Phytoplankton antioxidant systems and their contributions to cellular elemental stoichiometry

J. Scott P. McCain; Erin M. Bertrand

doi:10.1002/lol2.10233

Phytoplankton antioxidant systems and their contributions to cellular elemental stoichiometry

J. Scott P. McCain, Erin M. Bertrand

Medicine

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

Oxidative stress plays a role in many aspects of cellular metabolism, and as a result, antioxidants have the potential to impact cellular stoichiometry and biogeochemical cycles. We reviewed how antioxidant systems influence macronutrient and micronutrient stoichiometry in marine phytoplankton and identified that antioxidant systems have important implications for micronutrient stoichiometry. By leveraging diatom proteomic data, we empirically estimated the level of micronutrient quota variation that can be attributed to antioxidant systems. Fe-containing antioxidant expression may contribute to 3.3–10 μmol : mol variation in Fe : C, and superoxide dismutases appear to be important contributors to variation in Mn, Ni, Zn, and Cu quotas in phytoplankton. Critical next steps for the study of phytoplankton antioxidant systems are to (1) distinguish between oxidative stress and redox-based gene regulation and (2) determine how antioxidants influence variation or consistency in micronutrient quotas under various environmental conditions.

Original language	English
Pages (from-to)	96-111
Number of pages	16
Journal	Limnology And Oceanography Letters
Volume	7
Issue number	2
DOIs	https://doi.org/10.1002/lol2.10233
Publication status	Published - Apr 2022

Bibliographical note

Funding Information:
We thank Doug Campbell, Chris Algar, Julie LaRoche, Rob Beiko, Noor Youssef, Loay Jabre, Elden Rowland, Naaman Omar, and Ed Susko for discussions. Thanks to Tom Delmont for correspondence about metagenome assembled genomes. Thank you to Ben Twining for reviewing this manuscript and the other anonymous reviewer. JSPM acknowledges support from the NSERC CREATE Transatlantic Ocean System Science and Technology Program and the Killam Scholarship. This project was financially supported by NSERC Discovery Grant RGPIN‐2015‐05009 to EMB, Simons Foundation Grant 504183 to EMB, an NSERC CGS Postgraduate scholarship to JSPM.

Publisher Copyright:
© 2021 The Authors. Limnology and Oceanography Letters published by Wiley Periodicals LLC on behalf of Association for the Sciences of Limnology and Oceanography.

ASJC Scopus Subject Areas

Aquatic Science
Oceanography

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1002/lol2.10233

Cite this

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title = "Phytoplankton antioxidant systems and their contributions to cellular elemental stoichiometry",

abstract = "Oxidative stress plays a role in many aspects of cellular metabolism, and as a result, antioxidants have the potential to impact cellular stoichiometry and biogeochemical cycles. We reviewed how antioxidant systems influence macronutrient and micronutrient stoichiometry in marine phytoplankton and identified that antioxidant systems have important implications for micronutrient stoichiometry. By leveraging diatom proteomic data, we empirically estimated the level of micronutrient quota variation that can be attributed to antioxidant systems. Fe-containing antioxidant expression may contribute to 3.3–10 μmol : mol variation in Fe : C, and superoxide dismutases appear to be important contributors to variation in Mn, Ni, Zn, and Cu quotas in phytoplankton. Critical next steps for the study of phytoplankton antioxidant systems are to (1) distinguish between oxidative stress and redox-based gene regulation and (2) determine how antioxidants influence variation or consistency in micronutrient quotas under various environmental conditions.",

author = "McCain, {J. Scott P.} and Bertrand, {Erin M.}",

note = "Funding Information: We thank Doug Campbell, Chris Algar, Julie LaRoche, Rob Beiko, Noor Youssef, Loay Jabre, Elden Rowland, Naaman Omar, and Ed Susko for discussions. Thanks to Tom Delmont for correspondence about metagenome assembled genomes. Thank you to Ben Twining for reviewing this manuscript and the other anonymous reviewer. JSPM acknowledges support from the NSERC CREATE Transatlantic Ocean System Science and Technology Program and the Killam Scholarship. This project was financially supported by NSERC Discovery Grant RGPIN‐2015‐05009 to EMB, Simons Foundation Grant 504183 to EMB, an NSERC CGS Postgraduate scholarship to JSPM. Publisher Copyright: {\textcopyright} 2021 The Authors. Limnology and Oceanography Letters published by Wiley Periodicals LLC on behalf of Association for the Sciences of Limnology and Oceanography.",

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N2 - Oxidative stress plays a role in many aspects of cellular metabolism, and as a result, antioxidants have the potential to impact cellular stoichiometry and biogeochemical cycles. We reviewed how antioxidant systems influence macronutrient and micronutrient stoichiometry in marine phytoplankton and identified that antioxidant systems have important implications for micronutrient stoichiometry. By leveraging diatom proteomic data, we empirically estimated the level of micronutrient quota variation that can be attributed to antioxidant systems. Fe-containing antioxidant expression may contribute to 3.3–10 μmol : mol variation in Fe : C, and superoxide dismutases appear to be important contributors to variation in Mn, Ni, Zn, and Cu quotas in phytoplankton. Critical next steps for the study of phytoplankton antioxidant systems are to (1) distinguish between oxidative stress and redox-based gene regulation and (2) determine how antioxidants influence variation or consistency in micronutrient quotas under various environmental conditions.

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Phytoplankton antioxidant systems and their contributions to cellular elemental stoichiometry

Abstract

Bibliographical note

ASJC Scopus Subject Areas

UN SDGs

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