2015
DOI: 10.1016/j.pbi.2015.05.005
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Unexpected roles of plastoglobules (plastid lipid droplets) in vitamin K 1 and E metabolism

Abstract: Tocopherol (vitamin E) and phylloquinone (vitamin K 1 ) are lipid-soluble antioxidants that can only be synthesized by photosynthetic organisms. These compounds function primarily at the thylakoid membrane but are also present in chloroplast lipid droplets, also known as plastoglobules (PG). Depending on environmental conditions and stage of plant development, changes in the content, number and size of PG occur. PG are directly connected to the thylakoid membrane via the outer lipid leaflet. Apart from storage… Show more

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Cited by 34 publications
(26 citation statements)
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“…Vitamin E (tocopherol) is an antioxidant that accumulates in the LDs of plant chloroplasts and cyanobacteria [58, 59]. It is also present in the LDs of human adipocytes [60], although the functions of tocopherol storage here are not yet clear.…”
Section: 12 Storage Of Vitamins and Signaling Precursorsmentioning
confidence: 99%
“…Vitamin E (tocopherol) is an antioxidant that accumulates in the LDs of plant chloroplasts and cyanobacteria [58, 59]. It is also present in the LDs of human adipocytes [60], although the functions of tocopherol storage here are not yet clear.…”
Section: 12 Storage Of Vitamins and Signaling Precursorsmentioning
confidence: 99%
“…PG were first thought only to be lipid storage sites. But a series of studies revealed that PG actively participate in lipid synthesis and repair (Eugeni Piller et al, 2012; Rottet et al, 2015; Spicher and Kessler, 2015). It was shown that PG contain enzymes such as tocopherol cyclase (VTE1), NAD(P)H dehydrogenase C1 (NDC1), and phytyl ester synthase (PES), as well as others (Zbierzak et al, 2010; Eugeni Piller et al, 2011, 2014; Lippold et al, 2012).…”
Section: Introductionmentioning
confidence: 99%
“…В одношаровій ліпідній оболонці пластоглобул наявні ліпідні компоненти тилакоїдних мембран, тоді як у їхньому ядрі знайдено структурні білки і ферменти. Із пластоглобулами асоціюють цілу низку жиророзчинних речовин [24]. Утворення значної кількості пластоглобул протягом осінньої вегетації може бути пов'язане зі старінням вай P. aculeatum.…”
Section: результати дослідження і їхнє обговоренняunclassified