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Effect Of Multifactorial Stress On Plant Pigments, Flavonoids And Polyphenols In Methanolic Extract Of Pisum Sativum

Journal of Education and Learning (EduLearn) 2025
Sarah Shahid, Sofia Nosheen, Mamoona Mamoona, Saira Riaz, Sadia Ismail Shah

Summary

Researchers exposed pea plants (Pisum sativum) to combined stressors — heavy metals (nickel, cadmium), phthalates (DMP and DnOP), and UV light — and found that the combined treatment caused greater reductions in chlorophyll, carotenoids, flavonoids, and phenolics than individual stressors, highlighting the compounded threat of co-occurring environmental pollutants on plant health.

Climate change, heavy metal toxicity, and the widespread distribution of phthalates in the environment, all create serious threats to plant ecosystems and their vital pigments. The combined effects of these stresses are more severe than each of their own. When plants are exposed to heavy metals, phthalates, and physical pollution(UV light), their photosynthetic capacity declines and increase oxidative stress in plants. In light of these considerations, this study presents an in-depth examination of the cumulative impact of heavy metals (specifically nickel and cadmium), phthalates(dimethyl phthalate and di-n-octyl phthalate), and physical stressors (UV light ) on the pigments, specifically chlorophyll A, chlorophyll B, and carotenoids and phytochemicals such as flavonoids and phenolics of Pisum sativum. The results of this study suggest that plants treated with a combination of these stressors have considerable alterations in their pigment profiles, as well as its defence system and demonstrating the complicated impact of environmental factors on plant.

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