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Journal of Cell Science, Vol 21, Issue 2 261-271, Copyright © 1976 by Company of Biologists

JOURNAL ARTICLES

Spore germination promoter of Dictyostelium discoideum excreted by Aerobacter aerogenes

Y Hashimoto, Y Tanaka and T Yamada

The nutrient medium in which Aerobacter aerogenes was grown, contains a spore germination promoter (SGP) for the cellular slime mould Dictyostelium discoideum. SGP can cuase synchronous spore germination in a short time, and triggers the germination process in just a few minutes. Germination-promoting capacity of SGP decreases as it comes in contact with increasing number of spores. When spores activated by SGP are stored at 4 degrees C, they gradually return to the dormant state. SGP is comparatively heat-stable, but is unstable at pH above 10 or under 3.


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© The Company of Biologists Ltd 1976