Coevolution of enamel, ganoin, enameloid, and their matrix SCPP genes in osteichthyans

• DOI: 10.1016/j.isci.2020.102023
• Publication Date: 2021-01-01T04:01:31Z
• Authors: Kazuhiko Kawasaki; Joseph N. Keating; Mitsushiro Nakatomi; Monique Welten; Masato Mikami; Ichiro Sasagawa; Mark N. Puttick; Philip C.J. Donoghue; Mikio Ishiyama
• Keywords: Actinopterygii

We resolve debate over the evolution of vertebrate hypermineralized tissues through analyses matrix protein-encoding secretory calcium-binding phosphoprotein (SCPP) genes and phylogenetic inference tissues. Among these genes, AMBN ENAM are found in both sarcopterygians actinopterygians, whereas AMEL SCPP5 only respectively. Actinopterygian AMBN, ENAM, expressed during formation on scales teeth: ganoin, acrodin, collar enamel gar, acrodin enameloid zebrafish. Our indicate emergence an ancestral stem-osteichthyans, ganoin emerged stem-actinopterygians true stem-sarcopterygians. Thus, originated concert with enamel, evolved association enamel. Shifts gene expression domain timing explain different propose that osteichthyans coevolved SCPP genes.