Unveiling the contribution of particle-associated non-cyanobacterial diazotrophs to N fixation in the upper mesopelagic North Pacific Gyre.
Fuente:
PubMed
Saved in:
| Main Authors: | , , , , , , , , , , , , , |
|---|---|
| Format: | Artículo científico |
| Language: | en |
| Published: |
Communications biology
2025
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1868266239828164608 |
|---|---|
| author | Reeder, Christian F Filella, Alba Voznyuk, Anna Coët, Arthur James, Reece C Rohrer, Tully White, Angelicque E Berline, Léo Grosso, Olivier van Dijken, Gert Arrigo, Kevin R Mills, Matthew M Turk-Kubo, Kendra A Benavides, Mar |
| author_facet | Reeder, Christian F Filella, Alba Voznyuk, Anna Coët, Arthur James, Reece C Rohrer, Tully White, Angelicque E Berline, Léo Grosso, Olivier van Dijken, Gert Arrigo, Kevin R Mills, Matthew M Turk-Kubo, Kendra A Benavides, Mar Reeder, Christian F Filella, Alba Voznyuk, Anna Coët, Arthur James, Reece C Rohrer, Tully White, Angelicque E Berline, Léo Grosso, Olivier van Dijken, Gert Arrigo, Kevin R Mills, Matthew M Turk-Kubo, Kendra A Benavides, Mar |
| collection | PubMed - marine biology |
| contents | Unveiling the contribution of particle-associated non-cyanobacterial diazotrophs to N fixation in the upper mesopelagic North Pacific Gyre. Reeder, Christian F Filella, Alba Voznyuk, Anna Coët, Arthur James, Reece C Rohrer, Tully White, Angelicque E Berline, Léo Grosso, Olivier van Dijken, Gert Arrigo, Kevin R Mills, Matthew M Turk-Kubo, Kendra A Benavides, Mar Nitrogen Fixation Pacific Ocean Cyanobacteria Seawater Gammaproteobacteria Dinitrogen (N) fixation supports marine life through the supply of reactive nitrogen. Recent studies suggest that particle-associated non-cyanobacterial diazotrophs (NCDs) could contribute significantly to N fixation contrary to the paradigm of diazotrophy as primarily driven by cyanobacterial genera. We examine the community composition of NCDs associated with suspended, slow, and fast-sinking particles in the North Pacific Subtropical Gyre. Suspended and slow-sinking particles showed a higher abundance of cyanobacterial diazotrophs than fast-sinking particles, while fast-sinking particles showed a higher diversity of NCDs including Marinobacter, Oceanobacter and Pseudomonas. Using single-cell mass spectrometry we find that Gammaproteobacteria N fixation rates were higher on suspended and slow-sinking particles (up to 67 ± 48.54 fmol N cell⁻¹ d⁻¹), while putative NCDs' rates were highest on fast-sinking particles (121 ± 22.02 fmol N cell⁻¹ d⁻¹). These rates are comparable to previous diazotrophic cyanobacteria observations, suggesting that particle-associated NCDs may be important contributors to pelagic N fixation. |
| format | Artículo científico |
| id | pubmed_39987204 |
| institution | PubMed |
| language | en |
| publishDate | 2025 |
| publisher | Communications biology |
| record_format | pubmed |
| spellingShingle | Unveiling the contribution of particle-associated non-cyanobacterial diazotrophs to N fixation in the upper mesopelagic North Pacific Gyre. Reeder, Christian F Filella, Alba Voznyuk, Anna Coët, Arthur James, Reece C Rohrer, Tully White, Angelicque E Berline, Léo Grosso, Olivier van Dijken, Gert Arrigo, Kevin R Mills, Matthew M Turk-Kubo, Kendra A Benavides, Mar Nitrogen Fixation Pacific Ocean Cyanobacteria Seawater Gammaproteobacteria Unveiling the contribution of particle-associated non-cyanobacterial diazotrophs to N fixation in the upper mesopelagic North Pacific Gyre. Reeder, Christian F Filella, Alba Voznyuk, Anna Coët, Arthur James, Reece C Rohrer, Tully White, Angelicque E Berline, Léo Grosso, Olivier van Dijken, Gert Arrigo, Kevin R Mills, Matthew M Turk-Kubo, Kendra A Benavides, Mar Nitrogen Fixation Pacific Ocean Cyanobacteria Seawater Gammaproteobacteria Dinitrogen (N) fixation supports marine life through the supply of reactive nitrogen. Recent studies suggest that particle-associated non-cyanobacterial diazotrophs (NCDs) could contribute significantly to N fixation contrary to the paradigm of diazotrophy as primarily driven by cyanobacterial genera. We examine the community composition of NCDs associated with suspended, slow, and fast-sinking particles in the North Pacific Subtropical Gyre. Suspended and slow-sinking particles showed a higher abundance of cyanobacterial diazotrophs than fast-sinking particles, while fast-sinking particles showed a higher diversity of NCDs including Marinobacter, Oceanobacter and Pseudomonas. Using single-cell mass spectrometry we find that Gammaproteobacteria N fixation rates were higher on suspended and slow-sinking particles (up to 67 ± 48.54 fmol N cell⁻¹ d⁻¹), while putative NCDs' rates were highest on fast-sinking particles (121 ± 22.02 fmol N cell⁻¹ d⁻¹). These rates are comparable to previous diazotrophic cyanobacteria observations, suggesting that particle-associated NCDs may be important contributors to pelagic N fixation. |
| title | Unveiling the contribution of particle-associated non-cyanobacterial diazotrophs to N fixation in the upper mesopelagic North Pacific Gyre. |
| topic | Nitrogen Fixation Pacific Ocean Cyanobacteria Seawater Gammaproteobacteria |
| url | https://pubmed.ncbi.nlm.nih.gov/39987204/ |