Descriptions of Roseiconus nitratireducens gen. nov. sp. nov. and Roseiconus lacunae sp. nov.

Kumar, Dhanesh; Kumar, Gaurav; Jagadeeshwari, Uppada; Shabbir, Abdul; Sasikala, Ch.; Ramana, Chintalapati Venkata

doi:10.1007/s00203-020-02078-5

Cited by 7 publications

(5 citation statements)

References 59 publications

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“…Maximum likelihood 16S rRNA gene sequence-based phylogeny was computed for the novel strains, all described planctomycetal species of the order Pirellulales [ 28 , 29 , 30 , 31 , 40 , 42 , 61 , 62 , 63 , 64 , 65 , 66 , 67 , 68 , 69 , 70 , 71 , 72 , 73 ] and an outgroup of three strains from the order Planctomycetales (acc. no.…”

Section: Methodsmentioning

confidence: 99%

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Analysis of Bacterial Communities on North Sea Macroalgae and Characterization of the Isolated Planctomycetes Adhaeretor mobilis gen. nov., sp. nov., Roseimaritima multifibrata sp. nov., Rosistilla ulvae sp. nov. and Rubripirellula lacrimiformis sp. nov.

Wiegand

Rast²,

Kallscheuer

et al. 2021

Microorganisms

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Planctomycetes are bacteria that were long thought to be unculturable, of low abundance, and therefore neglectable in the environment. This view changed in recent years, after it was shown that members of the phylum Planctomycetes can be abundant in many aquatic environments, e.g., in the epiphytic communities on macroalgae surfaces. Here, we analyzed three different macroalgae from the North Sea and show that Planctomycetes is the most abundant bacterial phylum on the alga Fucus sp., while it represents a minor fraction of the surface-associated bacterial community of Ulva sp. and Laminaria sp. Especially dominant within the phylum Planctomycetes were Blastopirellula sp., followed by Rhodopirellula sp., Rubripirellula sp., as well as other Pirellulaceae and Lacipirellulaceae, but also members of the OM190 lineage. Motivated by the observed abundance, we isolated four novel planctomycetal strains to expand the collection of species available as axenic cultures since access to different strains is a prerequisite to investigate the success of planctomycetes in marine environments. The isolated strains constitute four novel species belonging to one novel and three previously described genera in the order Pirellulales, class Planctomycetia, phylum Planctomycetes.

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Section: Methodsmentioning

confidence: 99%

“…Members of the novel genus Roseiconus [ 73 ] clustered within the earlier described genus Stieleria [ 40 , 62 ]. The results for both genera are therefore summarized under the latter term for all analyses.…”

Section: Methodsmentioning

confidence: 99%

Analysis of Bacterial Communities on North Sea Macroalgae and Characterization of the Isolated Planctomycetes Adhaeretor mobilis gen. nov., sp. nov., Roseimaritima multifibrata sp. nov., Rosistilla ulvae sp. nov. and Rubripirellula lacrimiformis sp. nov.

Wiegand

Rast²,

Kallscheuer

et al. 2021

Microorganisms

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“… *Data from (Surup et al 2020 ) a Data from (Oberbeckmann et al 2017 ) b Data from (Sandargo et al 2020 ) c Data from (Kallscheuer et al 2020a ) d Data from (Vitorino et al 2022 ) e Data from (Kumar et al 2021 ) …”

Section: Resultsmentioning

confidence: 99%

“…More recently, Stieleria sedimenti ICT_E10.1 T was isolated from sediments retrieved from the Tagus river estuary in Portugal (Vitorino et al 2022 ). A taxonomic conflict has been previously detected between the genus Stieleria and the genus “Roseiconus”, which has two described species “Roseiconus lacunae” and “Roseiconus nitratireducens” (Kumar et al 2021 ; Vitorino and Lage 2022 ). Although these two species do not have validly published names, their descriptions have been published and as such are included in this analysis.…”

Section: Introductionmentioning

confidence: 99%

Stieleria tagensis sp. nov., a novel member of the phylum Planctomycetota isolated from Tagus River in Portugal

