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Creator:: Dalton, David Andrews
Abstract:: PART I. The concentration of nickel in some soils may be insufficient to meet the requirements of enzymes such as urease in soybeans and hydrogenase in Rhizobium. Nickel availability in soils was examined by measuring microbial urease activity in soils which were treated with glucose and urea. Supplemental nickel was...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE THESIS OF David Andrews Dalton for the degree of Doctor of Philosophy in Botany

Creator:: Koch, Burton Lee
Abstract:: The primary purpose of this investigation was to determine the conditions necessary for the preparation of cell-free extracts of nodule bacteroids capable of catalysing the reduction of acetylene to ethylene and nitrogen to ammonia. Initial investigations were conducted to determine whether intact soybean root nodules would reduce acetylene to ethylene...
Resource Type:: Dissertation
Full Text:: , Bardawill and David (1949). In some experiments the protein content of the extracts were estimated from

Creator:: Simpson, Frank Berry
Abstract:: H₂-uptake positive strains (122 DES and SR) and H₂-uptake negative strains SR2 and SR3 of Rhizobium japonicum were examined for ribulosebisphosphate (RuBP) carboxylase and H₂-uptake activities during growth conditions which induced formation of the hydrogenase system. The rate of ¹⁴CO₂ uptake by hydrogenase-induced cells was about six times greater in...
Resource Type:: Masters Thesis
Full Text:: was prepared by Dr. David W. Emerich of this laboratory (see Emerich at al., 1979). Strain SR is a

Creator:: Wong, Peter Pasteur, 1941-
Abstract:: A major objective of this investigation was to determine the possible roles, if any, of poly-β-hydroxybutyrate and products of its metabolic breakdown in symbiotic nitrogen fixation by nodule bacteroids. Changes in poly -β- hydroxybutyrate content and in activities of nitrogenase, β-hydroxybutyrate dehydrogenase, and isocitrate lyase were studied under various conditions...
Resource Type:: Dissertation
Full Text:: - ing this thesis. I also wish to thank Drs. Robert A. Wildes and David Biggins for their constructive

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