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Genetic structure of a population of the ectomycorrhizal fungus Russula vinosa in subtropical woodlands in southwest China

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Abstract

The genetic structure of a population of the ectomycorrhizal fungus Russula vinosa was analyzed using random amplified polymorphic DNA markers. Of 121 bands, 114 (94.2%) were polymorphic and there was a high genetic diversity (H=34.98) in this population. Each sporocarp represented a different genet and the genet size was no larger than 1 m. Pairwise sporocarps closer than 10 m had significantly higher genetic similarity. Second-order analysis indicated clumps with a radius of about 20 m in the whole population as well as in three genetic groups, i.e. simple matching similarity coefficients (S m ) 0.5–0.6, 0.6–0.7, and 0.7–0.8, respectively. The high-genetic-similarity group tended to have small clumps with high density, whereas the low-genetic-similarity group tended to have large clumps with low density. The spatial pattern analysis showed that the population mainly spread by short-distance spore dispersal rather than vegetative growth of dicaryophytic mycelia or long-distance spore dispersal.

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Acknowledgements

This work was supported by the State Key Basic Research and Development Plan of China Grant (G2000046802), the National Natural Science Foundation of China Grant (30070018), and the Chinese Academy of Sciences Grant (KSCX2-SW-101C). We are grateful to the Southwest Subalpine Botanical Garden, Chinese Academy of Sciences for providing climate data of the study site and to Dr. Xianming Gao, Dr. Canran Liu, and Dr. Xiaojun Du for providing species composition database of the site. We appreciate comments and suggestions by Prof. Jian Ni, Prof. John Cairney, Prof. Andrew Smith, as well as two anonymous reviewers, on an earlier version of the manuscript.

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Authors and Affiliations

  1. Laboratory of Quantitative Vegetation Ecology, Institute of Botany, Chinese Academy of Sciences, 100093, Beijing, China

    Yu Liang & Ke-ping Ma

  2. Systematic Mycology and Lichenology Laboratory, Institute of Microbiology, Chinese Academy of Sciences, 100080, Beijing, China

    Liang-dong Guo

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  1. Yu Liang
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  2. Liang-dong Guo
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  3. Ke-ping Ma
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Correspondence to Ke-ping Ma.

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Liang, Y., Guo, Ld. & Ma, Kp. Genetic structure of a population of the ectomycorrhizal fungus Russula vinosa in subtropical woodlands in southwest China. Mycorrhiza 14, 235–240 (2004). https://doi.org/10.1007/s00572-003-0260-7

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  • DOI: https://doi.org/10.1007/s00572-003-0260-7

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