funghi ident

[Fungus]

it is in the interest of biotrophic parasites to leave the tree alive ...

 

... because, as opposed to necrotrophic parasites, they die after killing the tree.

[brothergrim]

... because, as opposed to necrotrophic parasites, they die after killing the tree.

 

another thing learned...

 

took these photos today at work, and from what I learned yesterday i believe it to be a saprophytic type (check me) i havent a clue what type though pictures are'nt brill Iphones ****.

[Tony Croft aka hamadryad]

P ostreatus

[Treecreeper1961]

I like the rosette shape they have formed.

[Fungus]

Pleurotus ostreatus ...

 

... a species of which the mycelium needs a frost bite to fruit, invading living tissues of trees in winter, while the tree is in rest and can't defend itself.

Edited November 29, 2011 by Fungus

[MATTMOSS]

That's just what, I needed, I found that very informative I work In a ill informed environment were people believe that if there's fungi On the tree they think it's dying or not safe to climb which obviously isn't the case it just requires further investigation but without the knowledge your knackered

 

Go and buy yourself a copy of ' Manual of Wood Decays in Trees ' by Claus Mattheck and K Weber. It is an excellent book for you to START learning about fungi and trees.

[Tony Croft aka hamadryad]

No problem, open to all.

 

3. Just wondering whether the production of multiple brackets relates to phases or 'moments' in the physiology of the fungi and perhaps it's interrelationship with the tree's physiology. Or is it that there is more than one 'individual' present? Could it just be the survival/propagation strategy?

 

4. Agree. Just trying to get a clearer understanding of the relationship between biotrophic parasite and host. The stress/damage/wound that allowed access for the fungi may be or could be the final nail in the coffin also, for tree and fungi but does the parasitic action add to the drain on resources enough to speed up the decline?

 

More questions:

 

5. What is the usual mode of entry for Ganoderma applanatum and australe?

 

6. Is it strictly accurate to describe G. applanatum as a biotroph? What is it's decay strategy/type? Mainly confined to heartwood and therefore not really a biotrophic sp.?

 

7.Where as G. australe can extend into sound sap wood and makes it more appropriately a biotroph?

 

8. Does the effect of the biotroph show in the vigour and vitality of the canopy? and could this give a clue as to the i.d. of the fungi?

 

3= I think your a very astute observer, and all the points you mention in the open thinking here are about right.

 

4= Dysfunction is a natural part of the aging of trees, though damage in youth can be a bigger problem because of the lesser volume of material avaliable to a biotrophic parasite so its effect would be seen and felt sooner. This is a key difference in the ancient tree and juvenile tree colonised, species of tree fungi and all the combinations play very important factors in the mode and succses of the fungi concerned.

 

5=as with most fungi it is via air born spores, the seeds of fungi landing in a sweet spot suitable for germination, a fresh wound from a limb failure or rain washing spores down through soils to a root maybe torn by a big blow.

 

6= Ganaderma applanatum=lipsiense and yest it is a VERY weak parasite and usualy confined to dysfunctional tissues, and normaly associated with big wounds and lots of dysfunction where as the australe can suddenly appear from a tree with no obvious scars. the rot via applanatum is also much more complete than in australe.

 

7=yes, australe is a rare breed in that not only is it a biotrophic parasite but in many tree species it is a particularly capable coloniser, chestnuts and limes for example have no defense chestnuts are degrade at a frightening rate.

 

8= it certainly does and it helps, as in its not reliable but as another piece in a jigsaw, your detective work adding it all up to find the likely cause and culprit hinting to a prime suspect.

[brothergrim]

Thanks I've ordered it on amazon cheers

[Treecreeper1961]

Go and buy yourself a copy of ' Manual of Wood Decays in Trees ' by Claus Mattheck and K Weber. It is an excellent book for you to START learning about fungi and trees.

 

Your one step ahead of me there mate.

It is on my christmas list though.

Together with.............................

[Treecreeper1961]

... a species of which the mycelium needs a frost bite to fruit, invading living tissues of trees in winter, while the tree is in rest and can't defend itself.

If you select a few fronds from a cluster, carefully remove them so not to damage the others, they are great fried in olive oil with a little lemon juice:thumbup1:

Make sure of your i.d. though, as with all fungi!