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Thalassolituus haligoni sp. nov., BB40, a model species for non-cyanobacterial diazotrophs within Oceanospirillales isolated from a Fjord-like Inlet in Kjipuktuk
bioRxiv · · Preprint · Open access
LaRoche, Rose + 5 more
Abstract ↗AI summary
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Thalassolituus haligoni BB40, an Oceanospirillales non-cyanobacterial diazotroph from a fjord-like inlet in Kjipuktuk, shows N2 fixation rates from 9.34 x 10-6 to 1.4 x 10-1 fmol N cell-1 day-1.
- Why it matters: Pure-culture representatives of marine non-cyanobacterial diazotrophs are scarce, limiting understanding of their physiology, growth, substrate use, and dinitrogen fixation.
- What they did: The team isolated BB40 from the Kjipuktuk inlet, sequenced its genome, and measured growth and N2 fixation across nitrogen sources and temperatures, including Topt values for N2 and fixed nitrogen.
- The result: BB40 grew from 4 oC to 35 oC with a Topt of 20 oC for N2 and 27–30 oC for NO3- and NH3, while N2 fixation remained detectable under all tested conditions.
The findingWhy it mattersWhat they didThe result
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- Open access
- 2 cites