Prototheca spec. differentiation 

 

Feature P. wickerhamii P. zopfii P. blaschkeae P. stagnora P. ulmea
Shape of colony hemispheric, smoothly with smooth margin flat, roughly, with central button and corrugated margin flat, smoothly, with central button and corrugated margin flat, smoothly with smooth margin  
Diameter of cells 4 - 10 7 - 30   7 14  
Assimilation of Glycerol + + - +  
Succrose - -   +  
Trehalose + - - -  
n-Propanole - +   -  
Arginine + + - +  
Growth at 37C + + + -  
forming of mucous capsule - - - +  

 

 Differentiation of genotypes (biotypes) within Prototheca zopfii