Bacterial Spores

Cook, Robert P.

doi:10.1111/j.1469-185x.1962.tb01035.x

Cited by 24 publications

(10 citation statements)

References 28 publications

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“…Conditions close to optimum conditions for multiplication must be provided in order for the organism to progress to the stage of spore-formation. We agree with Cook (1932) that the teleological argument does not give a true indication of the primary function of the spore.…”

Section: Factors Influencing Spore-formationsupporting

confidence: 85%

“…STANHOPE BAYNE-JONES AND ALEXANDER PETRILLI loidal dehydration in bacteria. Probably most bacteriologists accept the opinion of Koch and de Bary and would agree with Cook (1932), who in his recent paper on bacterial spores, states that de Bary's account of the growth of the spore from a granule could not be bettered. A review of the original reports of observations on unstained bacilli, however, arouses some doubt as to whether the methods of periodic visual observations and staining procedures used in those studies were actually capable of yielding sufficient information to support the conclusions drawn from them.…”

mentioning

confidence: 93%

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Cytological Changes during the Formation of the Endospore in Bacillus megatherium

Bayne‐Jones

Petrilli

1933

J Bacteriol

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Reviewers of our knowledge of the mode of formation of endospores in bacilli usually present the evidence under one or more of three theses: (1) the endospore is formed by the growth of a specialized granule in the bacterial protoplasm; (2) the endospore is formed by the fusion of a number of granules, some of which may be nuclear material; (3) the endospore is formed by gradual condensation of cell-substance, possibly due to dehydration. These notions have been derived from the study of both stained and unstained bacilli. Although the origins of these conceptions are obscure, they can be associated with names of distinguished bacteriologists. The first of these opinions was expressed by Koch (1876) in his description of the growth of the spore from a granule in Bacillus anthracis. de Bary (1887) noted the growth of the spore from a granule in Bacillus megatherium and Ward (1895) described the same process in Bacillus ramosus. Ernst (1888-1889) and Babes (1889) are the sponsors of the second theory of spore-formation and their view of the origin of the spore in the fusion of granules, composed chiefly of nuclear material, has been corrected and extended in modified form by Schaudinn (1902) and Dobell (1908, 1909, 1911). The third conception of spore-formation by protoplasmic condensation has been in the minds of many investigators. Matzuschita (1902) mentioned it definitely and lately von DarAnyi (1927, 1930) has emphasized it as a consequence of his observations on the effects of col

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Section: Factors Influencing Spore-formationsupporting

confidence: 85%

mentioning

confidence: 93%

Cytological Changes during the Formation of the Endospore in Bacillus megatherium

Bayne‐Jones

Petrilli

1933

J Bacteriol

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“…The literature on physiological features of endospore formation has been reviewed by several authors (14,20,55,58,98). Though there would seem to be at present a fairly general agreement with the view of Knaysi (58) that sporulation is a normal process, a divergence of opinion exists as to the fundamental nature of this process and the underlying conditions leading to its expression.…”

Section: Spore Formationmentioning

confidence: 92%

“…They possess a full complement of the naturally occurring amino acids. There are no obvious clues in chemical composition to suggest the basis for the endospore's unique physiological properties (20,21,30,44,58,95).…”

Section: Part I Biological Role Of Spores Carl Lamannamentioning

confidence: 99%

Symposium on the Biology of Bacterial Spores1

Williams¹,

Lamanna²,

Knaysi³

et al. 1952

Bacteriological Reviews

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I This review results from a symposium on bacterial spores held at the annual meetings of the Society of American Bacteriologists at Chicago, 28 May 1951. 0. B. Williams was the convenor and has served as editor of these papers. 'The preparation of this section of the review was supported by an institutional grant from the American Cancer Society. ' Abstract prepared by the author. 4'Because of limitations of space it has been necessary to restrict references. An unabridged list of references pertinent to this section of the review may be obtained from the author.

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“…The respiratory activity of such spores was found by Cook (1932) to be 90 per cent that of vegetative cells, while Tarr (1933) obtained a value of 35 to 40 per cent, and Keilin and Hartree (1947) found the rate to be only 6 per cent. Both Tarr (1933) and Keilin and Hartree (1947) heat shocked spore suspensions at 80 C for 30 minutes immediately prior to conducting manometric experiments, purportedly to shorten the time required to obtain straight line respiration curves.…”

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confidence: 95%

The Effect of Heat and Glucose on Endogenous Endospore Respiration Utilizing a Modified Scholander Microrespirometer

Crook

1952

J Bacteriol

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Considerable work has been reported in the last few years on factors affecting the sporulation and germination of bacterial endospores, but there is a marked paucity of literature on the metabolic activity of the resting spore. This is undoubtedly the result of a rather general assumption that these forms represent a dormant stage exhibiting little, if any, metabolic activity and possessing no functional enzymes. There have been previous reports that show that this assumption is not valid. Ruehl (1923) found a gelatinase activity in some instances. Tarr (1933), following the lead of Cook (1932), was able to definitely demonstrate an active glucose dehydrogenase in the spores of several members of the family

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Bacterial Spores

Cited by 24 publications

References 28 publications

Cytological Changes during the Formation of the Endospore in Bacillus megatherium

Cytological Changes during the Formation of the Endospore in Bacillus megatherium

Symposium on the Biology of Bacterial Spores1

The Effect of Heat and Glucose on Endogenous Endospore Respiration Utilizing a Modified Scholander Microrespirometer

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