Open AccessCharacteristics of phosphate solubilization by an isolate of a tropical Penicillium rugulosum and two UV‐induced mutants
Author(s) -
Reyes Isbelia,
Bernier Louis,
Simard Régis R,
Tanguay Phillipe,
Antoun Hani
Publication year - 1999
Publication title -
fems microbiology ecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.377
H-Index - 155
eISSN - 1574-6941
pISSN - 0168-6496
DOI - 10.1111/j.1574-6941.1999.tb00584.x
Subject(s) - biology , penicillium , gluconic acid , maltose , phosphate , fungus , sucrose , penicillium roqueforti , conidium , microbiology and biotechnology , mutant , microorganism , biochemistry , food science , botany , bacteria , gene , genetics
After screening several fungal isolates obtained from Venezuelan soils, the isolate IR‐94MF1 of Penicillium rugulosum was selected for its high mineral phosphate solubilizing activity (Mps + ) with hydroxyapatite. Mutants with altered (Mps − ) or amplified activity (Mps ++ ) were obtained by UV irradiation of conidia. When glucose was used as the sole C source by the fungus, gluconic acid was associated with the hydroxyapatite activity. In solid media, in comparison to glucose and maltose, sucrose appeared to be the best C source for the solubilization of hydroxy‐apatite and FePO 4 .