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INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY logo International Journal of Systematic and Evolutionary Microbiology

Volume 76, Issue 4

sp. nov. and sp. nov.: two novel members isolated from rhizosphere and root in L. No Access

Abstract

Two novel bacterial strains, designated as strains 483ᵀ and 357ᵀ, were isolated from the rhizosphere and root, respectively, of L. collected from Lake Notoro, Hokkaido, Japan. Strain 357ᵀ was motile, whereas strain 483ᵀ was non-motile. Both strains grew at 10–40 °C (optimum, 30 °C), pH 5.5–9.0 (optimum, pH 6.0) and 0–15.94% (w/v) NaCl (optimum, 1.94%). Based on 16S rRNA gene sequences, strain 483ᵀ was most similar to GH1ᵀ (99.7%), while strain 357ᵀ was closely related to NZ-12Bᵀ and S-5ᵀ (both 98.7%). Phylogenetic analysis based on 16S rRNA gene sequences revealed that strains 483ᵀ and 357ᵀ clustered with GH1ᵀ and NZ-12Bᵀ, respectively. Whole-genome phylogeny showed consistent results. DNA G+C contents were 59.9 mol% (strain 483ᵀ) and 65.4 mol% (strain 357ᵀ). The average nucleotide identity (ANI), fastANI and digital DNA–DNA hybridization values between the novel strains and their closest relatives were 82.8–85.5%, 82.8–85.5% and 25.2–26.3%, respectively. Both strains contained ubiquinone-10 as the sole respiratory quinone. The major fatty acids in strain 483ᵀ were C 2-OH and summed feature 8 (C ω), differing from . In strain 357ᵀ, C ω and summed feature 8 predominated, similar to and . Polar lipids of strain 483ᵀ were mainly phosphatidylcholine, phosphatidylethanolamine, phosphatidylglycerol, diphosphatidylglycerol, sphingoglycolipid and five unidentified lipids, whereas strain 357ᵀ mainly contained phosphatidylcholine, phosphatidylglycerol, diphosphatidylglycerol, sphingoglycolipid and three unidentified lipids. Based on these results, strains 483ᵀ and 357ᵀ represent novel species of and , for which the names sp. nov. and sp. nov. are proposed. The type strains are strain 483ᵀ (=NRIC 2006ᵀ=JCM 36263ᵀ=NCIMB 15619ᵀ=DSM 120134) and strain 357ᵀ (=NRIC 2005ᵀ=JCM 36262ᵀ=NCIMB 15618ᵀ=DSM 120133).

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Keyword(s): Alteriqipengyuania triglochinis , polyphasic taxonomy , Qipengyuania triglochinis , rhizosphere and Triglochin maritima L.
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2026-04-02
2026-04-22

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Qipengyuania triglochinis sp. nov. and Alteriqipengyuania triglochinis sp. nov.: two novel Erythrobacteraceae members isolated from rhizosphere and root in Triglochin maritima L.
Int J Syst Evol Microbiol 76, 007113 (2026); https://doi.org/10.1099/ijsem.0.007113
/content/journal/ijsem/10.1099/ijsem.0.007113
/content/journal/ijsem/10.1099/ijsem.0.007113
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