Results 331 to 340 of about 278,655 (398)

Hydrogen metabolism in blue-green algae

Biochimie, 1978
This manuscript reviews the literature on hydrogen metabolism in blue-green algae and reports some new data from this laboratory. H2-formation by intact cells is found to be catalyzed exclusively by nitrogenase. Its rate appears to be variable from strain to strain used byt is--in our hands--very small.
Hermann Bothe, G. Eisbrenner, E. Distler
openaire   +3 more sources

Nitrogen chlorosis in blue-green algae

Archiv f�r Mikrobiologie, 1969
Nitrogen deficient Anacystis nidulans contained normal levels of chlorophyll-a and carotenoids but did not contain any phycocyanin. These organisms also contained large amounts of polysaccharide. The addition of nitrate to a deficient culture resulted in the recovery of normal pigmentation over a period of several hours.
Arnold J. Smith, Arnold J. Smith, Mary Mennes Allen, Mary Mennes Allen   +3 more
openaire   +3 more sources

Absence of Sterols in Blue-green Algae

Nature, 1964
STEROLS are widely distributed in Nature, but they have not so far been detected in bacteria1. Among the higher plants and algae which have been examined, only the primitive blue-green algae (division, Cyanophyta) have been reported to lack sterols2.
Konrad Bloch, E. Y. Levin
openaire   +3 more sources

Ammonia assimilation in blue-green algae

Archiv f�r Mikrobiologie, 1973
The occurrence of alanine dehydrogenase (AlaDH), glutamate dehydrogenase (GDH), and 2-ketoglutarate: glutamine amidotransferase (GGAT), has been surveyed in a number of blue-green algae. Among nine unicellular strains grown with nitrate, and belonging to five of the major typological groups, AlaDH was present in seven, and GDH in all eight that were ...
Michael Doudoroff, Alasdair Neilson
openaire   +3 more sources

Blue-Green Algae in Surface Water: Problems and Opportunities

Current Pollution Reports, 2020
H. Vu, L. Nguyen, J. Zdarta, Tran T. V. Nga, L. Nghiem   +4 more
semanticscholar   +1 more source

The Fine Structure of Blue-Green Algae

Annual Review of Microbiology, 1968
INTRODUCTION • . . . . . . . . . . . . . . . . . . . . . . . . . . , EXTERNAL STRUCTURES AND CELL WALLS , . . , . . , . . . . . , . , . . , . . . . Sheath morphology , . , . . . . . . . . . . . . . . . . , ... . . . . . . . , . , . . . . . . . . Lysozyme ef ects , . . . . . . . , . . . . , . , .. . . . . . . . . . . . . , . , . . , .
openaire   +3 more sources

Cutaneous sensitization to blue-green algae

Journal of Allergy, 1953
Abstract 1.1. A case history is presented in which a child developed an erythematous-papulo-vesicular dermatitis of the exposed portions of the body on swimming in a lake containing a "water bloom" of blue-green algae. 2.2. The patient was found to have an allergic contact type dermatitis due to cutaneous sensitivity to phycocyanin, the blue ...
Charles B. Reif, Sheldon G. Cohen
openaire   +3 more sources

Effect of pesticides on blue-green algae

Archiv f�r Mikrobiologie, 1973
Effect of pesticides, i.e., Benzene Hexachloride, Lindane, Diazinon and Endrin that are often used in India was observed on nitrogen-fixing blue-green algae Cylindrospermum sp., Aulosira fertilissima Ghose and aerobically non-nitrogen-fixing blue-green alga Plectonema boryanum strain 594.
openaire   +3 more sources

THE HETEROCYSTS OF BLUE‐GREEN ALGAE (MYXOPHYCEAE)

Biological Reviews, 1975
Summary1. Heterocysts are found in many species of filamentous blue‐green algae. They are cells of slightly larger size and with a more thickened wall than the vegetative cells.2. Structural details of the heterocyst are: the presence of three additional wall layers, the absence of granules, sparse thylakoid network throughout, except at the poles ...
openaire   +3 more sources

NADH oxidase in Blue-Green algae

Biochemical and Biophysical Research Communications, 1968
Abstract Although particulate fractions prepared from two colorless members of the Cyanophyta were shown by Webster and Hackett (1966) to possess NADH oxidase, it was recently reported that no NADH oxidase activity could be detected in particles isolated from some pigmented members of the Cyanophyta ( Smith et al. , 1967 ). This communication
openaire   +3 more sources