The dependence on temperature of thermal death, growth and yield ofCandida tropicalis

Kluyveromyces fragilis SS-437: an associatively-profiled thermotolerant yeast

The lactose-utilizing Kluyveromyces fragilis SS-437 was found to have an associative temperature profile, but a thermotolerant growth yield behaviour. Cardinal growth temperatures were: 3 degrees C minimum for growth; 41.5 degrees C optimum; 44.5 degrees C final maximum (growth and death rates equalize); 46.1 degrees C initial maximum (maximum limit for growth).

Comparative study of the temperature profiles of growth and death of the pathogenic yeast Cryptococcus neoformans and the non-pathogenic Cryptococcus albidus

The temperature profiles of two species of Cryptococcus were compared. The pathogenic Cr. neoformans had a maximum temperature for growth of 39.8 degrees C and the non-pathogenic Cr. albidus, of 30.2 degrees C. The specific growth rates measured in the former were of an order of magnitude higher than in the latter, whereas the Arrhenius plots of the specific thermal death rates did not show a significant difference.

The effect of 5-fluorocytosine on the temperature profile of Candida albicans

The temperature association of exponential thermal death with exponential growth, observed in a strain of Candida albicans, was disrupted by 5-fluorocytosine which, at a concentration of 2 micrograms ml-1, shifted the maximum temperature for growth from 38 degrees C to 33 degrees C but did not affect thermal death.