Electronic Theses and Dissertations

Award/Availability

Open Access Thesis

Keywords

Bioremediation; Mycorrhizas--Effect of pollution on; Herbicides--Environmental aspects;

Abstract

Soil bioremediation has primarily focused on the use of free living, actively growing microorganisms to degrade toxic organic substances. Recently, however, plants and rhizosphere activity, including mycorrhizal fungi have been increasingly studied to determine the role that consortial assemblages may play in bioremediation. While the enhanced absorbtion of nutrients, water, and minerals by mycorrhizal fungi has been well documented, less is known about their role in the degradation of soil contaminants. Using the Biolog plate technique, microbial communities were characterized in Native Prairie, Corn, and Non-Native Prairie vegetative strips prior to, and after two applications of Acetachlor, Alachlor, and Atrazine. Mycorrhizal hyphae growth was also examined under increasing concentrations of the same three chemicals. Microbial biomass was affected by herbicide application among the vegetative types in the test strips. Mycorrhizae grown on various concentrations of herbicides also showed decreased growth as herbicide concentrations increased.

Date of Award

1996

Degree Name

Master of Science

Department

Environmental Science Program

Department

Tallgrass Prairie Center

First Advisor

James E. Jurgenson, Chair

Date Original

1996

Object Description

1 PDF file (ix, 96 pages)

Language

EN

File Format

application/pdf

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