A molecular phylogeny of bryophytes based on nucleotide sequences of the mitochondrialnad5 gene

Beckert, Susanne; Steinhäuser, S.; Muhle, Hermann; Knoop, Volker

doi:10.1007/bf01089226

Cited by 93 publications

(48 citation statements)

References 16 publications

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“…All of the 32 introns in Marchantia mtDNA, with the exception of the nad2 intron, reside at distinct positions relative to the 20 to 23 introns in angiosperm mtDNAs, suggesting that most, if not all, of the liverwort introns arose independently from their angiosperm counterparts. The distribution patterns of mitochondrial introns among basal land plants (both bryophytes and vascular plants) are consistent with this hypothesis (Malek et al, 1997;Malek and Knoop, 1998;Beckert et al, 1999;Pruchner et al, 2001). The alternative hypothesis that all of the introns in the four completely sequenced land plant mtDNAs were present in the common ancestor of all land plants and that subsequently many were lost independently in early-diverging lineages appears unlikely in light of the finding that mitochondrial introns are stable in bryophytes belonging to the same class (Beckert et al, , 2001Pruchner et al, 2001) and also in both flowering and nonflowering vascular plants Qiu et al, 1998;Vangerow et al, 1999).…”

Section: Introductionsupporting

confidence: 70%

The Mitochondrial Genome of Chara vulgaris: Insights into the Mitochondrial DNA Architecture of the Last Common Ancestor of Green Algae and Land Plants[W]

2003

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Mitochondrial DNA (mtDNA) has undergone radical changes during the evolution of green plants, yet little is known about the dynamics of mtDNA evolution in this phylum. Land plant mtDNAs differ from the few green algal mtDNAs that have been analyzed to date by their expanded size, long spacers, and diversity of introns. We have determined the mtDNA sequence of Chara vulgaris (Charophyceae), a green alga belonging to the charophycean order (Charales) that is thought to be the most closely related alga to land plants. This 67,737-bp mtDNA sequence, displaying 68 conserved genes and 27 introns, was compared with those of three angiosperms, the bryophyte Marchantia polymorpha , the charophycean alga Chaetosphaeridium globosum (Coleochaetales), and the green alga Mesostigma viride . Despite important differences in size and intron composition, Chara mtDNA strikingly resembles Marchantia mtDNA; for instance, all except 9 of 68 conserved genes lie within blocks of colinear sequences. Overall, our genome comparisons and phylogenetic analyses provide unequivocal support for a sister-group relationship between the Charales and the land plants. Only four introns in land plant mtDNAs appear to have been inherited vertically from a charalean algar ancestor. We infer that the common ancestor of green algae and land plants harbored a tightly packed, gene-rich, and relatively intron-poor mitochondrial genome. The group II introns in this ancestral genome appear to have spread to new mtDNA sites during the evolution of bryophytes and charalean green algae, accounting for part of the intron diversity found in Chara and land plant mitochondria.

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Section: Introductionsupporting

confidence: 70%

The Mitochondrial Genome of Chara vulgaris: Insights into the Mitochondrial DNA Architecture of the Last Common Ancestor of Green Algae and Land Plants[W]

2003

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“…Mesostigma and land-plant mtDNAs share no introns, and only 1 of the 32 introns in Marchantia mtDNA (18) is conserved in A. thaliana (19) and B. vulgaris mtDNAs (20), suggesting that most of the liverwort mitochondrial introns have arisen independently from those present in angiosperms. The distribution patterns of mitochondrial introns among basal land plants are consistent with this hypothesis and also indicate that all five trans-spliced introns conserved among angiosperm mtDNAs arose from cis-spliced intron homologs (21)(22)(23)(24)(25). RNA-editing events involving mainly the conversions of cytidine into uridine have been observed in the mitochondria of basal land plants and angiosperms (26)(27)(28)(29) as well as in their chloro-plasts (26,(30)(31)(32) but appear to be absent in both organelles of Marchantia and the few algae examined thus far.…”

supporting

confidence: 67%

The chloroplast and mitochondrial genome sequences of the charophyte Chaetosphaeridium globosum : Insights into the timing of the events that restructured organelle DNAs within the green algal lineage that led to land plants

Turmel

Otis

Lemieux

2002

Proc. Natl. Acad. Sci. U.S.A.

167

114

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The land plants and their immediate green algal ancestors, the charophytes, form the Streptophyta. There is evidence that both the chloroplast DNA (cpDNA) and mitochondrial DNA (mtDNA) underwent substantial changes in their architecture (intron insertions, gene losses, scrambling in gene order, and genome expansion in the case of mtDNA) during the evolution of streptophytes; however, because no charophyte organelle DNAs have been sequenced completely thus far, the suite of events that shaped streptophyte organelle genomes remains largely unknown. Here, we have determined the complete cpDNA (131,183 bp) and mtDNA (56,574 bp) sequences of the charophyte Chaetosphaeridium globosum (Coleochaetales). At the levels of gene content (124 genes), intron composition (18 introns), and gene order, Chaetosphaeridium cpDNA is remarkably similar to land-plant cpDNAs, implying that most of the features characteristic of land-plant lineages were gained during the evolution of charophytes. Although the gene content of Chaetosphaeridium mtDNA (67 genes) closely resembles that of the bryophyte Marchantia polymorpha (69 genes), this charophyte mtDNA differs substantially from its landplant relatives at the levels of size, intron composition (11 introns), and gene order. Our finding that it shares only one intron with its land-plant counterparts supports the idea that the vast majority of mitochondrial introns in land plants appeared after the emergence of these organisms. Our results also suggest that the events accounting for the spacious intergenic spacers found in land-plant mtDNAs took place late during the evolution of charophytes or coincided with the transition from charophytes to land plants.

