Taxonomic placement of Tanaecium mutabile (Bignonieae, Bignoniaceae) based on new morphological data and phylogenetic analyses

Phytotaxa ◽  
2020 ◽  
Vol 438 (5) ◽  
pp. 289-300
Author(s):  
ANNELISE FRAZÃO ◽  
LÚCIA G. LOHMANN
Keyword(s):  
Molecular Markers ◽  
Molecular Phylogeny ◽  
Phylogenetic Analyses ◽  
Morphological Data ◽  
New Combination ◽  
Similar Species ◽  
Taxonomic Studies

During ongoing taxonomic studies with Tanaecium, we identified some morphological disparities between Tanaecium mutabile and the remaining species of the genus. Here, we reconstruct a molecular phylogeny of Tanaecium based on two molecular markers (i.e., the chloroplast ndhF and the nuclear pepC), and a broad sampling of members of the Arrabidaea and allies clade, where Tanaecium is included. In the newly constructed phylogeny, T. mutabile is nested within Fridericia, indicating the need for taxonomic arrangements. These findings are further supported by new morphological data (e.g., venation angle, domatia type, and corolla curvature). Based on these results, we formally transfer T. mutabile into Fridericia, and propose the necessary new combination. We further designate a new lectotype for Arrabidaea muehlbergiana, a synonym of T. mutabile. Morphological comparisons between T. mutabile and other morphologically similar species are presented.

scholarly journals Phylogeny of the African ball-rolling dung beetle genus Epirinus Reiche (Coleoptera:Scarabaeidae:Scarabaeinae)

2011 ◽  
Vol 25 (3) ◽  
pp. 197 ◽  
Author(s):  
S. Mlambo ◽  
C. L. Sole ◽  
C. H. Scholtz
Keyword(s):  
Molecular Phylogeny ◽  
Observational Studies ◽  
Phylogenetic Analyses ◽  
Dung Beetle ◽  
Nuclear Genes ◽  
Morphological Data ◽  
Phylogenetic Hypothesis ◽  
Ball Rolling ◽  
Morphology Analysis ◽  
Divergence Dates

Recent phylogenetic analyses have pointed to the dung beetle genus Epirinus as the putative African ancestral roller group. Consequently, we tested the roller status of species in the genus with observational studies and constructed a molecular phylogeny based on partial sequences of two mitochondrial and two nuclear genes for 16 of 29 species. Tested species were confirmed to be dung rollers. Monophyly of the genus was confirmed, lending support to the synonymy of the wingless genus Endroedyantus with Epirinus. Moreover, the phylogenetic hypothesis was found to have a similar topology with a previously published one based on morphological data. A combined molecular and morphology analysis showed congruence between the molecular and morphological datasets. The loss of flight in some species and estimated divergence dates within Epirinus are discussed.

Leaf anatomy and macro-morphological data support a new species of the legume genus Chamaecrista (Fabaceae, Caesalpinioideae) from Goiás, Brazil

Phytotaxa ◽  
2020 ◽  
Vol 443 (2) ◽  
pp. 167-178
Author(s):  
RAMON GUEDES MATOS ◽  
ALESSANDRO OLIVEIRA DE SOUZA ◽  
IGOR SOARES SANTOS ◽  
MARCOS JOSÉ DA SILVA
Keyword(s):  
New Species ◽  
Leaf Anatomy ◽  
Morphological Data ◽  
Similar Species ◽  
Conservation Assessment ◽  
Environmental Preferences ◽  
Data Support ◽  
Midwest Region ◽  
Taxonomic Studies ◽  
A New Species

Analysis of Brazilian collections and foreign herbaria, specially of those from the Midwest region of Brazil for taxonomic studies on Chamaecrista sect. Absus subsect. Absus developed by the authors, resulted in a discover a new species. Chamaecrista barnebyana is here described, illustrated, and commented on its distribution, conservation assessment, including environmental preferences, flowering and fruiting, and position systematic. Additionally, it is compared with morphologically similar species using macro-morphological and foliar anatomy characteristics.

