Electron Microscopy of Ultrathin Sections of
            <i>Sporosarcina ureae</i>

Mazanec, Karel; Kocur, M.; Martinec, T.

doi:10.1128/jb.90.3.808-816.1965

Cited by 22 publications

(5 citation statements)

References 12 publications

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“…Much attention has been focused on the taxonomic status of the flagellated, sporeforming S. ureae. It was found that this bacterium forms true endospores, inasmuch as they are heat resistant (10,33,51,58), contain dipicolinic acid (85), and are ultrastructurally similar to spores of Bacillus species (62). Furthermore, the guanine + cytosine (GC) content in the deoxyribonucleic acid (DNA) of S. ureae differs greatly from that of aerobic, nonsporeforming sarcinae (Table 2).…”

Section: Taxonomy Of Packet-forming Coccimentioning

confidence: 99%

Biology of the sugar-fermenting Sarcinae.

Canale-Parola¹

1970

Bacteriological Reviews

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Section: Taxonomy Of Packet-forming Coccimentioning

confidence: 99%

Biology of the sugar-fermenting Sarcinae.

Canale-Parola¹

1970

Bacteriological Reviews

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“…Endospores occur most commonly in rod-shaped bacteria ( Fig. 1), but also appear in filamentous cells and in cocci (7)(8)(9)(10)(11). Many endospores have been observed only in samples from nature.…”

Section: An Introduction To Endospore Formationmentioning

confidence: 99%

Sporulation in Bacteria: Beyond the Standard Model

Hutchison

Miller²,

Angert

2014

Microbiol Spectr

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Endospore formation follows a complex, highly regulated developmental pathway that occurs in a broad range of Firmicutes. Although Bacillus subtilis has served as a powerful model system to study the morphological, biochemical, and genetic determinants of sporulation, fundamental aspects of the program remain mysterious for other genera. For example, it is entirely unknown how most lineages within the Firmicutes regulate entry into sporulation. Additionally, little is known about how the sporulation pathway has evolved novel spore forms and reproductive schemes. Here, we describe endospore and internal offspring development in diverse Firmicutes and outline progress in characterizing these programs. Moreover, comparative genomics studies are identifying highly conserved sporulation genes, and predictions of sporulation potential in new isolates and uncultured bacteria can be made from these data. One surprising outcome of these comparative studies is that core regulatory and some structural aspects of the program appear to be universally conserved. This suggests that a robust and sophisticated developmental framework was already in place in the last common ancestor of all extant Firmicutes that produce internal offspring or endospores. The study of sporulation in model systems beyond B. subtilis will continue to provide key information on the flexibility of the program and provide insights into how changes in this developmental course may confer advantages to cells in diverse environments.

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“…Similar to Bacillus spores in shape, size, and morphology, the spores of S. ureae are composed of an outer coat of several layers, a cortex, a spore wall, and cytoplasm (16). S. ureae spores are also similar to the spores of bacilli in their degree of heat resistance, and contain dipicolinic acid in amounts ranging from 4 to 7 ,, of the spore dry weight (21).…”

mentioning

confidence: 99%

Genetic Relationship Between Sarcina ureae and Members of the Genus Bacillus

Herndon

Bott

1969

J Bacteriol

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Deoxyribonucleic acid-ribonucleic acid (DNA-RNA) and DNA-DNA hybridization studies were performed to determine the degree of genetic relatedness between Sarcina ureae and several members of the genus Bacillus. DNA-RNA hybridization showed a high degree of homology between S. ureae RNA and DNA from Bacillus species having a similar guanine plus cytosine content. The DNA from other genera of the family Micrococcaceae showed less homology with S. ureae RNA than did that of the Bacillus species tested; however, this homology was not found between the DNA of S. ureae and DNA from these Bacillus species or DNA from the other Micrococcaceae tested. Transformation with Bacillus DNA, infection with representatives from several major classes of Bacillus phages, and electrophoretic analysis of proteins in crude extracts of these strains were also attempted as a further test of the genetic relationship between the genera. These experiments did not support the belief that the two groups are closely related genetically.

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Electron Microscopy of Ultrathin Sections of Sporosarcina ureae

Cited by 22 publications

References 12 publications

Biology of the sugar-fermenting Sarcinae.

Biology of the sugar-fermenting Sarcinae.

Sporulation in Bacteria: Beyond the Standard Model

Genetic Relationship Between Sarcina ureae and Members of the Genus Bacillus

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