期刊
PEERJ
卷 8, 期 -, 页码 -出版社
PEERJ INC
DOI: 10.7717/peerj.8995
关键词
Phylogenomics; Bryophytes; Compositional heterogeneity; Land plants; Substitutional saturation
资金
- FCT -Foundation for Science and Technology [UIDB/04326/2020]
- operational programme CRESC Algarve 2020
- operational programme COMPETE 2020 [EMBRC.PT ALG-01-0145-FEDER-022121, BIODATA.PT ALG-01-0145-FEDER-022231]
- FCT [PTDC/BIA-EVF/1499/2014]
- Fundação para a Ciência e a Tecnologia [PTDC/BIA-EVF/1499/2014] Funding Source: FCT
Congruence among analyses of plant genomic data partitions (nuclear, chloroplast and mitochondrial) is a strong indicator of accuracy in plant molecular phylogenetics. Recent analyses of both nuclear and chloroplast genome data of land plants (embryophytes) have, controversially, been shown to support monophyly of both bryophytes (mosses, liverworts, and hornworts) and tracheophytes (lycopods, ferns, and seed plants), with mosses and liverworts forming the Glade Setaphyta. However, relationships inferred from mitochondria are incongruent with these results, and typically indicate paraphyly of bryophytes with liverworts alone resolved as the earliest-branching land plant group. Here, we reconstruct the mitochondrial land plant phylogeny from a newly compiled data set. When among-lineage composition heterogeneity is accounted for in analyses of codon-degenerate nucleotide and amino acid data, the Glade Setaphyta is recovered with high support, and hornworts are supported as the earliest-branching lineage of land plants. These new mitochondrial analyses demonstrate partial congruence with current hypotheses based on nuclear and chloroplast genome data, and provide further incentive for revision of how plants arose on land.
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