Phanerochaete velutina

Tlalka, M., Watkinson, S. C., Danah, P. R. Fricker, M. D. (2002). Continuous imaging of amino acid translocation in intact mycelia of Phanerochaete velutina reveals rapid, pulsatile fluxes. New Phytologist, 153, 173-84. 

Wells, J. M., Boddy, L. Evans, R. (1995). Carbon translocation in mycelial cord systems of Phanerochaete velutina (DC. Pers.) Parmasto. New Phytologist, 129, 467-76. 

Wells, J. M., Thomas, J. Boddy, L. (2001). Soil water potential shifts developmental responses and dependence on phosphorus translocation by the saprotrophic, cord-forming basidiomycete Phanerochaete velutina. Mycological Research,... 

Fig. 7.2. The structure of the translocation pathway in mycelial cords. (A) Hyphae fanning out at the distal end of a cord of Phanerochaete velutina (scanning electron microscopy by A. Yarwood) (B) Internal structure of a cord of Serpula lacrymans, showing vessels and cytoplasm-filled hyphae and extracellular matrix material. (C) Diagram of the components of the translocation pathway (adapted from Cairney, 1992) V, vessel hypha f, foraging front a, anastomosis (D) A cord system in beech woodland showing both corded mycelium and diffuse growth in contact with the wood substrate.

Noncircadian oscillations in amino acid transport have complementary profiles in assimilatory and foraging hyphae of Phanerochaete velutina. New Phytologist 158, 325-35. 

Figure 8.8 Change with time of surface (a, b) and mass (c, d) fractal dimensions of mycelial systems of (a, c) Hypholoma fasciculare and (b, d) Phanerochaete velutina extending from a 4 cm beech wood resources across nonsterile soil, compacted in 24 cm x 24 cm trays, either to inert control baits (squares) or 4 cm uncolonised wood resources (circles) (modified from [61]).

Water potential" (which determines ease or difficulty of obtaining water), temperature and pH all affect fractal structure of mycelial systems. Moreover, they exert interactive effects with each other and with other abiotic variables, e.g. sand content of soil [66, 68], Temperature effects on fractal dimensions of Stropharia caerulea were variable (Table 8.3) [69]. At 5°C, it took 9 days longer to achieve the Dgs values obtained at 10-20 °C, and 12 days longer to achieve the Dbm values for Stropharia caerulea. At 25 °C, both fractal dimensions of Stropharia caerulea were significantly lower than values of mycelial systems at 10-20 °C, until 26-29 days. There were also slight intraspecific differences between strains of Stropharia caerulea [69]. For Phanerochaete velutina, both fractal dimensions at 5 °C were significantly less than at 10-25 °C for the first 20 days and 14 days respectively. It is unclear what is mediating these temperature effects. 

Table 8.3 Effect of temperature on the fractal geometry of mycelial systems of Stropharia caerulea and Phanerochaete velutina, extending from beech (Fagus sylvatica) wood block inocula across soil after 30 days. Data from [69].

Phanerochaete velutina Stropharia caerulea was rapidly replaced Dbm and Dbs were significantly reduced Dbm was significantly reduced... 

Owen, S.L. (1997). Comparative development of the mycelial cord-forming fungi Coprinus picaceus and Phanerochaete velutina, with particular emphasis on pH and nutrient reallocation. PhD thesis. University of Wales, Cardiff. 

Donnelly, D.P. and Boddy, L. (1998). Developmental and morphological responses of mycelial systems of Stropharia caerulea and Phanerochaete velutina to soil nnirient enrichment. New PhytoL, 138, 519-531. 

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