IDENTIFICATION OF HOMOLOGUES OF THE EMH-3 HOMEOBOX-CONTAINING GENE IN DEMOSPONGES

Authors

  • EVELYN RICHELLE-MAURER

Abstract

In the present study, we have identified and characterized homologues of the homeoboxcontaining gene EmH-3 from Ephydatia muelleri in three additional freshwater sponges: Eunapius fragilis, Spongilla lacustris and Trochospongilla horrida. They were designated EmH-3Efr, EmH-3Sl and EmH-3Th. They exhibited a great conservation of genomic and amino acid sequences, exon/intron structure and expression patterns with the EmH-3 gene, which strongly suggested that they have the same function in sponge development. Phylogenetic analyses have shown a grouping of E. muelleri and E. fluviatilis, E. fragilis and S. lacustris, T. horrida being outside both groups. They also showed that EmH-3 and its homologues were most closely related to the Tlx/Hox11 family of higher metazoans. They are probably representatives of this family as they display the family-specific signature and, as are the members of this family, are involved in cell multiplication and differentiation.

Downloads

Published

2018-05-23

Issue

Vol. 68 (2004): Sponge Science in the new Millennium “Papers contributed to the VI International Sponge Conference“ Rapallo (Italy) 29th September - 5th October 2002

Section

Articoli

License

Authors who publish in this journal accept the following conditions:

  •  Authors maintain the rights to their work and give the journal the right of first publication, simultaneously licensed under a Creative Common International License 4.0: Attribution – Noncommercial – Share-Alike, which allows to share the work declaring the intellectual paternity and the first publication in this journal
  • Authors can subscribe other non exclusive license agreements to distribute the published version of their work (eg deposit it in an institutional archive or publish it in a monograph) only if they declare that the first publication was in this journal.
  • The authors can spread their work online (eg in institutional repositories or on their own website) at the end of submission process (post print version).

The journal is the owner of rights.

Authors must accept the copyright notice when submitting the proposal.