scholarly journals Delimiting the genera of the Ficinia Clade (Cypereae, Cyperaceae) based on molecular phylogenetic data

PeerJ ◽  
2021 ◽  
Vol 9 ◽  
pp. e10737
Author(s):  
A. Muthama Muasya ◽  
Isabel Larridon
Keyword(s):  
Phylogenetic Position ◽  
Pragmatic Approach ◽  
Nuclear Markers ◽  
Diagnostic Features ◽  
The Core ◽  
Molecular Phylogenetic ◽  
Taxonomic Changes ◽  
Plastid Markers ◽  
Molecular Phylogenetic Data ◽  
Level Identification

Generic delimitations in the Ficinia Clade of tribe Cypereae are revisited. In particular, we aim to establish the placement of annual species currently included in Isolepis of which the phylogenetic position is uncertain. Phylogenetic inference is based on two nuclear markers (ETS, ITS) and five plastid markers (the genes matK, ndhF, rbcL and rps16, the trnL intron and trnL-F spacer) data, analyzed using model based methods. Topologies based on nuclear and plastid data show incongruence at the backbone. Therefore, the results are presented separately. The monophyly of the smaller genera (Afroscirpoides, Dracoscirpoides, Erioscirpus, Hellmuthia, Scirpoides) is confirmed. However, Isolepis is paraphyletic as Ficinia is retrieved as one of its clades. Furthermore, Ficinia is paraphyletic if I. marginata and allies are excluded. We take a pragmatic approach based on the nuclear topology, driven by a desire to minimize taxonomic changes, to recircumscribe Ficinia to include the annual Isolepis species characterized by cartilaginous glumes and formally include all the Isolepis species inferred outside the core Isolepis clade. Consequently, the circumscription of Isolepis is narrowed to encompass only those species retrieved as part of the core Isolepis clade. Five new combinations are made (Ficinia neocapensis, Ficinia hemiuncialis, Ficinia incomtula, Ficinia leucoloma, Ficinia minuta). We present nomenclatural summary at genus level, identification keys and diagnostic features.

scholarly journals Confirmation of species independence and affinity of Musa huangbaioa (Musaceae) – rare endemic banana of China – according to the molecular phylogenetic data

Turczaninowia ◽  
2021 ◽  
Vol 24 (2) ◽  
pp. 56-66
Author(s):  
Elena M. Arnautova ◽  
Nikolay N. Nosov ◽  
Alexander I. Shmakov ◽  
Lei Shi ◽  
X.-Ch. Zhang ◽  
...  
Keyword(s):  
Phylogenetic Analysis ◽  
Central America ◽  
Natural Environment ◽  
Morphological Features ◽  
Phylogenetic Position ◽  
Chinese Journal ◽  
Molecular Phylogenetic ◽  
Irregular Form ◽  
Rare Endemic ◽  
Molecular Phylogenetic Data

In this article, we research the phylogenetic position of the rare endemic banana, Musa huangbaioa, which was described only in Chinese journal in 1987. This banana was found at the foot of the Mount Emei in Sichuan Province and has remarkable morphological features, e. g., undulated petiole margins, ribbed fruits and irregular form of the seeds, which are rather unusual in the genus and distinguish it from all other species. In addition, due to its uncertain affinity, we researched the position of M. huangbaioa in the Musaceae family with the aid of molecular phylogenetic analysis of two marker sequences, nrITS and trnL–trnF. We found that this species belongs to the large and rather complicated group of Chinese bananas, M. basjoo–M. itinerans clade. According to the ITS data, M. huangbaioa is monophyletic with one M. basjoo specimen that was cultivated in Central America. Probably, this fact represents that this species can be modern hybrid with one of the genomes inherited from M. basjoo s. l. The whole group M. basjoo–M. itinerans, which M. huangbaioa belongs to, is well separated within the sect. Musa and could be prone to frequent hybridizations in the natural environment; it requires an additional research for more precise differentiation of the group.

scholarly journals Usnea nipparensis and U. sinensis form a ‘species pair ’ presuming morphological, chemical and molecular phylogenetic data

2020 ◽  
pp. 265-271
Author(s):  
Yoshihito Ohmura
Keyword(s):  
Phylogenetic Relationships ◽  
Phylogenetic Trees ◽  
Its Rdna ◽  
Phylogenetic Position ◽  
Species Pair ◽  
Rdna Sequences ◽  
Phylogenetic Data ◽  
Close Relationship ◽  
Molecular Phylogenetic ◽  
Molecular Phylogenetic Data

