For faster navigation, this Iframe is preloading the Wikiwand page for Eobacteria.

Eobacteria

Les eobacteria sont un taxon de bactéries proposé par Cavalier-Smith[1] afin de regrouper les chlorobacteria et les hadobacteria. Les éobactéries comprennent des bactéries gram-négatives, c'est-à-dire dont l'enveloppe cellulaire est composée d'une membrane cytoplasmique, d'une paroi cellulaire de glycoprotéine et membrane externe, mais contrairement aux glycobactéries, la membrane externe ne contient pas de molécules complexes de lipopolysaccharides[2] et ne contient que des phospholipides simples[1].

Selon Cavalier-Smith, ce groupe d'organismes serait le plus primitif, apparu il y a 3,5 milliards d'années et pratiquant déjà à l'époque la photosynthèse anoxygénique, tout comme les chlorobactéries aujourd'hui.

Notes et références

[modifier | modifier le code]
  1. a et b Cavalier-Smith T, « Rooting the tree of life by transition analyses », Biol. Direct, vol. 1, no 1,‎ , p. 19 (PMID 16834776, PMCID 1586193, DOI 10.1186/1745-6150-1-19, lire en ligne)
  2. Cavalier-Smith T, « Deep phylogeny, ancestral groups and the four ages of life », Philos. Trans. R. Soc. Lond. B Biol. Sci., vol. 365, no 1537,‎ , p. 111–32 (PMID 20008390, PMCID 2842702, DOI 10.1098/rstb.2009.0161)

Voyez-vous aussi

[modifier | modifier le code]
{{bottomLinkPreText}} {{bottomLinkText}}
Eobacteria
Listen to this article

This browser is not supported by Wikiwand :(
Wikiwand requires a browser with modern capabilities in order to provide you with the best reading experience.
Please download and use one of the following browsers:

This article was just edited, click to reload
This article has been deleted on Wikipedia (Why?)

Back to homepage

Please click Add in the dialog above
Please click Allow in the top-left corner,
then click Install Now in the dialog
Please click Open in the download dialog,
then click Install
Please click the "Downloads" icon in the Safari toolbar, open the first download in the list,
then click Install
{{::$root.activation.text}}

Install Wikiwand

Install on Chrome Install on Firefox
Don't forget to rate us

Tell your friends about Wikiwand!

Gmail Facebook Twitter Link

Enjoying Wikiwand?

Tell your friends and spread the love:
Share on Gmail Share on Facebook Share on Twitter Share on Buffer

Our magic isn't perfect

You can help our automatic cover photo selection by reporting an unsuitable photo.

This photo is visually disturbing This photo is not a good choice

Thank you for helping!


Your input will affect cover photo selection, along with input from other users.

X

Get ready for Wikiwand 2.0 🎉! the new version arrives on September 1st! Don't want to wait?