Jannaschia marina sp. nov., isolated from the gut of a gastropod, Onchidium reevesii

2021 ◽  
Author(s):  
Si Chen ◽  
Mengyuan He ◽  
Qiliang Lai ◽  
Ying Xu ◽  
Chenjing Shang
Keyword(s):  
Type Species ◽  
Sequence Similarity ◽  
Amino Acid Identity ◽  
Rrna Gene ◽  
Chromosomal Dna ◽  
Phenotypic Data ◽  
Unidentified Phospholipid ◽  
Respiratory Quinone ◽  
Content Type ◽  
Link Type

A taxonomic study was carried out on strain SHC163T, which was isolated from the gut of Onchidium reevesii. The bacterium was Gram-stain-negative, oxidase-positive, catalase-negative and rod-shaped. Growth was observed at salinities of 0–4.0 % NaCl and at temperatures of 15–35 °C. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain SHC163T belonged to the genus Jannaschia , with the highest sequence similarity to Jannaschia seosinensis CL-SP26T (97.9%), followed by Jannaschia faecimaris DSM 100420T (97.8 %), Jannaschia rubra CECT 5088T (97.5%) and eight species of the genus Jannaschia (94.7−97.1 %). The average amino acid identity, average nucleotide identity and the digital DNA–DNA hybridization estimate values between strain SHC163T and the type strains of the genus Jannaschia were 64.33−79.78 %, 71.0−78.4 % and 19.2−21.0%, respectively. The principal fatty acids (>5 %) were summed feature 8 (C18 : 1  ω7c/C18 : 1  ω6c, 56.5 %), C18 : 1  ω7c 11-methyl (23.1 %), C18 : 0 (8.7 %). The G+C content of the chromosomal DNA was 67.8 mol%. The respiratory quinone was determined to be Q-10 (100 %). The polar lipids were phosphatidylcholine, phosphatidylethanolamine, phosphatidylglycerol, an unidentified phospholipid, an unidentified aminolipid and aminophospholipid. The combined genotypic and phenotypic data show that strain SHC163T represents a novel species within the genus Jannaschia , for which the name Jannaschia marina sp. nov. is proposed, with the type strain SHC163T (=MCCC 1K04032T=KCTC 72524T).

Pseudooceanicola endophyticus sp. nov., a novel endophytic bacterium isolated from bark Aegiceras corniculatum

2021 ◽  
Vol 71 (10) ◽  
Author(s):  
Zhou-Qing Zheng ◽  
Ming-Sheng Chen ◽  
Xiao-Rui Yan ◽  
Li Tuo
Keyword(s):  
Type Species ◽  
Sequence Similarity ◽  
Phylogenetic Analyses ◽  
Rrna Gene ◽  
Phenotypic Data ◽  
Unidentified Phospholipid ◽  
Respiratory Quinone ◽  
Aegiceras Corniculatum ◽  
Content Type ◽  
Link Type

A Gram-stain-negative, aerobic, short-rod-shaped bacterium, designated strain CBS1P-1T, was isolated from a surface-sterilized bark of Aegiceras corniculatum. Growth of strain CBS1P-1T was observed with between 0 and 12.0 % (w/v) NaCl (optimally with 5.0 %) and at between pH 6.0–9.0. It grew at temperatures between 25–37 °C (optimum, 30 °C). Chemotaxonomic analysis showed that ubiquinone-10 was the respiratory quinone. The lipids comprised diphosphatidylglycerol, phosphatidylglycerol, an unidentified glycolipid, an unidentified phospholipid and an unidentified aminolipid. The major fatty acids of strain CBS1P-1T were C18 : 1  ω7c, C16 : 0 and C19 : 0 cyclo ω8c. Phylogenetic analyses based on 16S rRNA gene sequences showed that strain CBS1P-1T was most related to Pseudooceanicola antarcticus CGMCC 1.12662T with a sequence similarity of 96.5 %. The average nucleotide identity and digital DNA–DNA hybridization values between strain CBS1P-1T and P. antarcticus 1.12662T were 77.5 and 21.1 %, respectively. The G+C content of the genomic DNA was 67.3 mol%. Based on phylogenetic, chemotaxonomic and phenotypic data, strain CBS1P-1T is considered to represent a novel species of the genus Pseudooceanicola , for which the name Pseudooceanicola endophyticus is proposed. The type strain is CBS1P-1T (=KCTC 62836T=CGMCC 1.13743T).

