Plant-Microbe Interactions, Department of Biology, Faculty of Science, Utrecht University, Padualaan 8, Utrecht, 3584 CH, The Netherlands.
Plant Soil Interactions, Division Agroecology and Environment, Reckenholzstrasse 191, Agroscope, Zürich, CH- 8046, Switzerland.
Mycorrhiza. 2024 Nov;34(5-6):517-524. doi: 10.1007/s00572-024-01167-3. Epub 2024 Sep 9.
Arbuscular mycorrhizal (AM) fungi not only play a crucial role in acquiring nutrients for plants but also serve as a habitat for soil microbes. Recent studies observed that AM fungal hyphae are colonized by specific bacterial communities. However, so far it has not been explored whether fungal hyphae and mycorrhizal networks also harbor specific communities of protists, a key group of microbes in the soil microbiome. Here, we characterized protist communities in soil in a compartment with plant roots and on hyphae collected from hyphal compartments without plant roots. We detected specific protist communities on fungal hyphae. Fourteen protistan amplicon sequences variants (ASVs) were significantly associated with fungal hyphae, half of which belonged to the Cercozoa group. This research, for the first-time detected specific protist ASVs directly associated with abundant AM fungus hyphae, highlighting the complexity of the hyphal food web.
丛枝菌根 (AM) 真菌不仅在为植物获取养分方面发挥着关键作用，还是土壤微生物的栖息地。最近的研究观察到 AM 真菌菌丝被特定的细菌群落定殖。然而，到目前为止，还没有探索真菌菌丝和菌根网络是否也拥有特定的原生生物群落，而原生生物是土壤微生物组中的一个关键微生物群。在这里，我们对植物根系所在的土壤隔间中的原生生物群落以及从没有植物根系的菌丝隔间中收集的菌丝上的原生生物群落进行了特征描述。我们在真菌菌丝上检测到了特定的原生生物群落。有 14 个原生生物扩增子序列变异体 (ASV) 与真菌菌丝显著相关，其中一半属于肉足虫门。这项研究首次直接检测到与丰富的 AM 真菌菌丝直接相关的特定原生生物 ASV，突出了菌丝食物网的复杂性。
