A modification of Fontana's silver-plating method was devised and used for the cytological study of 214 isolates of spp. Many features, such as flagella, cross-walls or septa, capsules and slime were thereby clearly demonstrated simultaneously and easily. Comparisons were made with other published methods for staining flagella, capsules and slime, and good agreement was obtained. No totally non-flagellate isolate was found, nor were flagella lost during maintenance for 3-5 1/2 years in the laboratory. The number of flagella/rod and also bipolar flagellation were found to be characters of little value for species differentiation. The flagellation of young cultures was not found to be significantly different from that observed in older cultures; the polar position of the flagella was confirmed. Flagella curvature (wavelength and amplitude) as seen in silver-plated organisms prepared under reasonably standardized conditions, was noted and considered to have no usefulness for subgeneric classification.


Article metrics loading...

Loading full text...

Full text loading...


Most cited this month Most Cited RSS feed

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error