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Crocosphaera watsoni
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SYSNO ASEP 0562828 Druh ASEP J - Článek v odborném periodiku Zařazení RIV O - Ostatní Poddruh J Článek ve WOS Název Crocosphaera watsoni Tvůrce(i) Masuda, Takako (MBU-M) ORCID
Inomura, K. (US)
Mareš, Jan (MBU-M) ORCID
Prášil, Ondřej (MBU-M) RID, ORCIDZdroj.dok. Trends in Microbiology. - : Elsevier - ISSN 0966-842X
Roč. 30, č. 8 (2022), s. 805-806Poč.str. 2 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova Crocosphaera watsonii ; cyanobacterium t ; photosynthesis Vědní obor RIV EE - Mikrobiologie, virologie Obor OECD Microbiology CEP GA20-17627S GA ČR - Grantová agentura ČR Způsob publikování Omezený přístup Institucionální podpora MBU-M - RVO:61388971 UT WOS 000830268500009 EID SCOPUS 85126849952 DOI 10.1016/j.tim.2022.02.006 Anotace Crocosphaera watsonii is a marine unicellular cyanobacterium that fixes carbon during the day and nitrogen during the night. They are abundant in tropical and subtropical oceans, providing both bioavailable carbon and nitrogen to the ecosystem, altering local and possibly global biogeochemical cycling. The temporal segregation of nitrogen fixation from oxygenic photosynthesis helps to protect nitrogenase, the oxygen-sensitive enzyme responsible for nitrogen fixation. The diel rhythm of carbon and nitrogen fixations fluctuates the cellular carbon to nitrogen ratio. Although C. watsonii can reduce nitrogen gas into organic compounds, they also compete with other cells for extracellular combined nitrogen, such as ammonium, nitrate, and urea. C. watsonii exists as single individual cells or as multiple cells bound by extracellular polymeric substances (EPS). Even under nitrogen-fixing conditions, only a fraction of the cellular population in colonies fixes nitrogen. This intercellular functional heterogeneity is predicted to lower overall energy consumption during nitrogen fixation. Their metabolic activities are highly sensitive to temperature, constraining their niche to warm waters. Pracoviště Mikrobiologický ústav Kontakt Eliška Spurná, eliska.spurna@biomed.cas.cz, Tel.: 241 062 231 Rok sběru 2023 Elektronická adresa https://www.sciencedirect.com/science/article/pii/S0966842X22000440?via%3Dihub
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