Home »
» Interesting paper on evolution, chloroplasts, mitochondria, virus reproduction, evolution of the eukaryotic cell, Elsevier Journal of Theoretical Biology Volume 67, Issue 2, 21 July 1977, Pages 287-297; Journal of Theoretical Biology Participation of chloroplasts and mitochondria in virus reproduction and the evolution of the eukaryotic cell ; S.A.Ostroumov, https://doi.org/10.1016/0022-5193(77)90201-6; https://5bio5.blogspot.com/2018/08/i.html
Interesting paper on evolution,chloroplasts, mitochondria, virus reproduction, evolution of the eukaryotic cell,
Participation of chloroplasts and mitochondria in virus reproduction and the evolution of the eukaryotic cell
Abstract
The similarity of prokaryotic cells and the organelles of eukaryotes can be explained not only by the ordinary form of the endosymbiosis hypothesis, but also by another evolutionary model presented here. This model postulates that portions of DNA of an ancient prokaryote were transferred into the nucleus of the ancient eukaryote cell. In combination with prokaryotic DNA-encoded proteins and phospholipid membranes prokaryotic DNA may have given rise to a structure resembling a promitochondrion or a proplastid. The transfer of genetic material into the nucleus or the cytoplasm could have occurred via a virus-mediatich. This suggestion is in accordance with the reported association of chloroplasts and plant mitochondria with replication of some strains of tobacco mosaic virus, cucumber green mottle mosaic virus, barley stripe virus and tobacco rattle virus and with findings of virus-like particles in mammalian and reptilian cells as well as cells of Neurospora crassa.
The terms “mitophages” and “plastophages” (“chlorophages”) are introduced to designate the viruses associated with mitochondria or plastids (chloroplasts) during some phase of development. Participation of virus-mediated DNA transfers can be suggested for endosymbiotic organellar origin also.
Copyright © 1977 Published by Elsevier Ltd.
**
