> Well can simple media like PDA help me in growing yeasts? Or do I need
> some supplements?
Yeast can grow on a number of different media. The one I think most
people use is called YPD:
20 g/l peptone
10 g/l yeast extract
2 % dextrose
pH should be ~5.8
For plates, add agar before autoclaving. It is also a good idea to have
a dextrose stock solution which has been sterilized by filtration and
add the dextrose after autoclaving (and some cooling).
Supplements may be needed if your yeast strain has special needs.
BTW: Clontech has a nice manual available online (Yeast Protocols
Handbook):
http://www.clontech.com/clontech/techinfo/manuals/PDF/PT3024-1.pdf
> How do I prevent bacterial infections on my yeast?
Use sterile technique.
cu
Philipp

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Dr. Philipp Pagel Tel. +49-8161-71 2131
Dept. of Genome Oriented Bioinformatics Fax. +49-8161-71 2186
Technical University of Munich
http://mips.gsf.de/staff/pagel