Results 261 to 270 of about 54,026 (308)

Proline inhibits N2-fixation in Anabaena 7120

Biochemical and Biophysical Research Communications, 1986
The uptake and metabolism of proline by Anabaena 7120 is demonstrated. Uptake is linear over the first hour and it appears that the rate of proline oxidation is sufficient to account for growth is suggested by the finding that exogenous proline represses heterocyst differentiation and inhibits nitrogen fixation in Anabaena 7120, without affecting ...
D W, Spence, W D, Stewart
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The influence of shading on associative N2 fixation

Plant and Soil, 1984
The effect of reduced solar radiation on associative N2-fixation and plant parameters was studied in three field experiments (1978–80). ‘Gahi-3’ pearl millet (Pennisetum americanum (L.) K. Monch.) field plots were shaded with saran shade cloth that reduced solar radiation by 50% and 75%.
Rex L. Smith, S. C. Schank, R. C. Littell   +2 more
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Associative N2 Fixation with Azospirillum

1984
The association of specific microorganisms with plant roots is an ancient observation. The most obvious examples are pathogenic in nature, where the effects of the microorganism on the plant are usually plainly visible as damage to root tissue, which is also often devastating to the health of the host plant.
David H. Hubbell, Murray H. Gaskins
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Biogeography of N2 Fixation in the Surface Ocean

2021
Diazotrophs and N2 fixation are not homogenously distributed across the oceans, but have distinct patterns of rates, abundances and species composition. These patterns reflect the dynamic processes in the ocean and atmosphere and the distribution of nutrients, particularly P and Fe.
Jonathan P. Zehr, Douglas G. Capone
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History of Research on Marine N2 Fixation

2021
Research into phytoplanktonic N2-fixers in the oceans such as the cyanobacterium Trichodesmium dates back to early marine phycological studies in the late 1800s, predating the knowledge that these organisms were actively fixing N2. Research into the quantitative role of N2 fixers surged in the early 1960s with the advent of new techniques to measure ...
Jonathan P. Zehr, Douglas G. Capone
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Inheritance of N2 fixation efficiency in cowpea

Euphytica, 1986
Host plant genetics of N2 fixation in the cowpea (Vigna unguiculata (L.) Walp.) — Rhizobium symbiosis was investigated in the field with a mixed strain inoculum and in the greenhouse with a single strain inoculum. Five cowpea genotypes, including ‘H-Brown Crowder’ and ‘L-Bush Purple Hull’, were used to generate populations for genetic studies.
J. C. Miller, K. W. Zary, G. C. J. Fernandez   +2 more
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Detection of Intermediates in Chemical N2 Fixation

1985
It has been suggested that the biological reduction of N2 involves, after N2 binding, a series of six electron-proton transfer steps (Thorneiey, Lowe, 1984). No nitrogen-hydride intermediates have been identified in any biological system. However, indirect evidence has led to the following proposed intermediates: (1) diazene-level(N2H2) intermediate ...
T. Adrian Georg, Robert C. Tisdale
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N2 Fixation and Photosynthesis in Microorganisms

1979
The inter-relationships between N2 fixation and photosynthesis, particularly in agriculturally important legumes, has for long attracted attention (see Wilson, 1940; Quispel, 1974; Burns and Hardy, 1975; Nutman, 1976; Hardy, 1977; Pate, 1977). In legumes and in other symbiotic systems, except those involving blue-green algae (see Fogg et al., 1973 ...
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Contribution of N2 Fixation for the World Agriculture

2012
Plant production of high quality as well as the availability of foods rich in protein is crucially dependent on nitrogen. Tropical agricultural soils often have impaired production due to limited availability of nitrogen, which leads to use of nitrogen fertilizers and alternative resources such as biological nitrogen fixation (BNF). The latter has been
André Luís Braghini Sá, Armando Cavalcante Franco Dias, Manoel de Araújo Teixeira, Rosana Faria Vieira   +3 more
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H2 metabolism in photosynthetic bacteria and relationship to N2 fixation

Annales de l'Institut Pasteur / Microbiologie, 1983
The photosynthetic bacteria can evolve H2 in the light through a nitrogenase-mediated reaction. The nitrogenase enzyme in the photosynthetic bacteria is similar to other nitrogenases. It is made of two soluble components: a) the Fe protein (dinitrogenase reductase or Component II) which receives electrons from ferredoxin, and b) the Mo-Fe protein ...
J C, Willison, Y, Jouanneau, A, Colbeau, P M, Vignais   +3 more
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