Many previous studies proved that fungal pellet formation was affected by incubation
temperature. To be more specific, the approach of temperature lowering can induce pellet
formation [25]. In another study by Schugerl et al., various morphological forms were
observed in the incubation temperature range of 25–35 °C [26]. The conclusion made from
these temperature-dependent investigations was that at higher temperature when the oxygen
supply of the cells was inadequate, pellets were transformed into filamentous mycelium. Thus,
the findings of the present study are in agreement with the general acceptance of temperature
versus fungal morphology relationship.