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OfflineMycoBotanisaceae
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Difference between heterokaryotic,dikaryotic?
    #24028926 - 01/21/17 06:49 PM (7 years, 1 month ago)

Hey guys,

The subject pretty much explains it, I'm currently learning about mushrooms and reading up on the science of them and etc. I have a couple botany books that have a "Fungi" section. Once the chapter talks about dikaryotic and heterokaryotic in the reproduction part I get confused. Not sure If I'm missing any other "yotics" but anyways just trying to understand the differences.

Thanks

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Offlineleschampignons
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Re: Difference between heterokaryotic,dikaryotic? [Re: MycoBotanisaceae]
    #24029337 - 01/21/17 10:46 PM (7 years, 1 month ago)

"A heterokaryon is a fungal cell which has two or more genetically-distinct but allelically-compatible nuclei, as suggested by this resource, as well as this Wikipedia article. A dikaryon is a fungal cell which has precisely two genetically-distinct but allelically-compatible nuclei, as shown here and here."

source


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OfflineRealityCzech
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Re: Difference between heterokaryotic,dikaryotic? [Re: leschampignons]
    #24039570 - 01/25/17 07:01 PM (7 years, 1 month ago)

You are missing monokaryons.  These are fungal cells with a single nucleus.  Two monokaryons fuse to form a dikaryon.

Even mycelium needs sex!

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OfflinePezam
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Re: Difference between heterokaryotic,dikaryotic? [Re: RealityCzech]
    #24039951 - 01/25/17 10:03 PM (7 years, 1 month ago)

I think that you might not understand dikaryions?


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OfflineRealityCzech
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Re: Difference between heterokaryotic,dikaryotic? [Re: Pezam]
    #24040866 - 01/26/17 10:20 AM (7 years, 1 month ago)

Quote:

Pezam said:
I think that you might not understand dikaryions?




As a simplified explanation...

Two monokaryons undergo plasmogamy wherein the cytoplasm of the two distinct monokaryotic cells merge without merging the nuclei - producing a dikaryon.  The mycelium then continues to grow in the dikaryotic state until fruiting bodies produce spores.  At this point karyogamy takes place, fusing the two nuclei, and finally meiosis takes place to produce monokaryotic spore.  This is, by definition, sexual reproduction... even if it is not exactly the same haploid/diploid method we use.

Am I misunderstanding this?
----------------------------------------
EDIT:  I just now realized you might mean the OP.  In which case, please feel free to ignore me.

Edited by RealityCzech (01/26/17 10:24 AM)

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InvisiblebodhisattaMDiscordReddit
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Re: Difference between heterokaryotic,dikaryotic? [Re: RealityCzech]
    #24046072 - 01/28/17 10:08 AM (7 years, 1 month ago)

Dikaryotic is two separate nucleus.
It's only diploid after karyogamy to produce spores.
Then haploid in monokaryotic mycelium
Then dikaryotic (not diploid) for a strain to form and make the mycelium we think of when we think of mycelium.
Karyogamy happens in the spore production apparatus and then the diploid cells are formed

Not very similar to much other organisms


Also they're homothallic since two spores from the same mushroom can make a new fertile offspring.

There's an A and a B mating type so they're bifactorial


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OfflinePezam
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Re: Difference between heterokaryotic,dikaryotic? [Re: bodhisatta]
    #24046676 - 01/28/17 02:59 PM (7 years, 1 month ago)

Quote:

bodhisatta said:
Dikaryotic is two separate nucleus.
It's only diploid after karyogamy to produce spores.
Then haploid in monokaryotic mycelium
Then dikaryotic (not diploid) for a strain to form and make the mycelium we think of when we think of mycelium.
Karyogamy happens in the spore production apparatus and then the diploid cells are formed

Not very similar to much other organisms


Also they're homothallic since two spores from the same mushroom can make a new fertile offspring.

There's an A and a B mating type so they're bifactorial



Well said.


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