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Grapevine susceptibility to Pierce's disease II: Progression of anatomical symptoms

The progression of anatomical symptoms of Pierce's disease in susceptible Vitis vinifera cv. Chardonnay grapevines was studied over a time course following controlled inoculation of Y-shaped, two-s...

Grapevine susceptibility to Pierce's disease I: Relevance of hydraulic architecture

The arrangement of vascular tissue within the nodes of Chardonnay grapevine (Vitis vinifera) shoots was studied as an investigation of potential pathways of infection for the bacterium Xylella-fast...

Passive Pathogen Movement via Open Xylem Conduits in Grapevine Graft Unions

In grapevines, scion-rootstock grafting is a common practice to impart pathogen resistance and to manipulate aspects of grapevine physiology, including vigor, yield, and fruit composition. Successf...

Pierce's disease symptoms: Comparison with symptoms of water deficit and the impact of water deficits

The pathology of diseases such as Pierce's disease (PD) of grapevine (Vitis vinifera L.) that are caused by the xylem-limited bacterium Xylella fastidiosa (Xf) is widely attributed to vessel occlus...

Pruning-induced tylose development in stems of current-year shoots of Vitis vinifera (Vitaceae)

Tyloses form in xylem vessels in response to various environmental stimuli, but little is known of the kinetics or regulation of their development. Preliminary investigations indicated that wounds ...

The effects of Pierce's disease on leaf and petiole hydraulic conductance in Vitis vinifera cv. Chardonnay

In this study, we test the hypothesis that the symptoms of Pierce's Disease (PD) result from the occlusion of xylem conduits by the bacteria Xylella fastidiosa (Xf ). Four treatments were imposed o...

The Xylella fastidosa RTX operons: evidence for the evolution of protein mosaics through novel genetic exchanges

Xylella fastidiosa (Xf) is a gram negative bacterium inhabiting the plant vascular system. In most species this bacterium lives as a benign symbiote, but in several agriculturally important plants ...

Xylem structure and connectivity in grapevine (Vitis vinifera) shoots provides a passive mechanism for the spread of bacteria in grape plants

Bacterial leaf scorch occurring in a number of economically important plants is caused by the xylem-limited bacterium Xylella fastidiosa (Xf). In grapevine, Xf systemic infection causes Pierce's di...

Xylem structure of four grape varieties and 12 alternative hosts to the xylem-limited bacterium Xylella fastidious

The bacterium Xylella fastidiosa (Xf), responsible for Pierce's disease (PD) of grapevine, colonizes the xylem conduits of vines, ultimately killing the plant. However, Vitis vinifera grapevine var...