Evidence for a Close Phylogenetic Relationship Between Members of the Genera Frankia, Geodermatophilus, and “Blastococcus” and Emdendation of the Family Frankiaceae

1989 ◽  
Vol 11 (3) ◽  
pp. 236-242 ◽  
Author(s):  
Dittmar Hahn ◽  
Mary P. Lechevalier ◽  
Angelika Fischer ◽  
Erko Stackebrandt
Keyword(s):  
Phylogenetic Relationship ◽  
Close Phylogenetic Relationship ◽  
The Family

scholarly journals Enhanced genome annotation strategy provides novel insights on the phylogeny of Flaviviridae

2019 ◽  
Author(s):  
Adriano de Bernardi Schneider ◽  
Denis Jacob Machado ◽  
Daniel Janies
Keyword(s):  
Phylogenetic Relationship ◽  
Soybean Cyst Nematode ◽  
Phylogenetic Analyses ◽  
Optimality Criteria ◽  
Entire Family ◽  
Close Phylogenetic Relationship ◽  
The Family ◽  
Relationship Of ◽  
Reference Genomes ◽  
Annotation Strategy

The ongoing and severe public health threat of viruses of the family Flaviviridae, including dengue, hepatitis C, West Nile, yellow fever, and zika, demand a greater understanding of how these viruses evolve, emerge and spread in order to respond. Central to this understanding is an updated phylogeny of the entire family. Unfortunately, most cladograms of Flaviviridae focus on specific lineages, ignore outgroups, and rely on midpoint rooting, hampering their ability to test ingroup monophyly and estimate ingroup relationships. This problem is partly due to the lack of fully annotated genomes of Flaviviridae, which has genera with slightly different gene content, hindering genome analysis without partitioning. To tackle these problems, we developed an annotation pipeline for Flaviviridae that uses a combination of ab initio and homology-based strategies. The pipeline recovered 100% of the genes in reference genomes and annotated over 97% of the expected genes in the remaining non curated sequences. We further demonstrate that the combined analysis of genomes of all genera of Flaviviridae (Flavivirus, Hepacivirus, Pegivirus, and Pestivirus), as made possible by our annotation strategy, enhances the phylogenetic analyses of these viruses for all optimality criteria that we tested (parsimony, maximum likelihood, and posterior probability). The final tree sheds light on the phylogenetic relationship of viruses that are divergent from most Flaviviridae and should be reclassified, especially the soybean cyst nematode virus 5 (SbCNV-5) and the Tamana bat virus. We also corroborate the close phylogenetic relationship of dengue and zika viruses with an unprecedented degree of support.

scholarly journals Disjunct distribution of Uzelothripidae (Thysanoptera) new to Australia

Zootaxa ◽  
2009 ◽  
Vol 2207 (1) ◽  
pp. 67-68
Author(s):  
DESLEY J TREE
Keyword(s):  
Phylogenetic Relationship ◽  
Disjunct Distribution ◽  
The Third ◽  
Close Phylogenetic Relationship ◽  
The Family ◽  
Single Genus

The order Thysanoptera (thrips) is divided into two sub-orders, Terebrantia with eight families, and Tubulifera with just one family. Within Terebrantia, the family Uzelothripidae contains only a single genus and species, Uzelothrips scabrosus Hood. This is believed to have derived independently from an early offshoot of the thysanopteran sub-order Terebrantia (Mound & Marullo, 1996), and has no close phylogenetic relationship with any other thrips taxa (Mound & Morris 2007). The form of the wings, antennae, cephalic tentorium and female ovipositor are unlike those of any other Thysanoptera (Fig. 1). The forewings (when present) have no longitudinal veins, but have marginal cilia arising from sockets. The antennae are exceptionally long and slender, and the third segment has a unique circular sensorium ventrally near the apex. The cephalic tentorium is well developed, and the ovipositor is membranous and protusible with no developed valves (Mound et al. 1980, Moritz et al. 2001).

scholarly journals Lemnaceae and Orontiaceae Are Phylogenetically and Morphologically Distinct from Araceae

Plants ◽  
2021 ◽  
Vol 10 (12) ◽  
pp. 2639
Author(s):  
Nicholas P. Tippery ◽  
Donald H. Les ◽  
Klaus J. Appenroth ◽  
Kandregula Sowjanya Sree ◽  
Daniel J. Crawford ◽  
...  
Keyword(s):  
Phylogenetic Relationship ◽  
Molecular Evidence ◽  
Family Status ◽  
Close Phylogenetic Relationship ◽  
The Family ◽  
Relationship Of

