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Published (Version of record)CC BY V4.0, Open Access
Published (Version of record)CC BY V4.0, Open
Journal article
Emiliania huxleyi—Bacteria Interactions under Increasing CO2 Concentrations
Microorganisms (Basel), Vol.10(12), 2461
13/12/2022
PMID: 36557715
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Abstract
The interactions established between marine microbes, namely phytoplankton–bacteria, are key to the balance of organic matter export to depth and recycling in the surface ocean. Still, their role in the response of phytoplankton to rising CO2 concentrations is poorly understood. Here, we show that the response of the cosmopolitan Emiliania huxleyi (E. huxleyi) to increasing CO2 is affected by the coexistence with bacteria. Specifically, decreased growth rate of E. huxleyi at enhanced CO2 concentrations was amplified in the bloom phase (potentially also related to nutrient concentrations) and with the coexistence with Idiomarina abyssalis (I. abyssalis) and Brachybacterium sp. In addition, enhanced CO2 concentrations also affected E. huxleyi’s cellular content estimates, increasing organic and decreasing inorganic carbon, in the presence of I. abyssalis, but not Brachybacterium sp. At the same time, the bacterial isolates only survived in coexistence with E. huxleyi, but exclusively I. abyssalis at present CO2 concentrations. Bacterial species or group-specific responses to the projected CO2 rise, together with the concomitant effect on E. huxleyi, might impact the balance between the microbial loop and the export of organic matter, with consequences for atmospheric carbon dioxide.
Details
- Title
- Emiliania huxleyi—Bacteria Interactions under Increasing CO2 Concentrations
- Creators
- Joana Barcelos E Ramos - Universidade dos AçoresSusana Chaves Ribeiro - Universidade dos AçoresKai George Schulz - Southern Cross UniversityFrancisco José Riso Da Costa Coelho - CESAM-Centre for Environmental and Marine Studies, Department of Biology, University of Aveiro, 3810-193 Aveiro, PortugalVanessa Oliveira - CESAM-Centre for Environmental and Marine Studies, Department of Biology, University of Aveiro, 3810-193 Aveiro, PortugalAngela Cunha - CESAM-Centre for Environmental and Marine Studies, Department of Biology, University of Aveiro, 3810-193 Aveiro, PortugalNewton Carlos Marcial Gomes - CESAM-Centre for Environmental and Marine Studies, Department of Biology, University of Aveiro, 3810-193 Aveiro, PortugalColin Brownlee - Marine Biological Association of the United KingdomUta Passow - Ocean Science, Faculty of Sciences, Memorial University of Newfoundland, St. John's, NL A1C 5S7, CanadaEduardo Brito de Azevedo - Universidade dos Açores
- Publication Details
- Microorganisms (Basel), Vol.10(12), 2461
- Publisher
- MDPI
- Identifiers
- 991013075904202368
- Copyright
- © 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/ 4.0/).
- Academic Unit
- Centre for Coastal Biogeochemistry; Faculty of Science and Engineering; Science
- Language
- English
- Resource Type
- Journal article