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[Characteristics of phages of spore-forming bacteria isolated from the soil]. 1977

R R Azizbekian, and T L Bogdanova, and I B Minenkova, and A A Mikhailov, and V B Smirnov

Phages lyzing spore forming bacteria were isolated from soil, and their biological properties and fine structure were studied. The spectrum of lytic activity was determined as well as parameters of the intracellular phage growth. The burst size of the phage varies from 8 to 725 particles per infected cell, the latent period lasts 25-100 min for various phages. According to the data of electron microscopy, the phages are divided into three morphological groups. The phages Tg7, AR13 and BPP10 have a complex structure.

UI MeSH Term Description Entries
D008242 Lysogeny The phenomenon by which a temperate phage incorporates itself into the DNA of a bacterial host, establishing a kind of symbiotic relation between PROPHAGE and bacterium which results in the perpetuation of the prophage in all the descendants of the bacterium. Upon induction (VIRUS ACTIVATION) by various agents, such as ultraviolet radiation, the phage is released, which then becomes virulent and lyses the bacterium. Integration, Prophage,Prophage Integration,Integrations, Prophage,Prophage Integrations
D008854 Microscopy, Electron Microscopy using an electron beam, instead of light, to visualize the sample, thereby allowing much greater magnification. The interactions of ELECTRONS with specimens are used to provide information about the fine structure of that specimen. In TRANSMISSION ELECTRON MICROSCOPY the reactions of the electrons that are transmitted through the specimen are imaged. In SCANNING ELECTRON MICROSCOPY an electron beam falls at a non-normal angle on the specimen and the image is derived from the reactions occurring above the plane of the specimen. Electron Microscopy
D001412 Bacillus subtilis A species of gram-positive bacteria that is a common soil and water saprophyte. Natto Bacteria,Bacillus subtilis (natto),Bacillus subtilis subsp. natto,Bacillus subtilis var. natto
D001413 Bacillus thuringiensis A species of gram-positive bacteria which may be pathogenic for certain insects. It is used for the biological control of the Gypsy moth. Bacilan,Dipel,Thuricide
D001435 Bacteriophages Viruses whose hosts are bacterial cells. Phages,Bacteriophage,Phage
D012988 Soil Microbiology The presence of bacteria, viruses, and fungi in the soil. This term is not restricted to pathogenic organisms. Microbiology, Soil
D013045 Species Specificity The restriction of a characteristic behavior, anatomical structure or physical system, such as immune response; metabolic response, or gene or gene variant to the members of one species. It refers to that property which differentiates one species from another but it is also used for phylogenetic levels higher or lower than the species. Species Specificities,Specificities, Species,Specificity, Species

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