Abstract
IN two recent communications it was claimed that polyvinyl alcohol at a concentration of 0.1 per cent had a marked stimulatory effect on growth of Chlorella (increase of 50 per cent) and an even more striking effect on chlorophyll content of the cells of Chlorella and Chlamydomonas (increase of 300–400 per cent)1,2, independent of an increase in cell number. Unfortunately, these experiments are described as being carried out in “pond” water in aquaria under unspecified conditions and chlorophyll was determined in dried samples.
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ZURI, U., MAYER, A. Lack of Effect of Polyvinyl Alcohol on the Growth and Chlorophyll Content of Green Algae. Nature 201, 213 (1964). https://doi.org/10.1038/201213a0
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DOI: https://doi.org/10.1038/201213a0
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