UKTC Archive

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

Subject: Re: Ganoderma applanatum/australe on n.maple - implications
From: Martyn Dickson
Date: Dec 31 2011 20:09:58
Happy New year to all have a great evening!
Martyn

Sent from my HTC

----- Reply message -----
From: "DOMINIC GANE" <arborico@xxxxxxxxxxx.com>
Date: Fri, Dec 30, 2011 23:12
Subject: Ganoderma applanatum/australe on n.maple - implications
To: "UK Tree Care" <uktc@xxxxxx.tree-care.info>

Gerrit,

Fair point, I hadn't really thought it through in detail. In that case I 
think you would be looking at around 16 treatments, say, 30 replicates each, 
480 cultures ish. Repeat the whole thing to confirm. Sounds doable!

I am really interested in your work on mycorrhizas perhaps you could drop me 
a line so we can discuss.

BTW just ordered Cartwright & Findlay also.

Regards

Dom
________________________________

From: Viper Snake <snake24@xxxxx.nl>
To: UK Tree Care <uktc@xxxxxx.tree-care.info>
Sent: Friday, 30 December 2011, 22:47
Subject: RE: Ganoderma applanatum/australe on n.maple - implications




Dom,

If anyone wants to do some work on this I think I still have a viable F. 
hepatica axenic culture. It's been stored at 4 celcius for a little over a 
year and may be a little sluggish getting going. I know that other 
researchers have managed to develop mycorrhizas on oak in axenic culture. A 
live tissue plus wood block in vitro investigation may be a first step 
towards settling the debate, you could even introduce L. sulpureus to 
elucidate any synergisms between the fungi.

In that case you would also have to include the introduction of Inonotus 
dryadeus, because it often competes with F. hepatica at the base of old white 
oaks and its mycelium can cause a soft rot too.

Regards,
Gerrit



It is a very useful book, Luke - I found it in a 2nd hand bookshop. In it, 
the authors say, in relation to F hepatica:
A trunk and branch rot; microscopic details: simple clamp connections are 
present but scarce; penetration of cell walls - usually through pits; in 
form, wide hyphae constricted at Septa occur along with normal ones; often 
with red-brown contents and invested in a dark brown gummy material. optimum 
temp for growth 26 degrees C. It grows readily on agar with 5% malt, and 0.5% 
malic acid; It grows hardly at all on sterilised oak blocks under lab 
conditions and causes but little decay even after a year (at optimum temp). 
Somewhat more vigorous growth develops on heartwood rather than on sapwood 
blocks. Cartwright (1937) found that it grows rather better on media 
containing upto 1.25% oak tannins - a conc. That checks the growth of many 
wood-rotting fungi; and suggests that the fungus can break down tannins and 
utilise the sugar thereby released.  The Cartwright ref is from Transactions 
of the British Mycological Society, Vol 21, 68-83 titled 'A
 reinvestigation nto the cause of 'brown oak' - F. Hepatica'
As you say, this strongly suggests a heartwood specialist.


-----Original Message-----
From: luke steer [mailto:luketreescapes@xxxxxxxxxxx.com]
Sent: 30 December 2011 12:09
To: UK Tree Care
Subject: RE: Ganoderma applanatum/australe on n.maple - implications

Dear Tony and Gerrit,
As all the published references I've found to date indicate that F. Hepatica
is primarily a heartwood decay fungus, they provide substantial credibility
for that notion.  I suggest that to disprove that concept will require
scientific method and rigour and publication in a peer reviewed Journal such
as The New Phytologist.

Since I sent my previous email I've been told that Cartwright (1937, cited
in Cartwright & Findlay 1946, "Decay of timber and its prevention") found
that F. hepatica grew better on heartwood than on sapwood blocks.  I don't
have a copy of that publication so I'm unaware whether or not the sapwood
contained live cells and, if so, whether the hyphae were able to colonise
these or were restricted to physiologically dysfunctional cells, aerated or
otherwise.

Finally, many of the concepts you suggest are interesting but, for me at
least, I consider that additional evidence is required to prove them,
ideally reviewed by established experts.  Keep up the good work and one day
you may get there.

All the best for the New Year celebrations.

Luke






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