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Chlorophyll Formation in Euglena gracilis var. bacillaris: Effect of Enzyme Inhibitors
Author(s) -
DUBASH P. J.,
REGE D. V.
Publication year - 1969
Publication title -
the journal of protozoology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.067
H-Index - 77
eISSN - 1550-7408
pISSN - 0022-3921
DOI - 10.1111/j.1550-7408.1969.tb02247.x
Subject(s) - euglena gracilis , etiolation , sodium fluoride , chemistry , cysteine , enzyme , biochemistry , photosynthesis , greening , euglena , chlorophyll , glutathione , fluoride , chloroplast , biology , organic chemistry , inorganic chemistry , ecology , gene
SYNOPSIS. The synthesis of chlorophylls in non‐proliferating dark‐grown etiolated cells of Euglena gracilis var. bacillaris is markedly inhibited by the enzyme inhibitors dinitrophenol (DNP), p ‐chloromercuribenzoate (pCMB) and sodium fluoride. The pCMB inhibition of greening is reversed to a great extent by glutathione but not by cysteine. The inhibitory effect of fluoride is reversed by both succinate as well as Mg ++ during illumination. Fluoride also inhibits the photosynthetic growth of the euglenas; this inhibition is competitively reversed by succinate.