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SPECTRAL RESPONSES TO LIGHT BY UNICELLULAR PLANTS *
Author(s) -
Pirson A.,
Kowallik W.
Publication year - 1964
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.1751-1097.1964.tb08169.x
Subject(s) - blue light , chlorella , red light , biophysics , chemistry , cell division , botany , biology , algae , biochemistry , cell , optics , physics
Summary Synchronized cultures of Chlorella show marked differences in cellular composition when grown in blue and red light at equal net production (dry weight). Cells from blue light always have a higher content in protein and RNA, while cells in red are relatively rich in total carbohydrates. The spectral effect responsible for this difference is independent of the nitrogen source used. Other effects of blue light (vs. red) are: a permanent delay of the cell division, and a transient reduction in DNA synthesis; prolonged culture in blue overcomes the latter inhibition.