Plant-Soil Feedback / Microbial Ecology: disentangling negative and positive soil feedback effects

植物-土壤反馈/微生物生态学：解开负反馈和正土壤反馈效应

• 批准号: 172102561
• 负责人: Professorin Dr. Gerlinde B. de Deyn
• 金额: --
• 依托单位: Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)
• 依托单位国家: 德国
• 项目类别: Research Units
• 财政年份: 2010
• 资助国家: 德国
• 起止时间: 2009-12-31 至 2017-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/172102561?language=en
• 关键词: Plant; Soil; Feedback; Microbial; Ecology

Plant diversity can promote several ecosystem functions, but the underlying role of plant–soil organism interactions in the promotion of these ecosystem services remains poorly investigated. The aim of the present proposal is to investigate the role of soil microorganisms in affecting plant growth responses along a plant diversity gradient. Firstly, we will investigate how specific soil microbial communities of pathogens, symbiotic mutualists and decomposers are structured across plant communities (composed of 1 to 60 species) using molecular, biochemical, morphological and functional identification of soil bacteria, fungi and nematodes. Secondly, feedback effects of plant community-specific soil communities on the productivity, structure and dynamics of plant monocultures and mixtures will be studied. The measurements and experiments will complement those of subprojects 2 and 4, and the results will be complementary to studies of plant–plant interactions, all together enhancing our understanding on the role of plant–soil organism interactions in modifying plant species abundance distributions and dynamics, as well as the stability of primary productivity over time.

植物多样性可以促进多种生态系统功能，但植物-土壤生物相互作用在促进这些生态系统服务方面的潜在作用仍然研究不足。本提案的目的是调查土壤微生物在影响植物生长反应沿着植物多样性梯度的作用。首先，我们将研究如何特定的土壤微生物群落的病原体，共生互惠和分解植物群落（由1至60个物种组成）的结构，利用分子，生物化学，形态和功能鉴定土壤细菌，真菌和线虫。其次，将研究植物群落特定土壤群落对植物单作和混作的生产力、结构和动态的反馈效应。测量和实验将补充次级项目2和4的测量和实验，其结果将补充植物-植物相互作用的研究，所有这些都将加强我们对植物-土壤生物相互作用在改变植物物种丰度分布和动态以及初级生产力随时间的稳定性方面的作用的理解。