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Download Advances in Microbial Physiology, Volume 19 by A.H. Rose (Editor), J. Gareth Morris (Editor) PDF

By A.H. Rose (Editor), J. Gareth Morris (Editor)

ISBN-10: 0080579795

ISBN-13: 9780080579795

ISBN-10: 0120277190

ISBN-13: 9780120277193

This quantity in a research-level sequence covers assorted facets of microbial body structure and biochemistry together with inositol metabolisms in yeasts, bacterial adhesion, natural acids, the bacterial flagellum and the mechanical behaviour of bacterial mobilephone partitions. it really is meant to be of use to microbiologists, biochemists and biotechnologists. different similar works during this sequence are volumes 29, 30 and 31.

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Additional info for Advances in Microbial Physiology, Volume 19

Sample text

On soft agar medium they grew as wall-less L-forms but changed back to bacteria if placed on media containing high concentrations of either gelatin or agar. The ability of bacteria to follow two different paths has, by now, been shown to be true for a number of species. For this reason such strains have come to be called “unstable” L-forms. However, a semblance of permanency can be given to them, either by repeated transferrance on soft agar or, much better, by continuing to include in the growth medium antibiotics, such as the penicillins or cycloserine, that stop the formation of walls.

Evidence was obtained some years ago (Young, 1967) that some bacteriophages adsorb specifically to the glycosyl substituents of wall teichoic acids. Making use of this observation, together with the possibility of reversibly exchanging wall teichoic acid for teichuronic acid by growing B. subtilis in a chemostat with a phosphate-limiting medium (Ellwood and Tempest, 1969, 1972), the disappearance and reappearance of phage adsorption sites on the walls of B. subtilis was examined (Archibald and Coapes, 1976, Archibald, 1976).

Also possible are comparative studies of the division processes and nuclear segregation in wall-less apparently chaotically organised L-forms. V. Autolytic Enzyme Function and Cell-Cell Interaction It was widely believed until a few years ago that autolytic enzymes played a vital part in expanding the walls of bacteria during growth and division but, whilst such a role is s t i l l possible, it would seem increasingly unlikely. In Gram-positive species, these enzymes seem rather to be involved with three other major aspects of bacterial behaviour, cell separation, turnover of the walls and formation of organised flagella.

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Advances in Microbial Physiology, Volume 19 by A.H. Rose (Editor), J. Gareth Morris (Editor)


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