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Constructing Mutants in Serotype 1 Streptococcus pneumoniae strain 519/43
Published on: September 11, 2020
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[New structural components detected in B. pertussis of different serotypes]
Zhurnal Mikrobiologii, Epidemiologii I Immunobiologii
|May 1, 1976
Summary
Electron microscopy revealed unique intracellular structures in Gram-negative bacteria, irrespective of serological type. These crystal-like formations caused significant cell alterations, including membrane detachment and cytoplasm contraction.
Area of Science:
- Microbiology
- Bacteriology
- Cell Biology
Background:
- Gram-negative bacteria exhibit diverse morphologies.
- Understanding bacterial ultrastructure is key to classification and function.
Purpose of the Study:
- To investigate the morphological peculiarities of various bacterial strains using electron microscopy.
- To identify and characterize unique intracellular structures within these strains.
Main Methods:
- Electron microscopy was employed to examine bacterial strains.
- Morphological analysis focused on intracellular membranes and structures.
Main Results:
- All studied strains displayed characteristics of Gram-negative bacteria.
- Intracellular membranes and crystal-like structures were observed in specific strains (No. 222, No. gZ353, No. 475), independent of serological type.
- The formation dynamics of these crystal-like structures were documented, revealing significant cellular changes such as cytoplasmic membrane detachment, cytoplasm contraction, and periplastic space formation.
Conclusions:
- The presence of intracellular crystal-like structures is a notable morphological feature in certain Gram-negative bacteria.
- These structures induce distinct cellular rearrangements, impacting bacterial cell integrity.
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