SUMMARY: Hybridization experiments were carried out between strains of the myxomycete which differed in their sensitivities to the cations Na, K, Mg and Ca as determined by the threshold for changes in membrane potential on application of these ions. The sensitivities were explicable on the basis of control by three genes ( and ) for monovalent cations, magnesium and calcium, respectively, with low sensitivity dominant. Departures from the expected ratios for three unlinked loci are explicable by high sensitivity for divalent cations reducing viability, but the additional possibility that high divalent cation sensitivity cannot be expressed in the presence of low monovalent cation sensitivity has not been excluded. Chemotactic thresholds corresponded with membrane potential thresholds.


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