A Classification of the Fern GenusTectaria(Tectariaceae: Polypodiales) Based on Molecular and Morphological Evidence

2018 ◽  
Vol 103 (2) ◽  
pp. 188-199 ◽  
Author(s):  
Liang Zhang ◽  
Li-Bing Zhang
Keyword(s):  
Morphological Evidence

scholarly journals An updated classification of the jumping plant-lice (Hemiptera: Psylloidea) integrating molecular and morphological evidence

2021 ◽  
Vol 736 ◽  
pp. 137-182
Author(s):  
Daniel Burckhardt ◽  
David Ouvrard ◽  
Diana M. Percy
Keyword(s):  
New Species ◽  
New Genus ◽  
Molecular Data ◽  
Data Sources ◽  
Morphological Evidence ◽  
Sampling Strategies ◽  
Molecular Studies ◽  
Family Level ◽  
A New Species

The classification of the superfamily Psylloidea is revised to incorporate findings from recent molecular studies, and to integrate a reassessment of monophyla primarily based on molecular data with morphological evidence and previous classifications. We incorporate a reinterpretation of relevant morphology in the light of the molecular findings and discuss conflicts with respect to different data sources and sampling strategies. Seven families are recognised of which four (Calophyidae, Carsidaridae, Mastigimatidae and Triozidae) are strongly supported, and three (Aphalaridae, Liviidae and Psyllidae) weakly or moderately supported. Although the revised classification is mostly similar to those recognised by recent authors, there are some notable differences, such as Diaphorina and Katacephala which are transferred from Liviidae to Psyllidae. Five new subfamilies and one new genus are described, and one secondary homonym is replaced by a new species name. A new or revised status is proposed for one family, four subfamilies, four tribes, seven subtribes and five genera. One tribe and eight genera / subgenera are synonymised, and 32 new and six revised species combinations are proposed. All recognised genera of Psylloidea (extant and fossil) are assigned to family level taxa, except for one which is considered a nomen dubium.

A Global Phylogenomic Study of the Thelypteridaceae

2021 ◽  
Vol 46 (4) ◽  
pp. 891-915
Author(s):  
Susan Fawcett ◽  
Alan R. Smith ◽  
Michael Sundue ◽  
J. Gordon Burleigh ◽  
Emily B. Sessa ◽  
...  
Keyword(s):  
Morphological Characters ◽  
Morphological Evidence ◽  
Phylogenetic Studies ◽  
The Family ◽  
Likelihood Analysis ◽  
Single Genus ◽  
The Subject ◽  
Recent Classification ◽  
Phylogenomic Study

Abstract— The generic classification of the Thelypteridaceae has been the subject of much controversy. Proposed taxonomic systems have varied from recognizing the approximately 1200 species in the family within the single genus Thelypteris, to systems favoring upwards of 30 genera. Insights on intrafamilial relationships, especially for neotropical taxa, have been gained from recent phylogenetic studies; however, in the most recent classification, 10 of 30 recognized genera are either non-monophyletic or untested. We sequenced 407 nuclear loci for 621 samples, representing all recognized genera and approximately half the known species diversity. These were analyzed using both maximum likelihood analysis of a concatenated matrix and multi-species coalescent methods. Our phylogenomic results, informed by recently published morphological evidence, provide the foundation for a generic classification which recircumscribed 14 genera and recognized seven new genera. The 37 monophyletic genera sampled demonstrate greater geographic coherence than previous taxonomic concepts suggested. Additionally, our results demonstrate that certain morphological characters, such as frond division, are evolutionarily labile and are thus inadequate for defining genera.