Phylogenetic relationships between Usnea nipparensis and U. sinensis, caperatic acid containing Usnea species, were examined based on ITS rDNA, and the phylogenetic position of U. nipparensis was inferred based on multi-locus gene analysis using ITS rDNA, nuLSU, and MCM7. Although U. nipparensis and U. sinensis have a sorediate and an esorediate shrubby thallus, respectively, and in general look quite different, other detailed morphological and chemical features are similar. Analysis of the ITS rDNA sequences suggests their close relationship, but also confirms the independence of both species, and that they most likely form a ‘species pair’ based on morphological, chemical and molecular phylogenetic data. Phylogenetic trees based on both multi-locus gene and ITS rDNA alone strongly support that U. nipparensis and U. angulata belong to the same clade.

Systematics of the palisade trapdoor spiders (Euoplos) of south-eastern Queensland (Araneae : Mygalomorphae : Idiopidae): four new species distinguished by their burrow entrance architecture

2019 ◽  
Author(s):  
Jeremy D. Wilson ◽  
Michael G. Rix ◽  
Robert J. Raven ◽  
Daniel J. Schmidt ◽  
Jane M. Hughes
Keyword(s):  
Short Range ◽  
Habitat Preferences ◽  
Species Level ◽  
Key To Species ◽  
Nuclear Markers ◽  
Mitochondrial Markers ◽  
South Eastern ◽  
Burrow Entrance ◽  
Molecular Phylogenetic ◽  
Level Identification

Within the spiny trapdoor spider genus Euoplos Rainbow exists a group of species from south-eastern Queensland that create unusual ‘palisade’ burrow entrances. Despite their intriguing burrows, the group was only recently circumscribed, and all species within it were undescribed. In this study, by undertaking a molecular phylogenetic analysis of two mitochondrial markers and seven nuclear markers, we confirm that the palisade trapdoor spiders, here formally named the ‘turrificus-group’, are monophyletic. We further recognise four species based on morphological, molecular and behavioural characters: E. crenatus, sp. nov., E. goomboorian, sp. nov., E. thynnearum, sp. nov. and E. turrificus, sp. nov. Morphological taxonomic data for each species are presented alongside information on their distribution, habitat preferences and burrow architecture. A key to species within the turrificus-group is also provided. The unusual burrow entrances of these spiders, which project out from the surrounding substrate, are found to exhibit structural autapomorphies, which allow species-level identification. Consequently, we include features of burrow architecture in our key and species diagnoses. This provides a non-intrusive method for distinguishing species in the field. Finally, we conclude that all species within the turrificus-group are likely to represent short-range endemic taxa. http://zoobank.org/urn:lsid:zoobank.org:pub:F2E042DC-DA14-4751-A48B-A367ABC272D9

A New and Expanded Phylogenetic Analysis of Hyptidinae (Ocimeae-Lamiaceae)

2021 ◽  
Vol 46 (4) ◽  
pp. 1086-1094
Author(s):  
José Floriano Barêa Pastore ◽  
Guilherme Medeiros Antar ◽  
Arthur de Souza Soares ◽  
Félix Forest ◽  
Raymond Mervyn Harley
Keyword(s):  
Phylogenetic Analysis ◽  
New Combination ◽  
Phylogenetic Position ◽  
Phylogenetic Study ◽  
Generic Delimitation ◽  
Taxonomic Changes ◽  
Plastid Markers ◽  
Pollen Release ◽  
Almost All ◽  
Explosive Mechanism

Abstract— Hyptidinae, ca. 400 species, is an important component of Neotropical vegetation formations. Members of the subtribe possess flowers arranged in variously modified bracteolate cymes and nutlets with an expanded areole and all share a unique explosive mechanism of pollen release, except for Asterohyptis. In a recent phylogenetic study, the group had its generic delimitations rearranged with the recognition of 19 genera in the subtribe. Although the previous phylogenetic analysis covered almost all the higher taxa in the subtribe, it lacked a broader sampling at the species level. Here we present a new expanded phylogenetic analysis for the subtribe comprising 153 accessions of Hyptidinae sequenced for the nuclear nrITS, nrETS, and waxy regions and the plastid markers trnL-F, trnS-G, trnD-T, and matK. Our results widely support the previous phylogenetic results with some changes in the support and relationship between genera. It also uncovers the need for a new combination of Eriope machrisae in Hypenia and the phylogenetic position of Hyptis sect. Rhytidea, which was demonstrated to be part of Mesosphaerum. The generic delimitation in Hyptidinae is discussed, and we recommend that further studies with more markers are needed to confirm the monophyly of Hyptidendron and Mesosphaerum, as well as to support taxonomic changes on the infrageneric delimitation within Hyptis s. s.

