T. A. LaRue

Ithaca College

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Wolfgang Kurz

Technical University of Munich

T. G. Patterson

University of Birmingham

J. F. T. Spencer

Planta Piloto de Procesos Industriales Microbiológicos

Barbara E. Kneen

Cornell University

J. J. Child

University of Saskatchewan

N. F. Weeden

Montana State University

John Gallon

AstraZeneca (United Kingdom)

J. B. Peterson

National Institute of Standards and Technology

R. Glenister

Cornell University

O. L. Gamborg

Colorado State University

Cooperative Institutions

Cornell University

Ithaca College

Saskatchewan Research Council (Canada)

Graduate School Experimental Plant Sciences

University of California System

National Academies of Sciences, Engineering, and Medicine

United States Department of Agriculture

University of California, Los Angeles

University of Manitoba

University of Saskatchewan

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N₂ Fixation (C₂H₂) and Ureide Content of Soybeans: Environmental Effects and Source‐Sink Manipulations¹

Crop Science (1983)

T. G. Patterson T. A. LaRue

The use of ureides as an indirect index of symbiotic N 2 fixation requires an understanding of how their relationship is influenced by environmental factors. Source‐sink manipulation (leaf or pod removal) and environmental factors (time of day, light intensity, root anaerobiosis, and soil nitrate) were tested for their effects on acetylene reductiona ctivity (ARA) and ureide concentration in the shoot. In soybeans [ Glycine max (L.) Merr.] there was no significant diurnal variation of stem ureide concentration. Inhibition of ARA by root anaerobiosis reduced ureide concentrations in both xylem sap and stem tissue. Ureide concentrations in xylem sap reflected decreased N 2 fixation more rapidly than concentrations in stem tissue. The ureide content of stem tissue apparently responds more slowly to a reduction in ARA. Partial leaf removal or a reduction in light intensity reduced ARA. Defoliation increased concentrations of ureides in the stem. Loweringli ght intensity had no effect on stem ureide concentrations, but increased leaf ureide concentration. Pod removaldid not affect ARA but increased the concentrations of ureides in the stem. In the field, addition of 30 kg N ha ‐1 had little influence on ARA or ureide content of young stem or first stem internodes. Higher nitrate levels (100 and 200 kg N ha ‐1 ) greatly reduced both ureide concentration and ARA.

Plant stem

Sink (geography)

10.2135/cropsci1983.0011183x002300050004x

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Citations (29)

Carbon Metabolism in the Legume Nodule

Springer eBooks (1984)

T. A. LaRue J. B. Peterson Seiya Tajima

Nodule (geology)

Carbon fixation

Carbon fibers

10.1007/978-94-009-6923-0_224

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Citations (30)

Non-destructive estimate of nitrogenase activity (C2H2) of field-grown soybean

Plant and Soil (1986)

R. Glenister T. A. LaRue

Plant Physiology

10.1007/bf02375003

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Citations (2)

Portable gas chromatograph

Plant and Soil (1979)

Harry S. Holfeld Clifford S. Mallard T. A. LaRue

Acetylene

10.1007/bf02277957

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Citations (14)

Bacterial utilization of a hydrazine derivative as nitrogen source for growth

Canadian Journal of Microbiology (1979)

T. A. LaRue J. J. Child

The ability of microbes to metabolize the N--N bond seems rare. Pseudomonas sp. from soil can utilize 1,4,5,6-tetrahydro-6-oxo-3-pyridazinecarboxylic acid as C and N source. This appears to be the first report that a microbe can cleave a nitrogen--nitrogen bond in an organic compound and use the products for growth.

Hydrazine (antidepressant)

Derivative (finance)

10.1139/m79-121

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Citations (3)

THE IN VITRO METABOLISM OF ERYTHROCYTES FROM NEWBORN INFANTS

Canadian Journal of Biochemistry and Physiology (1960)

Alvin Zipursky T. A. LaRue L. G. Israels

In the red blood cells of the newborn there is a rapid fall in non-hydrolyzable phosphate during in vitro incubation. This difference appears to be due to a decreased rate of synthesis of 2,3-diphosphoglyceric acid in the erythrocyte of the newborn. In addition the incorporation of P 32 orthophosphate into the red blood cell is slower in the newborn than in the adult. During 4 °C storage of blood of adults and newborns there is a progressive fall in phosphate esters which is similar in both groups.The erythrocytes of the newborn contain more potassium and water than those of adults. During storage at 4 °C the cells of the newborn lose potassium more rapidly than those of the adult. This may be related to differences in membrane permeability.

Red Cell

10.1139/o60-090

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Citations (40)

THE UTILIZATION OF IMIDAZOLES BY YEASTS

Canadian Journal of Microbiology (1967)

T. A. LaRue J. F. T. Spencer

Eleven imidazoles were tested singly as nitrogen sources for 62 strains of yeast. L-Histidine and histamine were used by most strains, D-histidine by some, and histidinol only by a few. Four yeasts grew on compounds containing nitrogen only in the imidazole ring. Lipomyces starkeyii and Lipomyces lipoferus grew on imidazole, imidazole-4-methanol, imidazole-4-carboxylic acid, imidazoles-4-propionic acid, and urocanic acid. The two Lipomyces species, Trigonopsis variabilis and Torulopsis gropengiesseri, were able to grow on imidazole-4-acetic acid and imidazole-4-lactic acid.

Imidazole

Urocanic acid

10.1139/m67-104

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Citations (20)

Isocitrate supported nitrogenase activity in Gloeocapsa sp. LB 795

Canadian Journal of Microbiology (1973)

John Gallon Wolfgang Kurz T. A. LaRue

A system consisting of isocitrate, NADP, and ferredoxin can supply reducing power for acetylene reduction in broken-cell preparations of Gloeocapsa sp. LB 795. It is suggested that this system plays a physiological role in supporting nitrogen fixation, at least under conditions unfavorable for the photochemical generation of reductant.

Acetylene

Isocitrate dehydrogenase

10.1139/m73-074

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Citations (10)

Estimation of Nitrogenase Using a Colorimetric Determination for Ethylene

PLANT PHYSIOLOGY (1973)

T. A. LaRue Wolfgang Kurz

Ethylene is measured by oxidizing it to formaldehyde and determining the formaldehyde colorimetrically. The assay is applied to estimation of nitrogenase in nodulated legume roots by measuring the ethylene produced from acetylene.

Oxidizing agent

Acetylene

10.1104/pp.51.6.1074

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Citations (55)

Induced symbiosis mutants of pea (Pisum sativum) and sweetclover (Melilotus alba annua)

Plant Science (1988)

Barbara E. Kneen T. A. LaRue

Melilotus

10.1016/0168-9452(88)90007-6

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Citations (65)