Foliage applied proline induces salt tolerance in chili genotypes by regulating photosynthetic attributes, ionic homeostasis, and antioxidant defense mechanisms

Butt, Madiha; Sattar, Abdul; Abbas, Tasawer; Sher, Ahmad; Ijaz, Muhammad; Ul‐Allah, Sami; Shaheen, Muhammad Rashid; Kaleem, Fawad

doi:10.1007/s13580-020-00236-8

Cited by 6 publications

(3 citation statements)

References 38 publications

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“…It is estimated that salinity disrupts 19.5% of irrigated land and 2.1% dry land agriculture globally. In arid and semi-arid regions, salinity affects 25% irrigated lands [ 3 ], whereas in Pakistan, approximately 6.3 Mha of land is salt affected [ 4 , 5 ]. One of the current challenges throughout the world is to promote food production for meeting increasing food demands.…”

Section: Introductionmentioning

confidence: 99%

Morpho-physiological and biochemical attributes of Chili (Capsicum annum L.) genotypes grown under varying salinity levels

et al. 2021

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Climate change is causing soil salinization, resulting in huge crop losses throughout the world. Multiple physiological and biochemical pathways determine the ability of plants to tolerate salt stress. Chili (Capsicum annum L.) is a salt-susceptible crop; therefore, its growth and yield is negatively impacted by salinity. Irreversible damage at cell level and photo inhibition due to high production of reactive oxygen species (ROS) and less CO2 availability caused by water stress is directly linked with salinity. A pot experiment was conducted to determine the impact of five NaCl salinity levels, i.e., 0,1.5, 3.0, 5.0 and 7.0 dS m-1 on growth, biochemical attributes and yield of two chili genotypes (‘Plahi’ and ‘A-120’). Salinity stress significantly reduced fresh and dry weight, relative water contents, water use efficiency, leaf osmotic potential, glycine betaine (GB) contents, photosynthetic rate (A), transpiration rate (E), stomatal conductance (Ci), and chlorophyll contents of tested genotypes. Salinity stress significantly enhanced malondialdehyde (MDA) contents and activities of the enzymatic antioxidants such as superoxide dismutase (SOD), catalase (CAT) and peroxidase (POD). In addition, increasing salinity levels significantly reduced the tissue phosphorus and potassium concentrations, while enhanced the tissue sodium and chloride concentrations. Genotype ‘Plahi’ had better growth and biochemical attributes compared to ‘A-120’. Therefore, ‘Plahi’ is recommended for saline areas to improve chili production.

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Section: Introductionmentioning

confidence: 99%

Morpho-physiological and biochemical attributes of Chili (Capsicum annum L.) genotypes grown under varying salinity levels

et al. 2021

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“…Proline has been involved in the maintenance of cell turgor, the stabilization of the membranes, and by scavenging the ROS, and preserving redox balance (Ashraf and Foolad, 2007;Hayat et al, 2012;Tesfaye et al, 2014;Li et al, 2014;Meena et al, 2019). The exogenous supply of proline increased gas exchange, water use efficiency and the antioxidant activities in response to salt stress (Butt et al, 2020). Likewise, exogenous proline increased the concentrations of photosynthetic pigments, ascorbic acid, mineral nutrients, activity of antioxidant enzymes, and endogenous proline in bean under salt stress (Abdelhamid et al, 2013).…”

Section: Discussionmentioning

confidence: 99%

“…Consequently, the ability of proline to mitigate salt stress injuries appear to be linked to the N assimilation activities (Teh et al, 2016). In addition, exogenous proline increased gas exchange parameters, water use efficiency and antioxidant mechanisms under salt stress (Butt et al, 2020). In bean, exogenous proline mitigated the oxidative stress induced under salinity by increasing the concentrations of endogenous proline, photosynthetic pigments, ascorbic acid, mineral nutrients, and enhancing the activity of antioxidant enzymes (Abdelhamid et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Mitigation of salt stress damages in Carica papaya L. seedlings through exogenous pretreatments of gibberellic acid and proline

Álvarez-Méndez

Urbano-Gálvez

Mahouachi

2022

Chil. j. agric. res.

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Salinity is a serious threat for global agriculture, especially in arid and semi-arid regions where its incidence leads to considerable damages in the crop growth and production. Carica papaya L. is currently one of the most cultivated fruit crops in the tropical and subtropical areas, and generally, papaya cultivars exhibit a moderate sensitivity to salinity, although such responses may depend on the genotypes. In the present study, papaya seedlings were subjected to salt stress (100 mM NaCl) for 41 d and to exogenous gibberellic acid (GA3; 0.1 mM) and proline (10 mM) pretreatments to evaluate plant physiological variables linked to stress responses. Analysis of the data (P < 0.05) showed a general decrease of plant growth parameters induced by solely salt stress compared to control, such as stem height (47%) and thickness (33%) and plant fresh and dry mass (84% and 83%, respectively), as well as a reduction in the stomatal opening (93%), chlorophylls (40%) and carotenoids (71%) concentration. By contrast, a significant increase was found in foliar and radicular proline levels under stress (87% and 47%). Exogenous foliar GA3 or proline respectively induced a better performance of plants under salt stress by increasing stomatal conductance (444% or 350%), stem height (142% or 144%) and plant biomass (49% or 41%) regarding solely stressed plants, and leading to pigments concentrations close to those from control plants. The results suggest that exogenous gibberellic acid and proline as growth regulator and osmo-regulator solute, respectively could increase papaya seedlings adaption against salt stress.

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Perforated modified atmosphere packaging differentially affects the fruit quality attributes and targeted major metabolites in bell pepper cultivars stored at ambient temperature

Lwin

Lee

2022

Scientia Horticulturae

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Foliage applied proline induces salt tolerance in chili genotypes by regulating photosynthetic attributes, ionic homeostasis, and antioxidant defense mechanisms

Cited by 6 publications

References 38 publications

Morpho-physiological and biochemical attributes of Chili (Capsicum annum L.) genotypes grown under varying salinity levels

Morpho-physiological and biochemical attributes of Chili (Capsicum annum L.) genotypes grown under varying salinity levels

Mitigation of salt stress damages in Carica papaya L. seedlings through exogenous pretreatments of gibberellic acid and proline

Perforated modified atmosphere packaging differentially affects the fruit quality attributes and targeted major metabolites in bell pepper cultivars stored at ambient temperature

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