Fig. 1.

Phenotypes of representative heathy and fully symptomatic plants at 70 d. Different A. thaliana lines were indicated as follows: (A) wild-type, (B) Atseor1ko, (C) Atseor2ko, (D) Atseor1ko/Atseor2kd, (E) Atseor1kd/Atseor2ko, and (F) Atpp2-a1ko. Phytoplasma infection altered the phenotype of A. thaliana, producing classic phytoplasma disease symptoms. Healthy plants (1) showed regular growth, while infected plants (2) were characterized by reduced growth and shorter, yellowish leaves, with a thick main vein. No obvious difference was recorded among the different plant lines. For each condition, 10 different plants were analysed.