Amazonocrinis nigriterrae gen. nov., sp. nov., Atlanticothrix silvestris gen. nov., sp. nov. and Dendronalium phyllosphericum gen. nov., sp. nov., nostocacean cyanobacteria from Brazilian environments

2021 ◽  
Vol 71 (5) ◽  
Author(s):  
Danillo Oliveira Alvarenga ◽  
Ana Paula Dini Andreote ◽  
Luis Henrique Zanini Branco ◽  
Endrews Delbaje ◽  
Renata Beatriz Cruz ◽  
...  
Keyword(s):  
Terrestrial Ecosystems ◽  
South American ◽  
Content Type ◽  
Carbon And Nitrogen ◽  
Symbiotic Relationships ◽  
Link Type ◽  
Code Of Nomenclature ◽  
The Face ◽  
Anthropogenic Threats ◽  
Cyanobacterial Genus

The cyanobacterial genus Nostoc is an important contributor to carbon and nitrogen bioavailability in terrestrial ecosystems and a frequent partner in symbiotic relationships with non-diazotrophic organisms. However, since this currently is a polyphyletic genus, the diversity of Nostoc -like cyanobacteria is considerably underestimated at this moment. While reviewing the phylogenetic placement of previously isolated Nostoc -like cyanobacteria originating from Brazilian Amazon, Caatinga and Atlantic forest samples, we detected 17 strains isolated from soil, freshwater, rock and tree surfaces presenting patterns that diverged significantly from related strains when ecological, morphological, molecular and genomic traits were also considered. These observations led to the identification of the evaluated strains as representative of three novel nostocacean genera and species: Amazonocrinis nigriterrae gen. nov., sp. nov.; Atlanticothrix silvestris gen. nov., sp. nov.; and Dendronalium phyllosphericum gen. nov., sp. nov., which are herein described according to the rules of the International Code of Nomenclature for algae, fungi and plants. This finding highlights the great importance of tropical and equatorial South American ecosystems for harbouring an unknown microbial diversity in the face of the anthropogenic threats with which they increasingly struggle.

scholarly journals Proposal to change the name Rhodoligotrophos Fukuda et al. 2012, 1947 to Rhodoligotrophus. Request for an Opinion

2013 ◽  
Vol 63 (Pt_9) ◽  
pp. 3545-3545 ◽  
Author(s):  
Aharon Oren ◽  
George M. Garrity ◽  
Bernhard Schink
Keyword(s):  
International Committee ◽  
International Code ◽  
Content Type ◽  
Name Change ◽  
Link Type ◽  
Code Of Nomenclature ◽  
International Code Of Nomenclature

In the opinion of the authors, the genus name Rhodoligotrophos was formed in violation of Principle 3 and Rule 10a of the International Code of Nomenclature of Prokaryotes which requires that genus names are to be treated as Latin substantives. We therefore propose renaming the genus Rhodoligotrophos as Rhodoligotrophus. A Request for an Opinion is submitted to the Judicial Commission of the International Committee on Systematics of Prokaryotes regarding this proposed name change.

scholarly journals Halotia gen. nov., a phylogenetically and physiologically coherent cyanobacterial genus isolated from marine coastal environments

2015 ◽  
Vol 65 (Pt_2) ◽  
pp. 663-675 ◽  
Author(s):  
Diego Bonaldo Genuário ◽  
Marcelo Gomes Marçal Vieira Vaz ◽  
Guilherme Scotta Hentschke ◽  
Célia Leite Sant’Anna ◽  
Marli Fátima Fiore
Keyword(s):  
16S Rrna ◽  
16S Rrna Gene ◽  
New Genus ◽  
Salinity Range ◽  
Rrna Gene ◽  
Content Type ◽  
Link Type ◽  
Code Of Nomenclature ◽  
The Antarctic ◽  
The 16S Rrna Gene

Nostoc is a common and well-studied genus of cyanobacteria and, according to molecular phylogeny, is a polyphyletic group. Therefore, revisions of this genus are urged in an attempt to clarify its taxonomy. Novel strains isolated from underexplored environments and assigned morphologically to the genus Nostoc are not genetically related to the ‘true Nostoc’ group. In this study, four strains isolated from biofilms collected in Antarctica and five strains originated from Brazilian mangroves were evaluated. Despite their morphological similarities to other morphotypes of Nostoc , these nine strains differed from other morphotypes in ecological, physiological and genetic aspects. Based on the phylogeny of the 16S rRNA gene, the Antarctic sequences were grouped together with the sequences of the Brazilian mangrove isolates and Nostoc sp. Mollenhauer 1 : 1-067 in a well-supported cluster (74 % bootstrap value, maximum-likelihood). This novel cluster was separated phylogenetically from the ‘true Nostoc’ clade and from the clades of the morphologically similar genera Mojavia and Desmonostoc. The 16S rRNA gene sequences generated in this study exhibited 96 % similarity to sequences from the nostocacean genera mentioned above. Physiologically, these nine strains showed the capacity to grow in a salinity range of 1–10 % NaCl, indicating their tolerance of saline conditions. These results provide support for the description of a new genus, named Halotia gen. nov., which is related morphologically to the genera Nostoc , Mojavia and Desmonostoc. Within this new genus, three novel species were recognized and described based on morphology and internal transcribed spacer secondary structures: Halotia branconii sp. nov., Halotia longispora sp. nov. and Halotia wernerae sp. nov., under the provisions of the International Code of Nomenclature for Algae, Fungi and Plants.

