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Emma-Lou
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Registered: 11/14/12
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Last seen: 11 years, 3 months
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Carbon requirements of WRF: Mycellial growth Vs fruiting
#17607556 - 01/25/13 07:46 AM (11 years, 3 months ago) |
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Hello there,
I'm just wondering if anyone knows if there is a significant increase in the amount of carbon needed during the fruiting phase of pleurotus ostreatus compared to mycellial growth at all? I've come to a part of my research re. the degradation of PAH by WRF where I need to outline why I'm looking at the difference in breakdown of PAH between fruiting phase and mycellial growth and I'm finding it difficult to extract this info from papers and textbooks!
Any info would be gratefull recieved and at least help point me in the right directions!
Many thanks Emma-Lou
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Little Miss Mycologist
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laughingsol
Dirt Farmer


Registered: 01/01/12
Posts: 389
Loc: The beautiful hills of Io...
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Re: Carbon requirements of WRF: Mycellial growth Vs fruiting [Re: Emma-Lou]
#17610089 - 01/25/13 04:54 PM (11 years, 3 months ago) |
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Quote:
Emma-Lou said: I'm just wondering if anyone knows if there is a significant increase in the amount of carbon needed during the fruiting phase of pleurotus ostreatus compared to mycellial growth at all?
Carbon needed for..?? I think most fungi store metabolized carbon for use during fruitbody formation. So I don't think you'd see a spike in the amount of carbon metabolized from the substrate, if that's what you're asking.
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Emma-Lou
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Registered: 11/14/12
Posts: 8
Last seen: 11 years, 3 months
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Re: Carbon requirements of WRF: Mycellial growth Vs fruiting [Re: laughingsol]
#17618676 - 01/27/13 12:02 PM (11 years, 3 months ago) |
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Thats pretty much exactly what I was asking... thanks! I'd come across similar info while doing some reading today but its great that you've summed it up in one sentence Many thanks!
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Little Miss Mycologist
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Emma-Lou
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Registered: 11/14/12
Posts: 8
Last seen: 11 years, 3 months
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Re: Carbon requirements of WRF: Mycellial growth Vs fruiting [Re: Emma-Lou]
#17619443 - 01/27/13 02:56 PM (11 years, 3 months ago) |
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Hmm, ok, I've been doing some reading but I'm not 100% sure if I'm getting the right end of the stick... From my reading I've gathered that... The shift in trophic state from mycelia expansion to fruiting is known as differentiation. During mycelial growth the fungi stores excess polysaccharides, revealed during the cleaving of covalent lignin cell bonds, as glycogen or lipids. As carbon in the substrate begins to deplete, glycogen and lipid carbon reserves are converted back to sugars and used to nourish developing primordial nodes that will grow into fruiting bodies. As carbon reserves then run low within the hyphae, the hyphal walls begin to degenerate and these high sugar break-down products are also transported to the primordia.
But what about other triggers such as light? I'm using blue-grey oyster mushrooms in my study and when I grew the pilot kits to makes sure I had fungal-fingers they started creating primordia and small mushrooms in the dark cupboard I was keeping them in.
So, would it be the depleting carbon (lignin) that is the trigger to start creating primordia?
Any info would be great, this is a whole new world to me!
Many thanks Emma-Lou
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Little Miss Mycologist
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laughingsol
Dirt Farmer


Registered: 01/01/12
Posts: 389
Loc: The beautiful hills of Io...
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Re: Carbon requirements of WRF: Mycellial growth Vs fruiting [Re: Emma-Lou]
#17619804 - 01/27/13 04:37 PM (11 years, 3 months ago) |
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The depletion of nutrients is definitely one trigger for primordia formation. But there are others. For a comprehensive review of the scientific research available on this subject, I suggest Fungal Morphogenesis by David Moore- if you can get your hands on it.
Light can be a trigger for primordia formation as well, but for some species all that is needed is a few milliseconds of the proper wavelength light to start the process. For many species, additional light is required at other stages of development.
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Emma-Lou
Stranger
Registered: 11/14/12
Posts: 8
Last seen: 11 years, 3 months
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Re: Carbon requirements of WRF: Mycellial growth Vs fruiting [Re: laughingsol]
#17622127 - 01/28/13 02:42 AM (11 years, 3 months ago) |
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Thank you very much laughingsol, I've just checked my uni's library holdings and there is a copy of Davids book on the shelf! Safe to say I'll head there in a few moments.
Thanks again, Emma-Lou
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Little Miss Mycologist
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