Pioneer dwarf willow may facilitate tree succession by providing late colonizers with compatible ectomycorrhizal fungi in a primary successional volcanic desert
Pioneer dwarf willow may facilitate tree succession by providing late colonizers with compatible ectomycorrhizal fungi in a primary successional volcanic desert
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DOI：
10.1111/j.1469-8137.2006.01744.x
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发表时间：
2006-01-01
期刊：
影响因子：
9.4
通讯作者：
Nara, Kazuhide
中科院分区：
文献类型：
--
作者：
Nara, Kazuhide
为了进一步了解外生菌根（ECM）真菌的树木演替过程中的贡献，自然建立模式的次生定殖主机和ECM真菌群落进行了调查，特别是参考先锋host.In火山沙漠上的富士山，日本，植被稀疏分布，类似岛屿在火山渣海。在研究区域的509个植被岛屿中，有161个岛屿包含了第一个入侵ECM的宿主物种-沙柳。对次生定殖树种与柳属植物的空间一致性进行了分析，并采用分子生物学鉴定方法对次生定殖树种的ECM真菌群落进行了研究，分别发现岳桦39株和日本落叶松26株。这些人无一例外，都有沙柳的陪伴。这些树种的ECM真菌群落与沙柳属植物的相似性较高，且以能与两个或两个以上植物科相容的多面手为主，在该荒漠中，可利用的ECM繁殖体有限。先锋柳可能有助于树木演替提供兼容ECM真菌共生体相邻的晚期殖民者。
To advance understanding of the contribution of ectomycorrhizal (ECM) fungi to tree successional processes, natural establishment patterns of secondary colonizing hosts and their ECM fungal communities were investigated with special reference to pioneer hosts.In the volcanic desert on Mount Fuji, Japan, vegetation is sparsely distributed, resembling islands in a sea of scoria. Of 509 vegetation islands in the research area, 161 contained Salix reinii (Salix), the first colonizing ECM host species. The spatial coincidence between secondary colonizing timber species and Salix was analysed, and ECM fungal communities were studied using molecular identification methods.I found 39 and 26 individuals of Betula ermanii and Larix kaempferi, respectively. Without exception, these individuals were all accompanied by Salix. The ECM fungal communities of these timber species showed high similarity to that of Salix and were dominated by generalists that were compatible with two or more plant families.In this desert, available ECM propagules are limited. Pioneer Salix may contribute to tree succession by providing adjacent late colonizers with compatible ECM fungal symbionts.