An anamorph of the white-rot fungus Bjerkandera adusta capable of colonizing and degrading compact disc components.
A Geotrichum-like fungus isolated from a biodeteriorated compact disc (CD) was able to degrade in vitro the components of different CD types. The fungal hyphae inside the CD fragments grew through the aluminium layer and produced the solubilization of this metal. Furthermore, examination of CDs by scanning electron microscopy showed that the fungus was able to destroy the pits and lands structures grooved in the polycarbonate layer, confirming degradation of this aromatic polymer. The fungus secretes aryl-alcohol oxidase and Mn2+-oxidizing peroxidase, two kinds of oxidoreductases characteristic of ligninolytic basidiomycetes. Analysis of the ITS region of ribosomal DNA, as well as the morphological characteristics, the lack of sexual forms and the profile of enzymes secreted in liquid medium identified the fungus as a Geotrichum-like anamorph of Bjerkandera adusta (Willd.) P. Karst.
Romero
Elvira
E
Centro de Investigaciones Biológicas, CSIC, Madrid, Spain.
Speranza
Mariela
M
García-Guinea
Javier
J
Martínez
Angel T
AT
Martínez
María Jesús
MJ
D000429:Alcohol Oxidoreductases / Q000032:analysis / Q000378:metabolism; D000535:Aluminum / Q000378:metabolism*; D001673:Biodegradation, Environmental; D016250:Compact Disks; D004275:DNA, Ribosomal / Q000235:genetics; D010544:Peroxidases / Q000032:analysis / Q000378:metabolism; D011076:Polycarboxylate Cement / Q000378:metabolism*; D020072:Polyporales / Q000166:cytology / Q000254:growth & development / Q000378:metabolism*; D017422:Sequence Analysis, DNA; D012995:Solubility
D004275:DNA, Ribosomal; D011076:Polycarboxylate Cement; C005506:polycarbonate; D000535:Aluminum; D000429:Alcohol Oxidoreductases; C077759:aryl-alcohol oxidase; D010544:Peroxidases; C051129:manganese peroxidase