Phylogenetic position and mitochondrial genome evolution of ‘orphan’ eukaryotic lineages DOI Creative Commons
Vasily V. Zlatogursky, Vittorio Boscaro, Gordon Lax

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2025, Volume and Issue: unknown

Published: April 16, 2025

Summary The overall shape of the tree eukaryotes has been brought into focus by large-scale phylogenomic analyses, highlighting a small number highly diverse clades, or ‘supergroups’ 1-4 . A handful so-called ‘orphan’ lineages, however, branch in uncertain positions outside known supergroups, leaving some areas unresolved. Subsets four such orphan groups, provorans 5 , meteorids 6 hemimastigophorans 7 and telonemids 8,9 occasionally together analyses 6,10,11 available mitochondrial genomes from two them are similarly gene-rich 5,6,12 altogether raising possibility that these lineages form single clade with ancestrally mitochondria. Unfortunately, they currently underrepresented seldom – if ever included same analysis. Despite fact have studied for far longer than others, their position remains unstable 10,13,14 no genome telonemid culture is available. Here, we characterize transcriptome newly described telonemid, Microkorses curacao gen. et sp. nov. We find mitochondria also gene-rich, but different genes retained meteorids. Our show provorans, hemimastigophorans, well-supported previously unrecognized supergroup, here dubbed ‘prometheids’, while within an existing haptists. Overall, our several groups individually fail to be placed confidence actually fit neatly emerging framework eukaryotic relationships once more representatives sampled.

Language: Английский

Phylogenetic position and mitochondrial genome evolution of ‘orphan’ eukaryotic lineages DOI Creative Commons
Vasily V. Zlatogursky, Vittorio Boscaro, Gordon Lax

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2025, Volume and Issue: unknown

Published: April 16, 2025

Summary The overall shape of the tree eukaryotes has been brought into focus by large-scale phylogenomic analyses, highlighting a small number highly diverse clades, or ‘supergroups’ 1-4 . A handful so-called ‘orphan’ lineages, however, branch in uncertain positions outside known supergroups, leaving some areas unresolved. Subsets four such orphan groups, provorans 5 , meteorids 6 hemimastigophorans 7 and telonemids 8,9 occasionally together analyses 6,10,11 available mitochondrial genomes from two them are similarly gene-rich 5,6,12 altogether raising possibility that these lineages form single clade with ancestrally mitochondria. Unfortunately, they currently underrepresented seldom – if ever included same analysis. Despite fact have studied for far longer than others, their position remains unstable 10,13,14 no genome telonemid culture is available. Here, we characterize transcriptome newly described telonemid, Microkorses curacao gen. et sp. nov. We find mitochondria also gene-rich, but different genes retained meteorids. Our show provorans, hemimastigophorans, well-supported previously unrecognized supergroup, here dubbed ‘prometheids’, while within an existing haptists. Overall, our several groups individually fail to be placed confidence actually fit neatly emerging framework eukaryotic relationships once more representatives sampled.

Language: Английский

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