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Author Saks, N. M. ♦ Stone, R. J.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword BASIC BIOLOGICAL SCIENCES ♦ AMINO ACIDS ♦ BIOLOGICAL EFFECTS ♦ FOOD CHAINS ♦ UNICELLULAR ALGAE ♦ NUTRITION ♦ ACETATES ♦ ALGAE ♦ BIOCHEMISTRY ♦ BUDGETS ♦ CELL CULTURES ♦ DIATOMS ♦ DIET ♦ FRUCTOSE ♦ GLUCOSE ♦ GROWTH ♦ INHIBITION ♦ METABOLISM ♦ PHOTOCHEMISTRY ♦ PHOTOSYNTHESIS ♦ PLANT CELLS ♦ PLANTS ♦ SACCHARIDES ♦ UPTAKE ♦ ALDEHYDES ♦ CARBOHYDRATES ♦ CARBOXYLIC ACID SALTS ♦ CARBOXYLIC ACIDS ♦ CHEMICAL REACTIONS ♦ CHEMISTRY ♦ HEXOSES ♦ KETONES ♦ MICROORGANISMS ♦ MONOSACCHARIDES ♦ ORGANIC ACIDS ♦ ORGANIC COMPOUNDS ♦ PHOTOCHEMICAL REACTIONS ♦ SYNTHESIS ♦ Microbiology ♦ Metabolism
Abstract This paper addresses the nutrition and relative importance of primary production to heterotrophy of select unicellular green algae and diatoms from the same assemblage. Algal growth responses to nutrient additions varied widely. Such responses included: inhibition and enhancement of growth by amino acid additions: nonstimulation or inhibition by most sugars at 10 mM concentration; glucose stimulation of 6 and inhibition of 3 species; fructose inhibition of 6- and 3-fold stimulation of one species; stimulation of most species by a vitamin mixture, some natural products, metabolite mixtures, etc. Photoassimilation of glucose and acetate in 8 of 12 species occurred. Nine of 12 species took up only a fraction of the total carbon fixed as organic substrate. Enhancement of photosynthesis by glucose and inhibition by acetate was common. The data suggest that attached littoral and shoal marine algal assemblages may play mixed trophic roles at lower levels of the detrital food web.
Educational Use Research
Learning Resource Type Article
Publisher Date 1976-01-01
Publisher Place United States
Journal J. Phycol.
Volume Number 12
Issue Number 4
Organization City Coll., New York, NY


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