| 摘要 | 第1-9页 |
| Abstract | 第9-11页 |
| Chapter 1 Introduction | 第11-38页 |
| ·Whole Plant Level | 第11-16页 |
| ·Chemical signaling | 第12-16页 |
| ·Molecular Level | 第16-34页 |
| ·Perception of drought stress | 第17-22页 |
| ·ABA dependent signaling in drought stress | 第22-33页 |
| ·ABA biosynthesis and catabolism | 第22-24页 |
| ·The ABA signaling transduction | 第24-33页 |
| ·ABA receptors | 第24-26页 |
| ·Early ABA signaling | 第26-30页 |
| ·Transcriptional regulation | 第30-32页 |
| ·Posttranscriptional regulation | 第32-33页 |
| ·ABA-independent signaling in drought stress | 第33-34页 |
| ·Metabolic network in drought stress response | 第34-36页 |
| ·Research background and purpose | 第36-38页 |
| Chapter 2 Soil water threshold range of chemical signals and drought tolerance was mediated by ROS homeostasis in winter wheat during progressive soil drying | 第38-59页 |
| ·Introduction | 第38-40页 |
| ·Materials and Methods | 第40-44页 |
| ·Plant materials and growth conditions | 第40页 |
| ·Water treatments | 第40-41页 |
| ·Harvest | 第41页 |
| ·Gas exchange and relative leaf water content measurement | 第41页 |
| ·Comparison of drought tolerance among cultivars | 第41-42页 |
| ·ROS concentration | 第42页 |
| ·Enzyme assays | 第42-43页 |
| ·AsA and GSH content | 第43页 |
| ·Statistical analysis | 第43-44页 |
| ·Results | 第44-54页 |
| ·Soil water relations, stomatal conductance and leaf relative water content | 第44-50页 |
| ·ROS, enzyme and non-enzyme antioxidants during progressive soil water drying | 第50-52页 |
| ·Drought tolerance | 第52-54页 |
| ·Discussion | 第54-59页 |
| Chapter 3 A novel pathway regulate ABA biosynthesis and ABA signaling genes under osmotic stress condition | 第59-90页 |
| ·Introduction | 第59-62页 |
| ·Material and Methods | 第62-65页 |
| ·Isolation of red1 Mutant | 第62-63页 |
| ·Plant Material and Growth Conditions | 第63页 |
| ·Physiological Assay | 第63-64页 |
| ·Genetic Mapping and Complementation | 第64页 |
| ·RNA Analysis | 第64-65页 |
| ·Microarray Analysis | 第65页 |
| ·Result | 第65-85页 |
| ·Isolation of Arabidopsis mutants with altered ABA accumulation and reduced NCED3 expression | 第65-67页 |
| ·Reduced stress-responsive gene regulation by Cold, ABA, osmotic stress and salt in red1 mutant | 第67-68页 |
| ·The red1 Mutation Enhances ABA and Osmotic Stress Sensitivity in Seeds and Vegetative Tissues | 第68-73页 |
| ·red1 plants show higher transpiration rates and reduced drought resistance | 第73-74页 |
| ·Map-based cloning of the RED1/BDG gene | 第74-77页 |
| ·red1 is allele of BDG | 第74-77页 |
| ·BDG1 expression is induced by osmotic stress and ABA treatments | 第77-79页 |
| ·BDG1 positive regulates the expression of ABA biosynthesis genes under osmotic stress treatment | 第79-80页 |
| ·BDG1 regulate the expression of ABA signaling genes | 第80-82页 |
| ·Cuticle formation regulate ABA biosynthesis genes and ABA signaling genes under osmotic stress treatment | 第82-85页 |
| ·Discussion | 第85-90页 |
| References | 第90-117页 |
| 致谢 | 第117-118页 |
| 作者简介 | 第118页 |