scholarly journals Building a Better Test for Piperacillin-Tazobactam Susceptibility Testing: Would that It Were So Simple (It's Complicated)

2019 ◽  
Vol 58 (2) ◽  
Author(s):  
Andrew Henderson ◽  
Romney Humphries
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Clinical Microbiology ◽  
Susceptibility Testing ◽  
Resistance Mechanisms ◽  
Performance Data ◽  
Analytical Performance ◽  
Content Type ◽  
Link Type ◽  
The Face

ABSTRACT In this issue of the Journal of Clinical Microbiology, S. García-Fernandez, Y. Bala, T. Armstrong, M. Garcia-Castillo, et al. (J Clin Microbiol 58:e01042-19, 2020, https://doi.org/10.1128/JCM.01042-19) describe the performance of a reformulated Etest for piperacillin-tazobactam. The analytical performance data are excellent, but in the face of recent emerging data on the inefficacy of piperacillin-tazobactam for certain organisms that test susceptible, the value of piperacillin-tazobactam MICs is controversial. Evaluation of MICs in the context of the modal MIC for Enterobacterales and Pseudomonas aeruginosa, the variability of MIC tests, and, possibly, resistance mechanisms is important to the optimum use of this antimicrobial.

Conservation of Rhodococcus equi (Magnusson 1923) Goodfellow and Alderson 1977 and rejection of Corynebacterium hoagii (Morse 1912) Eberson 1918

2014 ◽  
Vol 64 (Pt_1) ◽  
pp. 311-312 ◽  
Author(s):  
George M. Garrity
Keyword(s):  
Type Species ◽  
Rhodococcus Equi ◽  
International Code ◽  
Content Type ◽  
Zoonotic Pathogen ◽  
Link Type ◽  
Code Of Nomenclature ◽  
History Of ◽  
International Code Of Nomenclature

A recent review of the nomenclatural history of Rhodococcus equi and its heterotypic synonyms reveals a situation in which the strict application of the Rules of the International Code of Nomenclature of Prokaryotes have resulted in the renaming of this known zoonotic pathogen, which may be reasonably viewed as a perilous name. This situation can be remedied only by the Judicial Commission rendering an opinion to conserve the name Rhodococcus equi and to reject its earlier heterotypic synonym, Corynebacterium hoagii .

scholarly journals Bradyrhizobium ottawaense sp. nov., a symbiotic nitrogen fixing bacterium from root nodules of soybeans in Canada

2014 ◽  
Vol 64 (Pt_9) ◽  
pp. 3202-3207 ◽  
Author(s):  
Xiumei Yu ◽  
Sylvie Cloutier ◽  
James T. Tambong ◽  
Eden S. P. Bromfield
Keyword(s):  
Glycine Max ◽  
Glycine Soja ◽  
Root Nodules ◽  
Taxonomic Status ◽  
Rrna Gene ◽  
Gene Sequences ◽  
Content Type ◽  
Carbon And Nitrogen ◽  
Link Type ◽  
Macroptilium Atropurpureum

Sixteen strains of symbiotic bacteria from root nodules of Glycine max grown in Ottawa, Canada, were previously characterized and placed in a novel group within the genus Bradyrhizobium . To verify their taxonomic status, these strains were further characterized using a polyphasic approach. All strains possessed identical 16S rRNA gene sequences that were 99.79 % similar to the closest relative, Bradyrhizobium liaoningense LMG 18230T. Phylogenetic analysis of concatenated atpD, glnII, recA, gyrB, rpoB and dnaK genes divided the 16 strains into three multilocus sequence types that were placed in a highly supported lineage distinct from named species of the genus Bradyrhizobium consistent with results of DNA–DNA hybridization. Based on analysis of symbiosis gene sequences (nodC and nifH), all novel strains were placed in a phylogenetic group with five species of the genus Bradyrhizobium that nodulate soybeans. The combination of phenotypic characteristics from several tests including carbon and nitrogen source utilization and antibiotic resistance could be used to differentiate representative strains from recognized species of the genus Bradyrhizobium . Novel strain OO99T elicits effective nodules on Glycine max, Glycine soja and Macroptilium atropurpureum, partially effective nodules on Desmodium canadense and Vigna unguiculata, and ineffective nodules on Amphicarpaea bracteata and Phaseolus vulgaris. Based on the data presented, we conclude that our strains represent a novel species for which the name Bradyrhizobium ottawaense sp. nov. is proposed, with OO99T ( = LMG 26739T = HAMBI 3284T) as the type strain. The DNA G+C content is 62.6 mol%.

