title: Resveratrol synthesis under natural conditions and after UV-C irradiation in berry skin is associated with berry development stages in 'Beihong' (V. vinifera×V. amurensis).
abstract: Though UV-C irradiation may induce the synthesis of resveratrol in grape berry skins, it is unclear which developmental stage is most sensitive to UV-C induction. In this study, we investigated resveratrol content and gene expression of 'Beihong' (Vitisvinifera×Vitisamurensis) berries by UV-C irradiation compared with under natural conditions during different developmental stages. Under natural condition, resveratrol synthesis was related to veraison. Before veraison, resveratrol content was very low; however, total resveratrol increased about 500% from veraison to maturity in the main forms of piceids. UV-C irradiation significantly stimulated resveratrol synthesis, mainly in the form of trans-resveratrol. Young berries at 55days after anthesis were most sensitive to UV-C irradiation, the total resveratrol in the skin of UV-C irradiated berry is about 90 times higher than that of the control; however, resveratrol synthesis subsequently declined, which may be attributed to STS regulation by Myb14.
authors.affiliation: Key Laboratory of Plant Resources and Beijing Key Laboratory of Grape Science and Enology, Institute of Botany, The Chinese Academy of Sciences, Beijing 100093, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China.
authors.forename: Jun-Fang
authors.initials: JF
authors.lastname: Wang
authors.affiliation: Key Laboratory of Plant Resources and Beijing Key Laboratory of Grape Science and Enology, Institute of Botany, The Chinese Academy of Sciences, Beijing 100093, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China.
authors.forename: Ling
authors.initials: L
authors.lastname: Ma
authors.affiliation: Key Laboratory of Plant Resources and Beijing Key Laboratory of Grape Science and Enology, Institute of Botany, The Chinese Academy of Sciences, Beijing 100093, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China.
authors.forename: Hui-Fen
authors.initials: HF
authors.lastname: Xi
authors.affiliation: Key Laboratory of Plant Resources and Beijing Key Laboratory of Grape Science and Enology, Institute of Botany, The Chinese Academy of Sciences, Beijing 100093, PR China. Electronic address: ljwang@ibcas.ac.cn.
authors.forename: Li-Jun
authors.initials: LJ
authors.lastname: Wang
authors.affiliation: Key Laboratory of Plant Resources and Beijing Key Laboratory of Grape Science and Enology, Institute of Botany, The Chinese Academy of Sciences, Beijing 100093, PR China; Key Laboratory of Plant Germplasm Enhancement and Speciality Agriculture, Wuhan Botanical Garden, The Chinese Academy of Sciences, Wuhan 430074, PR China. Electronic address: shhli@ibcas.ac.cn.
authors.forename: Shao-Hua
authors.initials: SH
authors.lastname: Li
mesh_terms: D000217:Acyltransferases / Q000235:genetics; D015870:Gene Expression; D000077185:Resveratrol; D013267:Stilbenes / Q000032:analysis / Q000378:metabolism*; D014466:Ultraviolet Rays; D027843:Vitis / Q000254:growth & development / Q000378:metabolism* / Q000528:radiation effects
chemical_list: D013267:Stilbenes; D000217:Acyltransferases; C022674:stilbene synthase; D000077185:Resveratrol
keywords: Development; Grape berry; Resveratrol; Stilbene synthesis; UV-C