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THE HETEROTROPHIC CAPABILITIES OF CYCLOTELLA MENEGHINIANA 1
Author(s) -
Lylis J. C.,
Trainor F. R.
Publication year - 1973
Publication title -
journal of phycology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.85
H-Index - 127
eISSN - 1529-8817
pISSN - 0022-3646
DOI - 10.1111/j.1529-8817.1973.tb04109.x
Subject(s) - darkness , biology , wax , heterotroph , botany , biochemistry , bacteria , genetics
SUMMARY Cyclotella meneghiniana grew heterotrophically in darkness when glucose in concentrations from 5 mg/liter to 10 g/liter was provided. The other compounds tested did not support growth. However, in continuous light (300 ft‐c) growth wax not enhanced if glucose wax provided. Under diurnal conditions of light (300 ft‐c) approximately 12–14 hr of darkness were required to observe the enhancement effects of glucose. Uptake studies with labeled glucose indicated that uptake is not dependent on glucose, but that it occurs only at low light intensities. Cells required 12–14 hr of darkness to develop the uptake system.