Duckweeds comprise a distinctive clade of pleustophytic monocots that traditionally has been classified as the family Lemnaceae. However, molecular evidence has called into question their phylogenetic independence, with some authors asserting instead that duckweeds should be reclassified as subfamily Lemnoideae of an expanded family Araceae. Although a close phylogenetic relationship of duckweeds with traditional Araceae has been supported by multiple studies, the taxonomic disposition of duckweeds must be evaluated more critically to promote nomenclatural stability and utility. Subsuming duckweeds as a morphologically incongruent lineage of Araceae effectively eliminates the family category of Lemnaceae that has been widely used for many years. Instead, we suggest that Araceae subfamily Orontioideae should be restored to family status as Orontiaceae, which thereby would enable the recognition of three morphologically and phylogenetically distinct lineages: Araceae, Lemnaceae, and Orontiaceae.

Morphological re-description and phylogenetic relationship of five myxosporean species of the family Myxobolidae infecting Nile tilapia

2017 ◽  
Vol 124 (3) ◽  
pp. 201-214 ◽  
Author(s):  
R Abdel-Gaber ◽  
F Abdel-Ghaffar ◽  
S Maher ◽  
AM El-Mallah ◽  
S Al Quraishy ◽  
...  
Keyword(s):  
Phylogenetic Relationship ◽  
Nile Tilapia ◽  
The Family ◽  
Relationship Of ◽  
Myxosporean Species

CHROMOSOME PAIRING IN TWO INTERSPECIFIC HYBRIDS OF TRIFOLIUM

1970 ◽  
Vol 12 (4) ◽  
pp. 790-794 ◽  
Author(s):  
Chi-Chang Chen ◽  
Pryce B. Gibson
Keyword(s):  
Phylogenetic Relationship ◽  
Chromosome Pairing ◽  
Trifolium Repens ◽  
Interspecific Hybrids ◽  
Triploid Hybrid ◽  
Close Phylogenetic Relationship ◽  
Metaphase I

Both Trifolium repens (2n = 32) and T. nigrescens (2n = 16) formed bivalents during meiosis. However, their triploid hybrid showed an average of 4.27 trivalents per microsporocyte at metaphase I. The frequency of trivalents in the hybrid between T. nigrescens and autotetraploid T. occidentale (2n = 32) was 5.69. The data are interpreted to indicate: (1) a possible autotetraploid origin of T. repens; and (2) a close phylogenetic relationship among T. repens, T. nigrescens and T. occidentale.

Taxonomic status of Chinese bahaba (Bahaba taipingensis) and its phylogenetic relationship with other species in the family Sciaenidae

2012 ◽  
Vol 23 (2) ◽  
pp. 53-61 ◽  
Author(s):  
Wei He ◽  
Wei-Hua Lu ◽  
Xi-Guo Li ◽  
Ning-Ning Lu ◽  
Dong-Fang Sun ◽  
...  
Keyword(s):  
Phylogenetic Relationship ◽  
Taxonomic Status ◽  
The Family

Three new species of Sectonema Thorne, 1930 (Dorylaimida: Aporcelaimidae) from Vietnam

Nematology ◽  
2016 ◽  
Vol 18 (5) ◽  
pp. 517-536 ◽  
Author(s):  
Sergio Álvarez-Ortega ◽  
Thi Anh Duong Nguyen ◽  
Joaquín Abolafia ◽  
Thi Thanh Tam Vu ◽  
Michael Bonkowski ◽  
...  
Keyword(s):  
New Species ◽  
Phylogenetic Relationship ◽  
Ventral Side ◽  
Molecular Data ◽  
Evolutionary Tree ◽  
Neck Length ◽  
Natural Habitats ◽  
Line Drawings ◽  
Close Phylogenetic Relationship ◽  
Three New Species

