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Offlinekrypto2000
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What does the F-XXX number signify in culture/strain naming?
    #23871365 - 11/27/16 08:49 AM (7 years, 2 months ago)

I'm specifically referencing claviceps strains, or in other words that's what spurred the question, but I've seen it used elsewhere. For instance the steven and hall F-550 strain. In plants it designates the generation. The first is F1, it seeds, then those seeds would be F2. Right? Is it the same for fungi/bacteria? Does F-550 mean they made 550 transfers? That's all I can figure, but that is an insane amount of transfers, I'd think senescence would take hold by that point.


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Offlineleschampignons
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Re: What does the F-XXX number signify in culture/strain naming? [Re: krypto2000]
    #23871386 - 11/27/16 09:01 AM (7 years, 2 months ago)

A transfer isn't a generation, so the fungus would have to go through 550 cycles sexual reproduction to be F550. typically in F notation the numbers next to the F are written in subscript without a dash, so I think it's pretty safe to say this is just a strain name and is unrelated to this notation. It really could be anything. Maybe someone first isolated it on a friday at 550pm or maybe it was the 550th agar plate that was poured by some guy named frank lol


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Offlinekrypto2000
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Re: What does the F-XXX number signify in culture/strain naming? [Re: leschampignons]
    #23871402 - 11/27/16 09:08 AM (7 years, 2 months ago)

That makes sense. I have seen other claviceps naming schemes too such as MG-6 or something like that, so it probably is nothing standardized. They definitely did not go to sporulation 550 times, I don't think they even did it once.


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InvisibleMad Season
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Re: What does the F-XXX number signify in culture/strain naming? [Re: krypto2000]
    #23871413 - 11/27/16 09:13 AM (7 years, 2 months ago)

The F-550 is used generally by commercial companies because it can carry 2 tons on the bed and has a 16000 lb towing capacity :lol:


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Offlineleschampignons
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Re: What does the F-XXX number signify in culture/strain naming? [Re: krypto2000]
    #23871456 - 11/27/16 09:35 AM (7 years, 2 months ago)

I wrote sexual reproduction above, but some other fungi (i.e. not Claviceps) are not known to reproduce sexually, so I'm not sure if they consider the production of asexual spores a generation or not. I think this notation just isn't used for these species, because an F1 implies two parents, but I'm not sure


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InvisibleMad Season
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Re: What does the F-XXX number signify in culture/strain naming? [Re: leschampignons]
    #23871470 - 11/27/16 09:41 AM (7 years, 2 months ago)

Dikaroytic mycelium germination can be seen as F1/F2, etc. It's 2 different genetics (monokaryotic mycelium) combining to make cells with 2 nuclei instead of 1.


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InvisiblePastywhyteMDiscord
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Re: What does the F-XXX number signify in culture/strain naming? [Re: Mad Season]
    #23871475 - 11/27/16 09:43 AM (7 years, 2 months ago)

Lower or imperfect fungi reproduce asexually, higher fungi do not.


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Invisibler.lutece
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Re: What does the F-XXX number signify in culture/strain naming? [Re: Mad Season]
    #23871488 - 11/27/16 09:48 AM (7 years, 2 months ago)

Quote:

Mad Season said:
The F-550 is used generally by commercial companies because it can carry 2 tons on the bed and has a 16000 lb towing capacity :lol:




:innocentjoy:


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Offlinekrypto2000
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Re: What does the F-XXX number signify in culture/strain naming? [Re: Mad Season]
    #23871746 - 11/27/16 11:26 AM (7 years, 2 months ago)

Quote:

Mad Season said:
The F-550 is used generally by commercial companies because it can carry 2 tons on the bed and has a 16000 lb towing capacity :lol:




That explains it.


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