生理整合对克隆植物抗虫害能力的影响

虫害是植物普遍遭受的胁迫，严重限制其生长和繁殖。克隆植物相连分株之间的生理整合（资源传输和共享）可以提高其抗胁迫的能力，因而可能提高克隆植物对虫害的抵抗能力。本项目以克隆植物野草莓（Fragaria vesca）和常见植食性螨虫棉红蜘蛛（Tetranychus cinnabarinus）为研究对象，运用实验生态学、生理生态学和稳定同位素等方法，研究生理整合对克隆植物耐受虫子采食能力的影响、生理整合对克隆植物对虫子采食的诱导性防御能力的影响，以及采食相关外源激素传输对克隆植物耐受虫子采食能力的影响，检验假说“生理整合可以提高克隆植物耐受虫子采食的能力”、“生理整合可以提高克隆植物对虫子采食的诱导性防御能力”和“采食相关外源激素传输能够提高克隆植物耐受虫子采食的能力”，揭示生理整合对克隆植物抗虫害能力的影响机制，为植物虫害防治提供科学指导。

Pest is common stress encountered by plants, and can significantly restrain their growth and reproduction. In clonal plants, physiological integration (resource translocation and sharing) between connected ramets can increase their stress resistance. Thus, physiological integration is likely to increase pest resistance in clonal plants. In this project, using methods of experimental ecology, ecophysiology and stable isotopes, I will conduct experiments with the clonal plant Fragaria vesca and the herbivore Tetranychus cinnabarinus to test the effect of physiological integration on resistance of clonal plants to mite herbivory, the effect of physiological integration on induced defense of clonal plants to mite herbivory, and the effect of herbivory-related exogenous hormone translocation on resistance of clonal plants to mite herbivory. We will test the hypotheses that physiological integration increases resistance of clonal plants to mite herbivory, physiological integration improves induced defense of clonal plants to mite herbivory, and herbivory-related exogenous hormone translocation increases resistance of clonal plants to mite herbivory. The aim of this project is to reveal the mechanism of physiological integration on pest resistance of clonal plants. The results will provide scientific guidance for pest control.