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Requirement for Thiamine Among Some Marine and Supra-Littoral Protista

Published online by Cambridge University Press:  11 May 2009

M. R. Droop
M. R. Droop
Affiliation:
Marine Station, Millport, Scotland
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Extract

The requirement for thiamine was examined in eleven marine protists of littoral, supra-littoral or neritic origin. Six were found to have an absolute requirement for the vitamin.

The thiamine-requiring Chrysophyta responded to the pyrimidine half of the vitamin, whereas the two thiamine-requiring Pyrrophyta responded to the thiazole half.

All the species requiring thiamine were auxotrophic with respect to at least one other factor (usually vitamin B12).

For half-maximal growth, species responding to pyrimidine required 100–300 mμg/1. pyrimidine or thiamine and species responding to thiazole 2000 mμg/1. thiazole or thiamine.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 37 , Issue 2 , June 1958 , pp. 323 - 329
Copyright
Copyright © Marine Biological Association of the United Kingdom 1958

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References

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