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Abstract
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).
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Funding
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the Natural Science Foundation of SZU
(Award 201427)
- Principle Award Recipient: SiChen
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the Natural Science Foundation of SZU
(Award 2019078)
- Principle Award Recipient: ChenjingShang
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the Graduate Education Innovation Project
(Award 2020JGXM094)
- Principle Award Recipient: ChenjingShang
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State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences
(Award No. LTO1909)
- Principle Award Recipient: ChenjingShang
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the Natural Science Foundation of Guangdong Province,
(Award 2017A030310332)
- Principle Award Recipient: ChenjingShang
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the Natural Science Foundation of Guangdong Province
(Award 2019A1515012047)
- Principle Award Recipient: SiChen
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the Scientific and Technical Innovation Council of Shenzhen
(Award KQJSCX20170727101743831)
- Principle Award Recipient: XuYing
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the National Natural Science Foundation of China
(Award 41406095)
- Principle Award Recipient: SiChen
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Innovative Research Group Project of the National Natural Science Foundation of China (CN)
(Award 41706137)
- Principle Award Recipient: ChenjingShang
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the National Key R&D Program of China
(Award 2018YFA0902500)
- Principle Award Recipient: ChenjingShang