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Genetically modified plants in phytoremediation of heavy metal and metalloid soil and sediment pollution

Paper ID Volume ID Publish Year Pages File Format Full-Text
14653 1237 2009 12 PDF Available
Title
Genetically modified plants in phytoremediation of heavy metal and metalloid soil and sediment pollution
Abstract

Phytoremediation to clean up metal- and metalloid-contaminated soil or sediments has gained increasing attention as environmental friendly and cost effective. Achievements of the last decade suggest that genetic engineering of plants can be instrumental in improving phytoremediation. Transgenic approaches successfully employed to promote phytoextraction of metals (mainly Cd, Pb, Cu) and metalloids (As, Se) from soil by their accumulation in the aboveground biomass involved mainly implementation of metal transporters, improved production of enzymes of sulphur metabolism and production of metal-detoxifying chelators — metallothioneins and phytochelatins. Plants producing bacterial mercuric reductase and organomercurial lyase can covert the toxic ion or organomercury to metallic Hg volatized from the leaf surface. Phytovolatization of selenium compounds was promoted in plants overexpressing genes encoding enzymes involved in production of gas methylselenide species. This paper provides a broad overview of the evidence supporting suitability and prospects of transgenic research in phytoremediation of heavy metals and metalloids.

Keywords
Bioremediation; Phytoextraction; Phytovolatization; Hyperaccumulation; Heterologous gene expression
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Genetically modified plants in phytoremediation of heavy metal and metalloid soil and sediment pollution
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biotechnology Advances - Volume 27, Issue 6, November–December 2009, Pages 799–810
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us