Three new species of the genus Sectonema collected from natural habitats in Vietnam are studied, described and illustrated, including line drawings, LM and/or SEM pictures. Sectonema birrucephalum sp. n. is characterised by its 2.73-4.35 mm long body, lip region 18-20 μm broad and offset by deep constriction, odontostyle 10.0-11.5 μm long on its ventral side, 659-989 μm long neck, pharyngeal expansion occupying 63-68% of total neck length, uterus a simple tube, 221-277 μm long, pars refringens vaginae present, V = 54-56, tail short (31-43 μm, c = 85-111, c′ = 0.6-0.8) and rounded, spicules 72-75 μm long, and four or five irregularly spaced ventromedian supplements beyond the range of the spicules. Sectonema buccociliatum sp. n. is distinguished by its 2.00-2.46 mm long body, lip region offset by constriction, 19-20 μm broad and bearing perioral cilia-like structures, odontostyle 13-14 μm long at its ventral side, 530-625 μm long neck, pharyngeal expansion occupying 62-69% of total neck length, uterus a simple tube, 116-152 μm long, pars refringens vaginae present, V = 56-62, tail short (23-31 μm, c = 72-104, c′ = 0.6-0.8) and rounded, spicules 56-68 μm long, and 3-5 spaced and weakly developed ventromedian supplements beyond the range of the spicules. Sectonema ciliatum sp. n. is characterised by its 2.79-3.13 mm long body, lip region offset by constriction, 21-22 μm broad and bearing perioral cilia-like structures, odontostyle 14-15 μm long at its ventral side, 699-722 μm long neck, pharyngeal expansion occupying 60% of total neck length, uterus a simple tube, 201-244 μm long, pars refringens vaginae present, V = 52-53, tail short (33-35 μm, c = 82-92, c′ = 0.6-0.7) and rounded, spicules 70-72 μm long, and three or four spaced and weakly developed ventromedian supplements beyond the range of the spicules. Molecular data obtained for S. ciliatum sp. n. and the derived evolutionary tree show a close phylogenetic relationship with other species of the genus.

Statoblast morphology and systematics of the freshwater bryozoan Hyalinella orbisperma (Kellicott, 1882)

1992 ◽  
Vol 70 (8) ◽  
pp. 1536-1540 ◽  
Author(s):  
Anthony Ricciardi ◽  
Timothy S. Wood
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Phylogenetic Relationship ◽  
Georgian Bay ◽  
Close Phylogenetic Relationship ◽  
First Time ◽  
Scanning Electron

The freshwater bryozoan Hyalinella orbisperma (Ectoprocta: Phylactolaemata), previously known only from Michigan, is added to the list of Canadian fauna from a specimen collected at Georgian Bay, Ontario. Floatoblasts match the appearance of those described from Michigan. The sessoblast of this species is recorded and illustrated for the first time. The case for other species with sessoblasts in the genus Hyalinella is extremely weak. Scanning electron microscopy of the floatoblast and sessoblast reveals a raised reticulation with interstitial tubercles covering the capsule periblast, suggesting a close phylogenetic relationship with certain Plumatella species. It is proposed that H. orbisperma be reassigned to the genus Plumatella.

scholarly journals A modern scleractinian coral with a two-component calcite–aragonite skeleton

2020 ◽  
pp. 202013316
Author(s):  
Jarosław Stolarski ◽  
Ismael Coronado ◽  
Jack G. Murphy ◽  
Marcelo V. Kitahara ◽  
Katarzyna Janiszewska ◽  
...  
Keyword(s):  
Calcium Carbonate ◽  
Southern Ocean ◽  
Phylogenetic Relationship ◽  
Fossil Record ◽  
Scleractinian Coral ◽  
Scleractinian Corals ◽  
Marine Organisms ◽  
Close Phylogenetic Relationship ◽  
Two Component ◽  
Selection Of

One of the most conserved traits in the evolution of biomineralizing organisms is the taxon-specific selection of skeletal minerals. All modern scleractinian corals are thought to produce skeletons exclusively of the calcium-carbonate polymorph aragonite. Despite strong fluctuations in ocean chemistry (notably the Mg/Ca ratio), this feature is believed to be conserved throughout the coral fossil record, spanning more than 240 million years. Only one example, the Cretaceous scleractinian coral Coelosmilia (ca. 70 to 65 Ma), is thought to have produced a calcitic skeleton. Here, we report that the modern asymbiotic scleractinian coral Paraconotrochus antarcticus living in the Southern Ocean forms a two-component carbonate skeleton, with an inner structure made of high-Mg calcite and an outer structure composed of aragonite. P. antarcticus and Cretaceous Coelosmilia skeletons share a unique microstructure indicating a close phylogenetic relationship, consistent with the early divergence of P. antarcticus within the Vacatina (i.e., Robusta) clade, estimated to have occurred in the Mesozoic (ca. 116 Mya). Scleractinian corals thus join the group of marine organisms capable of forming bimineralic structures, which requires a highly controlled biomineralization mechanism; this capability dates back at least 100 My. Due to its relatively prolonged isolation, the Southern Ocean stands out as a repository for extant marine organisms with ancient traits.

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