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Effects of pH on the growth rate, motility and photosynthesis in Euglena gracilis
Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
2001 (English)In: Folia microbiologica (Prague), ISSN 0015-5632, E-ISSN 1874-9356, Vol. 46, no 6, 549-554 p.Article in journal (Refereed) Published
Abstract [en]

The influence of pH 3-10 on the growth, motility and photosynthesis in Euglena gracilis was demonstrated during a 7-d cultivation. The cells did not survive at pH <4 and >8, highest growth rate being detected at pH 7. Motility followed a similar pattern as growth rate. Photosynthetic response curves were shown to be of the same type over the whole pH range. High respiration was characteristic for cells grown at pH 5 and 6, the lowest one at 7. At high and also at low pH more active respiration was found which can be considered as a protective response on proton stress. Respiration was not completely inhibited with potassium cyanide. Photosynthesis was the most effective at pH 6; lower and higher pH decreased photosynthetic efficiency. pH affected more the growth rate than the photosynthesis.

Place, publisher, year, edition, pages
2001. Vol. 46, no 6, 549-554 p.
Keyword [en]
photosynthesis, motility, pH, Euglena gracilis
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:miun:diva-2234DOI: 10.1007/BF02818001ISI: 000173927100014PubMedID: 11898347Scopus ID: 2-s2.0-0035753018Local ID: 1377OAI: oai:DiVA.org:miun-2234DiVA: diva2:27266
Available from: 2008-09-30 Created: 2008-09-30 Last updated: 2016-10-17Bibliographically approved

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