Explaining the Origin of Three‐Membrane‐Bound Plastids in Dinoflagellates and Euglenophytes: Kleptoplastidy via Myzocytosis?

Moog, Daniel; Maier, Uwe G.

doi:10.1002/bies.201700224

Cited by 1 publication

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“…However, reconstructing the events giving rise to this state of things, is perilous. [ 45 ] In conclusion: many aspects of the mechanistic events leading to the uptake of future endosymbionts are still not completely understood, but there is an excellent chance that the first uptakes (especially that of the mitochondrion‐to‐be) followed a different path than later uptakes by fully evolved eukaryotes. There are a few reasons why a phagocytic uptake of the primal cyanobacterium (if this indeed was the method of entry) is more easily accepted.…”

Section: Further Observations On Endosymbiont Uptakesmentioning

confidence: 99%

Zombie ideas about early endosymbiosis: Which entry mechanisms gave us the “endo” in different endosymbionts?

Speijer

2021

BioEssays

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Recently, a review regarding the mechanics and evolution of mitochondrial fission appeared in Nature. Surprisingly, it stated authoritatively that the mitochondrial outer membrane, in contrast with the inner membrane of bacterial descent, was acquired from the host, presumably during uptake. However, it has been known for quite some time that this membrane was also derived from the Gram‐negative, alpha‐proteobacterium related precursor of present‐day mitochondria. The zombie idea of the host membrane still surrounding the endosymbiont is not only wrong, but more importantly, might hamper the proper conception of possible scenarios of eukaryogenesis. Why? Because it steers the imagination not only with regard to possible uptake mechanisms, but also regarding what went on before. Here I critically discuss both the evidence for the continuity of the bacterial outer membrane, the reasons for the persistence of the erroneous host membrane hypothesis and the wider implications of these misconceptions for the ideas regarding events occurring during the first steps towards the evolution of the eukaryotes and later major eukaryotic differentiations. I will also highlight some of the latest insights regarding different instances of endosymbiont evolution.

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Section: Further Observations On Endosymbiont Uptakesmentioning

confidence: 99%

Zombie ideas about early endosymbiosis: Which entry mechanisms gave us the “endo” in different endosymbionts?

Speijer

2021

BioEssays

View full text Add to dashboard Cite

show abstract

Explaining the Origin of Three‐Membrane‐Bound Plastids in Dinoflagellates and Euglenophytes: Kleptoplastidy via Myzocytosis?

Cited by 1 publication

References 10 publications

Zombie ideas about early endosymbiosis: Which entry mechanisms gave us the “endo” in different endosymbionts?

Zombie ideas about early endosymbiosis: Which entry mechanisms gave us the “endo” in different endosymbionts?

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