scholarly journals Sneathiella aquimaris sp. nov., isolated from aquaculture seawater

2020 ◽  
Vol 70 (6) ◽  
pp. 3824-3831 ◽  
Author(s):  
Guizhen Li ◽  
Qiliang Lai ◽  
Peisheng Yan ◽  
Li Gu ◽  
Zongze Shao
Keyword(s):  
Type Species ◽  
Sequence Similarity ◽  
Rrna Gene ◽  
Chromosomal Dna ◽  
Phenotypic Data ◽  
Respiratory Quinone ◽  
Content Type ◽  
Link Type ◽  
Major Respiratory Quinone ◽  
Type Strains

A novel marine bacterium, designated strain 216LB-ZA1-12T, was isolated from a Penaeus vannamei aquaculture seawater sample. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain 216LB-ZA1-12T belonged to the genus Sneathiella , with the highest sequence similarity to Sneathiella glossodoripedis MKT133T (97.7 %), followed by Sneathiella limimaris GH1-24T (97.0 %), Sneathiella chungangensis CAU 1294T (96.6 %) and Sneathiella chinensis LMG 23452T (96.1 %). The average nucleotide identity and the DNA–DNA hybridization estimate values between strain 216LB-ZA1-12T and four close type strains were between 69.2–71.3% and 16.7–17.8 %, respectively. The bacterium was Gram-stain-negative, facultatively anaerobic, oxidase and catalase positive, oval- to rod-shaped, and motile. Growth was observed at pH 7–9, salinities of 1–15% and temperatures of 4–42 °C. The G+C content of the chromosomal DNA was 48.50 mol%. The major respiratory quinone was determined to be Q-10. The principal fatty acids were summed feature 8 (C18 : 1  ω7c/ω6c) and C16 : 0. The major polar lipids were diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylglycerol, phosphatidylcholine and aminophospholipid. The combined genotypic and phenotypic data show that strain 216LB-ZA1-12T represents a novel species within the genus Sneathiella , for which the name Sneathiella aquimaris sp. nov. is proposed, with the type strain 216LB-ZA1-12T (=MCCC 1A14570T=KCTC 72144T).

Croceimicrobium hydrocarbonivorans gen. nov., sp. nov., a novel marine bacterium isolated from a bacterial consortium that degrades polyethylene terephthalate

2021 ◽  
Vol 71 (4) ◽  
Author(s):  
Renju Liu ◽  
Qiliang Lai ◽  
Li Gu ◽  
Peisheng Yan ◽  
Zongze Shao
Keyword(s):  
Polyethylene Terephthalate ◽  
Type Species ◽  
Sequence Similarity ◽  
Phylogenetic Analyses ◽  
Rrna Gene ◽  
Phenotypic Data ◽  
Respiratory Quinone ◽  
Content Type ◽  
Link Type ◽  
The Family

A novel Gram-stain-negative, aerobic, gliding, rod-shaped and carotenoid-pigmented bacterium, designated A20-9T, was isolated from a microbial consortium of polyethylene terephthalate enriched from a deep-sea sediment sample from the Western Pacific. Growth was observed at salinities of 1–8 %, at pH 6.5–8 and at temperatures of 10–40 °C. The results of phylogenetic analyses based on the genome indicated that A20-9T formed a monophyletic branch affiliated to the family Schleiferiaceae , and the 16S rRNA gene sequences exhibited the maximum sequence similarity of 93.8 % with Owenweeksia hongkongensis DSM 17368T, followed by similarities of 90.4, 90.1 and 88.8 % with Phaeocystidibacter luteus MCCC 1F01079T, Vicingus serpentipes DSM 103558T and Salibacter halophilus MCCC 1K02288T, respectively. Its complete genome size was 4 035 598 bp, the genomic DNA G+C content was 43.2 mol%. Whole genome comparisons indicated that A20-9T and O. hongkongensis DSM 17368T shared 67.8 % average nucleotide identity, 62.7 % average amino acid identity value, 46.6% of conserved proteins and 17.8 % digital DNA–DNA hybridization identity. A20-9T contained MK-7 as the major respiratory quinone. Its major polar lipids were diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine and phospatidylcholine; and the major fatty acids were iso-C15 : 0 (37.5 %), iso-C16 : 0 3-OH (12.4 %), and summed feature 3 (C16 : 1ω7c /C16 : 1ω6c, 11.6 %). Combining the genotypic and phenotypic data, A20-9T could be distinguished from the members of other genera within the family Schleiferiaceae and represents a novel genus, for which the name Croceimicrobium hydrocarbonivorans gen. nov., sp. nov. is proposed. The type strain is A20-9T (=MCCC 1A17358T =KCTC 72878T).