scholarly journals Designation of type strains for seven species of the order Myxococcales and proposal for neotype strains of Cystobacter ferrugineus, Cystobacter minus and Polyangium fumosum

2013 ◽  
Vol 63 (Pt_11) ◽  
pp. 4354-4360 ◽  
Author(s):  
Elke Lang ◽  
Hans Reichenbach
Keyword(s):  
Type Strain ◽  
Type Species ◽  
Type Material ◽  
Content Type ◽  
Systematic Bacteriology ◽  
Link Type ◽  
Code Of Nomenclature ◽  
Type Strains ◽  
Physical Type ◽  
International Code Of Nomenclature

Ten species of the order Myxococcales with validly published names are devoid of living type strains. Four species of the genus Chondromyces are represented by dead herbarium samples as the type material. For a species of the genus Melittangium and two species of the genus Polyangium , no physical type material was assigned at the time of validation of the names or later on. In accordance with rule 18f of the International Code of Nomenclature of Bacteria the following type strains are designated for these species: strain Cm a14T ( = DSM 14605T = JCM 12615T) as the type strain of Chondromyces apiculatus , strain Cm c5T ( = DSM 14714T = JCM 12616T) as the type strain of Chondromyces crocatus , strain Sy t2T ( = DSM 14631T = JCM 12617T) as the type strain of Chondromyces lanuginosus , strain Cm p51T ( = DSM 14607T = JCM 12618T) as the type strain of Chondromyces pediculatus , strain Me b8T ( = DSM 14713T = JCM 12633T) as the type strain of Melittangium boletus , strain Pl s12T ( = DSM 14670T = JCM 12637T) as the type strain of Polyangium sorediatum and strain Pl sm5T ( = DSM 14734T = JCM 12638T) as the type strain of Polyangium spumosum . Furthermore, the type strains given for three species of the genera Cystobacter and Polyangium had been kept at one university institute and have been lost according to our investigations. In accordance with Rule 18c of the Bacteriological Code, we propose the following neotype strains: strain Cb fe18 ( = DSM 14716  = JCM 12624) as the neotype strain of Cystobacter ferrugineus , strain Cb m2 ( = DSM 14751 = JCM 12627) as the neotype strain of Cystobacter minus and strain Pl fu5 ( = DSM 14668 = JCM 12636) as the neotype strain of Polyangium fumosum . The proposals of the strains are based on the descriptions and strain proposals given in the respective chapters of Bergey’s Manual of Systematic Bacteriology (2005).

scholarly journals Reclassification of Friedmanniella endophytica, Lysinimicrobium sediminis and Lechevalieria rhizosphaerae as Microlunatus kandeliicorticis nom. nov., Demequina sediminis comb. nov. and Lentzea rhizosphaerae comb. nov., respectively

2020 ◽  
Vol 70 (6) ◽  
pp. 3930-3931 ◽  
Author(s):  
Ling-Ling Yang ◽  
Xiao-Yang Zhi
Keyword(s):  
Type Species ◽  
International Code ◽  
Content Type ◽  
Nomenclatural Type ◽  
Link Type ◽  
Code Of Nomenclature ◽  
International Code Of Nomenclature

According to Rule 37a of the International Code of Nomenclature of Prokaryotes, the name of a taxon must be changed if the nomenclatural type of the taxon is excluded. Recently, in a transfer of actinobacterial species, three species – Friedmanniella endophytica Tuo et al. 2016, Lysinimicrobium sediminis Hamada et al. 2017 and Lechevalieria rhizosphaerae Zhao et al. 2017 – were not transferred with their type species. Therefore, to resolve these nomenclatural issues, Microlunatus kandeliicorticis nom. nov., Demequina sediminis comb. nov. and Lentzea rhizosphaerae comb. nov. are proposed, respectively.

scholarly journals The subgenus names Moraxella and Branhamella (in the genus Moraxella) are not in accordance with the International Code of Nomenclature of Bacteria and are therefore not validly published: Supplementary information to Opinion 83. Judicial Commission of the International Committee on Systematics of Prokaryotes

2014 ◽  
Vol 64 (Pt_10) ◽  
pp. 3595-3596 ◽  
Author(s):  
B. J. Tindall
Keyword(s):  
International Committee ◽  
Supplementary Information ◽  
International Code ◽  
Content Type ◽  
Link Type ◽  
Code Of Nomenclature ◽  
International Code Of Nomenclature

