Predicting Production in Light-Limited Continuous Cultures of Algae
AUTOR(ES)
Eppley, Richard W.
RESUMO
Equations relating productivity, growth rate, cell concentration, and light absorption lead to the prediction that, when incident light is below saturating intensity, maximal productivity will occur at half the maximal growth rate. The freshwater alga Chlorella pyrenoidosa TX71105 and the marine alga Dunaliella tertiolecta were grown in a small continuous culture apparatus with turbidostatic control. With both cultures, the cell concentration showed a linear decrease with dilution rate. Productivity was maximal at about one-half the maximal dilution rate. Average mass per cell increased near the maximal dilution rate, causing some asymmetry in the productivity versus dilution rate curve. The chlorophyll content per unit mass decreased in this region, but the chlorophyll content per cell remained constant. Best production rate in a light-limited algal culture was obtained when the growth rate at very low cell concentration was determined in the apparatus and the dilution rate was set at one-half that value.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=1058357Documentos Relacionados
- Light-Limited Growth of Chlorella in Continuous Cultures
- Response of Rhodopseudomonas capsulata to illumination and growth rate in a light-limited continuous culture.
- Toxin Production by Microcystis aeruginosa as a Function of Light in Continuous Cultures and Its Ecological Significance
- Development of multipurpose peroxisomes in Candida boidinii grown in oleic acid-methanol limited continuous cultures.
- Synergistic Interaction Between Anabaena and Zoogloea spp. in Carbon Dioxide-Limited Continuous Cultures