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Incongruence between primary sequence data and the distribution of a mitochondrial atp1 group II intron among ferns and horsetails. Wikström, N Pryer, KM 2020-12-05T17:38:36Z 2020-12-05T17:38:36Z 2005-09
dc.identifier S1055-7903(05)00134-X
dc.identifier.issn 1055-7903
dc.identifier.issn 1095-9513
dc.description.abstract Using DNA sequence data from multiple genes (often from more than one genome compartment) to reconstruct phylogenetic relationships has become routine. Augmenting this approach with genomic structural characters (e.g., intron gain and loss, changes in gene order) as these data become available from comparative studies already has provided critical insight into some long-standing questions about the evolution of land plants. Here we report on the presence of a group II intron located in the mitochondrial atp1 gene of leptosporangiate and marattioid ferns. Primary sequence data for the atp1 gene are newly reported for 27 taxa, and results are presented from maximum likelihood-based phylogenetic analyses using Bayesian inference for 34 land plants in three data sets: (1) single-gene mitochondrial atp1 (exon+intron sequences); (2) five combined genes (mitochondrial atp1 [exon only]; plastid rbcL, atpB, rps4; nuclear SSU rDNA); and (3) same five combined genes plus morphology. All our phylogenetic analyses corroborate results from previous fern studies that used plastid and nuclear sequence data: the monophyly of euphyllophytes, as well as of monilophytes; whisk ferns (Psilotidae) sister to ophioglossoid ferns (Ophioglossidae); horsetails (Equisetopsida) sister to marattioid ferns (Marattiidae), which together are sister to the monophyletic leptosporangiate ferns. In contrast to the results from the primary sequence data, the genomic structural data (atp1 intron distribution pattern) would seem to suggest that leptosporangiate and marattioid ferns are monophyletic, and together they are the sister group to horsetails--a topology that is rarely reconstructed using primary sequence data.
dc.language eng
dc.publisher Academic Press
dc.relation.ispartof Molecular phylogenetics and evolution
dc.relation.isversionof 10.1016/j.ympev.2005.04.008
dc.subject Equisetum
dc.subject Ferns
dc.subject Mitochondrial Proteins
dc.subject DNA, Complementary
dc.subject Sequence Alignment
dc.subject Evolution, Molecular
dc.subject Phylogeny
dc.subject Amino Acid Sequence
dc.subject Base Sequence
dc.subject Genes, Plant
dc.subject Introns
dc.subject Molecular Sequence Data
dc.title Incongruence between primary sequence data and the distribution of a mitochondrial atp1 group II intron among ferns and horsetails.
dc.type Journal article Pryer, KM|0079353 2020-12-05T17:38:33Z
pubs.begin-page 484
pubs.end-page 493
pubs.issue 3
pubs.organisational-group Trinity College of Arts & Sciences
pubs.organisational-group Biology
pubs.organisational-group Duke Science & Society
pubs.organisational-group Duke
pubs.organisational-group Initiatives
pubs.organisational-group Institutes and Provost's Academic Units
pubs.publication-status Published
pubs.volume 36
duke.contributor.orcid Pryer, KM|0000-0002-9776-6736

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