Root Secreted Chemical Mediation in Beneficial Plant-Microbe Interactions

有益植物-微生物相互作用中的根分泌化学介导

• 批准号: 0814477
• 负责人: Harsh Bais
• 金额: $ 40万
• 依托单位: University of Delaware
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-08-15 至 2012-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0814477&HistoricalAwards=false
• 关键词: Root; Secreted; Chemical; Mediation; Beneficial

The rhizosphere is the critical interface for initiating both beneficial and harmful interactions between plants and microbes and it has become apparent that plants use root exudates to manipulate these interactions. This project will investigate root-secreted signals that serve as specific chemoattractants for Bacillus subtilis in the rhizosphere. The genus Bacillus has great potential use in agriculture, as its members are able to synthesize antimicrobial metabolites to ward off plant pathogens. While plant-associated bacterial chemical signals have been identified as activators of plant defences, plant metabolites that elicit rhizobacterial responses have yet to be characterized. The biochemical and genetic links identified and techniques developed in the course of this project should uncover new aspects of rhizosphere interactions and form a foundation for the further development of our understanding of both symbiotic and non-symbiotic plant-microbe associations. An outreach component will enrich the STEM (Science Technology Engineering and Mathematics) initiative in the Christina School District. A collaboration with science facilitators at Glasgow High School to strengthen the ecology components in the K-12 Delaware statewide recommended curricula, by creating an interactive environment between the classroom and the laboratory for K-12 students and science teachers.

根际是启动植物和微生物之间有益和有害相互作用的关键界面，并且很明显，植物利用根部分泌物来操纵这些相互作用。该项目将研究根部分泌的信号，这些信号作为根际枯草芽孢杆菌的特异性化学引诱剂。芽孢杆菌属在农业中具有巨大的应用潜力，因为其成员能够合成抗菌代谢物来抵御植物病原体。虽然与植物相关的细菌化学信号已被确定为植物防御的激活剂，但引起根际细菌反应的植物代谢物尚未得到表征。该项目过程中确定的生化和遗传联系以及开发的技术应该揭示根际相互作用的新方面，并为进一步发展我们对共生和非共生植物-微生物关联的理解奠定基础。外展活动将丰富克里斯蒂娜学区的 STEM（科学技术工程和数学）计划。与格拉斯哥高中的科学促进者合作，通过为 K-12 学生和科学教师创建课堂和实验室之间的互动环境，加强 K-12 特拉华州全州推荐课程中的生态部分。