Validation of the 2016 Revision to the World Health Organization (WHO) Classification of Myelodysplastic Syndromes with Diploid Karyotype

Blood ◽  
2016 ◽  
Vol 128 (22) ◽  
pp. 4319-4319
Author(s):  
Rashmi Kanagal-Shamanna ◽  
Juliana E. Hidalgo Lopez ◽  
Hye Ryoun Kim ◽  
Zhuang Zuo ◽  
Michelle Janania Martinez ◽  
...  
Keyword(s):  
Platelet Count ◽  
Mutation Analysis ◽  
Research Funding ◽  
Who Classification ◽  
Older Age ◽  
World Health ◽  
Morphological Evidence ◽  
Low Grade ◽  
Transformation Rate

Abstract Introduction: The revised 2016 WHO classification of MDS has highlighted the value of morphologic evaluation and mutation analysis of bone marrow (BM)/ peripheral blood (PB) to further refine prognostication. These highlights include: (1) increased emphasis on lineage dysplasia compared with cytopenias; (2) objective enumeration of blast % for reproducibility; (3) accurate quantification of ring sideroblasts (RS); and (4) mutation analysis for SF3B1 in cases showing RS >5% and TP53 in MDS with isolated del(5q). Most of the proposed changes are within the categories of low-grade MDS. In this study, we evaluated 264 cases of MDS with diploid karyotype using the 2016 WHO system. Methods: We selected consecutive cases of MDS with diploid karyotype with BM morphological evidence of dysplasia and reclassified using the 2016 WHO system. Mutation analysis for SF3B1 (exons 14 and 15), SRSF2 (exon 1) and U2AF1 (exons 2 and 6) was performed using Sanger sequencing. Patient data were collected from the medical record. The Kaplan-Meier method was used to estimate OS and time-to-AML transformation. The associations between outcome and clinical and pathological parameters were determined using univariate and multivariate Cox proportional hazards regression models. Results: The study group included 264 MDS patients: 168 (64%) men and 96 (36%) women with a median age of 66.9 years (range, 28.3 - 89.1). The median hemoglobin, absolute neutrophil count (ANC), platelet count, and white blood cell (WBC) count were 10.0 g/dL, 1.9 x 109/L, 114.5 x 109/L, and 3.5 x 109/L, respectively. The median BM blast percentage was 2.5; 74% of the patients had < 5% BM blasts. MDS sub-classification according to the 2008 WHO classification was: RCUD, n=5 (2%); RA, n=9 (3%); RARS, n=16 (6%); RCMD, n=152 (58%); RAEB-1, n=56 (21%); RAEB-2, n=20 (8%), and MDS-U, n=6 (2%). Reclassification using the 2016 WHO classification: MDS with single lineage dysplasia (MDS-SLD, n=14, 5%), MDS with multi-lineage dysplasia (MDS-MLD, n=112, 42%), MDS with RS (including single lineage and multi-lineage dysplasia, MDS-RS, n=56, 21%); MDS-EB1, n=56 (21%), MDS-EB2, n=20 (8%) and MDS-U, n=6 (2%). Grading of fibrosis using reticulin/ trichrome stains showed absent-minimal fibrosis (grades 0-1) in 56/85 (66%) and moderate-severe fibrosis (2-3) in 29/85 (34%) cases. Mutation analysis for splicing factors was performed on 15 cases. Ten cases with 0-5% RS showed 2 cases each with SRSF2 and U2AF1 mutations. No cases had SF3B1 mutation. 5 cases with >5% RS showed SF3B1 mutations in 4 cases and 1 case each with SRSF2 and U2AF1 mutations. Over a median follow-up duration of 22.4 months (range, 0-156.8), 128 (48%) patients died. The median OS was 46.1 months (95% CI: 32.3, 58.4). Patients categorized as MDS-SLD by 2016 WHO had the best OS (156.8 months), followed by MDS-RS (58.7 months), MDS-MLD (46.3 months) and MDS-EB (21.2 months) (p<0.001). Older age, lower hemoglobin, lower ANC, lower platelet count, ≥5% BM blasts, MDS-EB1 and MDS-EB2 by 2016 WHO were significantly associated with worse OS (≤0.044). Accounting for all significant measures, age, hemoglobin, MDS-EB1 and MDS-EB2 remained significantly associated with OS.Sixteen patients transformed to AML; the median time-to-AML transformation was not reached; 5-year AML transformation rate was 88%. Patients with ≥ 5% BM blasts (p=0.056) and older age (p=0.063) tended to have a higher AML transformation rate. Conclusions: Morphological evaluation of BM/PB (for dysplasia, % BM blasts and RS) provides additional prognostic value and continues to be a critical component for evaluation of MDS patients. Molecular studies for splicing factor mutations are ongoing on all samples with >1% RS. Figure Figure. Disclosures Jabbour: ARIAD: Consultancy, Research Funding; Pfizer: Consultancy, Research Funding; Novartis: Research Funding; BMS: Consultancy.

