ZFIN ID: ZDB-PUB-020227-3
The evolution of morphological complexity in zebrafish stripes
Mellgren, E.M. and Johnson, S.L.
Date: 2002
Source: Trends in genetics : TIG   18(3): 128-134 (Review)
Registered Authors: Johnson, Stephen L., Mellgren, Eve M.
Keywords: none
MeSH Terms:
  • Animals
  • Biological Evolution
  • Body Patterning/genetics*
  • Embryo, Nonmammalian
  • Gene Duplication
  • Gene Expression Regulation, Developmental
  • Melanocytes/physiology*
  • Morphogenesis
  • Mutation
  • Oncogene Proteins
  • Phenotype
  • Phylogeny
  • Pigments, Biological/genetics*
  • Proto-Oncogene Proteins c-kit
  • Transcription Factors/genetics
  • Zebrafish/embryology
  • Zebrafish/physiology*
PubMed: 11858836 Full text @ Trends Genet.
The zebrafish pigment stripe pattern is a complex tissue containing iridophores, xanthophores and multiple melanocyte types. Mutational analysis reveals that both ancient and recent gene duplications are involved in the generation or maintenance of the pattern complexity. Receptor tyrosine kinases kit and fms, products of an ancient gene duplication, are required in distinct types of melanocytes and xanthophores. Transcription factors mitfa and mitfb, results of a teleost-specific duplication, partition gene expression and function between different sets of melanocytes. Understanding the roles of these duplicated genes in zebrafish allows us to predict roles for their precursors in ancestral vertebrates.