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Decreasing detection frequency of MITE (MCLas-A) in the population of 'Candidatus Liberibacter asiaticus' recently collected in southern China

文献类型： 外文期刊

作者： Cui Xue-jin 1 ; Zeng Chun-hua 1 ; Liu Ke-hong 1 ; Teng Cal-ling 1 ; Zhou Chang-yong 1 ; Wang Xue-feng 1 ;

作者机构： 1.Southwest Univ, Natl Citrus Engn Res Ctr, Citrus Res Inst, Chinese Acad Agr Sci, Chongqing 400712, Peoples R China

关键词： Huanglongbing; 'Candidatus Liberibacter asiaticus'; miniature inverted-repeat transposable element; MITE

期刊名称：JOURNAL OF INTEGRATIVE AGRICULTURE （ 影响因子：2.848； 五年影响因子：2.979 ）

ISSN： 2095-3119

年卷期： 2020 年 19 卷 10 期

页码：

收录情况： SCI

摘要： An active miniature inverted-repeat transposable element (MITE), MCLas-A, was previously identified from 'Candidatus Liberibacter asiaticus' known to be associated with citrus Huanglongbing (HLB, yellow shoot disease). To explore the recent transposition status of MCLas-A, 389 'Ca. L. asiaticus' strains collected from nine regions in China were amplified using a specific primer set and three representative 'Ca. L. asiaticus' strains were analyzed by next-generation sequencing (NGS) approach. PCR and genomic analysis showed that the entire MCLas-Awas only present in 1.80% (7/389) and the jumping-out type of the MITE was predominant (81.23%) in samples tested, suggesting high frequency transposition occurred in 'Ca. L. asiaticus' strains recently collected from China. Biological roles of transposition of the active MITE remain to be determined.

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