Fig. 3.

Phylochemogenetic profiling of Hydra with DAC-2-25. Various species and strains of Hydra were tested for their ability to respond to DAC-2-25 and alsterpaullone (ALP). All strains responded to ALP. All strains of H. vulgaris responded to DAC-2-25, except for H. vulgaris Zürich. H. magnipapillata strain 105 was categorized as a ‘partial responder’ (blue): buds that formed during treatment of this strain had many ectopic tentacles, whereas the parent occasionally produced one ectopic tentacle. The outgroup species, Hydra viridissima, is robustly responsive to both compounds.