578 research outputs found
Gonaxiidae Maggioni 2021, fam. nov.
No full textFamily Gonaxiidae Maggioni, fam. nov. <p> <b>Diagnosis.</b> Hydroids forming upright colonies of macroscopic size built up along a fascicled, simple or branched main stem. Cladia biseriate, alternating along the stem and, when present, its branches forming either simple-pinnate or multi-pinnate, planar colonies with straight stems, or pinnate cladia-bearing branches spirally arranged along a strongly geniculate stem. Division into internodes often indistinct in both stems and cladia; usually a hydrotheca per equivalent of cladial internode; on stems, two successive cladia separated by three consecutive hydrothecae, of which the proximal most is axillar; cladia borne on short stem apophyses. Hydrothecae flask-shaped to tubular, immersed for a varied degree into their corresponding internodes, free part variably projecting out- to upward, aperture distal, transverse, margin provided with three rounded cusps (two latero-adaxial, one abaxial) separated by shallow embayments, operculum composed of three triangular flaps. Gonothecae arising from the component tubes of the stems, either club-shaped and fully free above their origin, or long, tubular, partly adnate to the stem proximally and diverging distally, in all cases provided apically with a rounded, transverse aperture, broader in females than in males.</p>Published as part of <i>Galea, Horia R. & Maggioni, Davide, 2021, An integrative study of some species of Gonaxia Vervoort, 1993 from off New Caledonia, with the establishment of Gonaxiidae as a new family of thecate hydroids (Cnidaria: Hydrozoa), pp. 401-429 in Zootaxa 5004 (3)</i> on page 404, DOI: 10.11646/zootaxa.5004.3.1, <a href="http://zenodo.org/record/5120645">http://zenodo.org/record/5120645</a>
5.8S Rev FAM and 5S Rev HEX primers optimization.
No full textA Evaluation of two 5.8S Rev FAM primer quantities, 1 pmol and 10 pmol, using 0.06, 0.125, 0.25, 0.5 and 1 μg of RNA from U2OS cells. The plot reports 5.8S short peak area and R2 values were obtained by linear regression. B and C Optimization of 5S Rev HEX primer using 1, 2, 5 and 7 pmol of primer in a reaction with 10 pmol of 5.8S Rev FAM primer and 0.125 μg of total RNA from U2OS cells. The introduction of the second primer did not affect the detection of 5.8S rRNA.</p
Archives affabulatoires, engagisme queer et ZOM-FAM de Kama La Mackerel
No full textL’auteure avance que le recueil de poésie ZOM-FAM, de Kama La Mackerel, constitue une archive affabulatoire de l’engagisme queer (queer indenture). Elle situe d’abord son recueil dans le contexte des histoires d’esclavage et d’engagisme de l’île Maurice, pour observer ensuite la façon dont ZOM-FAM offre une optique queer par des approches décoloniales au langage, ainsi qu’une esthétique qui éclaire de nouvelles généalogies d’engagisme queer et de genre décolonial.The author proposes that Kama La Mackerel’s ZOM-FAM is a fabulatory archive for queer indenture. She contextualizes this book of poems within Mauritius and the island’s histories of enslavement and indenture and observe how ZOM-FAM offers a queers lens through decolonial approaches to language alongside an aesthetic that illuminates new genealogies in queer indenture and decolonial gender.La autora afirma que la colección de poesía ZOM-FAM, de Kama La Mackerel, constituye un archivo ficticio de engagisme queer (queer indenture). En primer lugar, sitúa su colección en el contexto de los relatos de esclavitud y de engagisme de la Isla Mauricio, luego observa cómo ZOM-FAM ofrece una perspectiva queer a través de enfoques decoloniales del lenguaje, así como una estética que alumbra nuevas genealogías de engagisme queer y de género decolonial
Magnetospirillum sulfuroxidans sp. nov., capable of sulfur-dependent lithoautotrophy and a taxonomic reevaluation of the order Rhodospirillales
No full textA spiral-shaped, highly motile bacterium was isolated from freshwater sulfidic sediment. Strain J10 T is a facultative autotroph utilizing sulfide, thiosulfate, and sulfur as the electron donors in microoxic conditions. Despite high 16S rRNA gene sequence sequence identity to Magnetospirillum gryphiswaldense MSR-1 T (99.6 %), digital DNA-DNA hybridisation homology and average nucleotide identity between the two strains was of the different species level (25 % and 83 %, respectively). Strain J10 T is not magnetotactic. The DNA G + C content of strain J10 T is 61.9 %. The predominant phospholipid ester-linked fatty acids are C18:1ω7, C16:1ω7, and C16:0. Strain J10 T (=DSM 23205 T = VKM B-3486 T) is the first strain of the genus Magnetospirillum showing lithoautotrophic growth and is proposed here as a novel species, Magnetospirillum sulfuroxidans sp. nov. In addition, we propose to establish a framework for distinguishing genera and families within the order Rhodospirillales based on phylogenomic analysis using the threshold values for average amino acid identity at ̴ 72 % for genera and ̴ 60 % for families. According to this, we propose to divide the existing genus Magnetospirillum into three genera: Magnetospirillum, Paramagnetospirillum, and Phaeospirillum, constituting a separate family Magnetospirillaceae fam. nov. in the order Rhodospirillales. Furthermore, phylogenomic data suggest that this order should accomodate six more new family level groups including Magnetospiraceae fam. nov., Magnetovibrionaceae fam. nov., Dongiaceae fam. nov., Niveispirillaceae fam. nov., Fodinicurvataceae fam. nov., and Oceanibaculaceae fam. nov. Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.BT/Environmental Biotechnolog
Dethiobacteraceae fam. nov.
