Competition for factors and cellular resources as a principle of pattern formation in Hydra. I. Increase of the potentials for head and bud formation and rescue of the regeneration-deficient mutant reg-16 by treatment with diacylglycerol and arachidonic acid

Article Abstract:

Examination of the formation of head and bud in different species of the genus hydra reveals that presence of a just-emerging or latent bud is responsible for the impairment of the head-forming ability in the mutant strain reg-16 of Hydra magnipapillata and in a Hydra Vulgaris strain. Low level of head-promoting factors accounts for the significant level of head inhibition in reg-16, and low efficiency to utilize the resources explains the low head activation level. The influence of dioctanoylglycerol and arachidonic acid on the pattern formation in Hydra is discussed.

Physiological aspects, Protein kinases, Hydra, Hydras, Competition (Biology)

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An evolutionary conserved role of Wnt signaling in stem cell fate decision

Article Abstract:

The contribution of Wnt signaling in stem cell fate determination in Hydractinia, an ancient cnidarian during embryonic development is studied.

Germany, Ireland, Science & research, Genetic aspects, Growth, Genetic transcription, Transcription (Genetics), Embryology, Experimental, Embryological research, Stem cells, Company growth, Coelenterata, Cnidarians

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