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Journal article
Phylogenomics and the rise of the angiosperms
Angiosperms are the cornerstone of most terrestrial ecosystems and human livelihoods1,2. A robust understanding of angiosperm evolution is required to explain their rise to ecological dominance. So far, the angiosperm tree of life has been determined primarily by means of analyses of the plastid genome3,4. Many studies have drawn on...Zuntini, Alexandre R. ; Carruthers, Tom ; Maurin, Olivier ; Bailey, Paul C. ; Leempoel, Kevin …
Plant evolution, Angiosperms, Phylogenetics, Speciation, and Phylogenomics
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Journal article
An expanded circumscription of Trichocentrum (Orchidaceae: Oncidiinae) to include Grandiphyllum and Saundersia.
The genus Trichocentrum is again expanded, this time to include Grandiphyllum and Saundersia, and the respective combinations are made.Meneguzzo, Tniago E. C. ; Chase, Mark W.
Taxonomy, Orchid taxonomy, Brazilian orchids, Neotropical orchids, Trichocentrum, Cymbidieae, Orchidaceae, Orchids, Saundersia, and Grandiphyllum
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Journal article
An enlarged circumscription of Bifrenaria (Orchidaceae: Maxillariiinae).
A revised delimitation of Bifrenaria broadens the genus to include the previously accepted genera Guanchezia, Horvatia, Hylaeorchis, Rudolfiella, Scuticaria, and Teuscheria. These genera as currently circumscribed are changed to sections, and their respective species transferred or combined along with newly synonymised species. Bifrenaria sect. Stenocoryne and B. sect. Adipe are...Meneguzzo, Tniago E. C. ; Chase, Mark W.
Cymbidieae, Teuscheria, Guanchezia, Scuticaria, Orchid taxonomy, Horvatia, Brazilian orchids, Neotropical flora, Rudolfiella, and Hylaeorchis
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Journal article
Macroevolutionary trends of the Neotropical genus Ameroglossum (Linderniaceae) in rocky outcrop environments.
Santos, Amanda S. ; Almeida, Erton M. ; Aecyo, Paulo ; Costa, Lucas ; Wanderley, Artur …
Cubitanthus, South American biogeography, Stemodiopsis, Ameroglossum, Inselbergs, and Long-distance dispersal
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Journal article
A new species of Gomesa (Oncidiinae, Orchidaceae) from inselbergs in Brazilian caatinga: morphological and karyological evidence.
We describe a new species of Gomesa (Oncidiinae, Orchidaceae), Gomesa caatingana, with restricted distribution on caatinga inselbergs in Paraíba and Pernambuco States, Brazil. Morphological and karyological characters of the new species were compared with those of Gomesa flexuosa, which is morphologically the most closely related species. Differences in geographical distribution,... -
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Journal article
Tiptoe through the tulips - cultural history, molecular phylogenetics and classification of Tulipa (Liliaceae).
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Journal article
Nine new species of Australian Nicotiana (Solanaceae).
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Journal article
One hundred important questions for plant science – reflecting on a decade of plant research.
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Journal article
Gastrodia pushparaga (Orchidaceae, Epidendroideae, Gastrodieae), a new species from Sri Lanka.
N/AGopallawa, Bhathiya ; Perera, Amila ; Madola, Indrakheela ; Yakandawala, Deepthi ; Kumar, Pankaj …
Sri Lanka, Gastrodieae, Gastrodia pushparaga, Monocots, Orchidaceae, Epidendroideae, and New species
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Journal article
The allopolyploid origin(s) and diversification of New Caledonian Grevillea (Proteaceae).
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Journal article
Utilizing a phylogenetic plant classification for systematic arrangements in botanic gardens and herbaria.
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Journal article
Trends and concepts in fern classification.
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Journal article
The effect of polyploidy and hybridization on the evolution of floral colour in Nicotiana (Solanaceae).
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Journal article
The Gastrodia menghaiensis (Orchidaceae) genome provides new insights of orchid mycorrhizal interactions.
Jiang, Yan ; Hu, Xiaodi ; Yuan, Yuan ; Guo, Xuelian ; Chase, Mark W. …
Mycorrhizal roots, Mycoheterotrophy, Gastrodia menghaiensis, Genome evolution, and Orchid mycorrhizal interactions
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Journal article
Chromosome number, heterochromatin, and genome size support recent polyploid origin of the Epidendrum nocturnum group and reveal a new species (Laeliinae, Orchidaceae).
The Epidendrum nocturnum Jacq. group comprises about 60 species. Nine species occur in Brazil, predominantly in the Atlantic and Amazon Forests. The group is taxonomically complex because its species are morphologically similar and not easily distinguished. The main objective of this work is to characterize their chromosome evolution and how... -
Journal article
Genomic insights into recent species divergence in Nicotiana benthamiana and natural variation in Rdr1 gene controlling viral susceptibility.
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Journal article
Plastome phylogenomics, biogeography, and clade diversification of Paris (Melanthiaceae).
