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EFFECTS OF UV‐B IRRADIATION ON SOROCARP DEVELOPMENT OF Dictyostelium discoideum
Author(s) -
HÄDER DonatP.
Publication year - 1983
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.1751-1097.1983.tb03382.x
Subject(s) - dictyostelium discoideum , irradiation , chemistry , biophysics , photochemistry , biology , biochemistry , physics , nuclear physics , gene
Abstract— The effect of UV‐B irradiation on the development of Dictyostelium discoideum from amoebae to mature sorocarps was studied. Radiation with wavelength ≤ 310 nm was very efficient in retarding and inhibiting the development especially when the organisms were exposed during the first 12 h. At a wavelength of 280 nm an irradiation of 1 h at an irradiance of < 0.2 W m ‐2 was sufficient to completely inhibit sorocarp development. The fluence‐dependence shows as well that the development of D. discoideum is a very sensitive system to indicate UV‐B irradiation. Furthermore, since the sorocarp development is concluded within 48 h it can serve as a fast bioassay for hazardous levels of increased UV‐B irradiation which have been predicted as a result of the ozone reduction in the stratosphere due to the manmade production and emission of chlorofluoromethanes.