Evolutionary analysis of mitogenomes from parasitic and free-living flatworms

PloS One
Eduard SolàMarta Riutort

Abstract

Mitochondrial genomes (mitogenomes) are useful and relatively accessible sources of molecular data to explore and understand the evolutionary history and relationships of eukaryotic organisms across diverse taxonomic levels. The availability of complete mitogenomes from Platyhelminthes is limited; of the 40 or so published most are from parasitic flatworms (Neodermata). Here, we present the mitogenomes of two free-living flatworms (Tricladida): the complete genome of the freshwater species Crenobia alpina (Planariidae) and a nearly complete genome of the land planarian Obama sp. (Geoplanidae). Moreover, we have reanotated the published mitogenome of the species Dugesia japonica (Dugesiidae). This contribution almost doubles the total number of mtDNAs published for Tricladida, a species-rich group including model organisms and economically important invasive species. We took the opportunity to conduct comparative mitogenomic analyses between available free-living and selected parasitic flatworms in order to gain insights into the putative effect of life cycle on nucleotide composition through mutation and natural selection. Unexpectedly, we did not find any molecular hallmark of a selective relaxation in mitogenomes of parasitic...Continue Reading

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Citations

Apr 13, 2017·Genome Research·José M Martín-DuránAndreas Hejnol
May 14, 2020·F1000Research·Rafael Zardoya
Jun 7, 2018·Biology Open·Matheus Salgado de OliveiraNádia Maria Rodrigues de Campos Velho
May 28, 2017·BMC Genomics·Bernhard EggerBastian Fromm
Mar 7, 2021·International Journal of Molecular Sciences·Liina KinkarNeil D Young
Nov 11, 2021·International Journal for Parasitology·Thomas H CribbRodney A Bray

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Datasets Mentioned

BETA
KP208776
KP208777

Methods Mentioned

BETA
PCR
454 sequencing

Software Mentioned

Geneious Pro
sffinfo
DOGMA
tRNAscan
TREMATODA
tBLASTn
Glimmer
454 SFF Tools
SeqMan
GenDecoder

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