I have a whole bunch of prints of pan that are a few years old that I want to rehydrate, any suggestions. I've already streaked a dish with some but they seemed pretty dry and I thought I'd try to hydrate some too. Thanks for any help.

Rehydrating old spores
#1
Posted 05 April 2021 - 07:04 PM
#2
Posted 05 April 2021 - 07:11 PM
Make yourself a spore syringe, let it rest a day or two, then use it as usual. I recently germinated 9.5yr old spores without doing anything other than putting them to agar. They just took a long time to show signs of life. If the spores are rehydrated first germination should be a fair deal faster.
Ensure you use filtered, sterilized water. Good luck!
- stackedandeasy likes this
#3
Posted 06 April 2021 - 04:26 AM
I'm rehydrating 4-year-old Cubensis spores in filtered, sterilized water. I'm planning on giving them a week and then doing a single PF jar for each variety to test for viability and cleanliness. It's the first time I've attempted it, so fingers crossed.
Edited by Sidestreet, 06 April 2021 - 04:26 AM.
- stackedandeasy likes this
#4
Posted 06 April 2021 - 01:33 PM
Sterilize water then scrape some spores into it and draw them back into a syringe then inoculate the agar? I thought about just adding a few drops of sterile water to the print and cover it for 24 hours, would that not work?
#5
Posted 06 April 2021 - 03:04 PM
I also had two liquid cultures that has been sitting for three years, I thought the bigger one might have a bacteria but now I'm not sure, I pulled from both of them and inoculated a couple of dishes with the browner one, I'm thinking of inoculating a few of the dishes with the lighter one today. I just sterilized some water to make a syringe.
#7
Posted 06 April 2021 - 05:39 PM
Sterilize water then scrape some spores into it and draw them back into a syringe then inoculate the agar? I thought about just adding a few drops of sterile water to the print and cover it for 24 hours, would that not work?
I PCd some water in a pint jar with a SHIP lid on it, and also a syringe. Under sterile conditions, I drew a syringe full of water and then shot it into the button bag containing the spore print. I agitated the button bag with the print and water until the water was purple. Then I drew it back into the syringe and shot that back into the pint jar with the rest of the water.
I suppose I could have shot the water into the spore print bag and let it sit there for 24 hours, but this way it's done all at once and I have a bunch of spore water ready to go.
Good luck with your liquid cultures!
- stackedandeasy likes this
#8
Posted 08 April 2021 - 03:05 PM
Yeah my liquid culture isn't contaminated! I just started a batch of rye soaking and I'm going to inoculate it with the liquid culture plus I'm going to make a new one using new agar plates. The spores haven't started yet but it's only been a few days. I'll keep my you updated on how it's all coming up, geeze I love fresh pan for the summer!
- Sidestreet and Auhron like this
#9
Posted 09 April 2021 - 08:27 PM
Dishes look awesome for just a few days old, I started cutting a few wedges out of one of them and inoculated another dish with the other liquid culture to see if it's good, I thought it may have a bacteria because the water looked cloudy but it settled and looked pretty clear so we shall see. I sterilized a few jars of rye and inoculated them with the liquid culture. I may start a new thread with pan grow as the topic.
- Sidestreet and jrh like this