The transcriptome of the newt Cynops orientalis provides new insights into evolution and function of sexual gene networks in sarcopterygians.

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ID: 103903
2020
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Abstract
Amphibians evolved in the Devonian period about 400 Mya and represent a transition step in tetrapod evolution. Among amphibians, high-throughput sequencing data are very limited for Caudata, due to their largest genome sizes among terrestrial vertebrates. In this paper we present the transcriptome from the fire bellied newt Cynops orientalis. Data here presented display a high level of completeness, comparable to the fully sequenced genomes available from other amphibians. Moreover, this work focused on genes involved in gametogenesis and sexual development. Surprisingly, the gsdf gene was identified for the first time in a tetrapod species, so far known only from bony fish and basal sarcopterygians. Our analysis failed to isolate fgf24 and foxl3, supporting the possible loss of both genes in the common ancestor of Rhipidistians. In Cynops, the expression analysis of genes described to be sex-related in vertebrates singled out an expected functional role for some genes, while others displayed an unforeseen behavior, confirming the high variability of the sex-related pathway in vertebrates.
Reference Key
biscotti2020thescientific Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Biscotti, Maria Assunta;Carducci, Federica;Barucca, Marco;Gerdol, Marco;Pallavicini, Alberto;Schartl, Manfred;Canapa, Adriana;Adolfi, Mateus Contar;
Journal Scientific reports
Year 2020
DOI
10.1038/s41598-020-62408-x
URL
Keywords
synteny hi-c assembly chromosome isoseq reference genome linked-reads turtle

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