Peritrichous flagellation in Plesiomonas shigelloides strains

Area of Science:

• Microbiology
• Bacteriology

Background:

• Plesiomonas shigelloides is an opportunistic pathogen found in various aquatic environments.
• Bacterial flagella play crucial roles in motility and host interaction.
• Characterizing flagellar arrangements is important for understanding bacterial behavior.

Purpose of the Study:

• To investigate the presence and characteristics of peritrichous flagella in Plesiomonas shigelloides strains.
• To differentiate peritrichous flagella from lophotrichous flagella using microscopy.

Main Methods:

• Isolation and culture of 131 Plesiomonas shigelloides strains from diverse sources.
• Application of flagella staining techniques to detect flagellar presence.
• Utilizing electron microscopy for high-resolution visualization and characterization of flagella.

Main Results:

• Peritrichous flagella were identified in 89 (68%) of the tested Plesiomonas shigelloides strains.
• Optimal conditions for demonstrating peritrichous flagella included incubation on solid medium for 18 hours at 25°C.
• Electron microscopy confirmed the distinct morphology, specifically the wavelength, of peritrichous flagella compared to lophotrichous ones.

Conclusions:

• A significant proportion of Plesiomonas shigelloides strains exhibit peritrichous flagellation.
• Flagella staining and electron microscopy are effective methods for identifying and distinguishing bacterial flagellar arrangements.
• Understanding the flagellar apparatus of Plesiomonas shigelloides can contribute to knowledge of its pathogenicity and environmental adaptation.