Variation in song patterns of Antipodean Teleogryllus species (Orthoptera: Gryllidae) and a proposed phenetic classification

1970 ◽  
Vol 48 (4) ◽  
pp. 797-801 ◽  
Author(s):  
C. Madsen ◽  
V. R. Vickery ◽  
J. Nowosielski
Keyword(s):  
Cytological Study ◽  
Morphological Evidence ◽  
Teleogryllus Commodus ◽  
Phenetic Classification ◽  
Distance Coefficient

The stridulations of eight sample populations of Teleogryllus commodus servillei (Saussure) and T. oceanicus (Le Guillou) were recorded and analyzed. Sokal's "distance coefficient" formula was used to derive a phenetic classification of the populations. The analysis indicates the same relationships as were previously indicated, by Chen et al. (1967) on morphological evidence, and by Lim et al. (1969) on cytological study.

A classification of Lejeuneaceae (Marchantiophyta) based on molecular and morphological evidence

Phytotaxa ◽  
2013 ◽  
Vol 100 (1) ◽  
pp. 6 ◽  
Author(s):  
S. ROBBERT GRADSTEIN
Keyword(s):  
Molecular Methods ◽  
Morphological Evidence ◽  
The Family ◽  
Molecular Phylogenetic

Lejeuneaceae are the largest family of the liverworts with at least one thousand species in 68 currently accepted genera. The number of genera is much lower than accepted previously and was reduced based on recent molecular work. This paper present a first classification of Lejeuneaceae based on integrated molecular-phylogenetic and morphological evidence. The family is subdivided into two broad subfamilies, Ptychanthoideae (19 genera) and Lejeuneoideae (49 genera). Ptychanthoideae are not further subdivided whereas Lejeuneoideae are classified into three tribes: Brachiolejeuneeae (8 genera), Symbiezidieae (new; 1 genus) and Lejeuneeae (40 genera). Lejeuneeae, the largest tribe in the family, are classified into eight subtribes: Ceratolejeuneinae (2 genera), Cheilolejeuneinae (4 genera), Cololejeuneinae (12 genera), Cyclolejeuneinae (3 genera), Drepanolejeuneinae (2 genera), Echinolejeuneinae (3 genera), Lejeuneinae (5 genera) and Lepidolejeuneinae (2 genera). Seven genera of Lejeuneeae have not yet been studied by molecular methods and are not classified.

Phylogeny and a new tribal classification of Opiliaceae (Santalales) based on molecular and morphological evidence

2017 ◽  
Vol 56 (1) ◽  
pp. 56-66 ◽  
Author(s):  
Chi-Toan Le ◽  
Bing Liu ◽  
Russell L. Barrett ◽  
Li-Min Lu ◽  
Jun Wen ◽  
...  
Keyword(s):  
Morphological Evidence ◽  
Tribal Classification

Phylogeny and classification of the tribe Calopterini (Coleoptera, Lycidae)

2004 ◽  
Vol 35 (4) ◽  
pp. 437-447 ◽  
Author(s):  
Milada Bocakova
Keyword(s):  
Morphological Evidence ◽  
Consensus Tree ◽  
Strict Consensus Tree ◽  
Cladistic Analyses

AbstractThe phylogeny of lycid tribe Calopterini is examined in the light of adult morphological evidence. Representatives from each of the Calopterini genus - group taxa and genera Dictyoptera, Lygistopterus, Conderis, Plateros, and Lycus are examined. An investigation of Calopterini phylogeny is presented here, based on 33 characters and 24 supraspecific terminal taxa, representing genera whose monophyly was implicitly assumed. Four cladistic analyses were performed with equal and successive weights and multistate characters treated as additive and non-additive, respectively. The preferred hypothesis, a strict consensus tree generated using successive weighting and unordered characters yields the scheme of relationships (Eurrhacina + (Calopterina + (Cyrtopteron + Mesopteron + Falsocaenia + Acroleptina))). On the basis of these results, two new subtribes Eurrhacina and Acroleptina are proposed.