Generic concepts within hornworts: historical review, contemporary insights and future directions

2005 ◽  
Vol 18 (1) ◽  
pp. 7 ◽  
Author(s):  
D. Christine Cargill ◽  
Karen S. Renzaglia ◽  
Juan Carlos Villarreal ◽  
R. Joel Duff
Keyword(s):  
Molecular Markers ◽  
Molecular Analysis ◽  
Historical Review ◽  
Morphological Data ◽  
Historical Overview ◽  
Future Directions ◽  
Classification Schemes ◽  
Molecular Studies ◽  
Taxonomic Studies ◽  
Rbcl Sequences

Although the hornworts (anthocerotes) are a relatively small assemblage of approximately 150 species, generic boundaries and relationships within the group are controversial. The four prevailing classification schemes are based mainly on morphology and show little congruency. Here we set the foundation for contemporary phylogenetic and taxonomic studies by presenting an historical overview of generic concepts within the anthocerotes. An overview of recent morphological and molecular studies that concentrate on hornworts points to intuitive, novel relationships and a degree of diversity hitherto unknown in the group. Phylogenetically informative characters at the morphological level are identified, with emphasis on newly acquired ultrastructural data. A recent molecular analysis based on rbcL sequences is presented and the levels of suitability of several molecular markers to answer phylogenetic questions within the group are explored. On-going intensive studies that sample a wider range of species and utilise multiple genes and comprehensive morphological data are likely to revolutionise interpretations of the taxonomic relationships and character evolution within hornworts.

scholarly journals A revision of the genus Menonvillea (Cremolobeae, Brassicaceae)

Phytotaxa ◽  
2014 ◽  
Vol 162 (5) ◽  
pp. 241 ◽  
Author(s):  
Diego Leonel Salariato ◽  
Fernando Omar Zuloaga ◽  
Ihsan Ali Al-Shehbaz
Keyword(s):  
Phylogenetic Analyses ◽  
Taxonomic Revision ◽  
Morphological Data ◽  
New Combination ◽  
Specific Rank

Following the most recent phylogenetic analyses of Menonvillea, an updated taxonomic revision of the genus based on molecular and morphological data is presented here. Menonvillea currently includes 24 species distributed in Argentina and Chile. Three new sections, sects. Cuneata, Menonvillea, and Scapigera, are proposed. One subspecies is raised to the specific rank, and the new combination M. marticorenae is proposed. Descriptions, keys to all taxa, updated geographical distributions, maps, and illustrations are provided. Lectotypes for M. filifolia, M. minima, M. purpurea, and M. flexuosa f. tomentosa are designated.

scholarly journals Expanded phylogenetic analyses of the class Heterotrichea (Ciliophora, Postciliodesmatophora) using five molecular markers and morphological data

2016 ◽  
Vol 95 ◽  
pp. 229-246 ◽  
Author(s):  
Noemi M. Fernandes ◽  
Thiago da Silva Paiva ◽  
Inácio D. da Silva-Neto ◽  
Martin Schlegel ◽  
Carlos G. Schrago
Keyword(s):  
Molecular Markers ◽  
Phylogenetic Analyses ◽  
Morphological Data

scholarly journals Phylogenetic and morphological studies in Xylodon (Hymenochaetales, Basidiomycota) with the addition of four new species

MycoKeys ◽  
2019 ◽  
Vol 47 ◽  
pp. 97-137 ◽  
Author(s):  
Janett Riebesehl ◽  
Eugene Yurchenko ◽  
Karen K. Nakasone ◽  
Ewald Langer
Keyword(s):  
New Species ◽  
New Zealand ◽  
Sequence Data ◽  
Phylogenetic Analyses ◽  
Its Region ◽  
Morphological Data ◽  
Similar Species ◽  
New Combinations ◽  
Line Drawings ◽  
Morphological Studies

