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罗非鱼集约化养殖池塘中nifh-基因编码固氮细菌的群落结构多样性的鉴定和分类

ABSTRACT第9-11页
摘要第12-14页
List of Abbreviations and Symbols第14-17页
Chapter 1 Introduction and Literature Review第17-25页
    1.1 Introduction第17-18页
    1.2 Nitrogen fixation第18-23页
    1.3 Hypothesis第23页
    1.4 Objectives第23-24页
        1.4.1 Major Objective第23页
        1.4.2 Specific Objective第23-24页
    1.5 Outline of the thesis第24-25页
Chapter 2 Identification and characterization of pond soil sediment microbial communities第25-47页
    2.1 Introduction第25-26页
        2.1.1 Study area第26页
    2.2 Materials and Methods第26-31页
        2.2.1 Materials第26-27页
            2.2.1.2 Chemicals/Reagents used in DNA analysis第26-27页
        2.2.2 Methods第27-31页
            2.2.2.1 Sampling procedure第27-28页
            2.2.2.2 DNA extraction第28页
            2.2.2.3 PCR第28-29页
            2.2.2.4 Amplification and Pyrosequencing第29页
            2.2.2.5 Determining bacterial communities in the ponds第29-30页
            2.2.2.6 Data and Statistical Analysis第30-31页
    2.3 Results第31-41页
        2.3.1 Detection of nifH-gene encoding N_2-fixation microbes第31页
        2.3.2 Microbial diversities and dominant bacterial communities第31-32页
        2.3.3 Taxonomic classification第32-36页
        2.3.4 Operational taxonomic unit (OTU) distributions第36-39页
            2.3.4.1 Microbial species richness estimations第37-39页
        2.3.5 Hierarchical cluster analysis test (Heat Maps)第39-41页
    2.4 Discussion第41-45页
    2.5 Conclusions第45-47页
Chapter 3 Identification and characterization of pond water column microbial communities第47-69页
    3.1 Introduction第47-49页
        3.1.2 Study area第49页
    3.2 Materials and Methods第49-52页
        3.2.1 Materials第49页
            3.2.1.2 Reagents /Chemicals used in DNA analysis第49页
        3.2.2 Methods第49-52页
            3.2.2.1 Sampling procedure第49页
            3.2.2.2 DNA extraction第49-50页
            3.2.2.3 PCR第50页
            3.2.2.4 Amplification and Pyrosequencing第50-51页
            3.2.2.5 Determining bacteria communities within the ponds第51页
            3.2.2.6 Data and Statistical Analysis第51-52页
    3.3 Results第52-64页
        3.3.1 Detection of nifH-gene encoding N_2-fixation microbes第52页
        3.3.2 Microbial diversities and dominant bacterial communities第52-53页
        3.3.3 Taxonomic classification第53-57页
            3.3.3.1 Microbial class distributions第55-56页
            3.3.3.2 Microbial genus distributions第56-57页
        3.3.4 Operational taxonomic unit (OTU)distributions第57-59页
            3.3.4.1 Microbial Estimations第58-59页
        3.3.5 Hierarchical cluster analysis test (Heat Maps)第59-62页
        3.3.6 Linear Discriminant analysis (LDA) effect size (LEfSe)第62-64页
    3.4 Discussion第64-67页
    3.5 Conclusion第67-69页
Chapter 4 Pond soil-sediment nutrient composition & physiochemical characteristics第69-83页
    4.1 Introduction第69-70页
        4.1.2 Study area第70页
    4.2 Materials and Methods第70-75页
        4.2.1 Materials第70-71页
            4.2.1.2 Assets and equipments第70页
            4.2.1.3 Chemicals/Reagents第70-71页
        4.2.2 Methods第71-75页
            4.2.2.1 Sampling procedure第71-72页
            4.2.2.2 Physiochemical analyses tests (DO, SD, ORP, pH and T(℃))第72页
            4.2.2.3 Kjeldahl method for determining sediment TN第72页
            4.2.2.4 TP UV Spectrophotometer screening第72-73页
            4.2.2.5 Titrimetric method (Organic Matter Test)第73页
            4.2.2.6 Nessler Colorimeter Assay (NH_3-N test)第73页
            4.2.2.7 Spectrophotometric method (NO_2-N Test)第73-74页
            4.2.2.8 Trophic level /Comprehensive nutrition state index test第74页
            4.2.2.9 Data and Statistical Analysis第74-75页
    4.3 Results第75-79页
        4.3.1 The physiochemical conditions第75-76页
        4.3.2 Nutrient composition第76-77页
        4.3.3 Comprehensive nutrition state index第77页
        4.3.4 Redundancy Analysis tests (RDA)第77-79页
    4.4 Discussion第79-82页
    4.5 Conclusion第82-83页
Chapter 5 Pond water column nutrient composition and physiochemical characteristics第83-97页
    5.1 Introduction第83-84页
        5.1.2 Study area第84页
    5.2 Materials and Methods第84-88页
        5.2.1 Materials第84页
            5.2.1.2 Chemicals/Reagents第84页
        5.2.2 Methods第84-88页
            5.2.2.1 Sampling procedure第84-85页
            5.2.2.2 Physiochemical analyses tests (DO, SD, ORP, pH and T(℃)第85页
            5.2.2.3 UV Spectrophotometry determination method for TN第85-86页
            5.2.2.4 UV Spectrophotometry screening method for TP第86页
            5.2.2.5 Permanganate Test (COD determination)第86页
            5.2.2.6 Total Organic Carbon (TOC-test)第86页
            5.2.2.7 Nessler Colorimeter Assay (NH_3-N test)第86-87页
            5.2.2.8 Ion chromatography analysis (NO_3~- and NO_2~- tests)第87页
            5.2.2.9 Trophic level /Comprehensive nutrition state index test第87页
            5.2.2.10 Data and Statistical Analysis第87-88页
    5.3 Results第88-93页
        5.3.1 The physiochemical conditions第88-89页
        5.3.2 Nutrient composition第89-90页
        5.3.3 Comprehensive nutrition state index第90-92页
        5.3.4 Redundancy Analysis tests (RDA)第92-93页
    5.4 Discussion第93-95页
    5.5 Conclusions第95-97页
General Conclusion第97-99页
References第99-105页
APPENDIX第105-111页
    1.0 Study area第105-106页
    2.0 Research facilities第106-107页
    3.0 Experimental Research design第107-108页
    4.0 Research Schedule第108-111页
ACKNOWLEDGEMENTS第111-113页
Conferences attended and Publications第113-114页

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