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Browsing by Subject "DNA, Plant"
Now showing items 1-11 of 11
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A novel chloroplast gene reported for flagellate plants.
(American journal of botany, 2018-01)PREMISE OF THE STUDY:Gene space in plant plastid genomes is well characterized and annotated, yet we discovered an unrecognized open reading frame (ORF) in the fern lineage that is conserved across flagellate plants. METHODS:We ... -
An Exploration into Fern Genome Space.
(Genome Biol Evol, 2015-08-26)Ferns are one of the few remaining major clades of land plants for which a complete genome sequence is lacking. Knowledge of genome space in ferns will enable broad-scale comparative analyses of land plant genes and genomes, ... -
Evidence for reciprocal origins in Polypodium hesperium (Polypodiaceae): a fern model system for investigating how multiple origins shape allopolyploid genomes.
(American journal of botany, 2014-09-17)•Many polyploid species are composed of distinct lineages originating from multiple, independent polyploidization events. In the case of allopolyploids, reciprocal crosses between the same progenitor species can yield lineages ... -
Evolutionary relationships within the Neotropical, eusporangiate fern genus Danaea (Marattiaceae).
(Molecular phylogenetics and evolution, 2008-01)Genera within the eusporangiate fern family Marattiaceae have long been neglected in taxonomic and systematic studies. Here we present the first phylogenetic hypothesis of relationships within the exclusively Neotropical ... -
Horizontal transfer of an adaptive chimeric photoreceptor from bryophytes to ferns.
(Proceedings of the National Academy of Sciences of the United States of America, 2014-05)Ferns are well known for their shade-dwelling habits. Their ability to thrive under low-light conditions has been linked to the evolution of a novel chimeric photoreceptor--neochrome--that fuses red-sensing phytochrome and ... -
Horsetails and ferns are a monophyletic group and the closest living relatives to seed plants.
(Nature, 2001-02)Most of the 470-million-year history of plants on land belongs to bryophytes, pteridophytes and gymnosperms, which eventually yielded to the ecological dominance by angiosperms 90 Myr ago. Our knowledge of angiosperm phylogeny, ... -
Identifying multiple origins of polyploid taxa: a multilocus study of the hybrid cloak fern (Astrolepis integerrima; Pteridaceae).
(American journal of botany, 2012-11)PREMISE OF THE STUDY: Molecular studies have shown that multiple origins of polyploid taxa are the rule rather than the exception. To understand the distribution and ecology of polyploid species and the evolutionary significance ... -
Investigating deep phylogenetic relationships among cyanobacteria and plastids by small subunit rRNA sequence analysis.
(The Journal of eukaryotic microbiology, 1999-07)Small subunit rRNA sequence data were generated for 27 strains of cyanobacteria and incorporated into a phylogenetic analysis of 1,377 aligned sequence positions from a diverse sampling of 53 cyanobacteria and 10 photosynthetic ... -
Low-copy nuclear sequence data confirm complex patterns of farina evolution in notholaenid ferns (Pteridaceae).
(Molecular phylogenetics and evolution, 2019-09)Notholaenids are an unusual group of ferns that have adapted to, and diversified within, the deserts of Mexico and the southwestern United States. With approximately 40 species, this group is noted for being desiccation-tolerant ... -
The evolutionary history of ferns inferred from 25 low-copy nuclear genes.
(Am J Bot, 2015-07)UNLABELLED: • PREMISE OF THE STUDY: Understanding fern (monilophyte) phylogeny and its evolutionary timescale is critical for broad investigations of the evolution of land plants, and for providing the point of comparison ... -
Unique expression of a sporophytic character on the gametophytes of notholaenid ferns (Pteridaceae).
(American journal of botany, 2012-06)PREMISE OF THE STUDY: Not all ferns grow in moist, shaded habitats; some lineages thrive in exposed, seasonally dry environments. Notholaenids are a clade of xeric-adapted ferns commonly characterized by the presence of ...
