What bacteria cause trees to die?

Several bacteria can cause trees to die, with some of the most notable being Erwinia amylovora, which causes fire blight in Apple and pear trees, and Xylella fastidiOSa, responsible for various diseases in a wide range of plants, including olive trees. Other harmful bacteria include Pseudomonas syringae, which can lead to cankers and other diseases in many tree species. These pathogens disrupt the tree's vascular system, leading to reduced nutrient and water uptake, ultimately resulting in decline and death. Control measures often involve proper sanitation and management practices to mitigate the spread of these bacteria.