title: Sugar uptake during early ascosporulation in Saccharomyces cerevisiae.
abstract: The uptake rates of several sugars were examined in cells of Saccharomyces cerevisiae during early ascosporulation. The pH optimum of glucose uptake was about 7 both in the vegetative cells and in the cells after transfer to the sporulation medium. The glucose uptake rate of the cells 3 h after transfer to sporulation medium was about two-fold higher than that of vegetative cells. Uptake rates of glucose, mannose, and galactose increased during the first 3 h and then decreased slightly. The uptake rate of lactose increased throughout the 4 h period of observation, and the uptake rate of 2-deoxy-glucose was constant but at a very low level. Uptake rates of xylose and rhamnose, using the 3,5-dinitrosalicyclic acid method, were below detection levels.
mesh_terms: D003470:Culture Media; D005690:Galactose / Q000378:metabolism; D005947:Glucose / Q000378:metabolism*; D007700:Kinetics; D007785:Lactose / Q000378:metabolism; D008358:Mannose / Q000378:metabolism; D012441:Saccharomyces cerevisiae / Q000378:metabolism* / Q000502:physiology; D013172:Spores, Fungal / Q000378:metabolism
chemical_list: D003470:Culture Media; D005947:Glucose; D007785:Lactose; D008358:Mannose; D005690:Galactose