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Strategies among phytoplankton in response to alleviation of nutrient stress in a subtropical gyre.

Publication ,  Journal Article
Lampe, RH; Wang, S; Cassar, N; Marchetti, A
Published in: The ISME journal
December 2019

Despite generally low primary productivity and diatom abundances in oligotrophic subtropical gyres, the North Atlantic Subtropical Gyre (NASG) exhibits significant diatom-driven carbon export on an annual basis. Subsurface pulses of nutrients likely fuel brief episodes of diatom growth, but the exact mechanisms utilized by diatoms in response to these nutrient injections remain understudied within near-natural settings. Here we simulated delivery of subsurface nutrients and compare the response among eukaryotic phytoplankton using a combination of physiological techniques and metatranscriptomics. We show that eukaryotic phytoplankton groups exhibit differing levels of transcriptional responsiveness and expression of orthologous genes in response to release from nutrient limitation. In particular, strategies for use of newly delivered nutrients are distinct among phytoplankton groups. Diatoms channel new nitrate to growth-related strategies while physiological measurements and gene expression patterns of other groups suggest alternative strategies. The gene expression patterns displayed here provide insights into the cellular mechanisms that underlie diatom subsistence during chronic nitrogen-depleted conditions and growth upon nutrient delivery that can enhance carbon export from the surface ocean.

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Published In

The ISME journal

DOI

EISSN

1751-7370

ISSN

1751-7362

Publication Date

December 2019

Volume

13

Issue

12

Start / End Page

2984 / 2997

Related Subject Headings

  • Seawater
  • Phytoplankton
  • Nutrients
  • Nitrogen
  • Nitrates
  • Microbiology
  • Gene Expression
  • Diatoms
  • Carbon
  • Atlantic Ocean
 

Citation

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Lampe, R. H., Wang, S., Cassar, N., & Marchetti, A. (2019). Strategies among phytoplankton in response to alleviation of nutrient stress in a subtropical gyre. The ISME Journal, 13(12), 2984–2997. https://doi.org/10.1038/s41396-019-0489-6
Lampe, Robert H., Seaver Wang, Nicolas Cassar, and Adrian Marchetti. “Strategies among phytoplankton in response to alleviation of nutrient stress in a subtropical gyre.The ISME Journal 13, no. 12 (December 2019): 2984–97. https://doi.org/10.1038/s41396-019-0489-6.
Lampe RH, Wang S, Cassar N, Marchetti A. Strategies among phytoplankton in response to alleviation of nutrient stress in a subtropical gyre. The ISME journal. 2019 Dec;13(12):2984–97.
Lampe, Robert H., et al. “Strategies among phytoplankton in response to alleviation of nutrient stress in a subtropical gyre.The ISME Journal, vol. 13, no. 12, Dec. 2019, pp. 2984–97. Epmc, doi:10.1038/s41396-019-0489-6.
Lampe RH, Wang S, Cassar N, Marchetti A. Strategies among phytoplankton in response to alleviation of nutrient stress in a subtropical gyre. The ISME journal. 2019 Dec;13(12):2984–2997.

Published In

The ISME journal

DOI

EISSN

1751-7370

ISSN

1751-7362

Publication Date

December 2019

Volume

13

Issue

12

Start / End Page

2984 / 2997

Related Subject Headings

  • Seawater
  • Phytoplankton
  • Nutrients
  • Nitrogen
  • Nitrates
  • Microbiology
  • Gene Expression
  • Diatoms
  • Carbon
  • Atlantic Ocean