Xylodon (Hymenochaetales, Basidiomycota) is the largest segregate genus of Hyphodontia s.l. Based on molecular and morphological data, 77 species are accepted in Xylodon to date. Phylogenetic analyses of ITS and 28S sequences, including 38 new ITS and 20 28S sequences of Xylodon species, revealed four species new to science. The new taxa X.exilis, X.filicinus, X.follis and X.pseudolanatus from Taiwan, Nepal, Réunion, Belize, and USA are described and illustrated. In addition, species concepts for Odontiavesiculosa from New Zealand and Xylodonlanatus from U.S.A. are revised and the new name X.vesiculosus is proposed. Phylogenetic analyses of the ITS region placed X.spathulatus, X.bubalinus and X.chinensis in a strongly supported clade and demonstrated that they are conspecific. Palifer and Odontiopsis are synonymised under Xylodon based on morphological and sequence data. The following new combinations are proposed: X.erikssonii, X.gamundiae, X.hjortstamii, X.hyphodontinus, X.septocystidiatus and X.verecundus. Line drawings of X.cystidiatus, X.hyphodontinus, X.lanatus and X.vesiculosus, as well as photographs of X.raduloides basidiomata, are provided. A key to X.lanatus and similar species is presented.

A molecular phylogeny and infrageneric classification for Kunzea (Myrtaceae) inferred from rDNA ITS and ETS sequences

2010 ◽  
Vol 23 (5) ◽  
pp. 309 ◽  
Author(s):  
P. J. de Lange ◽  
R. D. Smissen ◽  
S. J. Wagstaff ◽  
D. J. Keeling ◽  
B. G. Murray ◽  
...  
Keyword(s):  
New Zealand ◽  
Molecular Phylogeny ◽  
Phylogenetic Analyses ◽  
New Combination ◽  
Nrdna Its ◽  
Infrageneric Classification ◽  
Rdna Its ◽  
Western Australian

Circumscription and infrageneric classification of Kunzea is evaluated after phylogenetic analyses of nrDNA ITS and ETS sequences. Kunzea is monophyletic if the K. ericoides complex and the monotypic Angasomyrtus are included. The genus can be divided into western Australian, eastern Australian, and eastern Australian plus New Zealand clades. Angasomyrtus has greater affinity with the eastern Kunzea species, despite its western Australian endemic status. A new infrageneric classification is proposed, recognising four subgenera, with a further division into sections within two of these. A new combination in Kunzea is made for Angasomyrtus.

scholarly journals A second species of Pseuduvaria in China: the identity of the enigmatic species Meiogyne kwangtungensis

PhytoKeys ◽  
2021 ◽  
Vol 172 ◽  
pp. 1-15
Author(s):  
Qing-Long Wang ◽  
Hui Zhang ◽  
Yun-Yun Shao ◽  
Zhu-Nian Wang ◽  
Bine Xue
Keyword(s):  
Phylogenetic Analyses ◽  
Morphological Data ◽  
New Combination ◽  
Full Description ◽  
Key To Species ◽  
Molecular Phylogenetic ◽  
Generic Affinity ◽  
Floral Characters ◽  
First Time ◽  
Made In

Meiogyne kwangtungensis is a rare species endemic to Hainan, China, known just from two fruiting collections made in the 1930s. Although it was published under the name Meiogyne in 1976, it was suggested that it might be better placed within Pseuduvaria or Mitrephora. For decades, this species was never collected again, thus its true generic affinity remained unresolved due to the lack of flowers. During a field exploration in Hainan, we re-discovered this species and collected a flowering specimen for the first time. The flower immediately confirmed its affinity with Pseuduvaria. Phylogenetic analyses of five chloroplast regions (psbA-trnH, trnL-F, matK, rbcL, and atpB-rbcL; ca. 4.2 kb, 70 accessions) also unambiguously placed Meiogyne kwangtungensis in the Pseuduvaria clade (PP = 1.00, ML BS = 99%). Morphologically, it is most similar to P. multiovulata which is endemic to Myanmar and Thailand, both with often-paired flowers, long pedicels and short peduncles, and often 1–2 monocarps. However, it differs in having smaller flowers with kidney-shaped glands on the inner petals, fewer stamens and carpels, smaller ovoid monocarps with an apicule and fewer seeds. On the basis of the combined molecular phylogenetic and morphological data, we propose a new combination, Pseuduvaria kwangtungensis (P.T.Li) Qing L.Wang & B.Xue. A full description including floral characters and a color plate are provided here for this species. A key to species in the genus Pseuduvaria in China is also provided.