Psychroserpens damuponensis sp. nov., isolated from seawater

2013 ◽  
Vol 63 (Pt_2) ◽  
pp. 703-708 ◽  
Author(s):  
Dong-Heon Lee ◽  
Sun Ja Cho ◽  
Suk Min Kim ◽  
Sun Bok Lee
Keyword(s):  
16S Rrna ◽  
16S Rrna Gene ◽  
Type Species ◽  
Sequence Similarity ◽  
Rrna Gene ◽  
Strictly Aerobic ◽  
Unidentified Phospholipid ◽  
Respiratory Quinone ◽  
Content Type ◽  
Link Type

A novel bacterium, designated strain F051-1T, isolated from a seawater sample collected from the coast at Damupo beach in Pohang, Korea, was investigated in a polyphasic taxonomic study. Cells were yellow-pigmented, strictly aerobic, Gram-staining-negative and rod-shaped. The temperature, pH and NaCl ranges for growth were 4–30 °C, pH 6.0–9.0 and 1.0–6.0 % (w/v), respectively. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain F051-1T belongs to the genus Psychroserpens in the family Flavobacteriaceae . Its closest relatives were Psychroserpens burtonensis ACAM 188T (96.8 % 16S rRNA gene sequence similarity) and Psychroserpens mesophilus KOPRI 13649T (95.7 %). The major cellular fatty acids were iso-C15 : 0, iso-C15 : 1 G and anteiso-C15 : 0. The polar lipid profile consisted of a mixture of phosphatidylethanolamine, two unidentified aminolipids, one unidentified phospholipid and eight unidentified lipids. The major respiratory quinone was menaquinone-6 and the genomic DNA G+C content of the strain was 33.5 mol%. On the basis of phenotypic, phylogenetic and genotypic data, strain F051-1T represents a novel species within the genus Psychroserpens , for which the name Psychroserpens damuponensis sp. nov. is proposed. The type strain is F051-1T ( = KCTC 23539T  = JCM 17632T).

scholarly journals Lysobacter profundi sp. nov., isolated from freshwater sediment and reclassification of Lysobacter panaciterrae as Luteimonas panaciterrae comb. nov.

2020 ◽  
Vol 70 (6) ◽  
pp. 3878-3887 ◽  
Author(s):  
Chun-Zhi Jin ◽  
Xiuli Song ◽  
Yun Ju Sung ◽  
Feng-Jie Jin ◽  
Taihua Li ◽  
...  
Keyword(s):  
16S Rrna ◽  
16S Rrna Gene ◽  
Type Strain ◽  
Type Species ◽  
Rrna Gene ◽  
Phenotypic Data ◽  
Unidentified Phospholipid ◽  
Respiratory Quinone ◽  
Content Type ◽  
Link Type

