ANCIENT INVASIONS FROM ENDOSYMBIONTS TO ORGANELLES PDF

This page has been archived and is no longer updated. What variety is there in mitochondria? Mitochondria occur in various forms across various eukaryotic groups, yet considerations on the origin of mitochondria sometimes neglect this understanding. Four main mitochondrial types can be distinguished on the basis of functional criteria concerning how or whether ATP is produced. These functional types do not correspond to natural groups, because they occur in an interleaved manner across the tree of eukaryotic life. Instead they correspond to ecological specializations.

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The acquisitions of mitochondria and plastids were important events in the evolution of the eukaryotic cell, supplying it with compartmentalized bioenergetic and biosynthetic factories.

Ancient invasions by eubacteria through symbiosis more than a billion years ago initiated these processes. Advances in geochemistry, molecular phylogeny, and cell biology have offered insight into complex molecular events that drove the evolution of endosymbionts into contemporary organelles.

In losing their autonomy, endosymbionts lost the bulk of their genomes, necessitating the evolution of elaborate mechanisms for organelle biogenesis and metabolite exchange. In the process, symbionts acquired many host-derived properties, lost much of their eubacterial identity, and were transformed into extraordinarily diverse organelles that reveal complex histories that we are only beginning to decipher. This site needs JavaScript to work properly. Please enable it to take advantage of the complete set of features!

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Optional text in email:. Save Cancel. Create a file for external citation management software Create file Cancel. Full-text links Cite Favorites. Abstract The acquisitions of mitochondria and plastids were important events in the evolution of the eukaryotic cell, supplying it with compartmentalized bioenergetic and biosynthetic factories.

Similar articles How do endosymbionts become organelles? Understanding early events in plastid evolution. Bhattacharya D, et al. PMID: The endosymbiotic origin of organelles: an ancient process still very much in fashion. Vothknecht UC, Soll J. Vothknecht UC, et al. Biol Chem. PMID: No abstract available. The intracellular cyanobacteria of Paulinella chromatophora: endosymbionts or organelles? Trends Microbiol. Epub May Reconstructing evolution: gene transfer from plastids to the nucleus.

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Ancient Invasions: From Endosymbionts to Organelles

The acquisitions of mitochondria and plastids were important events in the evolution of the eukaryotic cell, supplying it with compartmentalized bioenergetic and biosynthetic factories. Ancient invasions by eubacteria through symbiosis more than a billion years ago initiated these processes. Advances in geochemistry, molecular phylogeny, and cell biology have offered insight into complex molecular events that drove the evolution of endosymbionts into contemporary organelles. In losing their autonomy, endosymbionts lost the bulk of their genomes, necessitating the evolution of elaborate mechanisms for organelle biogenesis and metabolite exchange.

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We'd like to understand how you use our websites in order to improve them. Register your interest. In , the Russian biologist C. Mereschkowsky postulated that plastids e.

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