First successful cultivation of wild strains of Irpex rosettiformis from the Brazilian Atlantic Rainforest

Author(s)

Drewinski, Mariana de Paula ; Zied, Diego Cunha ; Menolli Jr, Nelson

• Document type: Journal article
• Source: MYCOLOGICAL PROGRESS; v. 24, n. 1, p. 12-pg., 2025-02-21.

Abstract

Irpex rosettiformis is an edible macrofungi species that occurs in the tropical and subtropical regions of the Americas. Herein, we report for the first time a successful cultivation of wild strains of I. rosettiformis from Brazil. We evaluated the in vitro growth of nine wild strains at five temperatures and on two substrates. The cultivation in bags was carried out on a sawdust-based substrate, and the basidiomata produced were evaluated for nutritional and mineral content. The mycelium of the wild strains of I. rosettiformis has an optimal mycelial growth rate at 28 degrees C and 30 degrees C, and the wild strains evaluated in the substrate experiment grew better in the sterile substrate based on eucalyptus sawdust than in the pasteurized JunCao substrate. The highest values of biological efficiency (29.47-30.01%) were obtained from the wild strain CCIBt4706 from the south of Brazil. Nutritional analyses showed that I. rosettiformis contains high values of crude fiber (22.68-27.61%) and crude protein (18.89-25.63%). Potassium was the most abundant mineral (33,500 mg/kg), followed by phosphorus (10,800 and 12,500 mg/kg) and magnesium (2300 and 2600 mg/kg) in the two tested samples. The species I. rosettiformis can be cultivated using traditional methods known for other commercial mushroom species and has the potential to be introduced into the edible mushroom industry. (AU)

• FAPESP's process: 17/25754-9 - Edible mushrooms of the Atlantic Forest: diversity and viability of cultivation
• Grantee: Mariana de Paula Drewinski
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 18/15677-0 - Mushrooms in the Atlantic Forest: diversity and potential of edible species
• Grantee: Nelson Menolli Junior
• Support Opportunities: BIOTA-FAPESP Program - Young Investigators Grants