A Study of Physiological and Morphological Changes in Sporulating Cells of Saccharymyces cerevisiae

Abstract

<p>An aeration technique is described which gave high and consistent yield of yeast spores.</p> <p>Nuclear structures and divisions were studied in both vegetative and sporulating cells. The variation in glycogen and fat content of such cells was followed. These features of internal morphology are described and illustrated by five plates of figures.</p> <p>A comparison was made if the respiration of vegetative and sporulating cells in the presence and absence of substrate.</p> <p>Attempts were made to detect dipicolinic acid (pyridine-2,6-dicarboxylic acid) in yeast spores but no positive results were obtained. The comparative physiological significance of this is discussed.</p> <p> Correlations are made of certain physiological and cytological changes observed during the sporulation process.</p>