Growth, survival and biochemical alteration ofEuglena gracilis in medium limited in sulfur
✍ Scribed by Buetow, D. E.
- Book ID
- 102880593
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1965
- Tongue
- English
- Weight
- 518 KB
- Volume
- 66
- Category
- Article
- ISSN
- 0095-9898
No coin nor oath required. For personal study only.
✦ Synopsis
The sulfur requirement for growth and survival of Euglena gracilis is satisfied by sulfate or by certain organic sources, especially methionine. When deprived of sulfur, cultures remain fully viable for about 1.5 days. By 15 days of sulfur deprivation, viability is reduced to 25%. Sulfur is found in significant quantity in all the major cellular fractions of Euglena including the hot-TCA-soluble fraction. During external sulfur deprivation, sulfur is redistributed within the cell in order to maintain "structural protein." Cells which survive apparently are able to regulate the utilization and redistribution of their depleted sulfur reserves.