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Multilocus genotyping identifies a highly homogeneous phytoplasma lineage associated with sweet cherry virescence disease in China and its carriage by an erythroneurine leafhopper

文献类型： 外文期刊

作者： Wang, Jiawei 1 ; Liu, Qingzhong 1 ; Wei, Wei 2 ; Davis, Robert E. 2 ; Tan, Yue 1 ; Lee, Ing-Ming 2 ; Zhu, Dongzi 1 ; Wei, 1 ;

作者机构： 1.Shandong Inst Pomol, Tai An 271000, Shandong, Peoples R China

2.USDA ARS, Mol Plant Pathol Lab, Beltsville, MD 20705 USA

关键词： Sweet cherry;Floral virescence;Phytoplasma infection;Subgroup 16SrV-B;Pathogen genotyping;Leafhopper

期刊名称：CROP PROTECTION （ 影响因子：2.571； 五年影响因子：3.11 ）

ISSN： 0261-2194

年卷期： 2018 年 106 卷

页码：

收录情况： SCI

摘要： Phytoplasmas are a diverse group of insect-transmitted, cell wall-less bacteria that colonize plant phloem sieve elements and cause numerous diseases in economically important crops. Living a trans-kingdom parasitic life, phytoplasmas possess dynamic genomes and evolve rapidly toward formation of distinct ecological lineages in their adaptation to specific ecological niches. In an effort aimed at identification of the etiological agent responsible for a repeatedly-occurring sweet cherry virescence (SCV) disease in China, we found that the SCV disease was consistently associated with infection by a phytoplasma belonging to subgroup B of the elm yellows phytoplasma group (16SrV-B). Further analysis of genetic loci that encode important phytoplasma cellular components, including an array of ribosomal proteins and preprotein translocase subunit SecY, revealed that the SCV phytoplasma was essentially indistinguishable from the subgroup 16SrV-B phytoplasma strains responsible for jujube witches'-broom (JWB) disease and diseases of many other plants. Evidence gathered in the present study indicated that SCV-JWB phytoplasma strains formed a highly homogenous ecological lineage. The study also revealed that a polyphagous leafhopper, Taoyidianyechan (in Chinese and often being cited as Erythroneura sudra), was able to carry the SCV phytoplasma, emphasizing a need to investigate whether this erythroneurine leafhopper plays a role in spreading the SCV phytoplasma among sweet cherry plants.

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