Decay images

[Treecreeper1961]

There was far more wood that had been white rotted than brown rotted, with the remaining lignin confined to a column in more central heart wood areas.

Presumably, the A. mellea and L. sulpureus are in direct competition with each other but is it possible that the A. mellea has began colonising from the cambium and outer rings whilst the L. sulphureus has established in the central butt/root plate and was degrading the cellulose from the inside out?

Is it a fair assumption that the A.mellea was the first to begin it's work as there is more white rot(?) or perhaps not as hawthorn heart is dense and fairly well lignified offering a good, long satisfying meal that takes time to digest?

[Tony Croft aka hamadryad]

There was far more wood that had been white rotted than brown rotted, with the remaining lignin confined to a column in more central heart wood areas.

Presumably, the A. mellea and L. sulpureus are in direct competition with each other but is it possible that the A. mellea has began colonising from the cambium and outer rings whilst the L. sulphureus has established in the central butt/root plate and was degrading the cellulose from the inside out?

Is it a fair assumption that the A.mellea was the first to begin it's work as there is more white rot(?) or perhaps not as hawthorn heart is dense and fairly well lignified offering a good, long satisfying meal that takes time to digest?

 

think about the logic behind your statement, laetiporus eats what? leaves behind what?

 

the chicken would have been there first most likely, its part of the ecolgy of hawthorn habitats here in the u.k (neville fay mentions it in a paper somewhere) it has not interest in invading the cambium, or even the sapwood, its a heartwood rotter, only when T/R is approaching the limits do trees fail from laeti colonisation. the armillaria will have been a weakness parasite on a tree in decline and more rapid and complete in its colonising

[Treecreeper1961]

think about the logic behind your statement, laetiporus eats what? leaves behind what?

 

the chicken would have been there first most likely, its part of the ecolgy of hawthorn habitats here in the u.k (neville fay mentions it in a paper somewhere) it has not interest in invading the cambium, or even the sapwood, its a heartwood rotter, only when T/R is approaching the limits do trees fail from laeti colonisation. the armillaria will have been a weakness parasite on a tree in decline and more rapid and complete in its colonising

 

Laeti degrades the cellulose leaving behind the lignin.

 

It just appears as though the two have collided, with A.mellea(shouldn't assume it is mellea I suppose) completely outdoing L.sulphureus.

 

Sorry,yes I see what you mean, being heavily lignified would not slow a cellulose degrader. It does though, doesn't it?

 

If, as it does, the Laeti resides in the heartwood and the extent of brown rot is not that great then this is unlikely to have caused the decline or weakness that led to the Armillaria.

 

I don't know, I thought perhaps the two together told a story. Maybe there was a mechanical injury that activated the Laeti and eventually allowed the Armillaria in.

Just trying to pick your brains about how these things interact, in a clumsy kinda way.

[Tony Croft aka hamadryad]

Laeti degrades the cellulose leaving behind the lignin.

 

It just appears as though the two have collided, with A.mellea(shouldn't assume it is mellea I suppose) completely outdoing L.sulphureus.

 

Sorry,yes I see what you mean, being heavily lignified would not slow a cellulose degrader. It does though, doesn't it?

 

If, as it does, the Laeti resides in the heartwood and the extent of brown rot is not that great then this is unlikely to have caused the decline or weakness that led to the Armillaria.

 

I don't know, I thought perhaps the two together told a story. Maybe there was a mechanical injury that activated the Laeti and eventually allowed the Armillaria in.

Just trying to pick your brains about how these things interact, in a clumsy kinda way.

 

I know and what Im trying to say in a clumsy way is that that leti would not have taken any more than it had access to, but the armillaria is a weakness parasite, so I would need to see a wiser view, the context to learn more from the interaction.

[David Humphries]

One from the archives.

 

Possibly guilty of being a little over cautious with this one back in 2002.

 

Polyporus squamosus/Horse chestnut

 

 

 

 

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[Tony Croft aka hamadryad]

One from the archives.

 

Possibly guilty of being a little over cautious with this one back in 2002.

 

Polyporus squamosus/Horse chestnut

 

 

 

 

.

 

 

yes I agree, but would also say that there is a very large band of reaction zone there so maybe not as knee jerk as you may accuse yourself of.

[Fungus]

Simultaneous white rot caused by Fomes fomentarius inside the split fork and both trunks of a bifurcated beech.

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[David Humphries]

When two 'rots' collide

 

 

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[sean freeman]

Very nice pics David , saw a lot of this combo action in young birch woodland around Calke in Feb/March, but did not get to see the inside story.

[David Humphries]

Very nice pics David , saw a lot of this combo action in young birch woodland around Calke in Feb/March, but did not get to see the inside story.

 

Interesting sean.

 

Did you note what shade of grey/white the Fomes brackets were in Calke by any chance.

 

Were they a darker grey or more light grey/white?

 

 

 

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