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Abstract

A Gram-negative, rod-shaped and light pink-pigmented bacterial strain, designated Amp-Y-6, was isolated from the culture of a dinoflagellate CCMP1314. It can produce bacteriochlorophyll . The 16S rRNA gene of strain Amp-Y-6 had the highest sequence similarity with CCMM001 of 98.1%. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain Amp-Y-6 was affiliated to the genus and formed a monophyletic clade with CCMM001 and ML6. The digital DNA–DNA hybridization, average nucleotide identity and average amino acid identity between strain Amp-Y-6 and the two phylogenetic relatives were 22.7–22.8, 80.4–80.5 and 79.5–80.2%, respectively. The respiratory quinone was Q-10. The major fatty acid composition was summed feature 8 (C and/or C ). The draft genome size was 3.8 Mbp with a genomic G+C content of 68.1 mol%. Gene annotation showed that Amp-Y-6 contained a gene cluster responsible for the C-P degradation, indicating that it had the potential to provide a phosphate source for the dinoflagellate. Based on the phylogenetic, phenotypic and chemotaxonomic characteristics, strain Amp-Y-6 represents a novel species, for which the name sp. nov. is proposed. The type strain is Amp-Y-6 (=MCCC 1K08249=KCTC 92882).

Funding
This study was supported by the:
  • Quanzhou City Science and Technology Program (Award No. 2022C018R)
    • Principal Award Recipient: ZhaobinHuang
  • Natural Science Foundation of Fujian Province, China (Award No. 2023J01896)
    • Principal Award Recipient: YudongCui
  • Natural Science Foundation of China (Award No. 42306167)
    • Principal Award Recipient: YudongCui
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/content/journal/ijsem/10.1099/ijsem.0.006682
2025-02-26
2026-02-10

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