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  • Title: HyBMP5-8b, a BMP5-8 orthologue, acts during axial patterning and tentacle formation in hydra.
    Author: Reinhardt B, Broun M, Blitz IL, Bode HR.
    Journal: Dev Biol; 2004 Mar 01; 267(1):43-59. PubMed ID: 14975716.
    Abstract:
    Developmental gradients play a central role in axial patterning in hydra. As part of the effort towards elucidating the molecular basis of these gradients as well as investigating the evolution of the mechanisms underlying axial patterning, genes encoding signaling molecules are under investigation. We report the isolation and characterization of HyBMP5-8b, a BMP5-8 orthologue, from hydra. Processes governing axial patterning are continuously active in adult hydra. Expression patterns of HyBMP5-8b in normal animals and during bud formation, hydra's asexual form of reproduction, were examined. These patterns, coupled with changes in patterns of expression in manipulated tissues during head regeneration, foot regeneration as well as under conditions that alter the positional value gradient indicate that the gene is active in two different processes. The gene plays a role in tentacle formation and in patterning the lower end of the body axis.
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