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Détermination des fonctions des protéines FtsZ dans la division et la biogenèse des plastes de plantes supérieures par la caractérisation des mutants FtsZ d'Arabidopsis thaliana.

Abstract : Chloroplast division in plant cells uses proteins from both the prokaryotic and eukaryotic ancestors. The prokaryotic derived proteins include FtsZ, the progenitor of tubilin. When bacteria only use one FtsZ protein to divide, chloroplasts in higher plants use two distinct FtsZ proteins: FtsZ1 and FtsZ2. The characterization of FtsZ Arabidopsis thaliana mutants shows that plant FtsZ proteins in addition to be involved in plastid division have gained new functions in plant development during evolution. The observation that association of plastid FtsZ with thylakoid membranes is developmentally regulated suggests a function of FtsZ proteins during leaf development in chloroplast biogenesis. The number and size of starch granules in mutants together with FtsZ expression during the proplastid-amyloplast transition suggest a function in starch granules metabolism.
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https://tel.archives-ouvertes.fr/tel-00708839
Contributor : Mohamed Karamoko <>
Submitted on : Friday, June 15, 2012 - 9:30:08 PM
Last modification on : Friday, November 6, 2020 - 4:12:15 AM
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  • HAL Id : tel-00708839, version 1
  • PRODINRA : 244999

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Mohamed Karamoko. Détermination des fonctions des protéines FtsZ dans la division et la biogenèse des plastes de plantes supérieures par la caractérisation des mutants FtsZ d'Arabidopsis thaliana.. Biologie végétale. Université de Grenoble, 2008. Français. ⟨tel-00708839⟩

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