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COMMON FEATURES OF PHOTOPERIODISM IN PLANTS AND ANIMALS *
Author(s) -
BÜNNlNG ERWIN
Publication year - 1969
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.1751-1097.1969.tb07286.x
Subject(s) - photoperiodism , circadian rhythm , circadian clock , biology , biological clock , action (physics) , phase (matter) , microbiology and biotechnology , neuroscience , botany , chemistry , physics , organic chemistry , quantum mechanics
— Light break experiments show the role of the circadian clock in photoperiodic timemeasurement. Additional evidence comes from experiments which show the close relation between temperature‐ or light‐induced phase shifts in cycles of photoperiodic responsiveness and simultaneous phase shifts of other processes which are under control of the circadian clock. Using the circadian clock is a common feature of photoperiodism in plants and animals. This clock controls quantitative and qualitative changes in the responsiveness to light. However, quite different pigment systems may be involved, resulting in different action spectra for light break effects. In many cases, these action spectra differ also from the action spectra for phase shifts in the circadian clock.