Vignette d'image

Eugeni Piller, Lucia

Nom
Eugeni Piller, Lucia
Affiliation principale
Identifiants
https://libra.unine.ch/handle/123456789/322

Résultat de la recherche

Filtres

1
11
1
1
Réinitialiser les filtres

Paramètres

Voici les éléments 1 - 1 sur 1
  • Publication
    Accès libre
    Chloroplast lipid droplet type II NAD(P)H quinone oxidoreductase is essential for prenylquinone metabolism and vitamin K(1) accumulation
    Eugeni Piller, Lucia 
    ;
    Besagni, Céline
    ;
    Ksas, Brigitte
    ;
    Rumeau, Dominique
    ;
    Bréhélin, Claire
    ;
    Glauser, Gaétan
    ;
    Kessler, Félix 
    ;
    Havaux, Michel
    Lipid droplets are ubiquitous cellular structures in eukaryotes and are required for lipid metabolism. Little is currently known about plant lipid droplets other than oil bodies. Here, we define dual roles for chloroplast lipid droplets (plastoglobules) in energy and prenylquinone metabolism. The prenylquinones—plastoquinone, plastochromanol-8, phylloquinone (vitamin K(1)), and tocopherol (vitamin E)—are partly stored in plastoglobules. This work shows that NAD(P)H dehydrogenase C1 (NDC1) (At5g08740), a type II NAD(P)H quinone oxidoreductase, associates with plastoglobules. NDC1 reduces a plastoquinone analog in vitro and affects the overall redox state of the total plastoquinone pool in vivo by reducing the plastoquinone reservoir of plastoglobules. Finally, NDC1 is required for normal plastochromanol-8 accumulation and is essential for vitamin K(1) production.