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A mechanism implicating plastoglobules in thylakoid disassembly during senescence and nitrogen starvation

2013, Besagni, Celine, Kessler, Félix

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Plastid lipid droplets at the crossroads of prenylquinone metabolism

2012, Eugeni Piller, Lucia, Abraham, Marion, Dörmann, Peter, Kessler, Félix, Besagni, Celine

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Dual targeting of a mature plastoglobulin/fibrillin fusion protein to chloroplast plastoglobules and thylakoids in transplastomic tobacco plants

2013, Shanmugabalaji, Venkatasalam, Besagni, Celine, Eugeni Piller, Lucia, Douet, Véronique, Ruf, Stephanie, Bock, Ralph, Kessler, Félix

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Chloroplast lipid droplet type II NAD(P)H quinone oxidoreductase is essential for prenylquinone metabolism and vitamin K1 accumulation

2011, Eugeni Piller, Lucia, Besagni, Celine, Ksas, Brigitte, Rumeau, Dominique, Bréhélin, Claire, Glauser, Gaëtan, 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 K1), 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 K1 production.

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Fatty acid phytyl ester synthesis in chloroplasts of Arabidopsis

2012, Lippold, Felix, vom Dorp, Katharina, Abraham, Marion, Hölzl, Georg, Wewer, Vera, Yilmaz, Jenny Lindberg, Lager, Ida, Montandon, Cyrille, Besagni, Celine, Kessler, Félix