[Electron microscopic study of the cells of variants of Bacillus thuringiensis var. galleriae forming colonies with altered morphology]. 1977

T A Smirnova, and I B Minenkova, and E M Netyksa, and R R Azizbekian

Colonial-morphological variants of Bacillus thuringiensis var. Galleriae were studied by electron microscopy. The S variant was found to be asporogenous, whereas the R variant produced mature spores. Morphological modifications in the cell were followed in the course of sporulation. Spores were shown to have thin filamentous and tubular protrusions which had not been so far described in crystalliferous bacteria. Preparations from colonies of the R variant contained peculiar structures which resembled phage tails. A possible function of these structures is discussed.

UI MeSH Term Description Entries
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
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
D013171 Spores, Bacterial Heat and stain resistant, metabolically inactive bodies formed within the vegetative cells of bacteria of the genera Bacillus and Clostridium. Bacterial Spores,Bacterial Spore,Spore, Bacterial

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