Non-tumorigenic Rhizobium (syn. Agrobacterium) vitis strain ARK-1 (ARK-1) has been shown to reduce crown gall in grapevine (Vitis vinifera) seedlings when co-inoculated with Japanese tumorigenic isolates of R. vitis. The objectives this study were test ARK-1's efficacy as a biological control agent against isolated from grapevines Virginia, and examine genetic diversity found USA Japan. was int...

Among the food plants, the presence of melatonin in grapes (Vitis vinifera L.) deserves particular attention because of the production of wine, an alcoholic beverage of economic relevance and with putative healthy effects. Furthermore, melatonin isomers have been detected in wine too. Recently, one of these isomers has been identified as tryptophan-ethylester, a compound with the same molecular...

Since the publication of "Application Guideline for Western Traditional Herbal Medicines as OTC Drugs" in 2007, only two European ethnopharmaceuticals, Vitis vinifera L., folium extract (Antistax) and Vitex agnus-castus L., fructus extract (Prefemin), have been approved as OTC drugs in Japan. In this review, we describe the current regulation of Western ethnopharmaceuticals in Japan, summarize ...

A novel virus-like sequence from grapevine was identified by Illumina sequencing. The genomic organization was most similar to that of members of the genus Fabavirus Polyproteins RNA-1 and RNA-2 of the virus tentatively named grapevine fabavirus (GFabV) shared 34 to 23% sequence identities with Broad bean wilt virus 2 (BBWV2), respectively. GFabV was successfully graft transmitted to Vitis vini...

Sucrose (0.04 to 0.12 m) induces accumulation of both total phenolics and anthocyanin in leaf discs of grapevine (Vitis vinifera L.) incubated in intermittent light. Abscisic acid (20 muM) and 2-chloroethyl phosphonic acid (60 mum) act synergistically with the sucrose to enhance its induction of both total phenolics and anthocyanin. The magnitude of this interaction depends on leaf age. Nitrate...

Resveratrol synthesis from p-coumarate was analyzed in different Saccharomyces cerevisiae strains expressing the 4-coumaroyl-coenzyme A ligase (4CL1) from Arabidopsis thaliana and the stilbene synthase (STS) from Vitis vinifera and compared between yeast cultures growing in rich or synthetic medium. The use of rich medium considerably improved resveratrol production, and resveratrol yields of u...

Pollen germination of Vitis vinifera L., of the family Vitaceae was examined in fresh and stored pollen upto 48 weeks at different temperature i.e., refrigerator (+4C), freezer (-20C, -30C) and freeze drier (-60C). Pollen stored at low temperature showed better germination percentage as compared to pollen stored at +4C and fresh. Freeze dried pollen (-60C) showed the highest germination percent...

S. Afr. J. Enol. Vitic., Vol. 35, No. 2, 2014 *Corresponding author: [email protected] [Tel./fax: +86 10 62737553] Acknowledgements: This work was financially supported by the Natural Science Foundation of China (No. 31171786), the Special Fund for Agro-scientific Research in the Public Interest (No. 201303076-03) and the China Agriculture Research System (CARS-30) Separation and Purification of ...

Appearance of a lag period dependent on pH in the expression of the catecholase activity of a polyphenoloxidase extracted in a latent state from Airen grape (Vitis vinifera L.) berries, is revealed, suggesting the hysteretic nature of the enzyme. The lag time was independent of enzyme concentration, indicating that slow pH-induced conformational changes in the protein must occur during assay. R...

A família Vitaceae é constituída por cerca de 15 gêneros e 850 espécies. Ocorre tanto em regiões temperadas como tropicais. Sendo conhecida ter o gênero introduzido cultivado no Brasil para a produção vinho, sucos frutas, podendo citar-se espécie V. Vinifera L. nesses usos. Vitis vinífera, nosso objeto estudo, forma comum uva, empregada na medica popular diferentes doenças cardiovasculares, pos...