GRAPE PHYLLOXERA CONROL IN GRAPES WITH MOVENTO, 2007-2008

Leaf-galling phylloxera on grapes reprograms host metabolism and morphology.

Endoparasitism by gall-forming insects dramatically alters the plant phenotype by altering growth patterns and modifying plant organs in ways that appear to directly benefit the gall former. Because these morphological and physiological changes are linked to the presence of the insect, the induced phenotype is said to function as an extension of the parasite, albeit by unknown mechanisms. Here ...

Yeasts Occurring on Grapes and in Grape Products in California.

Grapes on steroids. Brassinosteroids are involved in grape berry ripening.

Fruit ripening is a unique plant developmental process with direct implications for our food supply, nutrition, and health. In contrast to climacteric fruit, where ethylene is pivotal, the hormonal control of ripening in nonclimacteric fruit, such as grape (Vitis vinifera), is poorly understood. Brassinosteroids (BRs) are steroidal hormones, essential for normal plant growth and development but...

Phenolic Bioactives in Grapes and Grape-Based Products

Polyphenols are a large and complex group of compounds responsible for the characteristics, quality, and color of grape and wine, especially for red ones. The polyphenolic composition has been extensively studied and a large family of structures have been identied in grapes and wine (Ribereau-Gayon 1965; Somers 1971; Nagel and Wulf 1979; Slinkard and Singleton 1984; Bourzeix et al. 1986; Cheyn...

Growth in Tissue Culture of Single-Cell Clones From Grape Stem & Phylloxera Gall.

Information about the behavior of clones of plant tissue of single-cell origin is valuable for our understanding of diseased and normal cell growth. Questions appeared about the variability of the cells in the insect-induced galls. Perhaps only a few diseased cells were responsible for the mass of abnormal, rapidly increasing cells, and the majority of the other cells provided a favorable nutri...