烟草属(Nicotiana)抗病基因VIGS沉默系统的构建

烟草属(Nicotiana)抗病基因VIGS沉默系统的构建

论文摘要

植物中已经克隆出来的抗病基因大多数包含NBS-LRR结构域,这类基因经常以簇的形式存在于基因组中,其中有功能的抗病基因会与其相应病原体的无毒基因作用,发生程序性细胞死亡(即过敏反应),从而限制病原物的扩散来保护植株的其它部位不受侵染。本实验以烟草野生种为对象,研究接种苗龄、农杆菌浓度、乙酰丁香酮浓度和培养温度等四个方面对11种烟草野生种VIGS(virus induced gene silencing, VIGS)沉默效率的影响,优化最合适的VIGS沉默体系:研究表明,在烟草苗龄6叶(出苗后生长20~25天),侵染的农杆菌OD600值0.6,AS浓度为400mmol/L,培养环境为22℃,16h黑暗;18℃,8h光照条件下,可以获得VIGS沉默的最佳效果。此外,本研究在该条件下对另外14种烟草野生物种VIGS沉默效率也进行了研究。同时根据茄科中已知的抗病基因的序列设计引物,在Nicotiana alata中扩增,进而构建pTRV系统病毒诱导的基因沉默(VIGS)载体。本研究共构建了113个载体,覆盖了茄科中所有已知的抗病基因家族。利用已知功能的人7基因,对该系统进行验证,结果表明其中的N基因家族沉默载体有效地沉默了N. benthamiana中的对烟草花叶病毒(TMV)抗性。该套VIGS载体有望用于分析烟草属中NBS-LRR编码的各种抗性,并快速克隆抗病基因,从而为烟草、番茄、马铃薯等作物提供新的抗性资源。

论文目录

  • 摘要
  • Abstract
  • 缩略词表
  • 1 前言
  • 1.1 植物病害
  • 1.2 植物免疫系统
  • 1.2.1 植物抗病基因
  • 1.2.2 TMV与N基因的互作
  • 1.3 抗病基因的克隆方法
  • 1.3.1 转座子标签技术
  • 1.3.2 图位克隆
  • 1.3.3 抗病基因同源序列克隆
  • 1.3.4 比较基因组学
  • 1.4 病毒诱导的基因沉默(VIGS)
  • 1.4.1 VIGS的原理
  • 1.4.2 VIGS操作中需要注意的问题
  • 1.4.3 VIGS的优点
  • 1.4.4 VIGS的缺点以及改善措施
  • 1.5 课题研究目的
  • 2 材料和方法
  • 2.1 材料
  • 2.1.1 烟草野生种
  • 2.1.2 材料的种植
  • 2.1.3 生物信息学分析数据库
  • 2.2 实验方法
  • 2.2.1 构建VIGS载体
  • 2.2.2 烟草中VIGS沉默效率因素研究
  • 2.2.3 不同烟草野生种中VIGS沉默效果
  • 2.2.4 VIGS沉默载体有效性检测
  • 3 结果与讨论
  • 3.1 结果
  • 3.1.1 目标基因引物设计
  • 3.1.2 载体构建结果
  • 3.1.3 以N基因检测已构建VIGS载体有效性
  • 3.1.4 分析不同条件下烟草不同野生物种的VIGS效率
  • 3.1.5 最佳条件下烟草属的一些物种VIGS沉默效果分析
  • 3.2 讨论
  • 3.2.1 VIGS体系优化存在的问题
  • 3.2.2 如何应用VIGS体系
  • 附录
  • 参考文献
  • 致谢
  • 相关论文文献