The publication of Opinion 83, which dealt with the valid publication of the subgenus names Moraxella and Branhamella (in the genus Moraxella ), has highlighted a problem relating to the absence of descriptions associated with these names at the time they were effectively published. This calls into question whether the ruling outlined in Opinion 83, that these names should have qualified for inclusion on the Approved Lists of Bacterial Names, and their inclusion on Validation List 15 are not in accordance with Rule 27 of the International Code of Nomenclature of Bacteria governing the valid publication of a name. The subgenus names Moraxella and Branhamella (in the genus Moraxella ) are not to be considered to be included on the Approved Lists of Bacterial Names, nor are they to be considered to be validly published by inclusion on Validation List 15.

scholarly journals Pantanalinema gen. nov. and Alkalinema gen. nov.: novel pseudanabaenacean genera (Cyanobacteria) isolated from saline–alkaline lakes

2015 ◽  
Vol 65 (Pt_1) ◽  
pp. 298-308 ◽  
Author(s):  
Marcelo Gomes Marçal Vieira Vaz ◽  
Diego Bonaldo Genuário ◽  
Ana Paula Dini Andreote ◽  
Camila Francieli Silva Malone ◽  
Célia Leite Sant’Anna ◽  
...  
Keyword(s):  
Type Species ◽  
Phylogenetic Reconstruction ◽  
Intergenic Spacer ◽  
Gliding Motility ◽  
23S Rrna ◽  
Rrna Gene ◽  
Content Type ◽  
Link Type ◽  
Code Of Nomenclature ◽  
Group B

The genus Leptolyngbya Anagnostidis & Komárek (1988) was described from a set of strains identified as ‘LPP-group B’. The morphology within this group is not particularly informative and underestimates the group’s genetic diversity. In the present study, two new pseudanabaenacean genera related to Leptolyngbya morphotypes, Pantanalinema gen. nov. and Alkalinema gen. nov., are described under the provisions of the International Code of Nomenclature for Algae, Fungi and Plants, based on a polyphasic approach. Pantanalinema gen. nov. (type species Pantanalinema rosaneae sp. nov.) has sheaths and trichomes with slight gliding motility, which distinguish this genus from Alkalinema gen. nov. (type species Alkalinema pantanalense sp. nov.), which possesses trichomes arranged in an ornate (interwoven) pattern. 16S rRNA gene sequences of strains of Pantanalinema and Alkalinema exhibited low identity to each other (≤91.6 %) and to other sequences from known pseudanabaenacean genera (≤94.3 and 93.7 %, respectively). In a phylogenetic reconstruction, six sequences from strains of Pantanalinema and four from strains of Alkalinema formed two separate and robust clades (99 % bootstrap value), with the genera Oculatella and Phormidesmis, respectively, as the closest related groups. 16S–23S rRNA intergenic spacer sequences and secondary structures of strains of Pantanalinema and Alkalinema did not correspond to any previous descriptions. The strains of Pantanalinema and Alkalinema were able to survive and produce biomass at a range of pH (pH 4–11) and were also able to alter the culture medium to pH values ranging from pH 8.4 to 9.9. These data indicate that cyanobacterial communities in underexplored environments, such as the Pantanal wetlands, are promising sources of novel taxa.

scholarly journals Description of novel species of Aliinostoc, Desikacharya and Desmonostoc using a polyphasic approach

2020 ◽  
Vol 70 (5) ◽  
pp. 3413-3426 ◽  
Author(s):  
Sara Kabirnataj ◽  
Ghorban A. Nematzadeh ◽  
Ahmad F. Talebi ◽  
Aniket Saraf ◽  
Archana Suradkar ◽  
...  
Keyword(s):  
Novel Species ◽  
Polyphasic Approach ◽  
Rrna Gene ◽  
International Code ◽  
Mazandaran Province ◽  
Content Type ◽  
Link Type ◽  
Secondary Structure Analysis ◽  
Code Of Nomenclature ◽  
International Code Of Nomenclature

Five cyanobacterial strains with Nostoc -like morphology from different localities of the Mazandaran province of Iran were characterized using a polyphasic approach. Three strains clustered within the Aliinostoc clade whereas one each of the remaining two strains clustered within the genera Desmonostoc and Desikacharya . The phylogenetic positioning of all the strains by the bayesian inference, neighbour joining and maximum parsimony methods inferred using 16S rRNA gene indicated them to represent novel species of the genera Aliinostoc , Desmonostoc and Desikacharya . The 16S–23S ITS secondary structure analysis revealed that all five strains under study represented novel species unknown to science. In accordance with the International Code of Nomenclature for algae, fungi and plants we describe three novel species of the genus Aliinostoc and one species each of the genera Desmonostoc and Desikacharya .

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