Hiscox Jennifer, Savoury Melanie, Müller Carsten T, Lindahl Björn D, Rogers Hilary J, Boddy Lynne
School of Biosciences, Cardiff University, Sir Martin Evans Building, Cardiff CF10 3AX, UK.
Department of Soil and Environment, Swedish University of Agricultural Sciences, Uppsala, Sweden.
ISME J. 2015 Oct;9(10):2246-60. doi: 10.1038/ismej.2015.38. Epub 2015 Mar 20.
Assembly history of fungal communities has a crucial role in the decomposition of woody resources, and hence nutrient cycling and ecosystem function. However, it has not been clearly determined whether the fungal species that arrive first may, potentially, dictate the subsequent pathway of community development, that is, whether there is a priority effect at the species level. We used traditional culture-based techniques coupled with sequencing of amplified genetic markers to profile the fungal communities in beech (Fagus sylvatica) disks that had been pre-colonised separately with nine species from various stages of fungal succession. Clear differences in community composition were evident following pre-colonisation by different species with three distinct successor communities identified, indicating that individual species may have pivotal effects in driving assembly history. Priority effects may be linked to biochemical alteration of the resource and combative ability of the predecessor.
真菌群落的组装历史在木质资源的分解中起着关键作用，进而影响养分循环和生态系统功能。然而，目前尚未明确确定最早到达的真菌物种是否可能决定群落发展的后续路径，即在物种水平上是否存在优先效应。我们使用基于传统培养的技术，并结合扩增遗传标记的测序，来分析预先用来自真菌演替不同阶段的九个物种分别定殖的山毛榉（欧洲水青冈）圆盘内的真菌群落。在不同物种预先定殖后，群落组成存在明显差异，识别出了三个不同的后续群落，这表明单个物种在驱动组装历史方面可能具有关键作用。优先效应可能与资源的生化改变以及先驱物种的竞争能力有关。
