Grapevine MATE-Type Proteins Act as Vacuolar H+-Dependent Acylated Anthocyanin Transporters |
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| Authors: | Camila Gomez Nancy Terrier Laurent Torregrosa Sandrine Vialet Alexandre Fournier-Level Clotilde Verris Jean-Marc Souquet Jean-Paul Mazauric Markus Klein Vronique Cheynier and Agns Ageorges |
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| Institution: | Camila Gomez, Nancy Terrier, Laurent Torregrosa, Sandrine Vialet, Alexandre Fournier-Level, Clotilde Verriès, Jean-Marc Souquet, Jean-Paul Mazauric, Markus Klein, Véronique Cheynier, and Agnès Ageorges |
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| Abstract: | In grapevine (Vitis vinifera), anthocyanins are responsible for most of the red, blue, and purple pigmentation found in the skin of berries. In cells, anthocyanins are synthesized in the cytoplasm and accumulated into the vacuole. However, little is known about the transport of these compounds through the tonoplast. Recently, the sequencing of the grapevine genome allowed us to identify genes encoding proteins with high sequence similarity to the Multidrug And Toxic Extrusion (MATE) family. Among them, we selected two genes as anthocyanin transporter candidates and named them anthoMATE1 (AM1) and AM3. The expression of both genes was mainly fruit specific and concomitant with the accumulation of anthocyanin pigment. Subcellular localization assays in grapevine hairy roots stably transformed with AM1 | |
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