Arbuscular mycorrhizal fungi associated with common pteridophytes in Dujiangyan,southwest China |
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Authors: | Ying?Zhang Email author" target="_blank">Liang-Dong?GuoEmail author Run-Jin?Liu |
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Institution: | (1) Systematic Mycology and Lichenology Laboratory, Institute of Microbiology, Chinese Academy of Sciences, 100080 Beijing , P.R. China;(2) Department of Horticulture, , Laiyang Agricultural College, 265200 Laiyang, Shandong , P.R. China |
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Abstract: | The colonization and diversity of arbuscular mycorrhizal (AM) fungi associated with common pteridophytes were investigated in Dujiangyan, southwest China. Of the 34 species of ferns from 16 families collected, 31 were colonized by AM fungi. The mean percentage root length colonized was 15%, ranging from 0 to 47%. Nineteen species formed Paris-type and 10 intermediate-type AM. In two ferns, only rare intercellular non-septate hyphae or vesicles were observed in the roots and AM type could not be determined. Of the 40 AM fungal taxa belonging to five genera isolated from rooting-zone soils, 32 belonged to Glomus, five to Acaulospora, one to Archaeospora, one to Entrophospora, and one to Gigaspora. Acaulospora and Glomus were the dominant genera and Glomus versiforme was the most common species. The average AM spore density was 213 per 100 g air-dried soil and the average species richness was 3.7 AM species per soil sample. There was no correlation between spore density and percentage root length colonized by AM fungi. |
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Keywords: | Fern Mycorrhizal colonization Paris-type |
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