A polyphasic taxonomic study was carried out on strains CHu50b-3-2T and CHu40b-3-1 isolated from a 67 cm-long sediment core collected from the Daechung Reservoir at a water depth of 17 m, Daejeon, Republic of Korea. The cells of the strains were Gram-stain-negative, non-spore-forming, non-motile and rod-shaped. Comparative 16S rRNA gene sequence studies showed a clear affiliation of two strains with γ-Proteobacteria, which showed the highest pairwise sequence similarities to Lysobacter hankyongensis KTce-2T (96.5 %), Lysobacter pocheonensis Gsoil193T (96.3 %), Lysobacter ginsengisoli Gsoil 357T (96.1 %), Lysobacter solanacearum T20R-70T (96.1 %), Lysobacter brunescens KCTC 12130T (95.4 %) and Lysobacter capsici YC5194T (95.3 %). The phylogenetic analysis based on 16S rRNA gene sequences showed that the strains formed a clear phylogenetic lineage with the genus Lysobacter . The major fatty acids were identified as summed feature 9 (iso-C17 : 1  ω9c and/or C18 : 1 10-methyl), iso-C15 : 0, iso-C16 : 0 and iso-C17 : 0. The respiratory quinone was identified as ubiquinone Q-8. The major polar lipids were phosphatidylglycerol, diphosphatidylglycerol, phosphatidylethanolamine and an unidentified phospholipid. The genomic DNA G+C content was determined to be 66.8 mol% (genome) for strain CHu50b-3-2T and 66.4 mol% (HPLC) for strain CHu40b-3-1. Based on the combined genotypic and phenotypic data, we propose that strains CHu50b-3-2T and CHu40b-3-1 represent a novel species of the genus Lysobacter , for which the name Lysobacter profundi sp. nov. is proposed. The type strain is CHu50b-3-2T (=KCTC 72973T=CCTCC AB 2019129T). Besides Lysobacter panaciterrae Gsoil 068T formed a phylogenetic group together with strain Luteimonas aquatica RIB1-20T (EF626688) that is clearly separated from all other known Lysobacter strains. Based on the phylogenetic relationships together with fatty acid compositions, Lysobacter panaciterrae Gsoil 068T should be reclassified as a member of the genus Luteimonas: Luteimonas aquatica comb. nov. (type strain Gsoil 068T=KCTC 12601T=DSM 17927T).

Mucilaginibacter inviolabilis sp. nov., isolated from the phycosphere of Haematococcus lacustris NIES 144 culture

2021 ◽  
Author(s):  
Sang-Ah Lee ◽  
Ve Van Le ◽  
So-Ra Ko ◽  
Nakyeong Lee ◽  
Hee-Mock Oh ◽  
...  
Keyword(s):  
Type Species ◽  
Gene Sequence ◽  
Sequence Similarity ◽  
Rrna Gene ◽  
Unidentified Phospholipid ◽  
Respiratory Quinone ◽  
Content Type ◽  
Link Type ◽  
Haematococcus Lacustris ◽  
The 16S Rrna Gene

A Gram-stain-negative, non-motile, rod-shaped, aerobic bacterial strain, designated HC2T, was isolated from the phycosphere of Haematococcus lacustris NIES 144 culture. Strain HC2T was able to grow at pH 4.5–8.0, at 4–32 °C and in the presence of 0–2 % (w/v) NaCl. Phylogenetic analysis of the 16S rRNA gene sequence revealed that strain HC2T was affiliated to the genus Mucilaginibacter and shared the highest sequence similarity with Mucilaginibacter lappiensis ANJKI2T (98.20 %) and Mucilaginibacter sabulilitoris SMS-12T (98.06 %). Strain HC2T contained summed feature 3 (C16 : 1 ω7c and/or C16 : 1 ω6c) and iso-C15 : 0 as the major fatty acids (>10.0 %). The major polar lipids were phosphatidylethanolamine, one unidentified aminophospholipid, one unidentified phospholipid, two unidentified aminolipids and four unidentified lipids. The respiratory quinone was menaquinone 7 (MK-7). The genomic DNA G+C content was 42.0 %. On the basis of the phenotypic, chemotaxonomic and phylogenetic characteristics, strain HC2T represents a novel species of the genus Mucilaginibacter, for which the name Mucilaginibacter inviolabilis sp. nov. is proposed. The type strain is HC2T (=KCTC 82084T=JCM 34116T).

Litoreibacter roseus sp. nov., a novel bacteriochlorophyll a-containing bacterium

2021 ◽  
Author(s):  
Masataka Kanamuro ◽  
Yuki Sato-Takabe ◽  
So Muramatsu ◽  
Setsuko Hirose ◽  
Yuki Muramatsu ◽  
...  
Keyword(s):  
Type Strain ◽  
Type Species ◽  
Near Infrared ◽  
Sequence Similarity ◽  
Rrna Gene ◽  
Strictly Aerobic ◽  
Phenotypic Data ◽  
Respiratory Quinone ◽  
Content Type ◽  
Link Type

