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

Autori

  • 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

Pubblicato

2018-05-23

Fascicolo

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

Sezione

Articoli

Licenza

Authors who publish in this journal accept the following conditions:

  • Authors mantain the rights to their work and give the journal the right of first publication, simoultaneously 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 othe 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).