Document Detail

My favorite animal, Trichoplax adhaerens.
MedLine Citation:
PMID:  16299758     Owner:  NLM     Status:  MEDLINE    
Trichoplax adhaerens is more simply organized than any other living metazoan. This tiny marine animal looks like a irregular "hairy plate" ("tricho plax") with a simple upper and lower epithelium and some loose cells in between. After its original description by F.E. Schulze 1883, it attracted particular attention as a potential candidate representing the basic and ancestral state of metazoan organization. The lack of any kind of symmetry, organs, nerve cells, muscle cells, basal lamina and extracellular matrix originally left little doubt about the basal position of T. adhaerens. Nevertheless, the interest of zoologists and evolutionary biologists suddenly vanished for more than half a century when Trichoplax was claimed to be an aberrant hydrozoan planula larva. Recently, Trichoplax has been rediscovered as a key species for unraveling early metazoan evolution. For example, research on regulatory genes and whole genome sequencing promise insights into the genetics underlying the origin and development of basal metazoan phyla. Trichoplax offers unique potential for understanding the minimal requirements of metazoan animal organization.
Bernd Schierwater
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  BioEssays : news and reviews in molecular, cellular and developmental biology     Volume:  27     ISSN:  0265-9247     ISO Abbreviation:  Bioessays     Publication Date:  2005 Dec 
Date Detail:
Created Date:  2005-11-24     Completed Date:  2006-01-04     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8510851     Medline TA:  Bioessays     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1294-302     Citation Subset:  IM    
Copyright Information:
(c) 2005 Wiley Periodicals, Inc.
ITZ, Ecology and Evolution, Tierärztliche Hochschule Hannover, Germany.
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MeSH Terms
Gene Expression
Invertebrates / classification,  genetics,  physiology*,  ultrastructure

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