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Photo‐inhibition of cell division and growth in euglenoid flagellates
Author(s) -
Cook J. R.
Publication year - 1968
Publication title -
journal of cellular physiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.529
H-Index - 174
eISSN - 1097-4652
pISSN - 0021-9541
DOI - 10.1002/jcp.1040710209
Subject(s) - euglena gracilis , euglena , cell division , limiting , fluorescence , biophysics , division (mathematics) , incandescent light bulb , light intensity , botany , strain (injury) , chemistry , biology , cell , biochemistry , optics , anatomy , chloroplast , physics , mechanical engineering , arithmetic , mathematics , gene , engineering
Visible light of moderate intensity causes two and perhaps three types of division inhibition in Euglena gracilis are related cells. Fluorescent light causes a general inhibition of growth and division which is temperature‐dependent. Pigmentation or complex organic media partially lifts this inhibition. A second type of inhibition, which is transient, can be caused by either fluorescent or incandescent light, and is found with an irreversibly bleached strain of Euglena grown on a limiting concentration of acetate; this inhibition could not be demonstrated in cells grown on limiting concentrations of glucose.