Author(s):
1. Aisha Tabassum:
Stress Physiology and Phenomic Center, Department of Botany, University of Karachi,Karachi-75270,Pakistan
2. Zamin Shaheed Siddiqui:
Stress Physiology and Phenomic Center, Department of Botany, University of Karachi,Karachi-75270,Pakistan
Abstract:
The present study intended to evaluate the remediation ability of carrot plants to remove Cu and Zn from the contaminated soil using growth and biochemical attributes. Furthermore, the possible mechanisms such as accumulation or exclusion regarding metal tolerance in carrot plants were also assessed. Our data showed that metal toxicity affected the plants. However, the growth of root was decreased substantially as compared to shoot under heavy metal stress. The oxidative stress indicators such as H2O2 and Malondialdehyde (MDA) were increased as the metal concentration increased. Physiological mechanism enlightened that the level of soluble sugars and chlorophyll content index was reduced as the metal concentration increased in the soil due to damages in the reactive centers of PSII at higher metal concentrations, Cu in particular. Furthermore, higher metal content was observed in roots as compared to shoots. Greater bioaccumulation factor and lower translocation factors were recorded for the carrot plants. The zinc metal showed relatively better physiological activities due to less metal accumulation in shoot. It is concluded that carrot plants tolerate Cu and Zn by accumulation of these ions in their roots so that this plant can be better choice for metal contaminated soil.
Page(s):
251-263
DOI:
DOI not available
Published:
Journal: International Journal of Biology and Biotechnology, Volume: 17, Issue: 2, Year: 2020
Keywords:
oxidative stress
,
heavy metal
,
carrot
,
Copper and Zinc
References:
References are not available for this document.
Citations
Citations are not available for this document.