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socraticd
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Registered: 08/06/13
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a question on fungal genetics
#20587559 - 09/19/14 09:36 AM (9 years, 4 months ago) |
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So, I obviously have some learning to do, but one thing struck me as I have been looking at isolating cultures from wild clones lately.
Once we isolate sectors down to moncultures, we in theory have "one set of genetics" in play.
Given this, once that culture is brought to fruit, would those spores not "breed true" to the parent culture, with very little genetic variability?
I ask because typically we talk about not going back to spore from edibles because of the risk of any MS pairing potentially being a poor fruiter, slow colonizer, or any other number of undesirable traits...
What am.I missing about mushroom genetics that should be fairly obvious to someone with a bit more knowledge about the fungal life cycle?
Right now my best guess is that since genetic material contained in spores (being similar to spend or egg production) is only a portion of the complete set found in a functioning organism, MS pairings could allow different combinations of recessive and dominant genes to appear, changing the outward behavior of the resulting progeny?
I need to go back to bio school...
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omegafaust
mycofarmer



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Re: a question on fungal genetics [Re: socraticd] 1
#20587595 - 09/19/14 09:45 AM (9 years, 4 months ago) |
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I think you hit the nail on the head with that last bit.
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socraticd
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Re: a question on fungal genetics [Re: omegafaust]
#20587774 - 09/19/14 10:34 AM (9 years, 4 months ago) |
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That's my suspicion, but my biology is SUPER rusty having been a software engineer for the last decade and a half and really not diving back into bio studies until recently...
I also very much.more focused on and understood the plant and animal kingdoms back then. Fungi were always black magic voodoo.
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Mrcloudy
Stranger than you.


Registered: 10/01/13
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Re: a question on fungal genetics [Re: omegafaust]
#20587785 - 09/19/14 10:36 AM (9 years, 4 months ago) |
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I do not understand fungal genetics yet. I know that there is an insane number of variables from spore. And that DNA sequencing even has a hard time distinguishing one species (at least in certain genus) from the next because their DNA is so complex.
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forrest



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Re: a question on fungal genetics [Re: Mrcloudy]
#20588374 - 09/19/14 12:51 PM (9 years, 4 months ago) |
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i'm in my first year studying applied biology, and the teachers made the mistake of calling fungi a subgroup of plants.... ai...
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Edited by forrest (09/19/14 01:13 PM)
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Alan Rockefeller
Mycologist

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Re: a question on fungal genetics [Re: socraticd]
#20588403 - 09/19/14 12:58 PM (9 years, 4 months ago) |
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Quote:
socraticd said: Given this, once that culture is brought to fruit, would those spores not "breed true" to the parent culture, with very little genetic variability?
No.
You'll have less genetic variety than two spores from different parts of the world pairing, but you'll still have a lot of possible outcomes.
Much like how siblings are similar, but still very different.
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socraticd
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Yeah, this is where I'm thinking, I just need to study up some on the specifics.
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PussyFart
Retired Cultivation Extrodinaire



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Re: a question on fungal genetics [Re: socraticd]
#20591716 - 09/20/14 06:04 AM (9 years, 4 months ago) |
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Quote:
socraticd said: So, I obviously have some learning to do, but one thing struck me as I have been looking at isolating cultures from wild clones lately.
Once we isolate sectors down to moncultures, we in theory have "one set of genetics" in play.
Given this, once that culture is brought to fruit, would those spores not "breed true" to the parent culture, with very little genetic variability?
No, the spores would have very little, if anything in common with the parent genetically....spores are like starting over fresh.
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THIS HOBBY IS NOT FOR THE IMPATIENT! PLEASE BE PATIENT, DON'T BE A PATIENT! A Tale of 10 Isolates, GT Cluster Clone Monotubs, RR's Let's Grow Mushrooms DVD, SGFC(Shotgun Fruiting Chamber), Monotub Tek, Damion5050's Coir Tek, TL's Tek List, Frank's Tek List, EvilMushroom666's Pasteurization Tek, How It Should & Shouldn't Look - NEW CULTIVATORS GUIDE *** *** AFGHAN KUSH GROW LOG *** ***
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tchyted
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Re: a question on fungal genetics [Re: PussyFart]
#20597521 - 09/21/14 03:15 PM (9 years, 4 months ago) |
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there are a number of reasons that spores do not exactly replicate the genetics of the parent. there are advantages and disadvantages.
there is always the possibility of having latent recessive genes come out. this possibility increases exponentially with each successive inbreeding.
depending on species, mushroom spores develop in pairs or in quads they are often genetic mirror images of one another, but they are not the same.
given that, if we are selecting for only one gene out of hundreds, maybe thousands, we have a one out of two or four possibility that two adjacent developing spores will have the same exact gene. given that, you have a one out of four or sixteen chance that two spores from the parent mated at random will have the same gene, and will match the parent. that is only for one gene.
Edited by tchyted (09/21/14 03:19 PM)
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