Influence of nickel and zinc on growth, metal accumulation, and uptake and transport of iron in basil (Ocimum basilicum L.).

Articles in Press

Document Type : Research Paper

Authors

1 Department of Biology, Payame Noor University, Tehran, Iran

2 Department of Biology Education, Farhangian University, P.O. Box 14665-889, Tehran, Iran

3 Graduate student,, Department of Biology, Faculty of Science and Technology, University of Isfahan

Abstract

Nickel (Ni) and zinc (Zn) are essential micronutrients which most of their contaminations are related by the increasing use of fertilizers and pesticides. Basil (Ocimum basilicum L.) is a medicinal plant that is also used as a vegetable. The present study focuses on the effects of the different concentrations of Ni and Zn on the growth factors, Ni and Zn accumulation also their effect on concentration of Iron (Fe) in root and shoot. The basil plants transferred to hydroponic mediums and after proper vegetative growth, they were exposed different concentrations of Ni and Zn for 10 days. The results showed that with increasing concentrations of Ni and Zn the growth significantly decreased, but the shoot to root ratio enhanced at the highest stress level in both elements. With the increasing the concentration of Ni and Zn in the medium, the accumulation of both heavy metals in the roots and shoot increased, and it caused a disruption in Fe transport, so the accumulation of Fe in the roots increased, but accumulation of theirs in shoot reduced. The accumulation of micronutrients in the roots was more than shoots in both heavy metals. However, translocation factor Zn was higher than Ni which indicated the basil is resistant to Zn accumulation. These results indicated that basil is Ni and Zn excluder plant, then root growth more was restricted in comparison with shoot. Therefore, basil planted in contaminated regions not only reduced yield, but also harmful and allergenic for its consumers.

Keywords

Main Subjects

Iranian Journal of Soil and Water Research

Articles in Press, Accepted Manuscript
Available Online from 09 March 2025

Files

Share

How to cite

Statistics