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Study on the Mating Type, Chinese Pathotypes and Population Genetic Diversity of the Rice Blast Fungus (Magnaporthe Grisea) from Blast Nurseries in Hunan Province, China

DECLARATION第3-4页
CERTIFICATION第4-5页
DEDICATION第5-6页
ACKNOWLEDGEMENTS第6-8页
CONTENTS第8-18页
ABSTRACT第18页
Resume第21-23页
CHAPTER 1 LITERATURE REVIEW第23-54页
    1.1 Rice blast disease第23-31页
        1.1.1 Introduction第23-26页
            1.1.1.1 The economic problem第23页
            1.1.1.2 Distribution of the rice blast disease第23-24页
            1.1.1.3 Symptoms第24-26页
        1.1.2 The causal organism第26-31页
            1.1.2.1 Nomenclature of the rice blast pathogen第26页
            1.1.2.2 Morphology第26-27页
            1.1.2.3 Epidemiology第27-28页
                1.1.2.3.1 Infection第27页
                1.1.2.3.2 The infection cycle第27-28页
            1.1.2.4 Life cycle of the rice blast fungus第28-30页
                1.1.2.4.1 The asexual reproduction cycle第28-29页
                1.1.2.4.2 The sexual reproduction cycle第29-30页
            1.1.2.5 Host plants and host specialization of the blast第30-31页
    1.2 The perfect stage of the rice blast fungus第31-33页
        1.2.1 Mating types and fertility in Magnaporthe grisea第31-32页
        1.2.2 Mating type occurrence in China第32-33页
    1.3 Pathotype diversity in Magnaporthe grisea population第33-35页
        1.3.1 Pathotypes diversity of the rice blast fungus in china第34-35页
    1.4 Population genetic of fungi第35-43页
        1.4.1 Population variation and evolution第36页
        1.4.2 Population genetic analysis of Magnaporthe grisea第36-37页
        1.4.3 Genetic diversity of the blast fungus in China第37-38页
        1.4.4 Factors influencing the fungal genetic diversity第38-39页
        1.4.5 Molecular genetic tools used to study fungal populations第39-43页
            1.4.3.1 Random Amplified Polymorphic DNA (RAPD)第39-40页
            1.4.3.2 Restriction Fragment Length Polymorphism (RFLP) markers第40-41页
            1.4.3.3 Amplified Fragment Length Polymorphism (AFLPs)第41页
            1.4.3.4 Sequence Characterized Amplified Regions (scars)第41-42页
            1.4.3.5 Repetitive element-based polymerase chain reaction (rep-PCR) and endogenous repetitive DNA sequences第42页
            1.4.3.6 Iso-enzymatic markers第42-43页
    1.5 Objectives第43-44页
    REFERENCES第44-54页
CHAPTER 2 DISTRIBUTION OF MATING TYPE AND IDENTIFICATION OF PATHOTYPES IN MAGNAPORTHE GRISEA ISOLATES COLLECTED FROM BLAST NURSERIES IN HUNAN PROVINCE, CHINA第54-73页
    Abstract第54-55页
    2.1 Introduction第55页
    2.2 Materials and methods第55-61页
        2.2.1 Collection第55-57页
        2.2.2 Isolation and storage of the blast fungus第57页
        2.2.3 Standard isolates for mating types determination第57-58页
        2.2.4 Crossing method for mating types determination第58-59页
        2.2.5 Asci and ascospores formation第59页
        2.2.6 Pathogenicity assay and determination of the pathotype of each isolate第59页
        2.2.7 Coding of the pathotypes第59-61页
    2.3 Results第61-66页
        2.3.1 Isolation of the blast fungus Magnaporthe grisea第61页
        2.3.2 Distribution of the mating types and female isolates of Magnaporthe grisea in different collection sites第61-63页
        2.3.3 Crosses among fertile isolates of M.grisea from Hunan第63页
        2.3.4 Chinese race identification of isolates of Magnaporthe grisea from Hunan province第63-66页
        2.3.5 Relation between fertility and Chinese race of Magnaporthe grisea第66页
    2.4 Discussion第66-71页
        2.4.1 Diversity of the mating types of Magnaporthe grisea in blast nurseries in Hunan province第66-68页
        2.4.2 Diversity of the Chinese races of Magnaporthe grisea in blast nurseries in Hunan province第68-71页
    REFERENCES第71-73页
CHAPTER 3 POPULATION GENETIC DIVERSITY OF THE RICE BLAST FUNGUS MAGNAPORTHE GRISEA IN BLAST NURSERIES OF HUNAN PROVINCE第73-93页
    Abstract第73-74页
    3.1 Introduction第74-75页
    3.2 Materials and methods第75-79页
        3.2.1 Isolates of Magnaporthe grisea第75页
        3.2.2 Culture medium第75-76页
        3.2.3 Preparation of the fungal mycelium第76-77页
        3.2.4 Composition and preparation of buffers solutions第77页
        3.2.5 DNA extraction第77-78页
        3.2.6 Selection of RAPD primers and amplification reaction第78页
        3.2.7 Electrophoresis of the amplified products第78页
        3.2.8 Clustering analysis第78-79页
    3.3 RESULTS AND DISCUSSION第79-91页
        3.3.1 Results第79-89页
            3.3.1.1 Selection of primers第79页
            3.3.1.2 RAPD amplification第79-81页
            3.3.1.3 Genetic lineage and diversity of Magnaporthe grisea第81-89页
        3.3.2 Discussion第89-91页
            3.3.2.1 Population genetic diversity of the rice blast fungus in nurseries第89页
            3.3.2.2 Relation between mating types, fertility and pathotype of isolates第89-91页
    REFERENCES第91-93页
CHAPTER 4 Population Genetic Diversity of Fertile Magnaporthe grisea Isolates from Blast Nurseries in Hunan Province第93-110页
    Abstract第93页
    4.1 Introduction第93-94页
    4.2 Materials and methods第94-98页
        4.2.1 Fungi strains第170页
        4.2.2 Extraction of the genomic DNA第170页
        4.2.3 Scars primers第170-171页
        4.2.4 Scars-PCR amplification conditions第171页
        4.2.5 Analysis of SCAR molecular data and construction of the dendrogram第171-98页
    4.3 Results第98-107页
        4.3.1 Scars amplification第98-99页
        4.3.2 Lineage structure of fertile Magnaporthe grisea isolates第99-106页
        4.3.3 Discussion第106-107页
    References第107-110页
CHAPTER 5 GENERAL CONCLUSION第110-111页
Publications第111页

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