Antrodia gossypium, Phlebiopsis gigantea and Heterobasidion parviporum: in vitro growth and Norway spruce wood block decay

Why Does Phlebiopsis gigantea not Always Inhibit Root and Butt Rot in Conifers?

“…The linear growth rate of H. parviporum mycelium and of the competitive fungus, P. gigantea, evaluated in pure cultures showed an interesting pattern. Żółciak et al [62] found that, in the first 2 days, differences in growth between both fungi were very significant ( Figure 3), with P. gigantea elongating about five times faster than H. parviporum on 2% malt extract agar (MEA). After 4 days, mycelial elongation by the competitor significantly accelerated, only to decline after 6 days.…”

“…The sequences of both partners were deposited in GenBank as: HP1 KX2896987, HP2 KX289698, HP3 KU645328, FI KX756646, and GB KX756647. The linear growth rate of H. parviporum mycelium and of the competitive fungus, P. gigantea, evaluated in pure cultures showed an interesting pattern.Żółciak et al [62] found that, in the first 2 days, differences in growth between both fungi were very significant ( Figure 3), with P. gigantea elongating about five times faster than H. parviporum on 2% malt extract agar (MEA).…”

“…Wood decay activity of Heterobasidion and Phlebiopsis determines the success of biological control, especially since wood decomposition can be also slowed down by the bordering of xylem defense wood [92]. Żółciak et al [62] compared the rate of Norway spruce decay between isolates of Heterobasidion and Phlebiopsis and found ~33% wood loss for P. gigantea isolates and ~25% loss for H. parviporum isolates (Figure 7).…”

“…Wood decay rate significantly depends on the origin of the culture. For P. gigantea, differences between mycelium isolated from stump wood or a fruiting body of forest origin, and a pure culture from commercial Rotstop, were described byŻółciak et al [62]. Mgbeahuruike et al [91] did not find differences in the decay rate of Norway spruce and Scots pine wood, but decay rates for Rotstop isolates were different.…”

Fibroporia gossypium in northeastern Poland – a preliminary study

“…The large differences in wood decay by a homogenous F. gossypium mycelium after a period of 6 months (differentiation in Ir values and V% coefficient) suggest a changing wood quality of the samples, actually a different wood density [25,26]. After 3 months, the variability of decomposition of particular samples (SD) was much lower than after 6 months, which is due to the variability of sample wood density and different levels of enzymatic action of the fungus [21,26]. This seems to be an important methodological remark in the study of the decomposition of wood.…”