The identity of Polyalthia florulenta (Annonaceae): a second species of Wangia in China

Phytotaxa ◽  
2016 ◽  
Vol 283 (2) ◽  
pp. 163 ◽  
Author(s):  
BINE XUE ◽  
YUN-HONG TAN ◽  
XING-ER YE
Keyword(s):  
Phylogenetic Analyses ◽  
Flower Morphology ◽  
Morphological Data ◽  
New Combination ◽  
Glandular Tissue ◽  
Key To Species ◽  
Diagnostic Characters ◽  
Molecular Phylogenetic

The taxonomic placement of Polyalthia florulenta C.Y.Wu ex P.T.Li has not been clarified. Phylogenetic analyses of eight chloroplast regions (matK, ndhF, ndhF-rpl32, psbA-trnH, rbcL, rpl32-trnL, trnL-F and ycf1; ca. 9.2 kb, 66 taxa) unambiguously placed Polyalthia florulenta in a subclade of tribe Miliuseae, sister to Wangia saccopetaloides. Polyalthia flourulenta shares several diagnostic characters with Wangia saccopetaloides, including leaf-opposed inflorescences, sepaloid outer petals and saccate inner petals with basal glandular tissue. It differs from Wangia saccopetaloides in having membranous leaf laminas, single-flowered inflorescences, subglobose single-seeded monocarps, and spiniform endosperm rumination. On the basis of the combined molecular phylogenetic and morphological data, we propose a new combination, Wangia florulenta (C.Y.Wu ex P.T.Li) B.Xue. As the protologue description was based on material lacking mature flowers, we provide a detailed description of flower morphology. A key to species in the genus Wangia is also provided.

scholarly journals Respiratory syncytial virus B sequence analysis reveals a novel early genotype

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Juan C. Muñoz-Escalante ◽  
Andreu Comas-García ◽  
Sofía Bernal-Silva ◽  
Daniel E. Noyola
Keyword(s):  
Molecular Markers ◽  
Respiratory Syncytial Virus ◽  
Maximum Likelihood ◽  
Respiratory Infections ◽  
Phylogenetic Analyses ◽  
Detection Methods ◽  
Sequence Alignments ◽  
Multiple Sequence ◽  
Individual Gene ◽  
Syncytial Virus

AbstractRespiratory syncytial virus (RSV) is a major cause of respiratory infections and is classified in two main groups, RSV-A and RSV-B, with multiple genotypes within each of them. For RSV-B, more than 30 genotypes have been described, without consensus on their definition. The lack of genotype assignation criteria has a direct impact on viral evolution understanding, development of viral detection methods as well as vaccines design. Here we analyzed the totality of complete RSV-B G gene ectodomain sequences published in GenBank until September 2018 (n = 2190) including 478 complete genome sequences using maximum likelihood and Bayesian phylogenetic analyses, as well as intergenotypic and intragenotypic distance matrices, in order to generate a systematic genotype assignation. Individual RSV-B genes were also assessed using maximum likelihood phylogenetic analyses and multiple sequence alignments were used to identify molecular markers associated to specific genotypes. Analyses of the complete G gene ectodomain region, sequences clustering patterns, and the presence of molecular markers of each individual gene indicate that the 37 previously described genotypes can be classified into fifteen distinct genotypes: BA, BA-C, BA-CC, CB1-THB, GB1-GB4, GB6, JAB1-NZB2, SAB1, SAB2, SAB4, URU2 and a novel early circulating genotype characterized in the present study and designated GB0.

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