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Global gene expression changes in CandidatusLiberibacter asiaticus during the transmission in distinct hosts between plant and insect

文献类型： 外文期刊

作者： Yan, Qing 1 ; Sreedharan, Aswathy 1 ; Wei, Shiping 1 ; Wang, Jihua 1 ; Pelz-Stelinski, Kirsten 1 ; Folimonova, Svet 1 ;

作者机构： 1.Univ Florida, IFAS, Citrus Res & Educ Ctr, Dept Microbiol & Cell Sci, Lake Alfred, FL 33850 USA

2.Guangdong Acad Agr Sci, Crops Res Inst, Guangzhou 510640, Guangdong, Peoples R China

期刊名称：MOLECULAR PLANT PATHOLOGY （ 影响因子：5.663； 五年影响因子：5.626 ）

ISSN： 1464-6722

年卷期： 2013 年 14 卷 4 期

页码：

收录情况： SCI

摘要： Huanglongbing (HLB) or citrus greening disease is a destructive disease of citrus worldwide, which is associated with CandidatusLiberibacter asiaticus. This phloem-limited fastidious pathogen is transmitted by the Asian citrus psyllid, Diaphorina citri, and appears to be an intracellular pathogen that maintains an intimate association with the psyllid or the plant throughout its life cycle. The molecular basis of the interaction of this pathogen with its hosts is not well understood. We hypothesized that, during infection, Ca. L.asiaticus differentially expresses the genes critical for its survival and/or pathogenicity in either host. To test this hypothesis, quantitative reverse transcription-polymerase chain reaction was performed to compare the gene expression of Ca. L.asiaticus inplanta and in psyllid. Overall, 381 genes were analysed for their gene expression inplanta and in psyllid. Among them, 182 genes were up-regulated inplanta compared with in psyllid (P<0.05), 16 genes were up-regulated in psyllid (P<0.05) and 183 genes showed no statistically significant difference (P0.05) in expression between inplanta and in psyllid. Our study indicates that the expression of the Ca. L.asiaticus genes involved in transcriptional regulation, transport system, secretion system, flagella assembly, metabolic pathway and stress resistance are changed significantly in a host-specific manner to adapt to the distinct environments of plant and insect. To our knowledge, this is the first large-scale study to evaluate the differential expression of Ca. L.asiaticus genes in a plant host and its insect vector.

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