Fungal endophytes in dicotyledonous neotropical trees: patterns of abundance and diversity
Fungal endophytes in dicotyledonous neotropical trees: patterns of abundance and diversity
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DOI：
10.1017/s0953756201004956
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发表时间：
2001-12-01
影响因子：
--
通讯作者：
Gilbert, GS
中科院分区：
文献类型：
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作者：
Arnold, AE;Maynard, Z;Gilbert, GS
真菌内生菌已被发现在每一个植物物种检查的日期，似乎是重要的，但在很大程度上未量化，真菌生物多样性的组成部分。热带森林树木中的内生菌尤其鲜为人知，因为它们的丰度和多样性被认为是最大的。在这里，我们探讨内生菌的发生在一个广泛的多样性的木本，被子植物类群在低地，潮湿的热带森林在巴拿马中部。我们使用相似性指数，以评估主机的偏好和空间异质性的内生菌与两个共同发生的，但远亲，林下树种，在两个网站的森林，并评估指数的实用性的基础上出现的频率形态种（Morisita角指数）和存在-不存在的数据（索伦森指数）。我们建议，我们的了解真菌的多样性，将提高通过探索生态模式的内生菌发生在宿主物种，并讨论热带内生菌代表的真菌生物多样性的比例评估方法。
Fungal endophytes have been found in every plant species examined to date and appear to be important, but largely unquantified, components of fungal biodiversity. Endophytes are especially little known in tropical forest trees, where their abundance and diversity are thought to be greatest. Here, we explore the occurrence of endophytes in a broad diversity of woody, angiospermous taxa in a lowland, moist tropical forest in central Panama. We use similarity indices to assess host preference and spatial heterogeneity of endophytes associated with two co-occurring but distantly related, understorey tree species in two sites of that forest, and assess the utility of indices based on frequencies of morphospecies occurrence (Morisita-Horn index) and on presence-absence data (Sorensen's index). We suggest that our understanding of fungal diversity will be enhanced by exploring ecological patterns underlying endophyte occurrence in host species, and discuss methods for assessing the proportion of fungal biodiversity represented by tropical endophytes.