Changes in metabolism, antioxidant compounds and enzymes in Portulaca oleracea L. in response to saline habitat

Document Type : Original Article

Authors

Botany Department, Faculty of Science, Mansoura University

10.21608/mjb.2021.460012

Abstract

Acomparative study based on the measured conductivity (salinity) of the two studied habitats classified to mesophytic and saline habitats in the Nile Delta coast. Field survey was carried out during March and April 2015 where the Portulaca oleracea plants were collected from the two studied habitats.
In this study, physical and chemical soil characteristics of the two studied habitats showed marked variation. Salinity played a role in inducing Portulaca oleracea to produce more content of total carbohydrates and soluble sugars as well as proline, electrolyte leakage and antioxidant enzymes; peroxidase, polyphenol oxidase and catalase compared with mesophytic habitat. Regarding to elements content, nitrogen and potassium have a significant increase in mesophytic habitat, as compared with saline habitats. Meanwhile, phosphorus, sodium and calcium increase in saline habitats more than mesophytic habitat. Alkaloids content, total phenols, flavonoids, tannins and anthocyanin of Portulaca oleracea increased significantly in saline habitats as compared with mesophytic habitat.

Keywords

Mansoura Journal of Biology
Volume 52, Issue 3
October 2021
Pages 1-9

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