AI Article Synopsis
- Two new bacterial strains, Z1 and JL1, were identified from marine algae, characterized as Gram-negative, motile, and capable of growing in varying salinities and temperatures.
- They share 99.9% similarity in their 16S rRNA gene sequences and have similar genomic content (G+C content at 45.1 mol%).
- Phylogenetic analysis indicates that these strains form a distinct lineage within their class, leading to the proposal of a new species under a novel genus, with strain Z1 designated as the type strain.
Article Abstract
Two novel agar-degrading, Gram-stain-negative, motile, heterotrophic, facultatively anaerobic and pale yellow-pigmented bacterial strains, designated Z1 and JL1, were isolated from marine algae (Lamouroux) and , respectively. Growth of the isolates was optimal at 28-30 °C, pH 7.0-7.5 and with 2-3 % (w/v) NaCl. Both strains contained Q-8 as the sole respiratory quinone. The major cellular fatty acids in strain Z1 were Cω7, C and summed feature 3 (Cω7 and/or iso-C 2-OH). The predominant polar lipids in strain Z1 were phosphatidylethanolamine, phosphatidylglycerol and an aminolipid. The genomic DNA G+C content of both strains was 45.1 mol%. Strains Z1 and JL1 were closely related, with 99.9 % 16S rRNA gene sequence similarity. The average nucleotide identity (ANI) value between strains Z1 and JL1 was 99.3 %. Phylogenetic analysis based on 16S rRNA gene sequences revealed that strains Z1 and JL1 form a distinct phyletic line within the class , with less than 92.3 % similarity to their closest relatives. Based on data from the current polyphasic study, the isolates are proposed to belong to a novel species of a new genus designated gen. nov., sp. nov. The type strain of the type species is Z1 ( = ATCC BAA-2617 = CICC 10859).
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| http://dx.doi.org/10.1099/ijsem.0.000925 | DOI Listing |
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