Mycorrhizal associations in woody plant species at the Mt. Usu volcano, Japan
Mycorrhizal associations in woody plant species at the Mt. Usu volcano, Japan
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DOI：
10.1007/s00572-006-0097-y
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发表时间：
2007-01
期刊：
影响因子：
3.9
通讯作者：
Keisuke Obase;Y. Tamai;T. Yajima;Toshizumi Miyamoto
中科院分区：
文献类型：
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作者：
Keisuke Obase;Y. Tamai;T. Yajima;Toshizumi Miyamoto
我们调查了在被火山喷发破坏的地区，外生菌根(ECM)和丛枝菌根(AM)真菌以及先锋木本植物之间的关系。2000年，美国州立大学，日本。我们在研究地点观察到8种木本植物，其中大部分与ECM和/或AM真菌有关。特别是，优势木本植物物种大叶杨、Salixhulteniivar.angustifoliaandSalixsachalinensiswere一直与环境真菌联系在一起，与AM真菌不稳定地联系在一起。我们在每个ECM寄主的根中发现一到六种形态类型，平均在每株幼苗的根中发现两种形态类型，表明ECM真菌多样性较低。ECM在根尖的定殖率为17%~42%。通过形态分型和分子分析，共鉴定出15株ECM真菌。不同寄主的ECM真菌差异较大。而漆树科植物紫胶树、羊栖菜、羊栖菜等植物的相对定殖率较高，占每种植物根部ECM定殖量的大部分。这些ECM真菌可能对建立先锋木本植物物种和进一步恢复山上的植被具有重要意义。USU火山。
We investigated the association between ectomycorrhizal (ECM) and arbuscular mycorrhizal (AM) fungi and pioneer woody plant species in areas devastated by the eruption of Mt. Usu, Japan, in 2000. We observed eight woody plant species at the research site, most of which were associated with ECM and/or AM fungi. In particular, dominant woody plant speciesPopulusmaximowiczii,Salixhulteniivar.angustifoliaandSalixsachalinensiswere consistently associated with ECM fungi and erratically associated with AM fungi. We found one to six morphotypes in the roots of each ECM host and, on average, two in the roots of each seedling, indicating low ECM fungal diversity. ECM colonization ranged from 17 to 42% of root tips. Using morphotyping and molecular analyses, 15 ECM fungi were identified. ECM fungi differed greatly between hosts. However,Laccaria amethystea,Hebelomamesophaeum,Thelephoraterrestrisand other Thelephoraceae had high relative colonization, constituting the majority of the ECM colonization in the roots of each plant species. These ECM fungi may be important for the establishment of pioneer woody plant species and further revegetation at Mt. Usu volcano.