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The influence of restricting available carbohydrates (CHOs) on shoot growth was studied by cane girdling field grown Vitis vinifera L. Sauvignon Blanc grapevines before budbreak. Canes were girdled 5, 10 or 20cm from the terminal bud of the cane, and the shoot growth of the terminal bud was
In Vitis vinifera L, photosynthesis and photosynthate partitioning are affected in the presence of fludioxonil and pyrimethanil, two fungicides commonly used in vineyards against Botrytis cinerea Pers. However, the effects were found to be different according to the model studied: plantlets (cv
The impact of flumioxazin herbicide on in vitro-grown grapevine ( Vitis vinifera L. cv. Chardonnay) was investigated. The herbicide treatments (1, 10 or 100 micro M flumioxazin in MM medium) had a negative impact on photosynthesis, as revealed by a reduction in foliar chlorophyll and carotenoid
In the Champagne vineyard, most of the areas treated in early 2000 with the newly approved herbicide flazasulfuron had vines with altered growth and yellow leaves throughout the growing season. In order to clarify the physiological perturbations caused on the non-target grapevine and their potential
To assess the robustness of the apparent sugar-potassium relationship during ripening of grape berries, a controlled-environment study was conducted on Shiraz vines involving ambient and reduced (by 34%) atmospheric CO2 concentrations, and standard and increased (by 67%) soil potassium applications
Changes in carbohydrate metabolism during grape berry development play a central role in shaping the final composition of the fruit. The present work aimed to identify metabolic switches during grape development and to provide insights into the timing of developmental regulation of carbohydrate
Two bacterial strains (B18BM42(T) and B18NM6) were recovered during a study of bacterial diversity on wine grapes (Vitis vinifera L.) from the Nemea region in Greece. Phylogenetic analysis based on 16S rRNA gene sequences placed the two strains within the genus Weissella, and found them to be most
We have previously reported that sucrose modulates anthocyanin biosynthesis in cell suspension cultures of Vitis vinifera L. The main role of sugar in this response does not seem to be that of general carbohydrate source for the supply of energy. In the present work, a number of pharmacological
Vitis vinifera cell suspension cultures carried out in shake flasks were closely examined for biomass growth and cell division in relation to carbohydrate, NH(4), NO(3)PO(4), and dissolved oxygen (DO)consumption. After inoculation, the oxygen uptake rate of the cultures measured on-tine was observed
Microarray analysis of genes can provide individual gene-expression profiles and new insights for elucidating biological mechanisms responsible for fruit development. To obtain an overall view on expression profiles of metabolism-related genes involved in fruit development of table and wine grapes,
Among the herbicides used in vineyards, the pre-emergence soil-applied flumioxazin (FMX) is a recently synthesized molecule that inhibits chlorophyll biosynthesis in weed species. The aim of this work was to characterize the effects of FMX on non-target grapevine ( Vitis vinifera L. cv. Chardonnay)
Leaves are an important contributor toward berry sugar and nitrogen (N) accumulation, and leaf area, therefore, affects fruit composition during grapevine (Vitis vinifera) berry ripening. The aim of this study was to investigate the impact of leaf presence on key berry quality attributes in
Flavescence dorée (FD), caused by the phytoplasma Candidatus Phytoplasma vitis, is a major threat to vineyard survival in different European grape-growing areas. It has been recorded in French vineyards since the mid-1950s, and rapidly spread to other countries. In Portugal, the phytoplasma