ROOM TEMPERATURE ISOLATIONS CAN BIAS AGAINST SELECTION OF LOW TEMPERATURE MICROFUNGI IN TEMPERATE FOREST SOILS

摘要: Very different microfungal species were obtained from forest soils in Rhode Island when two isolation temperatures (0 C and 25 C) used, even though isolates the same samples. At 0 C, Zygomycetes, particularly Mucor Mortierella sections Hygrophila Stylospora, favored. Most fungi isolated at psychrotrophs capable of growing to greater than C. However, psychrophiles, mostly spp., also isolated, new identified. Isolations resulted primarily recovery Deuteromycetes section Isabellina. these mesophiles with growth minima between 5 10 maxima above It is concluded that temperature can seriously bias our perception fungal abundance, dominance distribution soils. Soil measured cm depth for 2 years a remained or below months each year did not rise 19 Water potentials upper 15 soil -0.4 MPa over period limiting most fungi. Therefore, low are potentially active throughout this temperate forest, whereas activity may be restricted periods approximately should improve iden