    • [1].The Essential Role of Jasmonic Acid in Plant-Herbivore Interactions-Using the Wild Tobacco Nicotiana attenuata as a Model[J]. Journal of Genetics and Genomics 2013(12)
    • [2].A patatin-like protein synergistically regulated by jasmonate and ethylene signaling pathways plays a negative role in Nicotiana attenuata resistance to Alternaria alternata[J]. Plant Diversity 2019(01)
    • [3].Silencing Brassinosteroid Receptor BRI1 Impairs Herbivory-elicited Accumulation of Jasmonic Acid-isoleucine and Diterpene Glycosides, but not Jasmonic Acid and Trypsin Proteinase Inhibitors in Nicotiana attenuata[J]. Journal of Integrative Plant Biology 2013(06)
    • [4].Mechanisms of Optimal Defense Patterns in Nicotiana attenuata: Flowering Attenuates Herbivory-elicited Ethylene and Jasmonate Signaling[J]. Journal of Integrative Plant Biology 2011(12)
    • [5].Silencing NOA1 Elevates Herbivory-Induced Jasmonic Acid Accumulation and Compromises Most of the Carbon-Based Defense Metabolites in Nicotiana attenuata[J]. Journal of Integrative Plant Biology 2011(08)
    • [6].DICER-like Proteins and Their Role in Plant-herbivore Interactions in Nicotiana attenuata[J]. Journal of Integrative Plant Biology 2012(03)
    • [7].黄花烟草(Nicotiana rustica)、迪勃纳氏烟草(Nicotiana debneyi)与Nicotiana tabacum K326互交亲和性的荧光鉴定[J]. 西北农业学报 2014(01)
    • [8].Sugarcane mosaic virus infection of model plants Brachypodium distachyon and Nicotiana benthamiana[J]. Journal of Integrative Agriculture 2019(10)
    • [9].ZEITLUPE is required for shade avoidance in the wild tobacco Nicotiana attenuata[J]. Journal of Integrative Plant Biology 2020(09)
    • [10].Narboh D, a Respiratory Burst Oxidase Homolog in Nicotiana attenuata, is Required for Late Defense Responses After Herbivore Attack[J]. Journal of Integrative Plant Biology 2013(02)
    • [11].NaPDR1 and NaPDR1-like are essential for the resistance of Nicotiana attenuata against fungal pathogen Alternaria alternata[J]. Plant Diversity 2018(02)
    • [12].Shifting Nicotiana attenuata's diurnal rhythm does not alter its resistance to the specialist herbivore Manduca sexta[J]. Journal of Integrative Plant Biology 2016(07)
    • [13].Fitness consequences of a clock pollinator filter in Nicotiana attenuata flowers in nature[J]. Journal of Integrative Plant Biology 2017(11)
    • [14].烟草(Nicotiana tabacum)非生物胁迫抗性分子机制研究进展[J]. 分子植物育种 2020(04)
    • [15].Cloning of a Calcium-Dependent Protein Kinase Gene NtCDPK12, and Its Induced Expression by High-Salt and Drought in Nicotiana tabacum[J]. Agricultural Sciences in China 2011(12)
    • [16].烟草(Nicotiana tabacum)钾吸收的分子机制研究进展[J]. 分子植物育种 2019(22)
    • [17].Localized micronutrient patches induce lateral root foraging and chemotropism in Nicotiana attenuata[J]. Journal of Integrative Plant Biology 2017(10)
    • [18].Cloning and Expression of Calcium-Dependent Protein Kinase (CDPK) Gene Family in Common Tobacco (Nicotiana tabacum)[J]. Agricultural Sciences in China 2009(12)
    • [19].铁、锌配合施用对烟叶产量和品质的影响[J]. 湖北农业科学 2016(10)
    • [20].烟草Nicotiana glauca遗传瘤的诱导[J]. 安徽农业大学学报 2012(03)
    • [21].Nicotiana attenuata's capacity to interact with arbuscular mycorrhiza alters its competitive ability and elicits major changes in the leaf transcriptome[J]. Journal of Integrative Plant Biology 2018(03)
    • [22].Quantification of CP4-EPSPS in genetically modified Nicotiana tabacum leaves by LC-MS/MS with ~(18)O-labeling[J]. Journal of Beijing Institute of Technology 2015(02)
    • [23].Genetic variation in alkaloid accumulation in leaves of Nicotiana[J]. Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2013(12)
    • [24].烟草(Nicotiana tabacum)碳酸酐酶基因NtCA7的克隆及表达模式分析[J]. 分子植物育种 2019(14)
    • [25].Effect of Silicon on Growth, Physiology, and Cadmium Translocation of Tobacco (Nicotiana tabacum L.) in Cadmium-Contaminated Soil[J]. Pedosphere 2018(04)
    • [26].具翼烟草(Nicotiana alata)核型、C带与rDNA染色体定位研究[J]. 中国烟草学报 2017(01)
    • [27].烟草(Nicotiana tabacum)生长素响应基因NtIAA27的克隆及功能分析[J]. 分子植物育种 2020(12)
    • [28].Sesquiterpenes from the leaves of Nicotiana tabacum and their anti-tobacco mosaic virus activity[J]. Chinese Chemical Letters 2016(05)
    • [29].JA but not JA-Ile is the cell-nonautonomous signal activating JA mediated systemic defenses to herbivory in Nicotiana attenuata[J]. Journal of Integrative Plant Biology 2017(08)
    • [30].烟草法呢基焦磷酸合酶基因的克隆及序列分析[J]. 烟草科技 2010(01)

    标签:;  ;  ;  

    烟草属(Nicotiana)抗病基因VIGS沉默系统的构建
    下载Doc文档

    猜你喜欢