SUMMARY: , strain Fty-1, myxamoebae were harvested from the stationary phase and dispensed in small population samples on washed agar. Total cell counts were made at intervals between deposition and fruit construction. Within an uncertainty level of 2·5 %, the data indicate that the populations remained constant and the terminal fruits contained the same number of cells as had formed the aggregates. Subsidiary evidence based on viability determinations and the known morphology of moribund cells suggested that new cells did not arise nor old cells die.

When myxamoebae were harvested from the log phase while still feeding on a high density of bacteria, a substantial degree of cell division did occur during morphogenesis. But the increase in cell number of myxamoebae which had not aggregated corresponded approximately, with that of myxamoebae which had aggregated and fruited. Consequently such increases appear to be coincidental with and not causally related to the morphogenetic sequence.


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