Fjm. Verhagen et al., THE UBIQUITY OF NATURAL ADSORBABLE ORGANIC HALOGEN PRODUCTION AMONG BASIDIOMYCETES, Applied microbiology and biotechnology, 45(5), 1996, pp. 710-718
Recently, several species of basidiomycetes were shown to produce de n
ovo high concentrations of chloroaromatic metabolites. Since these lig
nocellulose-degrading fungi play a major role in the ecosphere, the pu
rpose of this study was to determine the ubiquity of organohalogen pro
duction among basidiomycetes. A total of 191 fungal strains were monit
ored for adsorbable organic halogen (AOX) production when grown on de
lined Liquid media. Approximately 50% of the strains tested and 55% of
the genera tested produced AOX. A low production of 0.1-0.5 mg AOX/l
was observed among 25% of the strains, a moderate production of 0.5-5.
0 mg AOX/l was observed among 16% of the strains and 9% of the strains
produced high levels (5-67 mg AOX/l). The latter group was dominated
by species belonging to the genera Hypholoma, Mycena and Bjerkandera,
showing specific AOX productions in the range 1074-30893 mg AOX/kg dry
weight of mycelial biomass. Many highly ecologically significant fung
al species were identified among the moderate to high producers, These
species were also able to produce AOX when cultivated on natural lign
ocellulosic substrates. NL Hypholoma fasciculare and Mycena metata res
pectively produced up to 132 mg and 193 mg AOX/kg dry weight of forest
litter substrate in 4 weeks.