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Title: The Early ANTP Gene Repertoire: Insights from the Placozoan Genome

Journal Article · · PLoS ONE
 [1];  [2];  [3];  [4];  [5];  [5]
  1. Stiftung Tieraerztliche Hochschule Hannover (Germany); Yale Univ., New Haven, CT (United States)
  2. Stiftung Tieraerztliche Hochschule Hannover (Germany)
  3. Univ. of California, Berkeley, CA (United States)
  4. USDOE Joint Genome Institute (JGI), Walnut Creek, CA (United States); Univ. of California, Berkeley, CA (United States)
  5. Yale Univ., New Haven, CT (United States)

The evolution of ANTP genes in the Metazoa has been the subject of conflicting hypotheses derived from full or partial gene sequences and genomic organization in higher animals. Whole genome sequences have recently filled in some crucial gaps for the basal metazoan phyla Cnidaria and Porifera. Here we analyze the complete genome of Trichoplax adhaerens, representing the basal metazoan phylum Placozoa, for its set of ANTP class genes. The Trichoplax genome encodes representatives of Hox/ParaHox-like, NKL, and extended Hox genes. This repertoire possibly mirrors the condition of a hypothetical cnidarian-bilaterian ancestor. The evolution of the cnidarian and bilaterian ANTP gene repertoires can be deduced by a limited number of cis-duplications of NKL and “extended Hox” genes and the presence of a single ancestral “ProtoHox” gene.

Research Organization:
USDOE Joint Genome Institute (JGI), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER); National Science Foundation (NSF); Human Frontier Science Program; National Institutes of Health (NIH)
Grant/Contract Number:
AC02-05CH11231; RR19895; RGP 0221
OSTI ID:
1904079
Journal Information:
PLoS ONE, Vol. 3, Issue 8; ISSN 1932-6203
Publisher:
Public Library of ScienceCopyright Statement
Country of Publication:
United States
Language:
English

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Unconventional Functions of Muscles in Planarian Regeneration journal December 2017
A clustered set of three Sp-family genes is ancestral in the Metazoa: evidence from sequence analysis, protein domain structure, developmental expression patterns and chromosomal location journal March 2010
The homeodomain complement of the ctenophore Mnemiopsis leidyi suggests that Ctenophora and Porifera diverged prior to the ParaHoxozoa journal October 2010
Concatenated Analysis Sheds Light on Early Metazoan Evolution and Fuels a Modern “Urmetazoon” Hypothesis journal January 2009
Comparative genomics and the nature of placozoan species journal July 2018
Are Hox Genes Ancestrally Involved in Axial Patterning? Evidence from the Hydrozoan Clytia hemisphaerica (Cnidaria) journal January 2009
New Insights into Placozoan Sexual Reproduction and Development journal May 2011
Diversity, Phylogeny and Expression Patterns of Pou and Six Homeodomain Transcription Factors in Hydrozoan Jellyfish Craspedacusta sowerbyi journal April 2012
Expression of NK genes that are not part of the NK cluster in the onychophoran Euperipatoides rowelli (Peripatopsidae) text January 2019
Never Ending Analysis of a Century Old Evolutionary Debate: “Unringing” the Urmetazoon Bell journal February 2016
Evolution of Homeobox Gene Clusters in Animals: The Giga-Cluster and Primary vs. Secondary Clustering journal April 2016