An Outbreak of Beet Leafhopper-Transmitted Virescence Agent and <i>Spiroplasma citri</i> in Cabbage ( <i>Brassica oleracea</i> var. <i>capitata</i> ) and Brussels Sprouts ( <i>B. oleracea</i> var. <i>gemmifera</i> ) Grown in the Columbia Basin of Ore

Mollicutes transmitted by beet leafhoppers ( Circulifer tenellus) can be yield-limiting in a range of crops including hemp, potatoes, carrots, and cole crops ( Brassica oleracea). In 2021, both ‘ Candidatus Phytoplasma trifolii’, a beet leafhopper-transmitted virescence agent, and Spiroplasma citri were detected in cole crops in Morrow County, Oregon. This report details the molecular identification efforts for both pathogens. The confirmation of both mycoplasmas in cabbage and Brussels sprouts in the Columbia Basin may have management implications for vegetable and hemp producers in the region.