Short-term acidification promotes diverse iron acquisition and conservation mechanisms in upwelling-associated phytoplankton.

Autor: Lampe RH; Integrative Oceanography Division, Scripps Institution of Oceanography, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093, USA.; Microbial and Environmental Genomics, J. Craig Venter Institute, 4120 Capricorn Lane, La Jolla, CA, 92037, USA., Coale TH; Integrative Oceanography Division, Scripps Institution of Oceanography, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093, USA.; Microbial and Environmental Genomics, J. Craig Venter Institute, 4120 Capricorn Lane, La Jolla, CA, 92037, USA., Forsch KO; Geosciences Research Division, Scripps Institution of Oceanography, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093, USA., Jabre LJ; Department of Biology and Institute for Comparative Genomics, Dalhousie University, 1355 Oxford St, Halifax, NS, B3H 4R2, Canada., Kekuewa S; Geosciences Research Division, Scripps Institution of Oceanography, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093, USA., Bertrand EM; Department of Biology and Institute for Comparative Genomics, Dalhousie University, 1355 Oxford St, Halifax, NS, B3H 4R2, Canada., Horák A; Biology Centre, Institute of Parasitology, Czech Academy of Sciences, 370 05, České Budějovice, CZ, Czechia.; Faculty of Science, University of South Bohemia, 370 05, České Budějovice, CZ, Czechia., Oborník M; Biology Centre, Institute of Parasitology, Czech Academy of Sciences, 370 05, České Budějovice, CZ, Czechia.; Faculty of Science, University of South Bohemia, 370 05, České Budějovice, CZ, Czechia., Rabines AJ; Integrative Oceanography Division, Scripps Institution of Oceanography, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093, USA.; Microbial and Environmental Genomics, J. Craig Venter Institute, 4120 Capricorn Lane, La Jolla, CA, 92037, USA., Rowland E; Department of Biology and Institute for Comparative Genomics, Dalhousie University, 1355 Oxford St, Halifax, NS, B3H 4R2, Canada., Zheng H; Microbial and Environmental Genomics, J. Craig Venter Institute, 4120 Capricorn Lane, La Jolla, CA, 92037, USA., Andersson AJ; Geosciences Research Division, Scripps Institution of Oceanography, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093, USA., Barbeau KA; Geosciences Research Division, Scripps Institution of Oceanography, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093, USA., Allen AE; Integrative Oceanography Division, Scripps Institution of Oceanography, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093, USA. aallen@jcvi.org.; Microbial and Environmental Genomics, J. Craig Venter Institute, 4120 Capricorn Lane, La Jolla, CA, 92037, USA. aallen@jcvi.org.
Jazyk: angličtina
Zdroj: Nature communications [Nat Commun] 2023 Nov 08; Vol. 14 (1), pp. 7215. Date of Electronic Publication: 2023 Nov 08.
DOI: 10.1038/s41467-023-42949-1
Abstrakt: Coastal upwelling regions are among the most productive marine ecosystems but may be threatened by amplified ocean acidification. Increased acidification is hypothesized to reduce iron bioavailability for phytoplankton thereby expanding iron limitation and impacting primary production. Here we show from community to molecular levels that phytoplankton in an upwelling region respond to short-term acidification exposure with iron uptake pathways and strategies that reduce cellular iron demand. A combined physiological and multi-omics approach was applied to trace metal clean incubations that introduced 1200 ppm CO 2 for up to four days . Although variable, molecular-level responses indicate a prioritization of iron uptake pathways that are less hindered by acidification and reductions in iron utilization. Growth, nutrient uptake, and community compositions remained largely unaffected suggesting that these mechanisms may confer short-term resistance to acidification; however, we speculate that cellular iron demand is only temporarily satisfied, and longer-term acidification exposure without increased iron inputs may result in increased iron stress.
(© 2023. The Author(s).)
Databáze: MEDLINE
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