声明
CONTENTS
摘要
ABSTRACT
List of Abbreviations
CHAPTER:1 GENERAL INTRODUCTION AND LITERATURE REVIEW
1.2.1 Cultural controls
1.2.2 Insecticide cover sprays
1.2.3 Protein bait sprays
1.2.4 Male annihilation technique
1.2.5 Release of natural enemies
1.2.6 Sterile insect technique
1.3 RNAi-based SIT
1.3.1 Types of RNAi
1.3.2 Different RNAi pathways and their components
1.3.3 RNAi efficiency
1.3.4 Systematic properties of dsRNA
1.3.5 Mechanism of transmembrane channel-mediated uptake of dsRNA
1.3.6 Mechanism of endocytosis-mediated dsRNA uptake
1.4 Role of scavenger receptors in dsRNA uptake
1.4.1 Role of endocytic pathways in dsRNA efficiency
1.4.3 RNA-dependent and RNA polymerase
1.5 RNAi in insect pest control
1.5.1 Concentration of dsRNA
1.5.2 Nucleotide sequence
1.5.3 Length of the dsRNA fragment
1.5.4 Persistence of the silencing effect
1.5.5 Life stage of the target organism
1.6 Role of Nanoparticles in RNAi
1.6.1 Chitosan Nanoparticles
1.6.2 General characteristics of chitosan functional features Structure,physicochemical properties and source
1.6.3 Structure-property relationship
1.7 Cen line experiments
1.8 Thesis objectives
CHAPTER 2:The target genes for producing Bactrocera dorsalis sterile males based on RNAi
2.1 Introduction
2.2 Materials and Methods
2.2.1 Insects Rearing
2.2.2 The Experimental equipment
2.2.3 Commonly used antibiotics,medium and buffer preparation
2.2.4 Strains and plasmids
2.2.5 The main reagents and kits
2.2.6 Experimental methods
2.3 Results
2.3.1 Selection of testes specific genes
2.3.2 Toral RNA extraction from the B.dorsalis
2.3.3 Cloning of selected genes
2.3.4 Gene silence effects using RNAi
2.3.5 Screening of target genes for SIT based on male sterility
2.3.6 Effects of solely effect of selected genes on male sterility
2.3.7 Effects of combination of different genes on male sterility
2.3.8 Technique factors for SIT based on best dsRNA combination
2.3.9 Effect of RNAi on Spermatozoa and live/dead sperm of fruit flies
2.4 Discussion
Chapter 3 Delivery techniques of dsBoul/chitosan nano-particles in Bactrocera dorsalis
3.1 Introduction
3.2 Material Methods
3.2.1 Preparation of dsRNA
3.2.4 Preparation of dsRNA/chitosan with absorbing method at different pH
3.2.6 Effect of temperature on dsRNA/Chitosan with embedding method
3.2.8 Effect of screened dsRNA mass ratios on nano-particle size
3.2.9 Gene functioning of target gene dsRNA
3.3 Results
3.3.1 Effect of PH on dsRNA stability
3.3.2 Effect of dsRNA mass ratio on stability
3.3.3 Stability assay after preparation of dsRNA/Chitosan with embedding method
3.3.4 Stability assay after preparation of dsRNA/Chitosan with absorbing method
3.3.5 Particle Size
3.3.6 Effects of Nanoparticle/dsRNA effect on male sterility
3.3.7 Number of Spermatozoa and live/dead sperm assay
3.4 Discussion
Chapter 4 Effects of Chitosan/dsBoul treatment on sf9 cell line
4.1 Introduction
4.2 Materials and Methods
4.2.1 Chemical and Reagents
4.2.2 Cell Culture and Chitosan/dsBoul Treatment
4.2.3 Ultrastructural Morphological Investigation
4.2.4 Cell Cycle Analysis
4.2.5 Cell Apoptosis Detection by Double Staining Annexin V-FITC/PI Assay
4.2.8 Live/Dead Viability assay of Chitosan/dsBoul
4.3 Results
4.3.1 Cell cycle progression induced by Chitosan/dsBoul
4.3.2 Apoptosis induction by Chitosan/dsBoul
4.3.3 DNA Fragmentation induction by Chitosan/dsBoul
4.3.4 The expression of Cell cycle and apoptosis related protein
4.3.5 Influence of Chitosan/dsBoul on number of live/dead cells
4.3.6 Chitosan/dsBoul induce Nucleus,Mitochondria and Cell Membrane Ultra structure
4.4 Disscusion
5.SUMMARY
5.1 Innovations
5.2 Future perspectives
REFERENCES
ACKNOWLEDGEMENTS
华中农业大学;