Cadmium Tolerance and Phytoremediation Strategies of Selected Tropical plants Cultivated on Industrial Dump Site under the Influences of Two Mycobionts
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Date
2020-01-23
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Publisher
West African Journal of Applied Ecology
Abstract
This research was carried out on a waste disposal site of a paint industry in Ijebu- Ijesha, Osun State, Nigeria in an
attempt to assess the cadmium toxicity tolerance and bioremediation strategies of selected tropical plants cultivated
under the influence of two mycobionts. On the waste disposal site, two plots (Plot A and B) having size of about 9
m by 12 m each were prepared with a control plot (Plot C) which is a non-polluted site. The experimental design
on the first plots (Plot A) was 4x2x3 in which viable seeds of the four selected weeds were grown and inoculated
with two mycobionts (Glomus intraradices and Glomus mosseae) respectively in a randomized complete block
design with three replicates. However, on the second (Plot B) and control plots, only the seeds of the weeds were
grown without mycorrhiza treatment using the same experimental design of 4x3 respectively. After Twelve weeks
of planting, each plant was harvested, separated into root and shoot tissues and analysed for Cd concentrations
using Atomic Absorption Spectrophotometry (AAS). Data collected were subjected to descriptive and inferential
statistics. The highest (18.51 mg/kg) concentrations of Cd were reported in Amaranthus spinosus with root and
shoot bioconcentration factors; and transfer factors greater than 1.00. Out of the four plants, 75% act as cadmium
phytostabilizers in the absence of inocula and were good candidates for the biomanagement of hazardous sites
while all the plant displayed the characteristics of a cadmium phytoextractor under mycorrhizal inoculation with
Amaranthus spinosus having the highest mobility indices of cadmium under the influence of Glomus intraradices.
The study concluded that the four weeds are good Cd phytoextractors in the remediation and biomanagement of
marginal lands under bioaugmentation.
Description
Staff Publication
Keywords
Glomus intraradices,, Amaranthus spinosus,, Cadmium,, Mobility indices
Citation
Dada, O.E. (2019). Cadmium Tolerance and Phytoremediation Strategies of Selected Tropical plants Cultivated on Industrial Dump Site under the Influences of Two Mycobionts. West African Journal of Applied Ecology, 27, 106-125.