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• W4296323151 abstract "Anthocyanins are a group of pigments that have various roles in plants including attracting pollinators and seed dispersers and protecting against various types of stress. In vegetative tissue, these anthocyanins are sequestered in the vacuole following biosynthesis in the cytoplasm, though there remain questions as to the events leading to the vacuolar sequestration. In this study, we were able to show that the uptake of acylated anthocyanins by vacuolar membrane-enriched vesicles isolated from Arabidopsis was stimulated by the addition of MgATP and was inhibited by both vanadate and glybenclamide, but not by gramicidin D or bafilomycin A1 , suggesting that uptake involves an ATP-binding cassette (ABC) transporter and not an H+ -antiporter. Membrane vesicles isolated from yeast expressing the ABC transporters designated AtABCC1, AtABCC2, and AtABCC14 are capable of MgATP-dependent uptake of acylated anthocyanins. This uptake was not dependent on glutathione as seen previously for anthocyanidin 3-O-monoglucosides. Compared to the wild-type, the transport of acylated anthocyanins was lower in vacuolar membrane-enriched vesicles isolated from atabcc1 cell cultures providing evidence that AtABCC1 may be the predominant transporter of these compounds in vivo. In addition, the pattern of anthocyanin accumulation differed between the atabcc1, atabcc2, and atabcc14 mutants and the wild-type seedlings under anthocyanin inductive conditions. We suggest that AtABCC1, AtABCC2, and AtABCC14 are involved in the vacuolar transport of acylated anthocyanins produced in the vegetative tissue of Arabidopsis and that the pattern of anthocyanin accumulation can be altered depending on the presence or absence of a specific vacuolar ABC transporter." @default.
• W4296323151 created "2022-09-20" @default.
• W4296323151 creator A5039886412 @default.
• W4296323151 creator A5053117156 @default.
• W4296323151 creator A5073941540 @default.
• W4296323151 date "2022-09-01" @default.
• W4296323151 modified "2023-10-07" @default.
• W4296323151 title "Transport of acylated anthocyanins by the Arabidopsis <scp>ATP‐binding</scp> cassette transporters <scp>AtABCC1</scp>, <scp>AtABCC2</scp>, and <scp>AtABCC14</scp>" @default.
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• W4296323151 doi "https://doi.org/10.1111/ppl.13780" @default.
• W4296323151 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/36121340" @default.
• W4296323151 hasPublicationYear "2022" @default.
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