumulation under salinity conditions. Furthermore, the reactive oxygen species, electrolyte leakage, and malondialdehyde content in the third fully expanded leaves were significantly lower than in nonprimed plants. Additionally, we found that application of Z-3-HAC increased the total length, surface area, and volume of the peanut roots under salinity stress. These results indicated that the green leaf volatile Z-3-HAC protects peanut seedlings against damage from salinity stress through priming for modifications of photosynthetic apparatus, antioxidant systems, osmoregulation, and root morphology.

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Epibrassinolide and proline alleviate the photosynthetic and yield inhibition under salt stress by acting on antioxidant system in mustard

Cited by 103 publications

References 36 publications

Variations in the antioxidant and free radical scavenging under induced heavy metal stress expressed as proline content in chickpea

Variations in the antioxidant and free radical scavenging under induced heavy metal stress expressed as proline content in chickpea

Cadmium Toxicity Alleviates by Seed Priming with Proline or Glycine Betaine in Cowpea ( Vigna unguiculata (L.) Walp.)

Priming With the Green Leaf Volatile (Z)-3-Hexeny-1-yl Acetate Enhances Salinity Stress Tolerance in Peanut (Arachis hypogaea L.) Seedlings

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