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 Add this item to the list   Polyporus sanguineus L. ex Fries
Page number:229 
Description type:Culture description 
Description:Polyporus sanguineus L. ex Fries
Cultures examined: FRI 677, 679: Context and Polysporous, Isolated from 7384 and 7445 respectively, both on hardwood logs, causing white stringp rot.
Growth characters. - Rate of growth moderately rapid, the radius at 1 week 2.8-3.5 cm; at 2 weeks 6.3-7.3 cm. Advancing zone even, hyaline and appressed. Mat at first appressed, downy to farinaceous, thin and translucent, white, soon becoming appressed, farinaceous to thin-felty, in a partial or complote zone around inoculum with radiating sectors which partly coalesce at places, appearing pellicular but fragile, opaque, white, some scattered granules `orange-pink' to orient pink', after 2-3 weeks downy to thin floccose towards growing region, in most of the other areas appressed, farinaceous to thin-felty, opaque and white, with granules, small projections and pores formed on the surface, `bittersweet pink', `straw-berry pink', `light coral red' and `rufous', and small scattered patches of woolly to woolly-felty mycelium `light salmon-orange', to `bittersweet pink', after 4-6 weeks extensive fruiting areas develop, appressed, thin-felty, opaque white bearing granules, small projections and pores coloured `zinc orange', `salmon-orange', `bittersweet orange', `rufous', `light coral pink', `orient pink', 'flesh colour' and `coral pink', small woolly-felty patches `ochraceous salmon' and `light salmon-orange'. Reverse unchanged or `light orange-yellow' beneath fruiting areas. Odour faim.
Tests for extracellular oxidase positive: on gallic acid agar diffusion zones very strong with no growth or a trace of growth; on tannic acid agar diffusion zones moderately strong, diameter 2.5 cm.; with guaiacum reaction strong.
Hyphal characters. - Advancing zone: hyphae hyaline, thin-walled, nodose-septate, branched, 1.2-3.7 µm in diameter. Aerial mycelium: (a) hyphae as in advancing zone; (b) fibre hyphae numerous, with walls thick and refractive, lumina broad to narrow or apparently lacking, unbranched or sparingly bran ched and branched with many short branches along a short length, 1.5-3.0 µm in diameter; (c) oidia. numerous, formed by the fragmentation of nodoseseptate hyphae, 1.3-3.0 µm. in diameter and of varying lengths, 2.2-20.8 µm; (d) chlamydospores fairly common, slightly thick-walled, terminal as well as intercalary, 5.1-13.5 x 4.9-9.8 µm. Fruiting areas: (a) nodose-septate hyphae and (b) fibre hyphae as in aerial mycelium; (c) basidia 3.7-4.9 µm in diameter bearing four spores; (d) basidiospores hyaline, even, 3.7-4.9 x 2.2-2.5 µm. Submerged mycelium: (a) hyphae as in advancing zone; (b) chlamydospores as in aerial mycelium.
References: Bose (1952), Mckay (1959), and Nobles and Frew (1962).
P. sanguineus and P. cinnabarinus resemble very closely in culture. However, in P. sanguineus the rate of growth is faster, colour develops in an extensive area of the mat, only poroid fruiting areas are formed and the minimum temperature for growth is below 12°C whereas in P. cinnabarinus the rate of growth is slower, colour develops in a fesser area of the mat, poroid fruiting areas and also raised and foliose fruiting structures are formed and the minimum temperature for growth is above 12°C.

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