Degree Name
MS (Master of Science)
Program
Biology
Date of Award
8-2005
Committee Chair or Co-Chairs
Ranjan N. Chakraborty
Committee Members
Arun Goyal, Bert C. Lampson
Abstract
Iron is essential to the majority of microorganisms; it is an important cofactor in many cellular processes and enzymes. However in an aerobic environment and at biological pH, iron is primarily found as insoluble oxyhydroxides and is unavailable to microorganisms. Many bacteria have the ability to produce siderophores, low molecular weight compounds that have a high affinity for Fe3+. Siderophores are part of a multi-component system that actively transports the iron-siderophore complex into the cytoplasm. Rhizobia are characterized by their ability to form symbiotic relationships with leguminous plants, where they can fix nitrogen for the host plant and the plant provides the bacteria with nutrients. Under iron-limiting conditions, Rhizobia are known to produce siderophores. Rhizobium leguminosarum IARI 917 produces one dihydroxamate-type siderophore. This siderophore has been purified and chemically characterized. Results indicate that this strain is producing schizokinen, which has not been described in a member of the Rhizobia family.
Document Type
Thesis - unrestricted
Recommended Citation
Storey, Erin P., "Isolation, Purification, and Chemical Characterization of the Dihydroxamate-Type Siderophore, "Schizokinen," Produced by Rhizobium leguminosarum IARI 917." (2005). Electronic Theses and Dissertations. Paper 1050. https://dc.etsu.edu/etd/1050
Copyright
Copyright by the authors.