spores was subcultured from established Fusarium oxysporum petri dishes which was of a purple colour but now all the new dishes the colour is a deep pink. of the twenty dishes i made. 16 is this deep pink colour and four dishes remained white. both the source dishes and the new dishes contains half strenght PDA. is it possible that PDA of different brands can make the subcultures of the same source turn different colours?
Hi Shaheed, Its possible the culture is mutate, this is a common problem with sub-culturing more than one time in Fusarium spp.
it is a genetic variability: if you take 100 monospores of Fusarium you cultivate each one in a petri dishes you will have thalli of different colors from white to pink, stern and even yellow, according to the abundance of pigment synthesized
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