Effects of climate, distance, and a geographic barrier on ectomycorrhizal fugal communities in Japan: A comparison across Blakiston's Line
Effects of climate, distance, and a geographic barrier on ectomycorrhizal fugal communities in Japan: A comparison across Blakiston's Line
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DOI：
10.1016/j.funeco.2018.01.007
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发表时间：
2018-06-01
期刊：
影响因子：
2.9
通讯作者：
Nara, Kazuhide
中科院分区：
文献类型：
--
作者：
Miyamoto, Yumiko;Narimatsu, Maki;Nara, Kazuhide
许多研究已经认识到一个地理边界（即，在北海道和日本本州岛之间，津轻海峡可能是陆地物种移动的地理屏障。为了阐明这一地理边界是否适用于土壤微生物，我们研究了津轻海峡两岸外生菌根（EM）真菌的群落结构。我们从6个针叶林为主的森林采样266个土芯，并收集EM根真菌物种鉴定的基础上的内部转录间隔序列。我们发现，EM真菌群落主要受当代气候的影响，但不显着的地理障碍或空间距离。真菌OTU似乎在泛北极地区广泛分布，这表明在日本岛屿与大陆分离之前，它们具有长距离传播能力或古代迁徙。在这项研究和以前的研究中，气候的显著影响意味着EM真菌群落可能对未来的气候变化敏感。(C)2018 Elsevier Ltd和英国真菌学会。All rights reserved.
Numerous studies have recognized a biogeographic boundary (i.e., Blakiston's Line) between Hokkaido and Honshu, Japan, where the Tsugaru Strait probably functions as a geographic barrier to the movement of terrestrial species. To clarify if this biogeographic boundary applies to soil microbes, we examined community structures of ectomycorrhizal (EM) fungi across the Tsugaru Strait. We sampled 266 soil cores from six conifer-dominated forests, and collected EM roots for fungal species identification based on internal transcribed spacer sequences. We found that EM fungal communities were primarily influenced by contemporary climate, but not significantly by the geographic barrier or spatial distance. Fungal OTUs appeared to be widespread in the Holarctic regions, suggesting long-distance dispersal capabilities or ancient migrations before the separation of Japanese islands from the continent. The significant effects of climate in this and previous studies imply that EM fungal communities may be sensitive to future climate change. (C) 2018 Elsevier Ltd and British Mycological Society. All rights reserved.