The role of plant growth promoting bacteria and a leguminous plant in metal sequestration from metal contaminated environments by Brassica juncea

Authors: Gbotemi Adediran (University of Edinburgh)
Co-authored by industrial partner: No

Type: Thesis

State: Published (Approved)
Published: March 2015
Diamond Proposal Number(s): 5010 , 7757 , 8626

Abstract: The use of plants to extract toxic metals from contaminated land/soil is called phytoextraction and is increasingly being used as an environmentally sustainable biological remediation echnique1. However, most plants suffer from the toxicity of the metals and apart from specific species adapted to hyper-accumulate certain metals, their efficiency is critically dependent on growth rate2. A number of recent studies have demonstrated that inoculation of plants with bacteria that form symbiotic relationships and induce nodule formation by plant roots can both increase the efficiency of metal extraction and protect the plant from metal toxicity. The mechanisms involved are unclear, although the production of metal-chelating organic molecules can potentially increase extraction efficiency and ameliorate toxicity through complexation of the metal2. A potential and alternative mechanism is suggested by recent observations that bacteria accumulate metals, principally through adsorption to their cell walls bu also through intracellular uptake

Journal Keywords: Phytoremediation ; Zn Speciation ; Brassica Juncea ; Metal Contamination

Diamond Keywords: Bioremediation

Subject Areas: Environment, Biology and Bio-materials, Chemistry

Instruments: I18-Microfocus Spectroscopy

Added On: 09/09/2015 13:23

Discipline Tags:

Desertification & Pollution Plant science Earth Sciences & Environment Chemistry Life Sciences & Biotech

Technical Tags:

Spectroscopy X-ray Absorption Spectroscopy (XAS)