Molecular Variation and Phylogeny of Thymidylate Kinase Genes of Phytoplasma ziziphi from Different Resistant and Susceptible Jujube Cultivars in China.

The thymidylate kinase () gene is indispensable for the proliferation and survival of phytoplasma. To reveal the molecular variation and phylogeny of the genes of phytoplasma ziziphi, in this study, the genes of 50 phytoplasma strains infecting different resistant and susceptible jujube cultivars from different regions in China were amplified and analyzed. Two sequence types, and , were identified using clone-based sequencing.

First Report of ' Phytoplasma ziziphi'-Related Strains Infecting Peony ( Andr.) Showing Leaf Yellows Symptoms in China.

Peony ( Andr.), belonging to family Paeoniaceae, is an important medicinal and ornamental plant. During August of each year from 2016 to 2023, peony plants at Heze city were found to exhibit leaf yellows symptoms.