Heavy metal accumulation imparts structural differences in fragrant Rosa species irrigated with marginal quality water

Ecotoxicology and Environmental Safety
Muhammad AhsanFahim Nawaz

Abstract

Wastewater is an alternative to traditional sources of renewable irrigation water in agriculture, particularly in water-scarce regions. However, the possible risks due to heavy metals accumulation in plant tissues are often overlooked by producers. The present study aimed to identify heavy metals-induced structural modifications to roots of scented Rosa species that were irrigated with water of marginal quality. The chemical and mineral contents from the experimental irrigation canal water (control) and treated wastewater were below the limits recommended by the Pakistan Environmental Protection Agency (Pak-EPA) for medicinal plants. The experimentally untreated wastewater contained electrical conductivity (EC), chemical oxygen demand (COD), biological oxygen demand (BOD), and heavy metals (Co, Cu, Cd, Pb) that were above the recommended limits. The responses by wastewater-treated Rosa species (Rosa damascena, R. bourboniana, R. Gruss-an-Teplitz, and R. centifolia) were evaluated. The experimental data revealed that treated wastewater significantly increased the thickness of collenchyma (cortex and pith) and parenchyma tissues (vascular bundle, xylem, and phloem) of R. Gruss-an-Teplitz. Root dermal tissues (epidermis) of R. bou...Continue Reading

References

Apr 20, 2004·Environmental Pollution·S MonniN Millar
Apr 29, 2004·Journal of Agricultural and Food Chemistry·Valtcho D Zheljazkov, Philip R Warman
Feb 10, 2006·Ecotoxicology and Environmental Safety·Rajesh Kumar SharmaFiona Marshall
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Sep 25, 2007·Environmental Monitoring and Assessment·Afshin QishlaqiGiti Forghani
Mar 13, 2008·Environmental Toxicology and Chemistry·Michael St John WarneNancy Penney

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