Plant Performance and Defensive Role of Proline Under Environmental Stress

Mundada, Pankaj S.; Jadhav, Suchita V.; Salunkhe, Supriya S.; Gurme, Swati T.; Umdale, Suraj D.; Nikam, Tukaram D.; Ahire, Mahendra L.

doi:10.1007/978-3-030-78521-5_8

Cited by 3 publications

(1 citation statement)

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“…These are chemical messengers are produced in plants in small concentrations and control several morphophysiological and biochemical attributes of plants (Ahmad et al, 2022;Mubarik et al, 2021;Sabagh et al, 2021;Mir et al, 2022;Raza et al, 2022b). The amino acid proline (PRO) is an osmolyte that is produced and accumulated under different environmental stresses, such as salinity stress (Mundada et al, 2021). The exogenous application of PRO to plants under salinity stress enhances their growth and physiological and biochemical attributes by alleviating and hampering the negative impacts of salinity stress (Tabssum et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Role of foliar spray of plant growth regulators in improving photosynthetic pigments and metabolites in Plantago ovata (Psyllium) under salt stress–A field appraisal

Samad¹,

Shaukat²,

ANSARI³

et al. 2023

Biocell

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Salinity is one of the major abiotic factors that limit the growth and productivity of plants. Foliar application of plant growth regulators (PGRs) may help plants ameliorate the negative impacts of salinity. Thus, a field experiment was conducted at the Botanical Garden University of Balochistan, Quetta, to explore the potential role of PGRs, i.e., moringa leaf extract (MLE; 10%), proline (PRO; 1 µM), salicylic acid (SA; 250 µM), and thiourea (TU; 10 mM) in ameliorating the impacts of salinity (120 mM) on Plantago ovata, an important medicinal plant. Salinity hampered plant photosynthetic pigments and metabolites but elevated oxidative parameters. However, foliar application of PGRs enhanced photosynthetic pigments, including Chl b (21.11%), carotenoids (57.87%) except Chl a, activated the defense mechanisms by restoring and enhancing the metabolites, i.e., soluble sugars (49.68%), soluble phenolics (33.34%), and proline (31.47%), significantly under salinity stress. Furthermore, foliar supplementation of PGRs under salt stress led to a decrease of about 43.02% and 43.27% in hydrogen peroxide and malondialdehyde content, respectively. Thus, PGRs can be recommended for improved photosynthetic efficiency and metabolite content that can help to get better yield under salt stress, with the best and most effective treatments being those of PRO and MLE to predominately ameliorate the harsh impacts of salinity.

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