UKTC Archive

RE: Ganoderma applanatum/australe on n.maple - implications

Subject: RE: Ganoderma applanatum/australe on n.maple - implications
From: David Evans
Date: Dec 23 2011 11:56:20
Hi Gerrit

<<1) A biotrophic parasitic macrofungus extracts its nutrients/energy from 
living parts/tissue/cells of a plant or tree, it can't live on - and 
especially not reproduce or fruit from - dead wood/tissue alone.>>

1) In your definition does this kind of fungus kill the living cells in the 
process of extracting it nutrients, like a necrotroph, or do they remain 
alive, like a biotroph?, or both, like a hemibiotroph?

<<2) In my definition of being a biotrophic parasite, G. australe differs 
from G. lipsiense in that G. australe panic fruits with (partially) sterile 
lumpy FB's just before or shortly after the tree dies, where G. lipsiense 
keeps on developing normal FB's until long after the tree (beech) dies.>>

2) I'll add my reply to this on a separate thread, where I'd like to discuss 
this 'panic fruiting' you speak of.

<<3) Apart from the "famous" Anne Frank tree, I have lots of documentation on 
the detrimental effects of G. australe on the stability of Acer 
(saccharinum), Aesculus, Tilia, Populus, Salix and Quercus rubra on the 
continent, which is in contrast with the far less detrimental effects on 
tannin (and thyll) rich wood of Quercus robur, Q. petrea and Castanea sativa, 
on which Fistulina hepatica specialises as part of the tree species specific 
ecosystem (© G.J. Keizer (2012), De verborgen boom (= The hidden tree)) and 
the life cycles of these tree species.>>

3) That wasn't the question I was asking because I don't dispute that many 
decay fungi can affect the stability of trees detrimentally, so I'll try to 
rephrase it.  Are you saying you have evidence that G. adspersum/australe can 
readily breach the reaction zone and/or boundary zone of functional xylem and 
then colonise that wood in a tree with good vitality?


Acer ventura

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