scholarly journals Hippocampus whitei Bleeker, 1855, a senior synonym of the southern Queensland seahorse H. procerus Kuiter, 2001: molecular and morphological evidence (Teleostei, Syngnathidae)

ZooKeys ◽  
2019 ◽  
Vol 824 ◽  
pp. 109-133 ◽  
Author(s):  
Graham Short ◽  
David Harasti ◽  
Healy Hamilton
Keyword(s):  
Morphological Character ◽  
Sequence Data ◽  
New South ◽  
Taxonomic Status ◽  
Morphological Evidence ◽  
Intraspecific Divergence ◽  
Mitochondrial Coi ◽  
South Wales ◽  
Eastern Australia

The taxonomic status of the seahorse Hippocampusprocerus Kuiter, 2001, type locality Hervey Bay, QLD, Australia, was re-examined based on its strong morphological similarity and geographical proximity to its congener H.whitei Bleeker, 1855, a species recorded in ten estuaries of New South Wales, Australia. Kuiter (2001) distinguished H.procerus from H.whitei by a taller coronet, marginally lower meristics, and spinier physiognomy. Meristic, morphometric, and key diagnostic morphological character comparisons from vouchered specimens of the two purported species collected from Sydney Harbour, Nelson Bay, Port Stephens, NSW and Hervey Bay, Bundaberg, and Moreton Bay, QLD did not show diagnostic differences to support species-level classification of H.procerus. Furthermore, partial mitochondrial COI sequence data from specimens sampled from known geographical distributions in NSW and Southport, QLD failed to discriminate between populations as a result of shared haplotypes, and revealed an average intraspecific divergence of 0.002%. Hippocampusprocerus is hereby placed in the synonymy of H.whitei; a redescription is provided, with a revised record of its range across eastern Australia.

Generic classification of the Verrucariaceae (Ascomycota) based on molecular and morphological evidence: recent progress and remaining challenges

Taxon ◽  
2009 ◽  
Vol 58 (1) ◽  
pp. 184-208 ◽  
Author(s):  
Cécile Gueidan ◽  
Sanja Savić ◽  
Holger Thüs ◽  
Claude Roux ◽  
Christine Keller ◽  
...  
Keyword(s):  
Recent Progress ◽  
Morphological Evidence

Phylogeny of the Neotropical genus Gephyrocharax (Characiformes: Characidae: Stevardiinae), with remarks on the tribe Stevardiini

2017 ◽  
Vol 182 (4) ◽  
pp. 808-829 ◽  
Author(s):  
James A Vanegas-Ríos
Keyword(s):  
Sister Group ◽  
Data Matrix ◽  
Morphological Evidence ◽  
Phylogenetic Study ◽  
Adult Males ◽  
Current Definition ◽  
The Family ◽  
Recent Classification ◽  
Definition Of

AbstractStevardiinae, which consists of 326 species and 44 genera, is a monophyletic subfamily within the family Characidae. In a recent classification of the subfamily, the tribe Stevardiini was expanded from three (Corynopoma, Gephyrocharax and Pterobrycon) to six genera by the addition of Chrysobrycon, Hysteronotus and Pseudocorynopoma. However, no morphological evidence has supported this definition of the tribe and the monophyly of Gephyrocharax. To address these issues, a phylogenetic study of most stevardiins focusing on Gephyrocharax was conducted. A data matrix including 532 characters and 213 taxa (73 stevardiines, 19 of which were stevardiins) was processed using maximum parsimony in TNT 1.5. All characters were analysed under extended implied weighting, exploring 21 k values. A strict consensus (comprising the most stables trees obtained) was used as the final topology. The results support the current definition of Stevardiini, as well as the monophyly of Chrysobrycon, Gephyrocharax and Pterobrycon. Corynopoma was obtained as the sister group of Gephyrocharax, the latter being phylogenetically diagnosed by two synapomorphies associated with caudal-fin morphology of adult males. The following interspecific relationships within Gephyrocharax are hypothesised: (G. martae ((G. chocoensis (G. major (G. atracaudatus, G. intermedius))) (G. venezuelae (G. sinuensis (G. valencia (G. caucanus (G. melanocheir, G. torresi)))))))).

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