An investigation of nematode biological control potential in rice under oxic and anoxic soil environments

缺氧和缺氧土壤环境下水稻线虫生物防治潜力研究

• 批准号: 13901234
• 负责人: Professor Dr. Richard A. Sikora
• 金额: --
• 依托单位: Abteilung Pflanzenkrankheiten und Pflanzenschutz
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2006
• 资助国家: 德国
• 起止时间: 2005-12-31 至 2010-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/13901234?language=en
• 关键词: investigation; nematode; biological; control; potential

Studies on the tripartite interaction between a soilborne plant pathogen, its microbial antagonist(s), and the host plant have been largely restricted to aerobic agricultural systems, while there is no knowledge about such interrelationships in the anoxic environment surrounding a rice root. Understanding this unique environment is essential for assessing the capacity to implement biological control of root pathogens in rice, the globally dominant staple food crop. The primary goals of this project are to understand the effect of anoxic-oxic soil environments on i) the population dynamics of a bacteria (Bacillus megaterium) introduced for biocontrol of a plant-parasitic nematode (Meloidogyne graminicola), and ii) on the range of possible interactions between the bacteria and the nematode. This is the first investigation of such parasite-antagonist interactions under oxic/anoxic conditions, and will provide a model for root pathogen/parasite biocontrol under soil water environments unique to rice. The research utilizes a synergistic combination of phytopathological, microbiological and molecular methods to investigate such pathogen-antagonist interactions.

关于土壤植物病原体，其微生物拮抗剂和宿主植物之间三方相互作用的研究在很大程度上限于有氧农业系统，而在围绕水稻根的缺氧环境中，对这种相互关系的了解不了解。了解这种独特的环境对于评估在全球占主导地位的粮食作物大米中实施生物控制生物控制的能力至关重要。 该项目的主要目标是了解缺氧性土壤环境对i）针对植物 - 寄生虫线虫（Meloidogynegogynicnicola）的生物防治引入的细菌的种群动力学（巨芽孢杆菌）和II的影响。细菌与线虫之间可能的相互作用。这是对这种寄生虫 - 抗氧化抗合性条件下这种寄生虫 - 抗氧化剂相互作用的首次研究，并将为水稻独有的土壤水环境下提供根病原/寄生虫生物防治的模型。该研究利用植物病理学，微生物和分子方法的协同组合来研究这种病原体 - 抗抗衡素的相互作用。