小RNA测序和组装:从防御分子重建病毒基因组Small RNA sequencing and assembly: reconstructing viral genomes from defence molecules |
|
课程网址: | http://videolectures.net/nib_kreuze_sequencing/ |
主讲教师: | Jan Kreuze |
开课单位: | 国际马铃薯研究中心 |
开课时间: | 2013-05-07 |
课程语种: | 英语 |
中文简介: | RNA沉默是植物抗病毒的基本防御机制,宿主酶将病毒RNA切割成20-24个核苷酸。当这些病毒衍生的小RNA(sRNA)序列被分离、大规模测序并正确组装或对齐时,可以重建植物中目标病毒的基因组序列信息。这种方法不依赖于培养或纯化病毒的能力,不需要任何特定的病毒核酸扩增或富集,因为它通过利用天然的抗病毒防御机制自动富集病毒来源的小RNA。本文将介绍应用该技术识别新植物病毒的结果,以及病毒的图谱变异性和分布。 |
课程简介: | RNA silencing constitutes a fundamental antiviral defence mechanism in plants in which host enzymes cut viral RNA into pieces of 20-24 nucleotides. When isolated, sequenced en mass and properly assembled or aligned these virus-derived small RNA (sRNA) sequences can reconstitute genomic sequence information of the viruses being targeted in the plant. This approach is independent of the ability to culture or purify the virus and does not require any specific amplification or enrichment of viral nucleic acids as it automatically enriches for small RNAs of viral origin by tapping into a natural antiviral defence mechanism. Results from the application of this technique to identify novel plant viruses as well as map variability and distribution of viruses will be presented. |
关 键 词: | RNA沉默; 植物抗病毒; 基本防御机制 |
课程来源: | 视频讲座网 |
数据采集: | 2022-03-26:zkj |
最后编审: | 2022-03-26:zkj |
阅读次数: | 61 |