scholarly journals Iheyaspira bathycodon new species (Vetigastropoda: Trochoidea: Turbinidae: Skeneinae) from the Von Damm Vent Field, Mid-Cayman Spreading Centre, Caribbean

2012 ◽  
Vol 93 (4) ◽  
pp. 1017-1024 ◽  
Author(s):  
Verity Nye ◽  
Jon Copley ◽  
Katrin Linse ◽  
Sophie Plouviez
Keyword(s):  
New Species ◽  
16S Rdna ◽  
Hydrothermal Vent ◽  
18S Rdna ◽  
Hydrothermal Vents ◽  
Phylogenetic Position ◽  
Faunal Composition ◽  
Molecular Phylogenetic ◽  
Morphological Differences ◽  
Molecular Phylogenetic Data

Iheyaspira bathycodon sp. nov. is described from the Von Damm Vent Field on the world's deepest spreading centre, the Mid-Cayman Spreading Centre (MCSC), Caribbean, at 2300 m depth. The new species is defined and illustrated from 11 specimens, with brief notes on habitat and known distribution. Molecular phylogenetic data from partial COI mDNA, 16S rDNA and nuclear 18S rDNA regions are used to analyse the species’ phylogenetic position and its morphology is compared with previously described skeneid and vent taxa. The new species is distinguished from the most closely allied vent species, Iheyaspira lequios Okutani, Sasaki & Tsuchida, 2000 by morphological differences in radula diagnosis and appendage structure of the head-foot. Iheyaspira bathycodon sp. nov. is the tenth turbinid to be described from a hydrothermal-vent environment and the second species to be named from recently discovered hydrothermal vents on the MCSC. Determining the faunal composition of assemblages at the vent fields of the MCSC will help to elucidate the vent biogeography of the region.

A new species ofLebbeus(Crustacea: Decapoda: Caridea: Hippolytidae) from the Von Damm Vent Field, Caribbean Sea

2012 ◽  
Vol 93 (3) ◽  
pp. 741-751 ◽  
Author(s):  
Verity Nye ◽  
Jon Copley ◽  
Sophie Plouviez ◽  
Cindy Lee Van Dover
Keyword(s):  
New Species ◽  
Hydrothermal Vents ◽  
Caribbean Sea ◽  
Phylogenetic Position ◽  
Caridean Shrimp ◽  
The Pacific ◽  
Molecular Phylogenetic ◽  
The Pacific Ocean ◽  
A New Species ◽  
Molecular Phylogenetic Data

A new species of the hippolytid shrimp genusLebbeusWhite, 1847 is described from the Von Damm Vent Field (VDVF) on the Mid-Cayman Spreading Centre, Caribbean Sea, at 2294 m water depth.Lebbeus virentovasp. nov. is defined and illustrated from seven specimens, with brief notes on its distribution and habitat. Molecular phylogenetic data from the COI mDNA region are used to analyse the species’ phylogenetic position, and its morphology is compared with previously described species. This new species represents the second family of caridean shrimp to be reported from the VDVF.Lebbeus virentovasp. nov. is the eighth member of the genus to be described from hydrothermal vents and appears to be the first hippolytid shrimp at a vent field known from outside the Pacific Ocean.

On the placement of Coleanthus subtilis and the subtribe Coleanthinae within Poaceae by new molecular phylogenetic data

Phytotaxa ◽  
2020 ◽  
Vol 468 (3) ◽  
pp. 243-274
Author(s):  
ALEXANDER A. GNUTIKOV ◽  
NIKOLAI N. NOSOV ◽  
ELIZAVETA O. PUNINA ◽  
NINA S. PROBATOVA ◽  
ALEXANDER V. RODIONOV
Keyword(s):  
Phylogenetic Analysis ◽  
Morphological Features ◽  
Molecular Phylogenetic Analysis ◽  
Phylogenetic Position ◽  
Chloroplast Genes ◽  
Monophyletic Clade ◽  
Morphological Studies ◽  
Molecular Phylogenetic ◽  
The Relationship ◽  
Molecular Phylogenetic Data

