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Arbuscular mycorrhizal fungi associated with common pteridophytes in Dujiangyan, southwest 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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Acknowledgements

The authors are grateful to Prof. S. E. Smith for a pre-submission review of the manuscript. We would like to thank Dr. X-M. Gao, Institute of Botany, CAS, Beijing, China, for help in the identification of the ferns. Thanks also extend to HUAXI Sub-alpine Arboretum, CAS, for help with sampling. This work was supported by a State Key Basic Research and Development Plan of China grant (G2000046802), a National Natural Science Foundation of China grant (30070018), and a Chinese Academy of Sciences grant (KSCX2-SW-101C).

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Correspondence to Liang-Dong Guo.

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Zhang, Y., Guo, LD. & Liu, RJ. Arbuscular mycorrhizal fungi associated with common pteridophytes in Dujiangyan, southwest China. Mycorrhiza 14, 25–30 (2004). https://doi.org/10.1007/s00572-003-0272-3

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