Oxidative stress and culture atmosphere effects on bioactive compounds and laccase activity in the white rot fungus <i>Phlebia radiata</i> on birch wood substrate.

ABSTRACT: Wood-decaying white rot fungi live in changing environmental conditions and may switch from aerobic to fermentative metabolism under oxygen depletion. Decomposition of wood and lignocellulose by fungi is dependent on enzymatic and oxidative biochemistry including generation of reactive oxygen species. In this study, we subjected semi-solid wood-substrate cultures of the white rot fungus Phlebia radiata to oxidative stress by addition of hydrogen peroxide under aerobic and anaerobic cultivation conditions. Wood decomposition and fungal metabolism were followed by analysis of extracellular organic compounds, mycelial growth, and laccase activity. Under both atmospheric conditions, accumulation of bioactive aromatic compounds from birch wood occurred into the culture supernatants after

SUBMITTER: Kiviniemi E 

PROVIDER: S-EPMC11466665 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature