We are analyzing https://link.springer.com/article/10.1007/s00239-002-2324-2.

Title:
Divergent Intron Conservation in the Mitochondrial nad2 Gene: Signatures for the Three Bryophyte Classes (Mosses, Liverworts, and Hornworts) and the Lycophytes | Journal of Molecular Evolution
Description:
The slow-evolving mitochondrial DNAs of plants have potentially conserved information on the phylogenetic branching of the earliest land plants. We present the nad2 gene structures in hornworts and liverworts and in the presumptive earliest-branching vascular land plant clade, the Lycopodiopsida. Taken together with the recently obtained nad2 data for mosses, each class of bryophytes presents another pattern of angiosperm-type introns conserved in nad2: intron nad2i1 in mosses; intron nad2i3 in liverworts; and both introns, nad2i3 and nad2i4, in hornworts. The lycopods Isoetes and Lycopodium show diverging intron conservation and feature a unique novel intron, termed nad2i3b. Hence, mitochondrial introns in general are positionally stable in the bryophytes and provide significant intraclade phylogenetic information, but the nad2 introns, in particular, cannot resolve the interclade relationships of the bryophyte classes and to the tracheophytes. The necessity for RNA editing to reconstitute conserved codon entities in nad2 is obvious for all clades except the marchantiid liverworts. Finally, we find that particularly small group II introns appear as a general feature of the Isoetes chondriome. Plant mitochondrial peculiarities such as RNA editing frequency, U-to-C type of RNA editing, and small group II introns appear to be genus-specific rather than gene-specific features.
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Keywords {🔍}

article, nad, intron, mitochondrial, plant, introns, access, information, privacy, cookies, content, journal, liverworts, land, editing, data, publish, search, evolution, gene, mosses, hornworts, nadi, rna, open, ulm, log, find, research, conservation, bryophyte, classes, pruchner, beckert, muhle, conserved, phylogenetic, bryophytes, group, related, discover, springer, optional, personal, parties, policy, track, molecular, divergent, signatures,

Topics {✒️}

month download article/chapter plant mitochondrial peculiarities slow-evolving mitochondrial dnas earliest land plants molecular evolution aims rna editing frequency angiosperm-type introns conserved mitochondrial nad2 gene divergent intron conservation potentially conserved information nad2 gene structures privacy choices/manage cookies full article pdf related paralogues finds related subjects rna editing phylogenetic branching gene-specific features hornwort genome check access instant access european economic area conditions privacy policy accepting optional cookies article pruchner susanne beckert journal finder publish mitochondrial introns main content log article journal article log nad2 introns article cite information personal data privacy policy intron nad2i1 intron mobility books a intron nad2i3 optional cookies data protection manage preferences journal publish essential cookies cookies skip subscription content similar content genus-specific institution subscribe

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         headline:Divergent Intron Conservation in the Mitochondrial nad2 Gene: Signatures for the Three Bryophyte Classes (Mosses, Liverworts, and Hornworts) and the Lycophytes
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      pageEnd:271
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         Phylogenetic Information
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         Early Land
         Evolutionary Biology
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         Plant Genetics and Genomics
         Animal Genetics and Genomics
         Cell Biology
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