ABSTRACT Three new arbuscular mycorrhizal fungal species—Glomus ibericum, Septoglomus mediterraneum, and Funneliformis pilosus—are described and illustrated. In the field, the three species were associated with roots of Ammophila arenaria (Poaceae), Elymus farctus (Poaceae), Otanthus maritimus (Asteraceae), and Echinophora spinosa (Apiaceae) colonizing maritime dunes located along the Mediterranean coast in eastern Spain. The novelty of these species is supported by morphological, molecular, and phylogenetic analyses. Single-species cultures of S. mediterraneum and F. pilosus were obtained using Trifolium repens as a host plant, both forming arbuscular mycorrhizae, whereas single-species cultures from G. ibericum could not be obtained. Spores of G. ibericum usually occur in sporocarps, rarely singly in soil or inside roots. In contrast, S. mediterraneum only forms single spores in soil and F. pilosus occurs in sporocarps and singly in soil or inside roots. The respective small subunit, internal transcribed spacer, and large subunit (SSU-ITS1-5.8S-ITS2-LSU) nrDNA sequences placed the new species in the genera Glomus, Septoglomus, and Funneliformis, all of them separated from previously described species.

中文翻译：

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Glomus ibericum、Septoglomus mediterraneum和Funneliformis pilosus这三种丛枝菌根真菌新种

摘要描述和说明了三种新的丛枝菌根真菌物种——Glomus ibericum、Septoglomus mediterraneum 和 Funneliformis pilosus。在田间，这三个物种与在西班牙东部地中海沿岸的海洋沙丘上定居的 Ammophila arena (禾本科)、Elymus farctus (Poaceae)、Otanthus maritimus (菊科) 和 Echinophora spinosa (Apiaceae) 的根有关。这些物种的新颖性得到了形态学、分子和系统发育分析的支持。使用白三叶作为寄主植物获得了 S. mediterraneum 和 F. pilosus 的单种培养物，两者都形成了丛枝菌根，而无法获得 G. ibericum 的单种培养物。G. ibericum 的孢子通常出现在孢子果皮中，很少单独出现在土壤中或根内。相比之下，S。mediterraneum 只在土壤中形成单个孢子，而 F. pilosus 出现在孢子果中，单独出现在土壤或根内。各自的小亚基、内部转录间隔区和大亚基 (SSU-ITS1-5.8S-ITS2-LSU) nrDNA 序列将新物种置于 Glomus、Septoglomus 和 Funneliformis 属中，它们都与先前描述的物种分开。