Was the Mitochondrion Necessary to Start Eukaryogenesis?
Jazyk angličtina Země Anglie, Velká Británie Médium print-electronic
Typ dokumentu časopisecké články, práce podpořená grantem, přehledy
PubMed
30466901
DOI
10.1016/j.tim.2018.10.005
PII: S0966-842X(18)30214-2
Knihovny.cz E-zdroje
- Klíčová slova
- eukaryogenesis, eukaryotic anaerobes, last eukaryotic common ancestor, mitochondrion, phagocytosis,
- MeSH
- adenosintrifosfát MeSH
- Archaea fyziologie MeSH
- biologická evoluce * MeSH
- Eukaryota genetika fyziologie MeSH
- eukaryotické buňky fyziologie MeSH
- fagocytóza MeSH
- genom MeSH
- mitochondrie genetika fyziologie MeSH
- prokaryotické buňky fyziologie MeSH
- symbióza MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- přehledy MeSH
- Názvy látek
- adenosintrifosfát MeSH
Arguments based on cell energetics favour the view that a mitochondrion capable of oxidative phosphorylation was a prerequisite for the evolution of other features of the eukaryotic cell, including increased volume, genome size and, eventually, phagotrophy. Contrary to this we argue that: (i) extant amitochondriate eukaryotes possess voluminous phagotrophic cells with large genomes; (ii) picoeukaryotes demonstrate that phagotrophy is feasible at prokaryotic cell sizes; and (iii) the assumption that evolution of complex features requires extra ATP, often mentioned in this context, is unfounded and should not be used in such considerations. We claim that the diversity of cell organisations and functions observed today in eukaryotes gives no reason to postulate that a mitochondrion must have preceded phagocytosis in eukaryogenesis.
Department of Parasitology Faculty of Science Charles University BIOCEV Vestec 252 50 Czech Republic
Department of Zoology Faculty of Science Charles University Prague 128 43 Czech Republic
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