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温室条件下芽孢杆菌的生物活性及对番茄青枯病菌的抑制机制研究

Acknowledgment第10-11页
Table of Contents第11-15页
List of Tables第15-16页
List of Figures第16-19页
Abstract第19-20页
摘要第21-23页
Chapter 1 Introduction第23-28页
Chapter 2 Literature review第28-54页
    2.1. Tomato bacterial wilt第28-38页
        2.1.1. Economic impact & geographical distribution第28-30页
        2.1.2. The Pathogen-Ralstonia solanacearum第30页
        2.1.3. Pathogen classification第30-31页
        2.1.4. Disease symptoms on Tomato plants第31-32页
        2.1.5. Disease cycle and Epidemiology第32-34页
        2.1.6. Pathogen survival forms in the environment第34-35页
        2.1.7. Bacterial wilt management第35-38页
    2.2. Sustainable use of Bacilli for Biocontrol第38-43页
        2.2.1. Taxonomy and classification of Bacillus spp第40-41页
        2.2.2. Bacillus methylotrophicus as a bioagent第41页
        2.2.3. Bacillus amyloliquefaciens as a bioagent第41-43页
    2.3. Mechanisms involved in PGPR bioactivity第43-54页
        2.3.1. Antagonism toward phytopathogen第43-51页
            2.3.1.1. Competition for root colonization第43-45页
            2.3.1.2. Biofilm formation第45-46页
            2.3.1.3. Siderophores production第46页
            2.3.1.4. Antibiosis第46-48页
            2.3.1.5. Lytic enzyme production第48-49页
            2.3.1.6. Induced systemic resistance第49-51页
        2.3.2. Plant growth intensification第51-54页
            2.3.2.1. Biological N_2 Fixation第51-52页
            2.3.2.2. Phosphor solubilization第52-53页
            2.3.2.3. Phytohormones production第53-54页
Chapter 3 Characterization and evaluation of Bacillus isolates for their potential plant growth promotion andbiocontrol activities against tomato bacterial wilt第54-72页
    3.1. Abstract第54页
    3.2. Introduction第54-56页
    3.3. Materials and Methods第56-61页
        3.3.1. Isolation of potential antagonistic isolates第56-57页
        3.3.2. Plant pathogen and culture conditions第57页
        3.3.3. Preliminary screening for antagonistic activity in vitro第57页
        3.3.4. Laboratory in vitro assay for studying antagonism第57-58页
        3.3.5. Evaluation of antagonistic isolates in greenhouse第58-60页
            3.3.5.1. Application by antagonistic strains第58-59页
            3.3.5.2. Inoculation of R. solanacearum第59页
            3.3.5.3. Disease assessment第59页
            3.3.5.4. Plant growth parameters assessments第59-60页
        3.3.6. Identification of selected bacterial strains第60-61页
            3.3.6.1. Sequence analysis for 16S rRNA gene第60页
            3.3.6.2. Fatty acid methyl esters (FAMEs) analysis第60-61页
            3.3.6.3. Biochemical and physiological characterizations第61页
        3.3.7. Statistical analysis第61页
    3.4. Results第61-68页
        3.4.1. In vitro screening of bacterial antagonistic activity第61页
        3.4.2. Greenhouse study第61-65页
        3.4.3. Antifungal activity of selected strains第65-68页
        3.4.4. Bacterial strains identification第68页
    3.5. Discussion第68-72页
Chapter 4 Synergistic effect of Acetyl salicylic acid and DL-Beta-aminobutyric acid on biocontrol efficacy ofBacillus strains against tomato bacterial wilt第72-92页
    4.1. Abstract第72页
    4.2. Introduction第72-74页
    4.3. Materials and methods第74-80页
        4.3.1. Origins of bacterial strains, plant materials and chemical inducers第74页
        4.3.2. Compatibility trials第74页
        4.3.3. In vitro evaluation of antagonists and plant defense inducers against R. solanacearum第74-75页
        4.3.4. Pot experiments第75-80页
            4.3.4.1. Biochemical analysis第77-79页
            4.3.4.2. Specific detection and quantification of R. solanacearum by real-time PCR第79-80页
        4.3.5. Statistical analysis第80页
    4.4. Results第80-88页
        4.4.1. Compatibility tests第80页
        4.4.2. In vitro tests第80-81页
        4.4.3. Greenhouse trials第81-88页
            4.4.3.1. Effect of treatments on AUDPC and disease incidence第81页
            4.4.3.2. Effect of treatments on plant growth parameters第81-83页
            4.4.3.3. Biochemical analysis第83页
            4.4.3.4. Native gel electrophoresis of POD and PPO第83-85页
            4.4.3.5. Quantification of R. solanacearum in infected tissues by real-time PCR第85-88页
    4.5. Discussion第88-92页
Chapter 5 Exploration of some bioactivity related-mechanisms of Bacillus strains in their interaction withTomato plants or with Ralstonia solanacearum第92-112页
    5.1. Abstract第92页
    5.2. Introduction第92-95页
    5.3. Material and Methods第95-102页
        5.3.1. Bacterial strains & Chitosan preparation第95页
        5.3.2. In vitro detection of plant growth stimulation traits第95-96页
            5.3.2.1. Indole acetic acid production第95页
            5.3.2.2. Phosphate solubilization第95-96页
            5.3.2.3. Siderophores production第96页
            5.3.2.4. Hydrogen cyanide (HCN) production第96页
        5.3.3. Biofilm assays第96-97页
        5.3.4. Detection of antibacterial activity of bacillus culture filtrate第97-98页
        5.3.5. Transmission electron microscopy (TEM)第98页
        5.3.6. Inhibition of biofilm formation第98-99页
        5.3.7. Detection of antimicrobial peptide biosynthetic genes第99页
        5.3.8. Estimation of antibacterial related genes expression第99-100页
        5.3.9. Greenhouse trials第100-102页
        5.3.10. Statistical analysis第102页
    5.4. Results第102-108页
        5.4.1. PGP traits of Bacillus strains第102-103页
        5.4.2. Biofilm formation第103-104页
        5.4.3. Antibacterial activity of culture filtrate第104页
        5.4.4. Transmission electronic microscopy (TEM)第104-105页
        5.4.5. Inhibitory effect on Biofilm formation第105-106页
        5.4.6. Detection of lipopeptides biosynthetic genes第106页
        5.4.7. Quantification of expression levels of lipopeptides biosynthetic genes第106-107页
        5.4.8. Greenhouse experiments第107-108页
    5.5. Discussion第108-112页
General conclusions第112-113页
References第113-142页
List of Publications第142页

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