A strictly aerobic, bacteriochlorophyll (BChl) a-containing alphaproteobacterium, designated strain K6T, was isolated from seawater around an aquaculture site in the Uwa Sea in Japan. The novel strain grew optimally at 30 °C at pH 7.0–7.5 and in the presence of 2.0 % (w/v) NaCl. The nonmotile and coccoid or rod-shaped cells formed pink-pigmented colonies on agar plates containing organic compounds. Cells showed an in vivo absorption maximum at 870 nm in the near-infrared region, indicating the presence of BChl a in the light-harvesting 1 complex. The new bacterial strain was Gram-stain-negative and oxidase- and catalase-positive. Phylogenetic analysis based on the 16S rRNA gene sequence showed that strain K6T was closely related to species in the genus Litoreibacter . The closest phylogenetic relatives of strain K6T were Litoreibacter ponti GJSW-31T (98.56 % sequence similarity), Litoreibacter janthinus KMM 3842T (97.63 %) and Litoreibacter albidus KMM 3851T (96.88 %). The G+C content of the genomic DNA was 58.26 mol%. The average nucleotide identity value of strain K6T with the type strain of L. ponti was 77.16 % (SD 4.79 %). The digital DNA−DNA hybridization value of strain K6T with the type strain of L. ponti was 19.40 %. The respiratory quinone was ubiquinone-10. The major cellular fatty acids were C18 : 1 ω7c, C16 : 0 and 11-methyl C18 : 1 ω7c. The dominant polar lipids were phosphatidylcholine and phosphatidylglycerol. On the basis of the genetic and phenotypic data obtained in the present study, we propose a new species in the genus Litoreibacter : Litoreibacter roseus sp. nov., whose type strain is K6T (=DSM 110109T=NBRC 114114T). Strain K6T represents the first confirmed species that produces BChl a within the genus Litoreibacter .

Parvularcula dongshanensis sp. nov., isolated from soft coral

2013 ◽  
Vol 63 (Pt_6) ◽  
pp. 2114-2117 ◽  
Author(s):  
Zhiwei Yu ◽  
Qiliang Lai ◽  
Guizhen Li ◽  
Zongze Shao
Keyword(s):  
16S Rrna ◽  
16S Rrna Gene ◽  
Type Species ◽  
Soft Coral ◽  
Sequence Similarity ◽  
Rrna Gene ◽  
Chromosomal Dna ◽  
Phenotypic Data ◽  
Content Type ◽  
Link Type

A taxonomic study was carried out on strain SH25T, which was isolated from soft coral collected from Dongshan Island, China. The isolate was a heterotrophic organism to the soft coral, and was a Gram-reaction-negative, short rod that was motile by a polar flagellum. Growth was observed at salinities from 0 to 12 % and at temperatures from 10 to 41 °C. It was unable to reduce nitrate to nitrite. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain SH25T belonged to the genus Parvularcula , with highest sequence similarity to Parvularcula lutaonensis CC-MMS-1T (96.1 %) and Parvularcula bermudensis HTCC2503T (94.3 %); 16S rRNA gene sequence similarities to other taxa were below 90.0 %. The dominant fatty acids were C16 : 0 and summed feature 8 (C18 : 1ω7c/ω6c,). The G+C content of the chromosomal DNA was 61.8 mol%. The major quinone was Q10. These combined genotypic and phenotypic data show that strain SH25T represents a novel species of the genus Parvularcula , for which the name Parvularcula dongshanensis sp. nov. is proposed. The type strain is SH25T ( = CCTCC AB 2010355T = LMG 26158T = MCCC 1A06534T).

scholarly journals Marinicella rhabdoformis sp. nov., isolated from coastal sediment

2020 ◽  
Vol 70 (5) ◽  
pp. 3528-3533 ◽  
Author(s):  
Yan-lin Zhong ◽  
Xun-Ke Sun ◽  
Jian-Gang Hui ◽  
Hui-ling Teng ◽  
Zong-Jun Du
Keyword(s):  
Type Species ◽  
Sequence Similarity ◽  
Optimal Growth ◽  
Amino Acid Identity ◽  
Coastal Sediment ◽  
Rrna Gene ◽  
Respiratory Quinone ◽  
Content Type ◽  
Link Type ◽  
Pr China

