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Standardized Methods for Measuring Induction of the Heat Shock Response in Caenorhabditis elegans
Published on: July 3, 2020
Heat shock as inducer of metamorphosis in marine invertebrates
Michael Kroiher1, Michael Walther1, Stefan Berking1
1Zoologisches Institut der Universität Köln, Im Weyertal 119, W-5000, Köln 41, Federal Republic of Germany.
Abstract:
In most sessile marine invertebrates, metamorphosis is dependent on environmental cues. Here we report that heat stress is capable of inducing metamorphosis in the hydroid Hydractinia echinata. The onset of heat-induced metamorphosis is correlated with the appearance of heat-shock proteins. Larvae treated with the metamorphosis-inducing agents Cs+ or NH4+ also synthesize heat-shock proteins. In heat-shocked larvae, the internal NH4+-concentration increases. This fits the hypothesis that methylation plays a central role in control of metamorphosis. In the tunicate Ciona intestinalis, a heat shock is able to induce metamorphosis too.
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