Systematic errors in orthology inference and their effects on evolutionary analyses.

Systematic errors in orthology inference and their effects on evolutionary analyses.
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DOI:
10.1016/j.isci.2021.102110
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发表时间:
2021-02-19
期刊:
影响因子:
5.8
通讯作者:
Telford MJ
Telford MJ
中科院分区:
综合性期刊2区
文献类型:
--
作者:
Natsidis P;Kapli P;Schiffer PH;Telford MJ

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The availability of complete sets of genes from many organisms makes it possible to identify genes unique to (or lost from) certain clades. This information is used to reconstruct phylogenetic trees; identify genes involved in the evolution of clade specific novelties; and for phylostratigraphy—identifying ages of genes in a given species. These investigations rely on accurately predicted orthologs. Here we use simulation to produce sets of orthologs that experience no gains or losses. We show that errors in identifying orthologs increase with higher rates of evolution. We use the predicted sets of orthologs, with errors, to reconstruct phylogenetic trees; to count gains and losses; and for phylostratigraphy. Our simulated data, containing information only from errors in orthology prediction, closely recapitulate findings from empirical data. We suggest published downstream analyses must be informed to a large extent by errors in orthology prediction that mimic expected patterns of gene evolution. Presence of shared orthologs across species is used for evolutionary analyses We simulated realistic sets of orthologs with no gains or losses Errors predicting shared orthologs correlate with phylogenetic relationships Presence/absence datasets based on errors recapitulate findings from empirical data Biological Sciences; Evolutionary Biology; Evolutionary Processes; Evolutionary Mechanisms; Phylogenetics; Phylogeny
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