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EFFECTS OF SOLAR RADIATION ON MOTILITY IN: Stentor coeruleus
Author(s) -
Häder DonatP.,
Häder Maria A.
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.tb02036.x
Subject(s) - motility , radiation , ciliate , chemistry , biophysics , phototaxis , biology , microbiology and biotechnology , botany , physics , ecology , optics
The effects of solar radiation on the motility of the colored ciliate, Stentor coeruleus, have been assessed as a photodynamic model system for hypericism. The organism has been found to be extremely sensitive to solar radiation–a few minutes of unfiltered radiation suffice to arrest motility and decrease the velocity of movement. Removing UV‐B and UV‐A radiation prolongs the tolerated exposure times. From the present study, the mechanisms of the photodynamic action in S. coeruleus and in hypericin‐sensitized reactions have not been resolved in terms of Type I and II mechanisms.