Phage maturation in Bacillus mycoicles cells

Tikhonenko, Anna S.; Беспалова, И. А.

doi:10.1016/0042-6822(64)90289-2

Cited by 6 publications

(2 citation statements)

References 6 publications

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“…[50,51,57], where the majority of B. mycoides phages were isolated from soil samples, as for example B. mycoides phage No.1 and N17 [202]. There are several CAM and specific B. mycoides phages reports focused on their morphologies [51,203], tail 3-D reconstruction [204], inactivation and sensitivity [205,206,207,208,209], antigenic relationship [202], defective morphogenesis [210,211] and phage maturation [212]. However, many of these studies were done in the former USSR, a fact that limits their access.…”

Section: What About Phages In Other Members Of the B Cereus Group?mentioning

confidence: 99%

Phages Preying on Bacillus anthracis, Bacillus cereus, and Bacillus thuringiensis: Past, Present and Future

Gillis

Mahillon

2014

Viruses

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Many bacteriophages (phages) have been widely studied due to their major role in virulence evolution of bacterial pathogens. However, less attention has been paid to phages preying on bacteria from the Bacillus cereus group and their contribution to the bacterial genetic pool has been disregarded. Therefore, this review brings together the main information for the B. cereus group phages, from their discovery to their modern biotechnological applications. A special focus is given to phages infecting Bacillus anthracis, B. cereus and Bacillus thuringiensis. These phages belong to the Myoviridae, Siphoviridae, Podoviridae and Tectiviridae families. For the sake of clarity, several phage categories have been made according to significant characteristics such as lifestyles and lysogenic states. The main categories comprise the transducing phages, phages with a chromosomal or plasmidial prophage state, γ-like phages and jumbo-phages. The current genomic characterization of some of these phages is also addressed throughout this work and some promising applications are discussed here.

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Section: What About Phages In Other Members Of the B Cereus Group?mentioning

confidence: 99%

Phages Preying on Bacillus anthracis, Bacillus cereus, and Bacillus thuringiensis: Past, Present and Future

Gillis

Mahillon

2014

Viruses

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“…This process has been mainly investigated w i t h the electron n~icroscope f o r phages attacking G r a mnegative bacteria (5,7,9). However, some aspects of the sequence, particularly intracellular multiplication, have been studied in the following Gram-positive organisms : Bacillzls mycoides (26), B. szlbtilis (20), Clostricliunz pefiingens (21), Mycobacterium fortuitzrnz (22), a n d Streptornyces venezuelae (12).…”

Section: Introductionmentioning

confidence: 99%

Structural changes in cells of Clostridium sporogenes infected with a long-tailed bacteriophage

Hoeniger¹,

Bradley²

1971

Can. J. Microbiol.

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1971. Structural changes in cells of Clostridrum sporogenes infected with a long-tailed bacteriophage. Can. J. Microbiol. 17: 1567-1572.The infective process of phage F l in Clostridium sporogerres has been studied by the electron microscopy of negatively stained preparations and, mainly, of thin sections. The phages adsorbed to the host wall by their tails. The first visible cytological changes accompanying intracellular multiplication were in the nucleoplasm, which became progressively fragmented into smaller units. Phage particles developed within the nuclear regions forming regular arrays of heads. When sectioned longitudinally, the elongated heads occurred in several rows; in transverse section, they were hexagonal and formed "crystalline" aggregates. Lysis occurred gradually, and was caused by the breaking away of portions of the cell envelope (cell wall and plasma membrane). During early lysis the rows of phage heads remained intact, only dispersing with time. The contents, and presumably free phage, leaked out through holes in the cell.Le processus infectieux du phage F1 de Clostridiurn sporogenes a Ct C etudiC au microscope Clectronique, sur des preparations colorCes en negatif et surtout des coupes ultrafines. Les phages se fixent sur la paroi de I'h6te avec leurs queues. Les premiers changements cytologiques qui accompagnent la multiplication intracellulaire, sont visibles dans le nucleoplasme qui est progressivement fragment6 en petites unites. Les particules phagiques se dCveloppent dans la region nucltaire en formant des rangees rCgulieres de tCtes. En sections longitudinales, les tCtes allongees se presentent en plusieurs rangees; en sections transversales, elles paraissent hexagonales et forment des aggrkgats "cristallins". La lyse se fait graduellement par fragmentation de I'enveloppe cellulaire (paroi et membrane cytoplasmique). Au dCbut de la lyse, les rangees de t i t s phagiques restent intactes, tout en se dispersant lentement. Le contenu de la cellule, et probablement des phages libres aussi, passent i travers des trous dans la paroi. IntroductionThe infective process of virrllent bacteriophages takes place i n f o u r successive stages: adsorption t o the host cells, injection o f nucleic acid, intracellular multiplication of phage, a n d release of phage progeny, normally by lysis. This process has been mainly investigated w i t h the electron n~icroscope f o r phages attacking G r a mnegative bacteria (5,7,9). However, some aspects of the sequence, particularly intracellular multiplication, have been studied in the following Gram-positive organisms : Bacillzls mycoides (26), B. szlbtilis (20), Clostricliunz pefiingens (21), Mycobacterium fortuitzrnz (22), a n d Streptornyces venezuelae (12).We a r e particularly interested i n Clostridiutn phages, a n d recently (I I) investigated t h e changes induced in cells of C. pet$-ingetzs 80 b y the shorttailed phage 80. Adsorption was tail-first t o the cell wall, then the nucleoplasm became dispersed and small clear areas, t h o u g h t to be D...

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Intracellular development of a large DNA bacteriophage lytic for Caulobacter crescentus

1967

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Phage maturation in Bacillus mycoicles cells

Cited by 6 publications

References 6 publications

Phages Preying on Bacillus anthracis, Bacillus cereus, and Bacillus thuringiensis: Past, Present and Future

Phages Preying on Bacillus anthracis, Bacillus cereus, and Bacillus thuringiensis: Past, Present and Future

Structural changes in cells of Clostridium sporogenes infected with a long-tailed bacteriophage

Intracellular development of a large DNA bacteriophage lytic for Caulobacter crescentus

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