We are analyzing https://link.springer.com/article/10.1007/s004380100577.

Title:
Mosses share mitochondrial group II introns with flowering plants, not with liverworts | Molecular Genetics and Genomics
Description:
Extant bryophytes are regarded as the closest living relatives of the first land plants, but relationships among the bryophyte classes (mosses, liverworts and hornworts) and between them and other embryophytes have remained unclear. We have recently found that plant mitochondrial genes with positionally stable introns are well suited for addressing questions of plant phylogeny at a deep level. To explore further data sets we have chosen to investigate the mitochondrial genes nad4 and nad7, which are particularly rich in intron sequences. Surprisingly, we find that in these genes mosses share three group II introns with flowering plants, but none with the liverwort Marchantia polymorpha or other liverworts investigated here. In mitochondria of Marchantia, nad7 is a pseudogene containing stop codons, but nad7 appears as a functional mitochondrial gene in mosses, including the isolated genus Takakia. We observe the necessity for strikingly frequent C-to-U RNA editing to reconstitute conserved codons in Takakia when compared to other mosses. The findings underline the great evolutionary distances among the bryophytes as the presumptive oldest division of land plants. A scenario involving differential intron gains from fungal sources in what are perhaps the two earliest diverging land plant lineages, liverworts and other embryophytes, is discussed. With their positionally stable introns, nad4 and nad7 represent novel marker genes that may permit a detailed phylogenetic resolution of early clades of land plants.
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Keywords {🔍}

article, mitochondrial, plant, mosses, introns, plants, access, liverworts, nad, privacy, cookies, content, group, land, data, information, publish, search, genes, open, log, find, journal, research, genetics, genomics, share, flowering, pruchner, nassal, schindler, explore, intron, marchantia, editing, related, discover, springer, optional, personal, including, parties, policy, track, molecular, cite, knoop, bryophytes, embryophytes, positionally,

Topics {✒️}

conserved rna–target modules group ii introns month download article/chapter plant mitochondrial genes article molecular genetics rna editing genes mosses share related subjects functional mitochondrial gene related paralogues finds positionally stable introns privacy choices/manage cookies full article pdf mitochondrial genes nad4 reconstitute conserved codons plant phylogeny categorizing 161 plant liverwort marchantia polymorpha european economic area scope submit manuscript closest living relatives strikingly frequent c great evolutionary distances presumptive oldest division detailed phylogenetic resolution early clades check access hornwort genome albert-einstein-allee 11 instant access conditions privacy policy accepting optional cookies isolated genus takakia main content log journal finder publish article log land plants genomics aims intron sequences intron mobility article cite article pruchner privacy policy explore personal data liverworts investigated books a optional cookies information manage preferences

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         headline:Mosses share mitochondrial group II introns with flowering plants, not with liverworts
         description: Extant bryophytes are regarded as the closest living relatives of the first land plants, but relationships among the bryophyte classes (mosses, liverworts and hornworts) and between them and other embryophytes have remained unclear. We have recently found that plant mitochondrial genes with positionally stable introns are well suited for addressing questions of plant phylogeny at a deep level. To explore further data sets we have chosen to investigate the mitochondrial genes nad4 and nad7, which are particularly rich in intron sequences. Surprisingly, we find that in these genes mosses share three group II introns with flowering plants, but none with the liverwort Marchantia polymorpha or other liverworts investigated here. In mitochondria of Marchantia, nad7 is a pseudogene containing stop codons, but nad7 appears as a functional mitochondrial gene in mosses, including the isolated genus Takakia. We observe the necessity for strikingly frequent C-to-U RNA editing to reconstitute conserved codons in Takakia when compared to other mosses. The findings underline the great evolutionary distances among the bryophytes as the presumptive oldest division of land plants. A scenario involving differential intron gains from fungal sources in what are perhaps the two earliest diverging land plant lineages, liverworts and other embryophytes, is discussed. With their positionally stable introns, nad4 and nad7 represent novel marker genes that may permit a detailed phylogenetic resolution of early clades of land plants.
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            Plant Genetics and Genomics
            Human Genetics
            Microbial Genetics and Genomics
            Animal Genetics and Genomics
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      headline:Mosses share mitochondrial group II introns with flowering plants, not with liverworts
      description: Extant bryophytes are regarded as the closest living relatives of the first land plants, but relationships among the bryophyte classes (mosses, liverworts and hornworts) and between them and other embryophytes have remained unclear. We have recently found that plant mitochondrial genes with positionally stable introns are well suited for addressing questions of plant phylogeny at a deep level. To explore further data sets we have chosen to investigate the mitochondrial genes nad4 and nad7, which are particularly rich in intron sequences. Surprisingly, we find that in these genes mosses share three group II introns with flowering plants, but none with the liverwort Marchantia polymorpha or other liverworts investigated here. In mitochondria of Marchantia, nad7 is a pseudogene containing stop codons, but nad7 appears as a functional mitochondrial gene in mosses, including the isolated genus Takakia. We observe the necessity for strikingly frequent C-to-U RNA editing to reconstitute conserved codons in Takakia when compared to other mosses. The findings underline the great evolutionary distances among the bryophytes as the presumptive oldest division of land plants. A scenario involving differential intron gains from fungal sources in what are perhaps the two earliest diverging land plant lineages, liverworts and other embryophytes, is discussed. With their positionally stable introns, nad4 and nad7 represent novel marker genes that may permit a detailed phylogenetic resolution of early clades of land plants.
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      dateModified:
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      pageEnd:613
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         Plant mitochondrial DNA Group II introns RNA editing Mosses Liverworts
         Plant Genetics and Genomics
         Human Genetics
         Microbial Genetics and Genomics
         Animal Genetics and Genomics
         Biochemistry
         general
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