Mycorrhizal associations of Salix repens L. communities in succession of dune ecosystems. I. Above-ground and below-ground views of ectomycorrhizal fungi in relation to soil chemistry
Mycorrhizal associations of Salix repens L. communities in succession of dune ecosystems. I. Above-ground and below-ground views of ectomycorrhizal fungi in relation to soil chemistry
复制标题
沙丘生态系统演替中白柳群落的菌根联合体。
DOI：
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发表时间：
1999
期刊：
影响因子：
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通讯作者：
T. Kuyper
中科院分区：
文献类型：
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作者：
E. V. D. Heijden;F. W. Vries;T. Kuyper
通过对生长在不同环境条件下的16个垂柳林分的外生菌根(ECM)孢子果和外生菌根的重复采样，研究了不同环境条件下生长的16个林分的外生菌根(ECM)群落多样性，以评估地上和地下真菌分类群的可能一致性。地上和地下景观也与土壤化学有关。共发现ECM真菌12属78个分类群的孢子果。发现的大多数物种，特别是Cortinariaceae的物种，都是杨柳科特有的寄主。基于真菌种类的典型对应分析(CCA)表明，只有pH和速效磷浓度对解释的差异有显着贡献。基于真菌属的CCA表明，pH和水分对解释的变化有显著贡献。在两个采样日，共识别出15种不同的细胞外基质形态，其形态组成也不同。基于形态组成的CCA分析结果因取样日期不同而不同。ECM孢子果和根尖的数量(在两个采样日)均不相关。在这两个采样日，地上物种多样性(种和属)与地下形态类型多样性之间也没有相关性。因此，地上ECM真菌的多样性或丰度都不能用来评估地下ECM的多样性或丰度。地下参数在不同采样日期缺乏相关性，表明差异很大。讨论了时间变化的原因。强调了调查ECM社区地上和地下变异性的重要性。
The diversity of ectomycorrhizal (EcM) communities in 16 stands of Salix repens L. growing under a variety of environmental conditions was studied by repeated sampling of EcM sporocarps and ectomycorrhizas, to assess the possible correspondence between above- and below-ground views of fungal taxa. Above- and below-ground views were also related to soil chemistry. Sporocarps of 78 taxa of EcM fungi belonging to 12 genera were found. The majority of the species found, especially those of the Cortinariaceae, were host-specific for Salicaceae. Canonical correspondence analysis (CCA) based on fungal species showed that only pH and the concentration of available phosphorus significantly contributed to the variation explained. CCA based on fungal genera indicated that pH and moisture significantly contributed to the variation explained. Fifteen different EcM morphotypes were recognized and morphotype composition was different on two sampling dates. CCA based on morphotype composition yielded different results depending on sampling date. The numbers of EcM sporocarps and root tips were not correlated (on either sampling date). Diversity above ground (species and genus) was also not correlated with morphotype diversity below ground on either sampling date. Therefore, neither diversity nor abundance of above-ground EcM fungi can be used to assess below-ground EcM diversity or abundance. Lack of correlation in below-ground parameters on different sampling dates indicates substantial variation. Causes for temporal variation are discussed. The importance of investigating both above- and below-ground variability in EcM communities is stressed.