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Bioenergetic analysis of mixotrophic growth in Chlorella vulgaris and Scenedesmus acutus
Author(s) -
Ogawa Takahira,
Aiba Shuichi
Publication year - 1981
Publication title -
biotechnology and bioengineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.136
H-Index - 189
eISSN - 1097-0290
pISSN - 0006-3592
DOI - 10.1002/bit.260230519
Subject(s) - chlorella vulgaris , mixotroph , botany , autotroph , biology , chlorella , scenedesmus , chlorophyll , light intensity , bioenergetics , chlorophyll a , food science , photosynthesis , oxidative phosphorylation , algae , biochemistry , heterotroph , bacteria , genetics , physics , optics , mitochondrion
Abstract The specific growth rate of Chlorella vulgaris in the presence of glucose (mixotroph) was always larger than that in autotroph when the light intensity was less than 10 klux. However, Scenedesmus acutus behaved differently, i.e., when the light intensity was more than 6 klux, the specific growth rate in mixotroph became smaller than that in autotroph. Cellular contents of chlorophyll a and b in Scenedesmus acutus that deteriorated more markedly in mixotroph than those of Chlorella vulgaris could account for these different growth behaviors. In other words, mechanisms relevant to the photosynthesis and the oxidative phosphorylation of glucose seem to function independently with respect to Chlorella Vulugaris .