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Perspectives of bacterial ACC deaminase in phytoremediation

Paper ID Volume ID Publish Year Pages File Format Full-Text
37395 45349 2007 7 PDF Available
Title
Perspectives of bacterial ACC deaminase in phytoremediation
Abstract

Phytoremediation of contaminated soil and water environments is regulated and coordinated by the plant root system, yet root growth is often inhibited by pollutant-induced stress. Prolific root growth could maximize rates of hyperaccumulation of inorganic contaminants or rhizodegradation of organic pollutants, and thus accelerate phytoremediation. Accelerated ethylene production in response to stress induced by contaminants is known to inhibit root growth and is considered as a major limitation in improving phytoremediation efficiency. Recent work shows that bacterial 1-aminocyclopropane-1-carboxylate (ACC) deaminase regulates ethylene levels in plants by metabolizing its precursor ACC into α-ketobutyric acid and ammonia. Plants inoculated with ACC deaminase bacteria or transgenic plants that express bacterial ACC deaminase genes can regulate their ethylene levels and consequently contribute to a more extensive root system. Such proliferation of roots in contaminated soil can lead to enhanced uptake of heavy metals or rhizodegradation of xenobiotics.

First Page Preview
Perspectives of bacterial ACC deaminase in phytoremediation
Publisher
Database: Elsevier - ScienceDirect
Journal: - Volume 25, Issue 8, August 2007, Pages 356–362
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering