3.5. Discussion
3.5.1. Determination of linear growth rates
When growth rate at 25 ◦C was evaluated, no significant differences
in the values were found (data not shown). This could
probably be due to the area where specimens where collected.
Basidiomata were found in a region named “Región pampeana”
where environmental conditions are distinctive and strains are
probably genetically adapted to them. In general, worldwide cultivated
species, such as Agaricus bisporus, Pleurotus ostreatus, and
Agrocybe cylindracea have an optimal temperature of vegetative
growth at 25 ◦C (Stamets, 1993) this is why we chose a range of
20–30 ◦C to evaluate the optimal temperature of this species. In
fungi, the growth rate is a trait frequently used to estimate the ability
of a strain to colonize a substrate, spread a new niche or exploit
a newly contaminated environment (Plaza et al., 1998). Temperature
for optimal mycelia growth is useful for spawn production and
to optimize the incubation phase.