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Journal article
Molecular phylogenetics of Euploca (Boraginaceae): homoplasy in many characters, including the C4 photosynthetic pathway.
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Journal article
Plastid phylogenomics of Pleurothallidinae (Orchidaceae): Conservative plastomes, new variable markers, and comparative analyses of plastid, nuclear, and mitochondrial data.
We present the first comparative plastome study of Pleurothallidinae with analyses of structural and molecular characteristics and identification of the ten most-variable regions to be incorporated in future phylogenetic studies. We sequenced complete plastomes of eight species in the subtribe and compared phylogenetic results of these to parallel analyses of... -
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Journal article
Unexpected diversity of Australian tobacco species (Nicotiana section Suaveolentes, Solanaceae).
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Journal article
Diversification in Qinghai-Tibet Plateau: Orchidinae (Orchidaceae) clades exhibiting pre-adaptations play critical role.
Lai, Yang-Jun ; Han, Yu ; Schuiteman, André ; Chase, Mark W. ; Xu, Song-Zhi …
Diversification, Herminium, Orchidoideae, Pre-adaptation, Dispersal, Platanthera, and Habenaria
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Journal article
Plastid phylogenomics of Pleurothallidinae (Orchidaceae): Conservative plastomes, new variable markers, and comparative analyses of plastid, nuclear, and mitochondrial data.
We present the first comparative plastome study of Pleurothallidinae with analyses of structural and molecular characteristics and identification of the ten most-variable regions to be incorporated in future phylogenetic studies. We sequenced complete plastomes of eight species in the subtribe and compared phylogenetic results of these to parallel analyses of... -
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Journal article
Hundreds of nuclear and plastid loci yield novel insights into orchid relationships.
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Journal article
Expansion of Calanthe to include the species of Cephalantheropsis, Gastrorchis and Phaius (Collabieae; Orchidaceae).
Chase, Mark W. ; Christenhusz, Maarten J. M. ; Schuiteman, André
Pantropical orchid genera, orchid classification, Monocots, Epidendroidae, Calanthe, Orchid classification, and Monocots
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Journal article
Too many species: morphometrics, molecular phylogenetics and genome structure of a Brazilian species complex in Epidendrum (Laeliinae; Orchidaceae) reveal fewer species than previously thought
In this study, we analyse a species complex in Epidendrum, a mega-diverse Neotropical orchid genus, that is formed by the 11 Brazilian species of the E. difforme group. Although this group (c. 100 taxa) exhibits relatively high levels of floral variation, the Brazilian species are similar, making delimitation problematic. Here... -
Journal article
Comparative Plastid Genomics of Neotropical Bulbophyllum (Orchidaceae; Epidendroideae)
Pantropical Bulbophyllum, with ∼2,200 species, is one of the largest genera in Orchidaceae. Although phylogenetics and taxonomy of the ∼60 American species in the genus are generally well understood, some species complexes need more study to clearly delimit their component species and provide information about their evolutionary history. Previous research... -
Journal article
From the frying pan: an unusual dwarf shrub from Namibia turns out to be a new brassicalean family
Tiganophyton karasense, an evergreen dwarf shrub, is described as a new species. A new genus and family are also proposed for it in the order Brassicales. Phylogenetic analysis of DNA sequence data indicate that Tiganophyton is sister to Bataceae/Salvadoraceae, and all three sister to Koeberliniaceae. First realized to be undescribed... -
Journal article
Repetitive DNA Restructuring Across Multiple Nicotiana Allopolyploidisation Events Shows a Lack of Strong Cytoplasmic Bias in Influencing Repeat Turnover
Allopolyploidy is acknowledged as an important force in plant evolution. Frequent allopolyploidy in Nicotiana across different timescales permits the evaluation of genome restructuring and repeat dynamics through time. Here we use a clustering approach on high-throughput sequence reads to identify the main classes of repetitive elements following three allotetraploid events,... -
Journal article
Ninety-three new combinations in Euploca for species of Heliotropium section Orthostachys (Boraginaceae sensu APG)
Many new combinations are needed in Euploca, previously regarded as Heliotropium section Orthostachys, to correspond with results of our forthcoming, world-wide, molecular phylogenetic analysis. We also need these names for our many δ13C determinations that identify many Euploca species exhibiting C4 photosynthesis and show that other Euploca species are not...Frohlich, Michael W. ; Thulin, Mats ; Chase, Mark W.
carbon assimilation systems, Eudicots, Australia, and Heliotropiaceae
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Journal article
Characterization of sequence variability hotspots in Cranichideae plastomes (Orchidaceae, Orchidoideae)
This study reports complete plastome sequences for six species of Neotropical Cranichideae and focuses on identification of the most variable regions (hotspots) in this group of orchids. These structure of these six plastomes is relatively conserved, exhibiting lengths ranging between 142,599 to 154,562 bp with 36.7% GC on average and...Smidt, Eric de Camargo ; Páez, Michelle Zavala ; Vieira, Leila do Nascimento ; Viruel, Juan ; de Baura, Valter Antônio …