1964
DOI: 10.1099/00221287-35-2-351
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Cellular Factors Affecting Nitrogen Fixation in the Blue-Green Alga Chlorogloea fritschii

Abstract: SUMMARYSynchronous cultures of a nitrogen-fixing blue-green alga, hitherto known as ChZorogZoeafi&chii but more probably an anomalous species of the genus Nostoc, were obtained by a combination of light and temperature treatments. Variation in dimensions, dry weight, pigment content and total nitrogen content of cells was followed during the development of synchronous cultures. The nitrogen-fixing activity was greatest in the small-celled filaments which develop from the endospores and predomhate during expone… Show more

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Cited by 43 publications
(12 citation statements)
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“…The structure and development of Chlorogloeopsis fritschii, type species of this monotypic genus, were well described by Mitra (1950), Fay et al (1964) and by Mitra & Pandey (1966). Recently, Evans et al (1976) studied the effect of culture conditions on the morphology of Chlorogloeopsis fritschii (strain PCC 69 12) and found that the filamentous phase of development is repressed under photoheterotrophic and chemoheterotrophic growth conditions.…”
Section: Reference Strain: Pcc 7102mentioning
confidence: 80%
“…The structure and development of Chlorogloeopsis fritschii, type species of this monotypic genus, were well described by Mitra (1950), Fay et al (1964) and by Mitra & Pandey (1966). Recently, Evans et al (1976) studied the effect of culture conditions on the morphology of Chlorogloeopsis fritschii (strain PCC 69 12) and found that the filamentous phase of development is repressed under photoheterotrophic and chemoheterotrophic growth conditions.…”
Section: Reference Strain: Pcc 7102mentioning
confidence: 80%
“…The first descriptions of this organism described filamentous and irregular clumps of cells (Mitra, 1950;Mitra & Pandey, 1966) and the transitions between cell types led to the suggestion of a 'life-cycle' in which the filamentous character gave way to large groups of polygonal cells (Fay, Kumar & Fogg, 1964;Fogg et al 1973). The change from mobile, filamentous cells to larger immobile aseriate types forms the basis of a complex life-cycle in Nostoc muscorum G (see Lazaroff,1g73), changes between those morphological types being initiated by red light and reversed by green light.…”
Section: Introductionmentioning
confidence: 99%
“…Investigations of the heterotrophic growth of Tolypothrix tenuis by Kiyohara, Fujita, Hattori & Watanabe (1960, 1962, another blue-green alga known for its ability to fix molecular nitrogen, were made in the presence of combined nitrogen but no account was given about attempts to grow the alga in nitrogen-free medium in the dark. When Fay & Fogg (1962) found that the blue-green alga known as Chlorogloea fritschii (but see Fay, Kumar & Fogg, 1964) was able to fix nitrogen not only in the light but also in the dark, it was thought desirable to examine the conditions of heterotrophic growth and nitrogen fixation by this alga.…”
Section: Introductionmentioning
confidence: 99%