Genetic diversity of 'Cadidatus Liberibacter solanacearum' strains in the United States and Mexico revealed by simple sequence repeat markers
文献类型： 外文期刊
作者： Lin, Hong 1 ; Islam, Md Sajedul 1 ; Bai, Yang 1 ; Wen, Amin 3 ; Lan, Suque 1 ; Gudmestad, Neil C. 3 ; Civerolo, Edwin 1 ;
作者机构： 1.USDA ARS, Crop Dis Pests & Genet Res Unit, Parlier, CA 93648 USA
2.Guangxi Citrus Res Inst, Guilin, Peoples R China
3.N Dakota State Univ, Dept Plant Pathol, Fargo, ND 58108 USA
4.Hebei Acad Agr & Forestry Sci, Inst Cereal & Oil Crops, Shijiazhuang, Peoples R China
关键词： Zebra chip (ZC);'Cadidatus Liberibacter solanacearum';Simple sequence repeat (SSR) markers;Genetic diversity
期刊名称：EUROPEAN JOURNAL OF PLANT PATHOLOGY （ 影响因子：1.907； 五年影响因子：2.022 ）
ISSN： 0929-1873
年卷期： 2012 年 132 卷 2 期
页码：
收录情况： SCI
摘要： 'Candidatus Liberibacter solanacearum' is associated with the Zebra Chip (ZC) disorder of potatoes. A panel of eight simple sequence repeat (SSR) markers was developed and used to genetically characterize 'Ca. L. solanacearum' strains obtained from ZC-affected potato plants in the United States and Mexico. The multilocus SSR markers in this study effectively differentiated genotypes and estimated genetic diversity of 'Ca. L. solanacearum' strains. Genotype assignment analyses identified two major lineages of 'Ca. L. solanacearum' in the North American populations while only one lineage type was identified in Mexican population. No clear genetic structure was found among haplotypes based on geographical proximity or host. The high resolution power of the SSR marker system developed in this study provides a useful tool for genotyping closely related strains and tracking sources of the pathogen. Genotype information combined with epidemiological data will advance knowledge of ZC disease and will facilitate development of effective disease management.
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