Dependence of endophytic fungus - grass symbioses on land-use intensity

内生真菌-草共生对土地利用强度的依赖性

• 批准号: 252061897
• 负责人: Professor Dr. Jochen Krauss
• 金额: --
• 依托单位: Julius-von-Sachs-Institut für Biowissenschaften
• 依托单位国家: 德国
• 项目类别: Infrastructure Priority Programmes
• 财政年份: 2014
• 资助国家: 德国
• 起止时间: 2013-12-31 至 2021-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/252061897?language=en
• 关键词: Dependence; endophytic; fungus; grass; symbioses

In this project we focus on ecological and potentially economic effects of systemic endophytic fungi of the genus Epichloë on alkaloid production, herbivore toxicity, temporal dynamics and biotic interactions between species along a land-use intensity gradient. With our study we want to address the following research questions:1) Which pathway alkaloids are produced by the endophyte-grass associations sampled on 150 grasslands across Germany?2) Does land-use intensity affect endophyte frequencies and alkaloid concentrations between years?3) Do endophyte-grass symbioses in real world ecosystems show the same temporal dynamics in endophyte growth and alkaloid production than agriculturally used grass species under common garden conditions?4) Is the assemblage of foliar fungal endophytes in grass affected by land-use intensity?5) Do systemic fungal endophytes affect foliar fungal endophyte assemblages in grass species?6) Can we predict causes and risks for alkaloid concentrations above the toxicity levels for livestock?

在这个项目中，我们专注于生态和潜在的经济影响的属Epichloë系统内生真菌的生物碱生产，草食动物的毒性，时间动态和物种之间的生物相互作用沿着土地利用强度梯度。通过我们的研究，我们希望解决以下研究问题：1）在德国的150个草地上取样的内生菌-草协会产生哪种途径的生物碱？2)土地利用强度是否影响内生菌的频率和生物碱浓度之间的年份？3)在真实的世界生态系统中，内生菌-草共生体在内生菌生长和生物碱产生方面是否表现出与普通园林条件下农业用草物种相同的时间动态？4)草地内生真菌的聚集性是否受土地利用强度的影响？5)系统性内生真菌是否影响禾本科植物叶片内生真菌的聚集？6)我们能否预测生物碱浓度高于牲畜毒性水平的原因和风险？