Molecular Identification of a 16SrII-A Group-Related Phytoplasma Associated with Cinnamon Yellow Leaf Disease in China
文献类型: 外文期刊
第一作者: Yang, Yi
作者: Yang, Yi;Jiang, Lei;Che, Hai-Yan;Cao, Xue-Ren;Yang, Jing-Yu;Luo, Da-Quan;Yang, Yi;Jiang, Lei;Che, Hai-Yan;Cao, Xue-Ren;Yang, Jing-Yu;Luo, Da-Quan;Yang, Jing-Yu;Sang, Li-Wei;Liu, Ai-Qin
作者机构:
关键词: 16S rRNA;Candidatus Phytoplasma australasiae;cinnamon;sequence analysis;yellow leaf disease
期刊名称:JOURNAL OF PHYTOPATHOLOGY ( 影响因子:1.789; 五年影响因子:1.574 )
ISSN:
年卷期:
页码:
收录情况: SCI
摘要: Chinese cinnamon (Cinnamomum cassia Presl), an evergreen tree native to China, is a multifaceted medicinal plant. The stem bark of cinnamon is used worldwide in traditional and modern medicines and is one of the most popular cooking spices. In recent years, cinnamon with pronounced yellow leaf symptoms has been observed in their natural habitat in Hainan, China. Phytoplasmas were detected from symptomatic cinnamon trees via polymerase chain reaction using phytoplasma universal primers P1/P7 followed by R16F2n/R16R2. No amplification products were obtained from templates of asymptomatic cinnamon trees. These results indicated a direct association between phytoplasma infection and the cinnamon yellow leaf (CYL) disease. Sequence analysis of the CYL phytoplasma 16S rRNA gene determined that CYL phytoplasma is a 'Candidatus Phytoplasma australasiae'-related strain. Furthermore, virtual restriction fragment length polymorphism pattern analysis and phylogenetic studies showed that CYL phytoplasma belongs to the peanut witches'-broom (16SrII) group, subgroup A. This is the first report of a 16SrII group phytoplasma infecting cinnamon under natural conditions.
分类号: Q945
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