Browsing by Author "Rothfels, CJ"
Now showing items 1-20 of 25
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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 ... -
A plastid phylogeny of the cosmopolitan fern family cystopteridaceae (Polypodiopsida)
(Systematic Botany, 2013-06-01)Among the novel results of recent molecular phylogenetic analyses are the unexpectedly close evolutionary relationships of the genera Acystopteris, Cystopteris, and Gymnocarpium, and the phylogenetic isolation of these genera ... -
A revised family-level classification for eupolypod II ferns (Polypodiidae: Polypodiales)
(Taxon, 2012-01-01)We present a family-level classification for the eupolypod II clade of leptosporangiate ferns, one of the two major lineages within the Eupolypods, and one of the few parts of the fern tree of life where family-level ... -
A step-by-step protocol for meiotic chromosome counts in flowering plants: A powerful and economical technique revisited.
(Applications in plant sciences, 2020-04-23)Premise:Counting chromosomes is a fundamental botanical technique, yet it is often intimidating and increasingly sidestepped. Once mastered, the basic protocol can be applied to a broad range of taxa and research questions. ... -
An exploration into fern genome space
(Genome Biology and Evolution, 2015) -
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, ... -
Are there too many fern genera?
(Taxon, 2018-06-01) -
Genes Translocated into the Plastid Inverted Repeat Show Decelerated Substitution Rates and Elevated GC Content.
(Genome biology and evolution, 2016-08-25)Plant chloroplast genomes (plastomes) are characterized by an inverted repeat (IR) region and two larger single copy (SC) regions. Patterns of molecular evolution in the IR and SC regions differ, most notably by a reduced ... -
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 ... -
Infraspecific diversification of the star cloak fern (Notholaena standleyi) in the deserts of the United States and Mexico.
(American journal of botany, 2020-04-07)PREMISE:Not all ferns grow in moist and shaded habitats. One well-known example is Notholaena standleyi, a species that thrives in deserts of the southwestern United States and Mexico. This species exhibits several "chemotypes" ... -
Low-copy nuclear data confirm rampant allopolyploidy in the cystopteridaceae (Polypodiales)
(Taxon, 2014-10-01)© International Association for Plant Taxonomy (IAPT) 2014. Here we present the first nuclear phylogeny for Cystopteridaceae (Polypodiales), using the single-copy locus gapCp “short”. This phylogeny corroborates broad results ... -
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 ... -
Maidenhair ferns, adiantum, are indeed monophyletic and sister to shoestring ferns, vittarioids (Pteridaceae)
(Systematic Botany, 2016-01-01)© 2016 by the American Society of Plant Taxonomists. Across the tree of life, molecular phylogenetic studies often reveal surprising relationships between taxa with radically different morphologies that have long obscured ... -
Natural hybridization between genera that diverged from each other approximately 60 million years ago.
(Am Nat, 2015-03)A fern from the French Pyrenees-×Cystocarpium roskamianum-is a recently formed intergeneric hybrid between parental lineages that diverged from each other approximately 60 million years ago (mya; 95% highest posterior density: ... -
Next-generation polyploid phylogenetics: rapid resolution of hybrid polyploid complexes using PacBio single-molecule sequencing.
(The New phytologist, 2017-01)Difficulties in generating nuclear data for polyploids have impeded phylogenetic study of these groups. We describe a high-throughput protocol and an associated bioinformatics pipeline (Pipeline for Untangling Reticulate ... -
Phytochrome diversity in green plants and the origin of canonical plant phytochromes
(Nature communications, 2015) -
Phytochrome diversity in green plants and the origin of canonical plant phytochromes.
(Nat Commun, 2015-07-28)Phytochromes are red/far-red photoreceptors that play essential roles in diverse plant morphogenetic and physiological responses to light. Despite their functional significance, phytochrome diversity and evolution across ... -
rbcL and matK earn two thumbs up as the core DNA barcode for ferns.
(PloS one, 2011-01)BACKGROUND: DNA barcoding will revolutionize our understanding of fern ecology, most especially because the accurate identification of the independent but cryptic gametophyte phase of the fern's life history--an endeavor ... -
Revealing a cryptic fern distribution through DNA sequencing: Pityrogramma trifoliata in the Western Andes of Peru
(American Fern Journal, 2013-01-01)Fern identification usually requires the use of mature sporophytes, since attempts to identify juveniles using morphological traits often provides unsatisfactory results. Here we examined young sporophytes found among boulders ...
