Difference between revisions of "PMID:1689718"
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+ | {| id="Q5057583eb9439" class=" tableEdit PMID_info_table" | ||
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+ | |- | ||
+ | !align=left |Citation | ||
+ | || | ||
+ | '''Beveridge, TJ ''' (1990) Mechanism of gram variability in select bacteria. ''J. Bacteriol.'' '''172''':1609-20 | ||
+ | |- | ||
+ | !align=left |Abstract | ||
+ | || | ||
+ | Gram stains were performed on strains of Actinomyces bovis, Actinomyces viscosus, Arthrobacter globiformis, Bacillus brevis, Butyrivibrio fibrisolvens, Clostridium tetani, Clostridium thermosaccharolyticum, Corynebacterium parvum, Mycobacterium phlei, and Propionibacterium acnes, using a modified Gram regimen that allowed the staining process to be observed by electron microscopy (J. A. Davies, G. K. Anderson, T. J. Beveridge, and H. C. Clark, J. Bacteriol. 156:837-845, 1983). Furthermore, since a platinum salt replaced the iodine mordant of the Gram stain, energy-dispersive X-ray spectroscopy could evaluate the stain intensity and location by monitoring the platinum signal. These gram-variable bacteria could be split into two groups on the basis of their staining responses. In the Actinomyces-Arthrobacter-Corynebacterium-Mycobacterium-Propionibacterium group, few cells became gram negative until the exponential growth phase; by mid-exponential phase, 10 to 30% of the cells were gram negative. The cells that became gram negative were a select population of the culture, had initiated septum formation, and were more fragile to the stress of the Gram stain at the division site. As cultures aged to stationary phase, there was a relatively slight increase toward gram negativity (now 15 to 40%) due to the increased lysis of nondividing cells by means of lesions in the side walls; these cells maintained their rod shape but stained gram negative. Those in the Bacillus-Butyrivibrio-Clostridium group also became gram negative as cultures aged but by a separate set of events. These bacteria possessed more complex walls, since they were covered by an S layer. They stained gram positive during lag and the initial exponential growth phases, but as doubling times increased, the wall fabric underlying the S layer became noticeably thinner and diffuse, and the cells became more fragile to the Gram stain. By stationary phase, these cultures were virtually gram negative. | ||
+ | |- | ||
+ | !align=left |Links | ||
+ | || | ||
+ | [http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=1689718 PubMed] [http://www.ncbi.nlm.nih.gov/pmc/articles/PMC208639 PMC208639] | ||
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+ | |- | ||
+ | !align=left |Keywords | ||
+ | || | ||
+ | Bacillus/classification; Bacillus/ultrastructure; Bacteria/classification; Bacteria/cytology; Bacteria/growth & development; Gentian Violet; Microscopy, Electron; Mycobacterium phlei/classification; Mycobacterium phlei/ultrastructure; Phenazines; Propionibacterium/classification; Propionibacterium/ultrastructure; Staining and Labeling | ||
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+ | |} | ||
+ | <!--box uid=d41d8cd98f00b204e9800998ecf8427e.3465.Q5057583eb9439--> | ||
+ | |||
+ | ==Main Points of the Paper == | ||
+ | {{LitSignificance}} | ||
+ | |||
+ | == Materials and Methods Used == | ||
+ | {{LitMaterials}} | ||
+ | |||
+ | ==Phenotype Annotations== | ||
+ | {{AnnotationTableHelp}} | ||
+ | <protect><!--box uid=d41d8cd98f00b204e9800998ecf8427e.3465.Z5057583ecaa35--> | ||
+ | <!-- | ||
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+ | * | ||
+ | * ** PLEASE DON'T EDIT THIS TABLE DIRECTLY. Use the edit table link under the table. ** | ||
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+ | {| id="Z5057583ecaa35" class=" tableEdit Phenotype_Table_2" | ||
+ | |- | ||
+ | !|Phenotype of!!Taxon Information!!Genotype Information (if known)!!Condition Information!!OMP ID!!OMP Term Name!!ECO ID!!ECO Term Name!!Notes!!Status | ||
+ | |||
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+ | |} | ||
+ | <!--box uid=d41d8cd98f00b204e9800998ecf8427e.3465.Z5057583ecaa35--></protect> | ||
+ | |||
+ | ==Notes== | ||
+ | |||
+ | ==References== | ||
+ | {{RefHelp}} | ||
+ | <references/> | ||
+ | |||
+ | |||
+ | [[Category:Publication]] |
Latest revision as of 12:05, 17 September 2012
Citation |
Beveridge, TJ (1990) Mechanism of gram variability in select bacteria. J. Bacteriol. 172:1609-20 |
---|---|
Abstract |
Gram stains were performed on strains of Actinomyces bovis, Actinomyces viscosus, Arthrobacter globiformis, Bacillus brevis, Butyrivibrio fibrisolvens, Clostridium tetani, Clostridium thermosaccharolyticum, Corynebacterium parvum, Mycobacterium phlei, and Propionibacterium acnes, using a modified Gram regimen that allowed the staining process to be observed by electron microscopy (J. A. Davies, G. K. Anderson, T. J. Beveridge, and H. C. Clark, J. Bacteriol. 156:837-845, 1983). Furthermore, since a platinum salt replaced the iodine mordant of the Gram stain, energy-dispersive X-ray spectroscopy could evaluate the stain intensity and location by monitoring the platinum signal. These gram-variable bacteria could be split into two groups on the basis of their staining responses. In the Actinomyces-Arthrobacter-Corynebacterium-Mycobacterium-Propionibacterium group, few cells became gram negative until the exponential growth phase; by mid-exponential phase, 10 to 30% of the cells were gram negative. The cells that became gram negative were a select population of the culture, had initiated septum formation, and were more fragile to the stress of the Gram stain at the division site. As cultures aged to stationary phase, there was a relatively slight increase toward gram negativity (now 15 to 40%) due to the increased lysis of nondividing cells by means of lesions in the side walls; these cells maintained their rod shape but stained gram negative. Those in the Bacillus-Butyrivibrio-Clostridium group also became gram negative as cultures aged but by a separate set of events. These bacteria possessed more complex walls, since they were covered by an S layer. They stained gram positive during lag and the initial exponential growth phases, but as doubling times increased, the wall fabric underlying the S layer became noticeably thinner and diffuse, and the cells became more fragile to the Gram stain. By stationary phase, these cultures were virtually gram negative. |
Links | |
Keywords |
Bacillus/classification; Bacillus/ultrastructure; Bacteria/classification; Bacteria/cytology; Bacteria/growth & development; Gentian Violet; Microscopy, Electron; Mycobacterium phlei/classification; Mycobacterium phlei/ultrastructure; Phenazines; Propionibacterium/classification; Propionibacterium/ultrastructure; Staining and Labeling |
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Main Points of the Paper
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Materials and Methods Used
Please list the materials and methods used in this paper (strains, plasmids, antibodies, etc).
Phenotype Annotations
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<protect>
Phenotype of | Taxon Information | Genotype Information (if known) | Condition Information | OMP ID | OMP Term Name | ECO ID | ECO Term Name | Notes | Status |
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Notes
References
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