The close phylogenetic relationship of Nitrobacter and Rhodopseudomonas palustris

1982 ◽  
Vol 131 (3) ◽  
pp. 287-290 ◽  
Author(s):  
Elke Seewaldt ◽  
Karl-Heinz Schleifer ◽  
Eberhard Bock ◽  
Erko Stackebrandt
2006 ◽  
Vol 84 (2) ◽  
pp. 243-253 ◽  
Author(s):  
Wendy A. Untereiner ◽  
Françoise A. Naveau ◽  
Jason Bachewich ◽  
Andrea Angus

During an investigation of lignicolous ascomycetes from Luxembourg, we isolated a Phialophora -like species that produced striking red colonies. To confirm the identity of this fungus as Catenulifera rhodogena , we compared it with isolates of Catenulifera rhodogena and Hyphodiscus hymeniophilus on a variety of media. Portions of the β-tubulin gene and the nuclear ribosomal DNA cistron (internal transcribed spacers (ITS) and large subunit (LSU)) were sequenced to examine the relationship of isolates of Catenulifera rhodogena and Hyphodiscus hymeniophilus from different substrates and to test the hypothesis that Cadophora and Catenulifera are congeneric. The phylogenetic position of Catenulifera within the Ascomycota was investigated based on the analysis of the small-subunit (SSU) rDNA sequences. The isolates examined were indistinguishable micromorphologically and closely related phylogenetically. Three strains of Catenulifera rhodogena from bark or wood and one strain from Piptoporus betulinus formed a strongly supported clade in analyses of β-tubulin and ITS sequences. This clade did not encompass the ex-type isolates of Cistella rubescens and Scopulariopsis rhodogena or a second isolate of Catenulifera rhodogena from Piptoporus betulinus. Analysis of partial LSU sequences confirmed the close phylogenetic relationship of Catenulifera rhodogena and Hyphodiscus hymeniophilus but provided no evidence that the isolates could be grouped by substrate or that Catenulifera is synonymous with Cadophora. The position of Catenulifera within the Helotiales was not resolved based on the comparison of LSU and SSU sequences, but the isolate for which we obtained complete SSU sequence grouped with the root endophyte Phialocephala fortinii. Comparison of ITS sequences confirmed the close phylogenetic relationship of Hyphodiscus to members of the Dermateaceae and Hyaloscyphaceae.


2019 ◽  
Author(s):  
Adriano de Bernardi Schneider ◽  
Denis Jacob Machado ◽  
Daniel Janies

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.


Zootaxa ◽  
2012 ◽  
Vol 3570 (1) ◽  
pp. 82 ◽  
Author(s):  
M. GUADALUPE DEL RÍO ◽  
ANALIA A. LANTERI

The monotypic genus Curiades Pascoe 1880 (Curculionidae: Entiminae: Naupactini) is redescribed based on the type species C. boisduvali (Boheman 1840), endemic to Río de Janeiro, Brazil. Curiades boisduvali shows a characteristic color pattern and vestiture composed of long erect setae that resembles species of Dasymutilla Ashmead 1899, a genus of Mutillidae (Hymenoptera) whose wingless females have aposematic colors and painful stings. The similarities between the wasp (model) and the weevil (mimic) suggest a case of Batesian mimicry. The morphological characters of the rostrum and antennae justify a close phylogenetic relationship of Curiades and Platyomus Sahlberg 1823, even though based on its hairy vestiture the former is superficially more similar to Trichaptus Pascoe 1880, another Brazilian naupactine mimic of mutillid wasps. The present contribution includes a redescription of Curiades and its only known species, accompanied by habitus photographs, line drawings of genitalia and other diagnostic features.


Author(s):  
Thomas Stach ◽  
Samuel Dupont ◽  
Olle Israelson ◽  
Geraldine Fauville ◽  
Hiroaki Nakano ◽  
...  

The phylogenetic position of Xenoturbella spp. has been uncertain since their discovery in 1949. It has been recently suggested that they could be related to Ambulacraria within Deuterostomia. Ambulacraria is a taxon that has been suggested to consist of Hemichordata and Echinodermata. The hypothesis that X. bocki was related to Ambulacraria as well as the hypothesis of a monophyletic Ambulacraria is primarily based on the analysis of DNA sequence data. We tested both phylogenetic hypotheses using antibodies raised against SALMFamide 1 and 2 (S1, S2), neuropeptides isolated from echinoderms, on X. bocki and the enteropneust Harrimania kupfferi. Both species showed distinct positive immunoreactivity against S1 and S2. This finding supports the Ambulacraria-hypothesis and suggests a close phylogenetic relationship of X. bocki to Ambulacraria. In particular, the presence of immunoreactivity against S2 can be interpreted as a synapomorphy of Enteropneusta, Echinodermata, and Xenoturbella spp.


Zootaxa ◽  
2017 ◽  
Vol 4254 (1) ◽  
pp. 127 ◽  
Author(s):  
HIDEO HASEGAWA ◽  
KARTIKA DEWI

Two new species of the genus Trichuris (Nematoda: Trichuridae) parasitic in the old endemic murids of Indonesia are described: T. musseri sp. nov. from Echiothrix centrosa (Murinae: Rattini) in Sulawesi and T. mallomyos sp. nov. from Mallomys rothschildi (Murinae: Hydromyini) in Papua Indonesia. Both species are characterized by having a gradually tapered and sharply pointed distal end of the spicule, being readily distinguished from most of the congeners known from murid rodents. Trichuris musseri is readily distinguished from T. mallomyos by having a much smaller body and large number of nuclei per subdivision of stichosome. The resemblance in spicule morphology between the two new species is of special interest because both hosts belong to different tribes and have different habitats and habits. It remains to be elucidated whether the resemblance is merely homoplasy or actually reflects close phylogenetic relationship of the parasites. 


Plants ◽  
2021 ◽  
Vol 10 (12) ◽  
pp. 2639
Author(s):  
Nicholas P. Tippery ◽  
Donald H. Les ◽  
Klaus J. Appenroth ◽  
Kandregula Sowjanya Sree ◽  
Daniel J. Crawford ◽  
...  

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.


2021 ◽  
Vol 7 (9) ◽  
pp. 136-143
Author(s):  
S. Rustamova ◽  
M. Ali

The review highlights animal coronaviruses, their pathogenicity, and the possible role of domestic and agricultural animals in the further spread of the COVID-19. Joint researches have been established amongst international team of scientists regarding a close phylogenetic relationship of the coronavirus SARS-CoV-2 with the coronaviruses of bats and carnivores, especially with the representatives of Felidae family (domestic cats). However, the case of Middle Eastern SARS transmitted by camels is required a special attention to biological safety measures in farms.


2017 ◽  
Vol 124 (3) ◽  
pp. 201-214 ◽  
Author(s):  
R Abdel-Gaber ◽  
F Abdel-Ghaffar ◽  
S Maher ◽  
AM El-Mallah ◽  
S Al Quraishy ◽  
...  

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