The Plant Pathology Journal 2007;23(2):106-108.
Published online June 30, 2007.
Candidatus Phytoplasma trifolii Associated with Witches` broom of Lespedeza cyrtobotrya M.
Young Hwan Kim, Hee Young Jung
The Symptoms of witches` broom disease caused by phytoplasma including general stunting and yellowing, were observed in leafy lespedeza (Lespedeza cyrtobotryaM.) on Doam-myeon, Pyeongchang-gun, in 2006. Based on the sequence analysis of PCR-amplified 16S ribosomalDNA and 16S-23S spacer region DNA products using universal phytoplasma primers, the phytoplasma as- sociated with leafy lespedeza witches` broom (LLWB) disease was identified as a member of Candidatus Pyto- plasma trifolii. It was most closely related to alsike clover proliferation phytoplasma (99.8% similarity, acce- ssion no. AY390261), Candidatus Pytoplasma trifolii strain. RFLP patterns generated with Alu I, Hpa II clearly differentiated LLWB phytoplasma from the referenced phytoplasma strains, water dropwort witches`broom, mulberry dwarf, glehni aster yellow dwarf and jujube witches` broom. This paper is the first report on Candidatus Phytoplasma trifolii in leafy lespedeza identified at a molecular level.
Key Words: Phytoplasma, Lespedeza cyrtobotrya, Phylogeny
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