Open AccessDegradation of 2,7‐dichlorodibenzo‐ p ‐dioxin by wood‐rotting fungi, screened by dioxin degrading ability
Author(s) -
Mori Toshio,
Kondo Ryuichiro
Publication year - 2002
Publication title -
fems microbiology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.899
H-Index - 151
eISSN - 1574-6968
pISSN - 0378-1097
DOI - 10.1111/j.1574-6968.2002.tb11296.x
Subject(s) - strain (injury) , phanerochaete , chrysosporium , incubation , biology , fungus , microbiology and biotechnology , food science , botany , chemistry , biochemistry , lignin , anatomy
One hundred thirty‐six strains of wood‐rot fungi (74 strains, 66 species of 19 genera, and 62 unidentified strains) were screened for the dibenzo‐ p ‐dioxin (DD) decreasing activity. It was observed that 20% of additional DD (1 μmol) disappeared in the cultures of eight strains belonging to four genera ( Aleurodiscus (one strain), Ceriporia (one strain), Phanerochaete (one strain), Phlebia (five strains)) and four unidentified strains. These 12 fungal strains were used for the examination of the degradation of [U‐ 14 C]2,7‐dichlorodibenzo‐ p ‐dioxin (2,7‐diCDD). The fungi unidentified strain MZ‐227, Phlebia sp. MG‐60 and Phlebia lindtneri showed higher cumulative 14 CO 2 evolution rates than the other nine fungi. MZ‐227, Phlebia sp. MG‐60, and P. lindtneri converted 250 nmol of 2,7‐diCDD to 196, 155 and 149 nmol of 14 CO 2 , respectively, during a 30‐day incubation period