First report of a 'Candidatus Phytoplasma fraxini'‐related strain associated with witches'‐broom of Arizona ash.

The article discusses a 2021 report on the infection of Arizona ash trees by Candidatus Phytoplasma fraxini-related strain associated with witches-broom symptoms in Arizona ash. It states that the infection causes yellowing leaf symptoms, and shoot proliferation as a result of abnormal forcing of lateral buds. Also noted is the need to manage the strain due its potential threat to other ash species or crops like grapevine.