Godinho,

Klimek,

Jackiewicz

et al. 2023

Antonie van Leeuwenhoek

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A bacterial strain was isolated from a brackish water sample of Tagus river, Alcochete, Portugal and was designated TO1_6T. It forms light pink colonies on M13 medium supplemented with N-acetylglucosamine. Cells are pear-shaped to spherical, form rosettes and divide by budding. Strain TO1_6T presents a mesophilic and neutrophilic profile, with optimum growth at 20 to 25 °C and pH 7.0 to 7.5, and vitamin supplementation is not required to promote its growth. The genome of the novel isolate is 7.77 Mbp in size and has a DNA G + C content of 56.3%. Based on its 16S rRNA gene sequence, this strain is affiliated with the phylum Planctomycetota. Further taxonomic characterization using additional phylogenetic markers, namely rpoB gene sequence (encoding the β-subunit of the DNA-dependent RNA polymerase), as well as Percentage of conserved proteins, average nucleotide identity and average amino acid identity, suggest the affiliation of strain TO1_6T to the genus Stieleria, a recently described taxon in the family Pirellulaceae, order Pirellulales and class Planctomycetia. Based on the genotypic, phylogenetic and physiological characterization, we here describe a new species represented by the type strain TO1_6T (= CECT 30432T, = LMG 32465T), for which the name Stieleria tagensis sp. nov. is proposed.

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“…Other described genera in the family Pirellulaceae with validly published names are Aureliella (Rast et al 2020), Blastopirellula (Schlesner et al 2004;Kallscheuer et al 2020b), Bremerella (Rensink et al 2020), Lignipirellula (Peeters et al 2020a), Crateriforma (Peeters et al 2020b), Mariniblastus (Lage et al 2017), Novipirellula (Kallscheuer et al 2020c), Rhodopirellula (Schlesner et al 2004;Kallscheuer et al 2020d), Roseimaritima (Bondoso et al 2015), Rosistilla (Waqqas et al 2020), Rubripirellula (Bondoso et al 2015) and Stieleria (Kallscheuer et al 2020a). Two additional described genera in this family with pending validation status are 'Anatilimnocola' (Kallscheuer et al 2021) and 'Roseiconus' (Kumar et al 2021). The isolates representing most of the above listed genera have been obtained from marine and brackish habitats such as natural or artificial marine surfaces, macroalgae, shallow-sea hydrothermal vents and others.…”

Section: Introductionmentioning

confidence: 99%

Anatilimnocola floriformis sp. nov., a novel member of the family Pirellulaceae from a boreal lake, and emended description of the genus Anatilimnocola

Kulichevskaya

Ivanova

Сузина

et al. 2022

Antonie van Leeuwenhoek

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we characterized a novel freshwater planctomycete of the genus 'Anatilimnocola', strain PX40 T , which was isolated from a boreal eutrophic lake. Strain PX40 T was represented by budding, unpigmented, ellipsoidal to pear-shaped cells, which often occurred in characteristic flower-like rosettes. Cells were covered by bundles of fimbriae; crateriform-like structures were localized on a reproductive cell pole only. These planctomycetes were obligately aerobic, heterotrophic bacteria that utilized various sugars and some polysaccharides, and were highly sensitive to NaCl. Growth occurred in the pH range 5.0-7.5 (with an optimum at pH 6.5-7.0), and at temperatures between 15 and 30 °C (with an optimum at 22-25 °C). The major fatty acids of strain PX40 T were C18:1ω9c, C16:0, and 16:1ω7c; cells also contained a wide variety of hydroxy-and dihydroxy-fatty acids and a C31:9 alkene. The major intact polar lipids were diacylglyceryl-(N,N,N)-trimethylhomoserines. The 16S rRNA gene sequence of strain PX40 T displayed 96.6% similarity to that of 'Anatilimnocola aggregata' ETA_A8 T . The genome of strain PX40 T was 8.93 Mb in size and contained one copy of rRNA operon, 76 tRNA genes and 7092 potential proteincoding genes. The DNA G+C content was 57.8%. The ANI value between strain PX40 T and 'Anatilimnocola aggregata' ETA_A8 T was 78.3%, suggesting that these planctomycetes represent distinct species. We, therefore, propose a novel species of the genus 'Anatilimnocola', 'A. floriformis' sp. nov., with strain

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Descriptions of Roseiconus nitratireducens gen. nov. sp. nov. and Roseiconus lacunae sp. nov.

Cited by 7 publications

References 59 publications

Analysis of Bacterial Communities on North Sea Macroalgae and Characterization of the Isolated Planctomycetes Adhaeretor mobilis gen. nov., sp. nov., Roseimaritima multifibrata sp. nov., Rosistilla ulvae sp. nov. and Rubripirellula lacrimiformis sp. nov.

Analysis of Bacterial Communities on North Sea Macroalgae and Characterization of the Isolated Planctomycetes Adhaeretor mobilis gen. nov., sp. nov., Roseimaritima multifibrata sp. nov., Rosistilla ulvae sp. nov. and Rubripirellula lacrimiformis sp. nov.

Stieleria tagensis sp. nov., a novel member of the phylum Planctomycetota isolated from Tagus River in Portugal

Anatilimnocola floriformis sp. nov., a novel member of the family Pirellulaceae from a boreal lake, and emended description of the genus Anatilimnocola

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