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Investigations into the physiology of nitrogen fixation : Part I. Nickel metabolism of plants and bacteria : Part II. Peroxide scavenging in soybean root nodules

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:: as an antioxidant and glutathione as a reductant to regenerate ascorbate from dehydroascorbate. The

Some properties of a particulate and a soluble nitrate reductase from Rhizobium japonicum

Creator:: Lowe, Richie Howard
Resource Type:: Dissertation
Full Text:: Title SOME PROPERTIES OF A PARTICULATE AND A SOLUBLE NITRATE REDUCTASE FROM RHIZOBIUM IAPONICUM

Enzymatic and respiratory studies on the role of cobalt in legumes

Creator:: De Hertogh, August
Resource Type:: Dissertation
Full Text:: interesting to find that propionate was utilized as a substrate, since cobalt in the form of vitamin B12

Purification and properties of a ferredoxin from Rhizobium japonicum bacteroids

Creator:: Carter, Kevin Richard
Resource Type:: Dissertation
Full Text:: : PURIFICATION AND PROPERTIES OF A FERREDOXIN FROM RHIZOBIUM JAPONICUM BACTEROIDS Abstract approved: Redacted

A biochemical investigation of the nitrogenase system from soybean root nodules

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:: A biochemical investigation of the nitrogenase system

Hydrogen-stimulated CO₂ fixation and coordinate derepression of hydrogenase and ribulosebisphosphate carboxylase in a H₂-uptake positive strain of Rhizobium japonicum

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:: Fixation and Coordinate Derepression of Hydrogenase and Ribulosebisphosphate Carboxylase in a H2-uptake

Nitrogen fixation associated with grasses and other species in Oregon

Creator:: Nelson, Arthur Duane
Abstract:: Nitrogen fixation in both natural and domestic grasslands of Oregon was studied using the acetylene reduction assay. A substantial number of these tests made gave positive acetylene reduction activity. Rates in the range of 60g N₂ fixed/ha/day were observed for some Agrostis species. Assuming that this rate proceeds for 100...
Resource Type:: Masters Thesis
Full Text:: grasslands of Oregon was studied using the acetylene reduction assay. A substan- tial number of these tests

Propionate metabolism and its relationship to leghemoglobin biosynthesis in soybean nodules

Creator:: Jackson, Earl Kenneth
Abstract:: Experiments are reported which demonstrate that a cobalt deficiency in R. meliloti results in a decreased cytochrome content of bacterial cells. It is concluded that the effect of cobalt deficiency on cytochrome content of Rhizobium cells and on the leghemoglobin content of nodules possibly may be explained by an effect...
Resource Type:: Dissertation
Full Text:: Redacted for Privacy approved y (Major professor) Experiments are reported which demonstrate that a

Some properties of ribonucleotide reductase in Rhizobium species

Creator:: Cowles, Joe Richard, 1941-
Abstract:: Ribonucleotide reductase from Rhizobium meliloti has been partially purified and characterized. The enzymatic reduction of ribonucleotides to deoxyribonucleotides is dependent upon B₁₂ coenzyme and dihydrolipoate. B₁₂ coenzyme was more effective than B₁₂ coenzyme analogues in the reductase reaction. The affinity of the R. meliloti reductase system for B₁₂ coenzyme was...
Resource Type:: Dissertation
Full Text:: contained a thioredoxin system which may function as the natural electron donor for ribonucleotide

An investigation of the metabolism of poly-β-hydroxybutyrate and its possible role in nitrogen fixation in soybean root nodules

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:: privacy / Dr. f14181-d--'7:7 Evans A major objective of this investigation was to determine the possible

ScholarsArchive@OSU

Investigations into the physiology of nitrogen fixation : Part I. Nickel metabolism of plants and bacteria : Part II. Peroxide scavenging in soybean root nodules

Some properties of a particulate and a soluble nitrate reductase from Rhizobium japonicum

Enzymatic and respiratory studies on the role of cobalt in legumes

Purification and properties of a ferredoxin from Rhizobium japonicum bacteroids

A biochemical investigation of the nitrogenase system from soybean root nodules

Hydrogen-stimulated CO₂ fixation and coordinate derepression of hydrogenase and ribulosebisphosphate carboxylase in a H₂-uptake positive strain of Rhizobium japonicum

Nitrogen fixation associated with grasses and other species in Oregon

Propionate metabolism and its relationship to leghemoglobin biosynthesis in soybean nodules

Some properties of ribonucleotide reductase in Rhizobium species

An investigation of the metabolism of poly-β-hydroxybutyrate and its possible role in nitrogen fixation in soybean root nodules

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