New Perspectives on the Epidemiology of Citrus Stubborn Disease in California Orchards

Fig. 1. Center set of citrus tissues (fruit, stem, and leaves) harvested from citrus trees with citrus stubborn symptoms and on the edges, different citrus tissues that were compared to their suitability for cultivation of Spiroplasma citri.



Image from Plant Health Progress article:
New Perspectives on the Epidemiology of Citrus Stubborn Disease in California Orchards