Phylogenetic position of the unique grass genus Coleanthus within the tribe Poeae s. str. is discussed based on molecular phylogenetic analysis of the marker sequences, ITS and trnL–trnF. Moreover, taxa more or less related to Coleanthus were involved in our study for the maximal accuracy of the molecular phylogenetic analysis. Subtribe Coleanthinae (=Puccinelliinae) is monophyletic according to both datasets, nuclear and chloroplast genes, that probably shows certain evolutionary distance from other Poeae s. str. We confirmed the results of previous morphological studies that placed Coleanthus close to the genus Phippsia but at the same time we have not found any evidences of the affinity between the genus Phippsia and the second putative ancestor, Deschampsia. The clade which contains Coleanthus and Phippsia occupies the sister position to all other genera of the subtribe Coleanthinae. The genus Phippsia produces hybrids with Puccinellia, ×Pucciphippsia, but the relationship obtained by our data is far more distant that was considered before from its morphological features. The genus Puccinellia forms a single monophyletic clade—sister to the genus Sclerochloa and former Colpodium s. l. (Paracolpodium, Catabrosella) which are monophyletic with Catabrosa. In partial contradiction to previous research (Soreng et al. 2015)—we found that the subtribe Coleanthinae is rather distant from two-chromosome grasses in ITS analysis though chloroplast genes show the sister position of the species from the 2-chromosome grasses group, Colpodium versicolor (2n = 4), to Coleanthinae. Also we detected multiple reticulation events in the tribe Poeae s. str. and some of them—within the subtribe Coleanthinae. This can explain an uncertain position of the two-chromosome grasses in relation to Coleanthinae.

scholarly journals In the midst of theory and practice: a foreword

2020 ◽  
pp. 1-5
Author(s):  
Hannes Peltonen ◽  
Knut Traisbach
Keyword(s):  
Social World ◽  
World Society ◽  
Theory And Practice ◽  
Pragmatic Approach ◽  
The Core ◽  
Critical Engagement ◽  
The Social ◽  
The Status

Abstract This foreword frames the Symposium in two ways. It summarises the core themes running through the nine ‘meditations’ in The Status of Law in World Society. Moreover, it places these themes in the wider context of Kratochwil's critical engagement with how we pursue knowledge of and in the social world and translate this knowledge into action. Ultimately, also his pragmatic approach cannot escape the tensions between theory and practice. Instead, we are in the midst of both.

Soil and litter nematode diversity of Mount Hamiguitan, the Philippines, with description of Bicirronema hamiguitanense n. sp. (Rhabditida: Bicirronematidae)

Nematology ◽  
2015 ◽  
Vol 17 (3) ◽  
pp. 325-344 ◽  
Author(s):  
Xue Qing ◽  
Wim Bert ◽  
Hanne Steel ◽  
Joeseph Quisado ◽  
Irma Tandingan De Ley
Keyword(s):  
New Species ◽  
Molecular Data ◽  
The Philippines ◽  
Phylogenetic Position ◽  
Species Status ◽  
Diagnostic Features ◽  
Lateral Field ◽  
Nematode Diversity ◽  
Common Group

The nematode diversity in soil and litter was investigated on Mount Hamiguitan, the Philippines, along four eco-habitats from elevations of 75-1600 m a.s.l. A total of 155 and 467 nematodes were identified to 39 and 62 genera from litter and soil, respectively. The nematode assemblages and diversity did not show any relation to eco-habitat or elevation. Bacterivorous nematodes were the most common group (37.5%). Acrobeloides was most abundant from the soil and Aphelenchoides from the litter. Bicirronema hamiguitanense n. sp. is herein described based on morphology, morphometrics and molecular data. The new species has the following diagnostic features: a wide lateral field one-fifth of its body diam. with four incisures forming two ornamented ridges; gubernaculum with proximal thickening; spicules (35-38 μm) and gubernaculum (18-20 μm) longer than B. caledoniense; and with 37 molecular autapomorphies supporting its new species status. The phylogenetic position of the new species within Cephalobomorpha is discussed.

Floral ontogeny of Aeschynomene falcata and A. sensitiva (Leguminosae: Papilionoideae) supports molecular phylogenetic data

2012 ◽  
Vol 299 (3) ◽  
pp. 499-513 ◽  
Author(s):  
Diana Salles Sampaio ◽  
Maria Cecília de Chiara Moço ◽  
Jorge Ernesto Araujo Mariath
Keyword(s):  
Floral Ontogeny ◽  
Phylogenetic Data ◽  
Molecular Phylogenetic ◽  
Molecular Phylogenetic Data
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