The ripening of grape (Vitis vinifera L.) is characterized by massive sugar import into the berries. The events triggering this process and the pathways of assimilate transport are still poorly known. A genomic clone Vvht1 (Vitis vinifera hexose transporter1) and the corresponding cDNA encoding a hexose transporter whose expression is induced during berry ripening have been isolated. Vvht1 is e...

introduction: many reports have shown that the grape (vitis vinifera) seed extract induces antioxidant, hypotensive hypolipidemic, and vasodilatory effects. we have recently shown the relaxatory effect of grape leaf extract on rat's aorta, ileum, uterus and frog's heart rate and contractility. the objective of this study was to investigate the spasmolytic effect of vitis vinifera leaf hydroalco...

Although potato leafhopper, Empoasca fabae (Harris) (Hemiptera: Cicadellidae), is highly polyphagous, classic host studies do not recognize grapevines (Vitis spp.), as suitable hosts. Recently, injury has been reported and reproduction documented within grape vineyards, suggesting a host expansion for the leafhopper. To document this apparent expansion in host use, we determined whether grape p...

Bu çalışmada, Merzifon Karası üzüm çeşidinin (Vitis vinifera L.) fenolik madde, flavonoid ve antioksidan aktivitesinin belirlenmesi amaçlanmıştır. üzümün oda sıcaklığındaki meyvenin tamamı ile kabuk kısmı 50 °C’ de tamamından elde edilen ekstraklardaki aktivite, toplam madde miktarı incelenmiştir. Antioksidan aktivite DPPH (2.2-difenil1- pikrilhidrazil) yöntemiyle ölçülmüştür. En yüksek tespit ...

Wild grapevine genetic diversity in southeast Turkey has not been documented to date. In the present work, in order to clarify the relationships between wild and cultivated grape accessions from southeastern Turkey, 22 nuclear and three chloroplast microsatellite loci were used on 21 wild grapevine Vitis vinifera L. ssp. sylvestris (Gmelin) and 13 cultivated grapevine Vitis vinifera ssp. sativa...

Koshu is a grape cultivar native to Japan and is one of the country's most important cultivars for wine making. Koshu and other oriental grape cultivars are widely believed to belong to the European domesticated grape species Vitis vinifera. To verify the domesticated origin of Koshu and four other cultivars widely grown in China and Japan, we genotyped 48 ancestry informative single nucleotide...