Abstract:
:Pseudemydura umbrina is one of the most endangered turtle species in the world, and the imperative for its conservation is its distinctive morphology and relict status among the Chelidae. We use Illumina sequencing to obtain the complete mitogenome for resolving its uncertain phylogenetic position. A novel nuclear paralogue confounded the assembly, and resolution of the authentic mitogenome required further Sanger sequencing. The P. umbrina mitogenome is 16,414bp comprising 37 genes organized in a conserved pattern for other vertebrates. The nuclear paralogue is 547bp, 97.8% identity to the corresponding mitochondrial sequence. Particular features of the mitogenome include an nd3 174+1A frameshift, loss of DHC loop in tRNASer (AGN), and a light-strand replication initiation site in Wancy region that extends into an adjacent tRNA gene. Phylogenetic analysis showed that P. umbrina is the monotypic sister lineage to the remaining Australasian Chelidae, a lineage probably dating back to the Cretaceous.
journal_name
Mol Phylogenet Evoljournal_title
Molecular phylogenetics and evolutionauthors
Zhang X,Unmack PJ,Kuchling G,Wang Y,Georges Adoi
10.1016/j.ympev.2017.07.019subject
Has Abstractpub_date
2017-10-01 00:00:00pages
58-61eissn
1055-7903issn
1095-9513pii
S1055-7903(17)30201-4journal_volume
115pub_type
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