Synchronous plasma membrane electrochemical potential oscillations during yeast colony development and aging.
2009
Abstract
The membrane potential oscillated at frequencies between those for circadian to infradian rhythms during Saccharomyces cerevisiae colony aging and transiently decreased at timepoints previously linked with yeast metabolism rebuilding. Despite extensive decreases in the ATP concentration and in H+-ATPase Pma1p amount and activity during nutrient limited growth and colony aging, the transmembrane electrochemical potential is maintained above a level critical for population survival.