Počet záznamů: 1
Resource allocation in Chlamydomonas reinhardtii exposed to sulphur starvation and anaerobiosis
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SYSNO ASEP 0549293 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Resource allocation in Chlamydomonas reinhardtii exposed to sulphur starvation and anaerobiosis Tvůrce(i) Pessina, A. (IT)
Fanesi, A. (IT)
Rocchetti, L. (IT)
Beolchini, F. (IT)
Giordano, Mario (MBU-M) ORCIDZdroj.dok. Phycologia. - : Taylor & Francis - ISSN 0031-8884
Roč. 60, č. 5 (2021), s. 473-486Poč.str. 14 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova Carbon allocation ; Elemental composition ; Fourier Transform Infrared Spectroscopy (FTIR) ; Microalgae Vědní obor RIV EF - Botanika Obor OECD Plant sciences, botany Způsob publikování Omezený přístup Institucionální podpora MBU-M - RVO:61388971 UT WOS 000693511200001 EID SCOPUS 85114514113 DOI 10.1080/00318884.2021.1959752 Anotace When environmental conditions change, microalgae can modulate the size of their macromolecular pools and their elemental composition in order to accommodate their nutritional and energetic demands. In this context, we evaluated how O-2 levels and S starvation alter the resource partitioning in terms of organic and elemental composition in Chlamydomonas reinhardtii. The analysis of gene transcription, photosynthetic energy production and organic pool allocation allowed us to identify a two-phase cellular response related to external O-2 concentration: (1) a short-term response where S starvation induced the expression of S starvation genes immediately after the start of the perturbation, (2) a long-term response that consisted of a drastic reduction of photosynthetic energy production and changes in C allocation following S deprivation, which was related to oxygen conditions. In anaerobic conditions, S starvation did not affect the pools of carbohydrates and lipids, whereas the protein pool decreased slightly over time. On the other hand, in aerobic conditions, S starvation modulated all organic pools: carbohydrates, lipids and proteins. We conclude that the energy levels produced by fermentation metabolism are not sufficient to sustain the acclimation process in C. reinhardtii, moreover, S availability affects C. reinhardtii more than do oxygen levels. Pracoviště Mikrobiologický ústav Kontakt Eliška Spurná, eliska.spurna@biomed.cas.cz, Tel.: 241 062 231 Rok sběru 2022 Elektronická adresa https://www.tandfonline.com/doi/full/10.1080/00318884.2021.1959752
Počet záznamů: 1