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PHOTOMORPHOGENESIS IN Penicillium isariaeforme: EXOGENOUS CALCIUM SUBSTITUTES FOR LIGHT
Author(s) -
MUTHUKUMAR GANAPATHY,
JENSEN ELLEN C.,
NICKERSON ANN W.,
ECKLES MARK K.,
NICKERSON KENNETH W.
Publication year - 1991
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/j.1751-1097.1991.tb03936.x
Subject(s) - photomorphogenesis , penicillium , mycelium , phenylacetic acid , calcium , conidium , botany , chemistry , biology , biochemistry , gene , organic chemistry , arabidopsis , mutant
— Penicillium isariaeforme is a photomorphogenic fungus which produces upright bundles of conidia‐bearing mycelia (called coremia) when grown on a defined medium in visible (450–500 nm) light. We found that exogenous Ca 2+ ions could substitute for light. In the dark 1–2 m M Ca 2+ triggered coremia formation. Dark induction of coremia was specific for Ca 2+ in that it could not be duplicated by 50 m M Ba 2+ , Fe 2+ , Mg 2+ , Mn 2+ , Sr 2+ , or Zn 2+ . Additionally, light‐induced coremia formation was inhibited by both KI (2.5 m M ) and phenylacetic acid (0.25 m M ).