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Gene expression changes in leaves of Citrus sinensis (L.) Osbeck infected by Citrus tristeza virus

文献类型： 外文期刊

作者： Cheng, Chunzhen 1 ; Zhang, Yongyan 2 ; Zhong, Yun 3 ; Yang, Jiawei 4 ; Yan, Shutang 5 ;

作者机构： 1.Fujian Agr & Forestry Univ, Inst Hort Biotechnol, Fuzhou, Peoples R China

2.Fujian Agr & Forestry Univ, Coll Hort, Fuzhou 350002, Peoples R China

3.Guangdong Acad Agr Sci, Inst Fruit Tree Res, Guangzhou, Guangdong, Peoples R China

4.Agr Bur Rongxian, Econ Crop Stn, Zigong, Peoples R China

5.Southwest Univ, Inst Citrus Res, Chongqing, Peoples R China

关键词： Citrus tristeza virus (CTV);differentially expressed genes (DEGs);microarray;plant-pathogen interaction

期刊名称：JOURNAL OF HORTICULTURAL SCIENCE & BIOTECHNOLOGY （ 影响因子：1.641； 五年影响因子：1.616 ）

ISSN：

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收录情况： SCI

摘要： Transcriptional changes between Citrus tristeza virus (CTV) inoculated- and mock inoculated-sweet orange 'Jincheng' (Citrus sinensis Osbeck cv. 'Jincheng') leaves were compared using microarrays. A total of 2400 differentially expressed genes (DEGs, fold change >= 2), 1557 (64.85%) up-regulated and 843 (35.15%) down-regulated, were obtained. Data mining revealed that CTV infection enhanced the transcription of genes involved in cell wall metabolism, plant defense, and material transport while it decreased the expression of protein synthesis and cytokinin metabolism-related genes. CTV infection strongly affected pathways involved in light reaction, starch and sucrose metabolism, lipid metabolism, and hormone metabolism. Secondary metabolism pathways including terpenoids, phenylpropanoids, flavonoids and alkaloid metabolism were also greatly influenced. Notably, several gibberellin (GA)-regulated genes were significantly induced by CTV. Quantitative real-time polymerase chain reaction (qRT-PCR) was applied to confirm the expression changes of 13 DEGs detected by microarray analysis. Our data described the early molecular changes of sweet orange in response to CTV infection and should provide informative suggestions for transgene selection of citrus genetic breeding.

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