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大丽轮枝菌原生质体转化体系及FreB基因功能分析

摘要第5-6页
abstract第6-7页
Abbreviations第11-12页
CHAPTER I INTRODUCTION第12-21页
    1.1 Verticillium dahliae第12-14页
        1.1.1 Life cycle of Verticillium dahliae第13页
        1.1.2 Host range of Verticillium dahliae第13页
        1.1.3 Symptoms caused by Verticillium dahliae第13-14页
    1.2 Transformation of Verticillium dahliae第14-17页
        1.2.1 Biolistic transformation第14-15页
        1.2.2 Electroporation第15页
        1.2.3 Agrobacterium tumefaciens-mediated transformation (ATMT)第15-16页
        1.2.4 PEG-mediated transformation第16-17页
    1.3 Ferric reductase transmembrane component 3 precursor第17-18页
    1.4 Aims and objectives of the study第18-21页
CHAPTER II MATERIALS AND METHODS第21-40页
    2.1 Fungal growth and spores’ collection第21页
    2.2 Protoplast isolation第21页
    2.3 Regeneration of protoplast第21-22页
    2.4 GFP plasmid and siRNAs第22-23页
    2.5 PEG-mediated transformation第23-24页
    2.6 Electroporation第24页
    2.7 siRNA inhibition assay for GFP and Vta2 genes第24-25页
    2.8 RNA extraction第25-26页
    2.9 First strand cDNA synthesis第26页
    2.10 qRT-PCR analysis of Vta2 expression level第26-27页
    2.11 Genomic DNA isolation第27-28页
    2.12 Phylogenetic analysis of FreB第28-29页
    2.13 Plasmid construction for mutants’ generation第29-35页
        2.13.1 PCR amplification of the respective fragments and genes第29-30页
        2.13.2 Gel purification of PCR products by Gel purification kit第30-31页
        2.13.3 Cloning the purified PCR product into T-vector第31页
        2.13.4 Transformation into Escherichia coli (heat shock method)第31页
        2.13.5 Construction of gene knockout fragment第31-33页
        2.13.6 Construction of GFP tagged plasmid第33页
        2.13.7 Construction of plasmid for complementation第33-34页
        2.13.8 Extraction of plasmid第34-35页
    2.14 PEG-mediated protoplast transformation for mutants’ generation第35-36页
        2.14.1 Generation of FreB knockout mutants (ΔFreB)第35页
        2.14.2 Generation of GFP disruption mutants第35-36页
        2.14.3 Generation of FreB complementary mutants (ΔFreB-C)第36页
    2.15 Growth of ΔFreB on different carbon sources第36页
    2.16 Analysis of growth on media with different iron sources第36-37页
    2.17 Ferric reductase assay第37页
    2.18 Oxidative stress assay第37页
    2.19 Pathogenicity assay第37-38页
    2.20 Disease index第38页
    2.21 Expression analysis of related genes第38-39页
    2.22 Composition of media and buffers第39-40页
CHAPTER III Building an efficient transformation system for Verticillium dahliae第40-49页
    3.1 Introduction第40-42页
    3.2 Results第42-47页
        3.2.1 Isolation of protoplasts第42-44页
        3.2.2 Regeneration of protoplast第44-45页
        3.2.3 Observation of fluorescence from GFP expression第45页
        3.2.4 GFP transformants selection and stability of the transgene第45-46页
        3.2.5 Silencing of GFP gene in Vd-GFP strain with siRNAs第46页
        3.2.6 Silencing of Vta2 gene第46-47页
    3.3 Conclusion第47-49页
CHAPTER IV Plasmid construction for gene deletion and complementation第49-59页
    4.1 Introduction第49-50页
    4.2 Results第50-58页
        4.2.1 Phylogenetic analysis第50页
        4.2.2 Generation of FreB mutants第50-53页
        4.2.3 Generation of GFP tagged mutants第53-56页
        4.2.4 Generation of FreB complementary mutants第56-58页
    4.3 Conclusion第58-59页
CHAPTER V Analysis of ΔFreB mutants第59-70页
    5.1 Introduction第59-60页
    5.2 Results第60-68页
        5.2.1 Carbon sources utilization assay第60-62页
        5.2.2 Comparing the growth of mutants on different iron sources第62-64页
        5.2.3 Deletion of FreB gene impaired the surface ferric reductase activity第64-65页
        5.2.4 Disruption of FreB gene resulted in increased susceptibility to oxidative stress54第65-66页
        5.2.5 Deletion of FreB gene resulted in increased expression level of related genes..555.2.6 FreB deletion attenuates virulence of V. dahliae第66-67页
        5.2.6 FreB deletion attenuates virulence of V. dahliae第67-68页
    5.3 Conclusion第68-70页
DISCUSSION第70-74页
CONCLUSION第74-75页
REFERENCES第75-84页
ACKNOWLEDGEMENTS第84-85页
CURRICULUM VITAE第85-86页

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