A Gram-stain-negative, rod-shaped, facultative anaerobic bacterium, designated strain 3539T, was isolated from coastal sediment of Weihai, PR China. Optimal growth occurred at 28 °C, pH 7.5–8.0 and in the presence of 3.0 % (w/v) NaCl. Results of phylogenetic analysis based on 16S rRNA gene sequences revealed that strain 3539T formed a robust clade with members of the genus Marinicella and was closely related to Marinicella litoralis JCM 16154T, Marinicella sediminis F2T and Marinicella pacifica sw153T with 97.7, 96.2 and 95.4 % sequence similarity, respectively. The average amino acid identity, percentage of conserved proteins, average nucleotide identity and digital DNA–DNA hybridization values between strain 3539T and M. litoralis JCM 16154T were 64.9, 68.3, 72.8 and 18.9 %, respectively. The genomic DNA G+C content of strain 3539T was 42.0 mol%. The dominant respiratory quinone was ubiquinone-8, and the major fatty acids were iso-C15 : 0 and summed feature 3 (C16 : 1  ω7c/C16 : 1  ω6c). The polar lipids of strain 3539T consisted of phosphatidyldimethylethanolamine, phosphatidylethanolamine, phosphatidylglycerol, phosphatidylcholine, one unidentified aminophospholipid, one unidentified lipid and three unidentified phospholipids. Based on the combination of phylogenetic, phenotypic and chemotaxonomic data, strain 3539T is considered to represent a novel species within the genus Marinicella in he family Alcanivoracaceae , for which the name Marinicella rhabdoformis sp. nov. is proposed. The type strain of the new species is 3539T (=KCTC 72414T=MCCC 1H00388T).

scholarly journals Alkalicaulis satelles gen. nov., sp. nov., a novel haloalkaliphile isolated from a laboratory culture cyanobacterium Geitlerinema species and proposals of Maricaulaceae fam. nov., Robiginitomaculaceae fam. nov., Maricaulales ord. nov. and Hyphomonadales ord. nov.

2020 ◽  
Author(s):  
Vadim Kevbrin ◽  
Yulia Boltyanskaya ◽  
Veronika Koziaeva ◽  
Maria Uzun ◽  
Denis Grouzdev
Keyword(s):  
16S Rrna ◽  
Type Species ◽  
Sequence Similarity ◽  
Rrna Gene ◽  
The Novel ◽  
Phenotypic Data ◽  
Respiratory Quinone ◽  
Content Type ◽  
Link Type ◽  
The Family

A prosthecate bacterial strain, designated G-192T, was isolated from decaying biomass of a haloalkaliphilic cyanobacterium Geitlerinema sp. Z-T0701. The cells were aerobic, Gram-negative, non-endospore-forming and dimorphic, occurring either as sessile bacteria with a characteristic stalk or as motile flagellated cells. The strain utilized a limited range of substrates, mostly peptonaceous, but was able to degrade whole proteins. Growth occurred at 5–46 °C (optimum, 35–40 °C), pH 7.3–10.3 (optimum, pH 8.0–9.0), 0–14 % NaCl (v/w; optimum, 2.0–6.0 %, v/w). The G+C content of the genomic DNA of strain G-192T was 66.8%. Phylogenetic analysis of the 16S rRNA gene sequence revealed that strain G-192T formed a distinct evolutionary lineage within the family Hyphomonadaceae . Strain G-192T showed the highest 16S rRNA sequence similarity to Glycocaulis profundi ZYF765T (95.2%), Oceanicaulis stylophorae GISW-4T (94.2%) and Marinicauda salina WD6-1T (95.5%). The major cellular fatty acids (>5% of the total) were C18:1 ω9c, C18:0 and 11-methyl-C18:1 ω7c. The major polar lipids were glycolipids and phospholipids. The only respiratory quinone was ubiquinone-10 (Q-10). Based on polyphasic results including phylogenomic data, the novel strain could be distinguished from other genera, which suggests that strain G-192T represents a novel species of a new genus, for which the name Alkalicaulis satelles gen. nov., sp. nov. is proposed. The type strain is G-192T (=VKM B-3306T=KCTC 72746T). The strain is the first representative of the stalked bacteria associated with a haloalkaliphilic cyanobacterium. Based on phylogenomic indices and phenotypic data, it is proposed to evolve two novel families Maricaulaceae fam. nov. and Robiginitomaculaceae fam. nov. out of the current family Hyphomonadaceae . In addition, it is proposed to place the first two families in the novel order Maricaulales ord. nov. and novel order Hyphomonadales ord. nov. is proposed to accommodate the family Hyphomonadaceae .

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