Effects of pH on the growth rate, motility and photosynthesis in Euglena gracilis
Jazyk angličtina Země Spojené státy americké Médium print
Typ dokumentu časopisecké články
PubMed
11898347
DOI
10.1007/bf02818001
Knihovny.cz E-zdroje
- MeSH
- Euglena gracilis růst a vývoj fyziologie MeSH
- fotosyntéza * MeSH
- koncentrace vodíkových iontů MeSH
- kyanid draselný MeSH
- pohyb MeSH
- spotřeba kyslíku MeSH
- zvířata MeSH
- Check Tag
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- Názvy látek
- kyanid draselný MeSH
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.
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