The balance between photosynthesis and respiration explains the niche differentiation between Crocosphaera and Cyanothece

0567744 - MBÚ 2024 RIV NL eng J - Journal Article
Masuda, Takako - Inomura, K. - Gao, M. - Armin, G. - Kotabová, Eva - Bernát, Gábor - Lawrenz-Kendrick, Evelyn - Lukeš, Martin - Bečková, Martina - Steinbach, Gabor - Komenda, Josef - Prášil, Ondřej
The balance between photosynthesis and respiration explains the niche differentiation between Crocosphaera and Cyanothece.
Computational and Structural Biotechnology Journal. Roč. 21, January 23 (2023), s. 58-65. ISSN 2001-0370. E-ISSN 2001-0370
R&D Projects: GA ČR(CZ) GA20-17627S; GA ČR(CZ) GX19-29225X
Institutional support: RVO:61388971
Keywords : ucyn-b * ucyn-c * Niche separation * Carbon consumption
OECD category: Microbiology
Impact factor: 6, year: 2022
Method of publishing: Open access
https://www.sciencedirect.com/science/article/pii/S2001037022005256?via%3Dihub

Crocosphaera and Cyanothece are both unicellular, nitrogen-fixing cyanobacteria that prefer different environments. Whereas Crocosphaera mainly lives in nutrient-deplete, open oceans, Cyanothece is more common in coastal, nutrient-rich regions. Despite their physiological similarities, the factors separating their niches remain elusive. Here we performed physiological experiments on clone cultures and expand upon a simple ecological model to show that their different niches can be sufficiently explained by the observed differences in their photosynthetic capacities and rates of carbon (C) consumption. Our exper-iments revealed that Cyanothece has overall higher photosynthesis and respiration rates than Crocosphaera. A simple growth model of these microorganisms suggests that C storage and consumption are previously under-appreciated factors when evaluating the occupation of niches by different marine nitrogen fixers.(c) 2022 The Authors. Published by Elsevier B.V. on behalf of Research Network of Computational and Structural Biotechnology. This is an open access article under the CC BY license (http://creativecommons. org/licenses/by/4.0/).
Permanent Link: https://hdl.handle.net/11104/0342540