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...

The Amur grape (Vitis amurensis Rupr.) thrives naturally in cool climates of Northeast Asia. Resistance against the introduced pathogen Plasmopara viticola is common among wild ecotypes that were propagated from Manchuria into Chinese vineyards or collected by Soviet botanists in Siberia, and used for the introgression of resistance into wine grapes (Vitis vinifera L.). A QTL analysis revealed ...

The plant phenol trans-resveratrol, which is mainly found in grape, displays a wide range of biological effects. A cell suspension culture was developed from calli of grape leaves of Vitis vinifera cv. Negramaro in order to study the bioproduction of resveratrol. The effects of a number of secondary plant metabolism elicitors, namely chitosan, methyl jasmonate, jasmonic acid, coronatine, and 12...

The initial concentration of anthocyanin and proanthocyanidin in wine affects the development SO 2 -resistant pigments, as well color non-color contributing polymeric fractions. However, effect extracted monomeric Pinot Noir ( Vitis vinifera L. cv.) grape anthocyanins with seed proanthocyanidins are poorly studied. In model ferments, reaction purified cv. noir extract were investigated at high ...

BACKGROUND Only a small amount of solar ultraviolet C (UV-C) radiation reaches the Earth's surface. This is because of the filtering effects of the stratospheric ozone layer. Artificial UV-C irradiation is used on leaves and fruits to stimulate different biological processes in plants. Grapes are a major fruit crop and are grown in many parts of the world. Research has shown that UV-C irradiati...

The role of root systems in drought tolerance is a subject of very limited information compared with above-ground responses. Adjustments to the ability of roots to supply water relative to shoot transpiration demand is proposed as a major means for woody perennial plants to tolerate drought, and is often expressed as changes in the ratios of leaf to root area (A(L):A(R)). Seasonal root prolifer...

El vino tinto variedad Vitis vinifera L. cv Tannat en los últimos años ha tomado relevancia por su alta concentración de polifenoles, esto le podría significar un rol protector sobre el genoma disminuyendo la formación lesiones oxidativas.