Results 321 to 330 of about 154,690 (360)
Some of the next articles are maybe not open access.
Absence of Sterols in Blue-green Algae
Nature, 1964STEROLS 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, 1973The 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
The Fine Structure of Blue-Green Algae
Annual Review of Microbiology, 1968INTRODUCTION • . . . . . . . . . . . . . . . . . . . . . . . . . . , EXTERNAL STRUCTURES AND CELL WALLS , . . , . . , . . . . . , . , . . , . . . . Sheath morphology , . , . . . . . . . . . . . . . . . . , ... . . . . . . . , . , . . . . . . . . Lysozyme ef ects , . . . . . . . , . . . . , . , .. . . . . . . . . . . . . , . , . . , .
openaire +3 more sources
Cutaneous sensitization to blue-green algae
Journal of Allergy, 1953Abstract 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, 1973Effect 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, 1975Summary1. 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, 1968Abstract 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
The Thermophilic Blue-green Algae
1978I have discussed in Chapter 3 in a general way the thermophilic blue-green algae. Here I propose to discuss the biology and ecology of those blue-green algae that live around the upper temperature limits. An excellent review on the whole group of thermophilic blue-green algae has been provided by Castenholz (1969a), but a few key concepts have arisen ...
openaire +2 more sources
Control of sporulation in a blue-green alga
Developmental Biology, 1965Abstract Sporulation of the blue-green alga Anabaena cylindrica Lemm. generally ensues adjacent to heterocysts, in strings of from one to several cells. As a preliminary to an attempt to test whether heterocysts help to initiate sporulation of cells adjacent to them, environmental conditions conducive to rapid, sure sporulation adjacent to ...
openaire +3 more sources