叶锈菌侵染的小麦叶片转录组数据分析
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1.河北省植物生理与分子病理学重点实验室/河北农业大学生命科学学院,保定 071001;2.北京诺禾致源科技股份有限公司,北京 100012

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基金项目:

国家自然科学基金(31171472;31871548);高等学校博士学科点专项科研基金(优先发展领域, 20111302130001); 河北省应用基础研究计划重点基础研究项目(12967149D)


Transcriptome Analysis of Wheat Leaves Infected by Puccinia triticina
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Affiliation:

1.Key Laboratory of Hebei Province for Plant Physiology and Molecular Pathology/Hebei Agricultural University, Baoding 071001;2.Novogene Co., LTD,Beijing100012

Fund Project:

The National Natural Science Foundation of China (General Program, Key Program, Major Research Plan),Special research funds for doctoral disciplines in Universities (priority areas of development );Hebei key basic research project of applied basic research report

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    摘要:

    本研究选取小麦近等基因系 TcLr26 与其轮回亲本 Thatcher (Tc),与叶锈菌生理小种 260 分别组成不亲和及亲和组合, 通过 Illumina/Solexa 平台的 HiSeqTM2000 高通量测序技术对接种叶锈菌后的小麦转录组进行测序,利用 Trinity 软件将数据组 装形成转录本,对所有转录本进行 COG、GO 和 KEGG 分类和功能注释、Pathway 注释以及蛋白编码区的预测。结果表明,转 录组测序片段经 de novo 拼接共得到 87,291 条平均长度 866 bp 的 Unigenes;通过功能聚类,分别获得 25 个 COG 分类、55 个 GO 功能亚类和 128 条 KEGG 通路;差异表达基因分析显示,相对于亲和组合,不亲和组合在接种叶锈菌后 8h 上调 Unigenes 4,037 条,下调 Unigenes 1,949 条;接种后 24h,上调 Unigenes 2,122 条,下调 Unigenes 3,248 条。其中植物与病原物互作过 程中的钙信号通路,活性氧爆发及 SA 信号通路相关基因在不同时间有差异表达,在接种后 8h 所表达的差异基因可能与基础 防卫反应诱发密切相关,而在接种后 24h 的差异表达基因可能与 Lr26 介导的过敏性防卫反应表达有紧密联系。这为深入分析 和发掘小麦抗叶锈病相关基因及系统研究小麦抗锈病分子机制奠定了坚实基础。

    Abstract:

    In order to shed light the transcriptional reprograming of wheat upon Puccinia triticina infection, the wheat near isogenic line TcLr26 (incompatible, resistance) and its recurrent parent Thatcher (Tc) (compatible, susceptibility) were inoculated by physiological race 260, and then harvested for RNA-seq analysis using HiSeqTM2000 high-throughput sequencing technology. The assembled transcripts were subjected to analyze COG, GO and KEGG classification and functional annotation, pathway annotation and in silico prediction of coding genes. Total 87,291 Unigenes were obtained after de novo assembly, with an average length of 866 bp. The functional clustering analysis revealed 25 COG classifications, 55 GO functional subclasses and 128 KEGG paths. By analyzing the differentially expressed genes (DEGs) between compatible and incompatible combinations, a total of 4,037 up-regulated and 1,949 down-regulated Unigenes were identified at 8 h, and 2,122 up-regulated and 3,248 down-regulated Unigenes were identified at 24 h. The genes, which residue to the calcium signaling pathway, active oxygen burst and SA signaling pathway, were found to be differentially expressed at different time point. The DEGs at 8h and 24h after inoculation were assumed to be closely related to the induction of basic defense response and Lr26-mediated HR defense response, respectively. Taken together, the generated datasets would be useful for further analysis and evaluation of wheat resistance related genes against Puccinia triticina.

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刘娜,乔妹,孙嘉伟,等.叶锈菌侵染的小麦叶片转录组数据分析[J].植物遗传资源学报,2019,20(4):911-1000.

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  • 收稿日期:2018-10-23
  • 最后修改日期:2019-01-24
  • 录用日期:2019-03-01
  • 在线发布日期: 2019-07-16
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