No full textDe.thi’o.bac.ter.a.ce.a.e. N.L. masc. n. Dethiobacter, the type genus of the family; L. fem. pl. n. suff. -aceae, ending to denote a family; N.L. fem. pl. n. Dethiobacteraceae, the family of the genus Dethiobacter. The family Dethiobacteraceae includes obligately anaerobic, moderately salt-tolerant, and obligately alkaliphilic bacteria able to grow chemolithoautotrophically by elemental sulfur disproportionation and fixingCO2 by the Wood–Ljungdahl pathway. The two strains currently known in pure culture are both isolated from saline soda lakes. H2 can serve as an additionalelectron donor for sulfur and thiosulfate reduction. The family consists of a single genus Dethiobacter with the type species Dethiobacter alkaliphilus. DNA G +C content (%): 48.3–48.5 (genomes of two isolates). Type genus: Dethiobacter Sorokin et al. 2008, VL123.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work publicBT/Environmental Biotechnolog
Phylogenetic study of the Nemaliales (Rhodophyta) based on large-subunit ribosomal DNA sequences supports segregation of the Scinaiaceae fam. nov. and resurrection of Dichotomaria Lamarck
No full textGene sequence data have been newly obtained for 18 species in 13 genera of the order Nemaliales (Rhodophyta), allowing for the first time a relatively comprehensive molecular phylogenetic appraisal of the order. The phylogenetic trees generated from these data support the recognition of three families: (i) the Liagoraceae as presently constituted; (ii) a reduced Galaxauraceae includingActinotrichia,Galaxaura (sensu lato), andTricleocarpa; and (iii) a new family, Scinaiaceae, segregated from the Galaxauraceae and including the generaScinaia,Gloiophloea,Nothogenia, and probablyWhidbeyella. The four genera of the Scinaiaceae differ from the newly circumscribed Galaxauraceae in being uncalcified, and having heteromorphic life histories in which the tetrasporophyte is much reduced and filamentous or crustose. This type of life history is found in onlyTricleocarpaof the Galaxauraceae. The results also showGalaxaurato be para/polyphyletic ifActinotrichiaandTricleocarpaare recognized. To remedy this, theGalaxaura marginataspecies complex,Galaxaura diesingiana, andGalaxaura obtusataare removed from the genus and placed in the resurrectedDichotomariaLamarck.Galaxaura marginata, presently thought to be wide-ranging and morphologically variable, is shown to comprise several species. As a consequence,Galaxaura teneraKjellman andBrachycladia australisSonder are removed from the synonymy ofG. marginataand restored as independent species inDichotomariafor South African and Australian isolates, respectively. The Liagoraceae is shown to encompass genera previously placed in the segregate families Nemaliaceae and Dermonemataceae, and the value of the reproductive characters used to define those taxa is discussed. [ABSTRACT FROM AUTHOR]Peer reviewedfinal article publishedDichotomariaScinaiaceae fam. novphylogenyNemalialesLiagoraceaeGalaxaura marginataGalaxauracea
Self-organizing multisensor systems for odour classification: internal categorization, adaptation and drift rejection
No full textSulfurivermis fontis gen. nov., sp nov., a sulfur-oxidizing autotroph, and proposal of Thioprofundaceae fam. nov
No full textA novel Gram-stain-negative, chemolithoautotrophic sulfur oxidizer, strain JG42(T), was isolated from a hot spring microbial mat. As an electron donor for autotrophic growth, strain JG42(T) utilized sulfide, thiosulfate, tetrathionate and elemental sulfur. Cells of strain JG42(T) were oxidase-positive and catalase-negative. The G+C content of the genomic DNA was 65 mol%. The predominant cellular fatty acid was C-16:0. Phylogenetic analysis of the 16S rRNA gene indicated that strain JG42(T) belonged to the order Chromatiales, but sequence similarities to the known species were less than 94 %. On the basis of its properties, strain JG42(T) (= DSM 104776(T) = NBRC 112696(T)) is proposed as the type strain of a novel species of a new genus, Sulfurivermis fontis gen. nov., sp. nov., which belongs to the family Thioalkalispiraceae. A new family, Thioprofundaceae fam. nov., is also proposed to accommodate the genus Thioprofundum, transferred from the family Thioalkalispiraceae
Sensor array figures of merit: definitions and properties
No full textThis paper gives a design approach for sensor arrays which are dedicated to measure complex environments. A set of figures of merits, namely, sensitivity and resolution, is introduced and an example of application of a design procedure is discussed
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