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Fungus

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Everything posted by Fungus

  1. Fungus
    1. You refer to images, i.e. microphoto's of inside compartmentalization in (cambium and) sapwood of "infected Prunus standing" ? 2. Depending on the pathogen, in this case a parasitic Armillaria species, unless scientific valid evidence of the contrary presented, poor compartmentalizers, such as Prunus, are non-compartmentalizers.
  2. Fungus
    1. Any scientifically valid evidence and documentation of this happening in Prunus, a tree species associated with generalistic endomycorrhizal microfungi only capable of providing for a weak defensive (root) system and known for poor compartmentalization ? 2. "Fixing" the soil ? Resistance to pathogens ? I thought a complete exchange of several cubic metres of soil and removal of all rhizomorphs was necessary to facilitate replant of a tree, that is relocated from a nursery with damaged roots, so how do you prevent re-infection without removing all the soil around and underneath the "saved" tree and in between its roots ?
  3. Fungus
    Matt, No, it's a very superficial white rotter, that also lives on bark of living trees.
  4. Fungus
    As the initial attacking strategy of parasitic Armillaria species is infiltrating the tree through the roots (hyphae, rhizomorphs) and then rising up the trunk blocking transport and killing the cambium, - how do you think "drying out" the infected areas of the trunk can help the tree to compensate for the partial loss of its roots and stop further spreading of the infection to other parts of the trunk and - how do you invigorate roots, that already are infected or are easily infiltrated by rhizomorphs actively searching for living substrates to colonize in the soil ?
  5. Fungus
    8. Scleroderma citrinum. 15-19. Possibly Phellinus pini.
  6. Fungus
    Split beech struggling to stay upright and survive after the melanine covered mycelium of Armillaria mellea has decomposed most of the exposed central wood. ---
  7. Fungus
    Two examples of cracking and shedding of bark after an infection of the cambium with rhizomorphs. ---
  8. Fungus

    Whats this??

    Fungus replied to Rhystree's topic in General chat

    It's a bark and cambium necrosis causing morbid growth of year rings outside the trunk's or branches' shell. Because of the fine agate like inside structure and the quality of the very dense wood, the "lumps" are very popular with wood sculptors.
  9. Fungus
    Matt, : as it is Coprinus disseminatus.
  10. Fungus
    If you have a laboratory and microscopes at your disposal, yes.
  11. Fungus
    In vivo or in vitro ?
  12. Fungus
    Tony, Salvage of what, with what guarantees and at what costs for the client ?
  13. Fungus
    Lee, The picture on your website of a fungus is of the Fairy Ring Mushroom (Marasmius oreades), the species responsible for the 300 years old fused fairy or "olympic" rings with a diameter of 100 metres on the hills surrounding Stonehenge and for the world's largest fairy ring in Wales, that is 700 years old and has a diameter of one kilometer.
  14. Fungus
    How and by what means can "invigorating" the roots after drying out the infected areas, which initially are the roots, and as a result of killing the root protecting mycorrhizal structures with this "method", completely destroying what is left of the tree's defensive system, help to retain trees, that have poor root defensive systems in the first place, because the tree species is associated with generalistic endomycorrhizal microfungi as symbionts ???
  15. Fungus
    A fatal combination of a panic fruiting perennial Ganoderma (white rot with selective delignification) and first time fruiting K. deusta (soft rot) on birch, indicating the mycelia of both fungi have totaly decomposed the wood needed for stability of the tree : fell it ASAP !
  16. Fungus
    Highly depending on the Pholiota species (biotrophic or necrotrophic parasitic ?) and on the interaction of the Pholiota species with the tree species.
  17. Fungus
    Yes (mainly Finnskoga), and north of lake Storsjön, north of Nykoping and in pine and spruce forest west of lake Siljan.
  18. Fungus
    Tony, Could be, although I expected T. versicolor to be more velvety and not so hairy.
  19. Fungus
    Rowen, Phaeolus schweinitzii.
  20. Fungus
    Nick, Tony is right and there's yet another reason : the colour of the center of the caps is far too (dark) brown for A. mellea (mellea = honey coloured) and to be sure it's A. ostoyae, one has to check the marginal zone of the lower surface of the ring, which should have dark brown to black scales for A. ostoyae and yellow scales for A. mellea s.s. (see my Encyclopaedia of Fungi, pages 166-167 for a complete description).
  21. Fungus
    Lee, On coniferous wood : Calocera viscosa.
  22. Fungus
    So we have to wait for another three years to see some results ?
  23. Fungus
    Definitely P. aurivella .
  24. Fungus
    Sean, Here's an example of the effect Phellinus igniarius has on Populus alba. ---
  25. Fungus
    Excellent job :thumbup: !

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