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Role of Pigmentation in Protecting Aspergillus niger Conidiospores Against Pulsed Light Radiation
Author(s) -
Esbelin Julia,
Mallea Sabine,
J Ram Arthur F.,
Carlin Frédéric
Publication year - 2013
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/php.12037
Subject(s) - aspergillus niger , spore , conidium , melanin , pigment , mutant , biology , fungus , strain (injury) , botany , microbiology and biotechnology , chemistry , food science , anatomy , biochemistry , gene , organic chemistry
The photoprotective potential of fungus pigments was investigated by irradiating conidiospores of three Aspergillus niger strains possessing the same genetic background, but differing in their degree of pigmentation with pulsed light ( PL ) and monochromatic (254 nm) UV ‐C radiation. Spores of A. niger MA 93.1 and JHP 1.1 presenting, respectively, a fawn and a white pigmentation were more sensitive to PL and continuous UV ‐C radiation than the wild‐type A. niger strain N402 possessing a dark pigment. Both spores of the dark A. niger N402 and the fawn‐color mutant were equally resistant to moist heat at 56°C while spores of the white‐color mutant were highly sensitive. These results indicate that melanin protects pigmented spores of A. niger from PL .