Samples can be stored in RNAlater solution which is usually used for RNA isolation. But it also works for DNA isolation

Hi Anna,

It should be safe for DNA extraction later, if you freeze fungal mycelium in liquid nitrogen and store it at -80oC.

Good luck.

Hi Anna: I have work with frozen fungal mycelia, sometime I don't have time to do DNA extraction directly after harvesting mycelium, so I use to store it in freezer -18C for more than 2 week before I do the extraction .  

Thank you for all the answers