Date of Award

12-14-2009

Document Type

Thesis

First Advisor

Dr. Michael Shin

Second Advisor

Dr. Richard Schaeffer

Abstract

Many heavy metals, including nickel, are vitally important to plant species at very low concentrations in the environment, but become quite toxic when present in higher concentrations (Kovalchuk et al. 2001). Nickel is vital in small amounts to plants because it is used in some enzymatic reactions as a co-factor (Mizuno et al. 2005). Most notably, nickel is a necessary component of ureases in higher plants and therefore necessary for nitrogen metabolism (Brown et al. 1990).

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