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“…Molecular data are consistent with at least two competing hypothesis. Under the first view, hornworts would be the most ancient land plants and mosses (or mosses together with liverworts) form a clade sister to vascular plants (Malek & al., 1996;Beckert & al., 1999;Garbary, Renzaglia, 1998;Nishiyama, Kato, 1999;Renzaglia & al., 2000;. The second hypothesis suggests that the basal land plant group includes liverworts, whereby the hornworts are the youngest representatives among the bryophytes and share a common ancestor with vascular plants ( Lewis & al., 1997;Qiu & al., 1998).…”

Section: Introductionmentioning

confidence: 99%

Paraphyly of bryophytes and close relationship of hornworts and vascular plants inferred from chloroplast rDNA spacers sequence analysis

Samigullin

Yacentyuk

Degtyaryeva

et al. 2002

Arctoa, a jornal of bryology

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Phylogenetic analysis of nucleotide sequences of chloroplast rDNA internal transcribed spacer (cpITS) regions (cpITS2-4) of 14 species of liverworts, 4 species of hornworts, 20 species of mosses, 7 species of lycopods and 2 species of algae was carried out. Phylogenetic trees constructed by maximum parsimony, maximum likelihood and neighbour-joining methods indicated that bryophytes are not monophyletic. The cpITS data suggest that the hepatic lineage branches most deeply in the land plant topology and that mosses are monophyletic, forming the sister group of lycopods and hornworts. Within the mosses, a conspicuous deletion with distinct phylogenetic distribution was observed in the cpITS3 region. This deletion is absent in other land plants, including the enigmatic genus Takakia, and marks Takakia as an evolutionary lineage distinct from mosses. ÐåçþìåÏðîâåäåí ôèëîãåíåòè÷åñêèé àíàëèç íóêëåîòèäíûõ ïîñëåäîâàòåëüíîñòåé ñïåéñåðîâ õëîðîïëàñòíîé ðÄÍÊ (cpITS2-4) ó 14 âèäîâ ïå÷åíî÷íèêîâ, 4 âèäîâ àíòîöåðîòîâûõ, 20 âèäîâ ìõîâ, 7 âèäîâ ïëàóíîâèäíûõ è 2 âèäîâ õàðîâûõ âîäîðîñëåé. Ñîãëàñíî òîïîëîãèè ôèëîãåíåòè÷åñêèõ äåðåâüåâ, ðåêîíñòðóèðîâàííûõ ìåòîäàìè ìàêñèìàëüíîãî ïðàâäî-ïîäîáèÿ, áëèaeàéøåãî ñâÿçûâàíèÿ è ìàêñèìàëüíîé ýêîíîìèè, ìîõîîáðàçíûå íå ìîíîôèëåòè÷íû. Íà êëàäîãðàììàõ ñðåäè íàçåìíûõ ðàñòåíèé ïåðâûìè îòäåëÿþòñÿ âåòâè, âåäóùèå ê ïå÷åíî÷íèêàì. Ìõè ïðåäñòàþò êàê ìîíîôèëåòè÷åñêàÿ ãðóïïà, ñåñòðèíñêàÿ ê êëàäå, îáúåäèíÿþùåé ïëàóíîâèäíûå è àíòîöåðîòîâûå. Â íóêëåîòèäíîé ïîñëåäî-âàòåëüíîñòè cpITS3 ó ìõîâ îáíàðóaeåíà ïðîòÿaeåííàÿ äåëåöèÿ, îòñóòñòâóþùàÿ ó îñòàëüíûõ íàçåìíûõ ðàñòåíèé, âêëþ÷àÿ Takakia.

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A molecular phylogeny of bryophytes based on nucleotide sequences of the mitochondrialnad5 gene

Cited by 93 publications

References 16 publications

The Mitochondrial Genome of Chara vulgaris: Insights into the Mitochondrial DNA Architecture of the Last Common Ancestor of Green Algae and Land Plants[W]

The Mitochondrial Genome of Chara vulgaris: Insights into the Mitochondrial DNA Architecture of the Last Common Ancestor of Green Algae and Land Plants[W]

The chloroplast and mitochondrial genome sequences of the charophyte Chaetosphaeridium globosum : Insights into the timing of the events that restructured organelle DNAs within the green algal lineage that led to land plants

Paraphyly of bryophytes and close relationship of hornworts and vascular plants inferred from chloroplast rDNA spacers sequence analysis

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