UKTC Archive

Re: Ustulina as was

Subject: Re: Ustulina as was
From: Michael Richardson
Date: Feb 04 2019 15:59:59
More recent studies by Paulo GOnthier suggest that Kretz has a heartwood
decay colonization strategy.
*Population structure analysis provides insights into the*
*infection biology and invasion strategies of Kretzschmaria*
*deusta in trees* provides some interesting reading.

If Kretz is spread from tree to tree by mycelium (such as in a row of
Limes) then molecular analysis should indicate one genotype spread within
multiple trees.

If Kretz is a heartwood decay then the presence of stromata must indicate
prolonged decay.

Michael


Michael Richardson B.Sc.F., BCMA
Ontario MTCU Qualified Arborist
Richardson Tree Care
Richardsontreecare.ca
613-475-2877
800-769-9183

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On Mon, Feb 4, 2019 at 10:48 AM Rupert Baker <rupert_baker@xxxxxxxx.co.uk>
wrote:

Hi Jonathan,
I'd have said it enters through root damage - which can include compaction
- ;  I have not seen it spread from one tree to another; though I have seen
it on adjacent trees both with damage associated.

Schwarze Engels & Mattheck reckon that it invades via injuries to
bark/sapwood/roots, but mentions a study by Barry Grieg, 1989, Arb Journal
vol 13, 1-6 of it spreading in a lime avenue; and a suggestion in Sinclair,
Lyon, & Johnson 1987, 'Diseases of trees and Shrubs ' that it can spread in
the soil in Mycelial form and infect adjacent trees. TR Peace says it
affects roots killed by adverse soil conditions; and comments that it is
often associated with other fungi - which I have not noticed myself, unlike
Meripilus, which I've seen associated with Ganoderma.

I remember the spelling by thinking of a hybrid of two eastern European
names - Kretz, and then add schmaria - it always looks like there are too
many sh sounds in it...

Atb
Rupert


-----Original Message-----
From: uktc-request@xxxxxx.tree-care.info 
<uktc-request@xxxxxx.tree-care.info>
On Behalf Of Jonathan Hazell
Sent: 04 February 2019 13:49
To: UK Tree Care <uktc@xxxxxx.tree-care.info>
Subject: Ustulina as was

(only cos I can't remember how to spell Kret....)

How does this fungus spread to a new host? In other words, if I see one
lime with the fruiting bodies should I expect to see it in neighbours as a
consequence of root contact for example?

Kind regards,

Jonathan

Jonathan Hazell
07501 XXX XXX
jhazell.com

Sent from my Samsung Galaxy smartphone



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