MECHANISMS OF PIERCES DISEASE TRANSMISSION IN GRAPEVINES: THE XYLEM PATHWAYS AND MOVEMENT OF XYLELLA FASTIDIOSA. XYLEM STRUCTURE AND CONNECTIVITY IN GRAPEVINE SHOOTS PROVIDES A PASSIVE MECHANISM FOR THE SPREAD OF BACTERIA IN GRAPE PLANTS INFECTED WI

• Author(s): Matthews, Mark; Rost, Thomas; Chatelet, David;
• Abstract: This progress report shows that there is a difference in the structure of xylem pathways available for Xylella fastidiosa (Xf) movement in host plants known to support systemic bacterial movement and those that dont. In addition to a reduced inter-organ connectivity, non-systemic species also show a shorter path available for bacterial movement in the leaves. However, systemic and non-systemic species show similar rates of tylose formation, signifying that tyloses dont seem to be responsible for the lack of Xf movement in the non-systemic plants. To be more conclusive, more xylem characteristics from the different hosts are being examined
• Publication Date: Nov 2006
• Journal: 2006 Pierce's Disease Research Symposium