Of Stone Fruit Bacterial Pathogens - Cost 873

Xanthomonas species (probably translucens) -dieback or decline• Described from Australia in 2001 from pistachio• Dieback of twigs, internal staining of tissues,lesions on trunk, limbs and branches, resinexudation and tree death. No fruit infection.• Bacterium moves quickly in new tissue but thandies and plants may recover• Pruning tools could transmit the disease. Othertransmission still unknown• Planting material could be a risk• Copper sprays not very effective when usedafter artificial infectionPistachioPhoto: Univ. of adelaide, au