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  • Structure and species composition of ectomycorrhizal fungal communities colonizing seedlings and adult trees of Pinus montezumae in Mexican neotropical forests

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    Author(s)
    Reverchon, Frederique
    del Pilar Ortega-Larrocea, Maria
    Bonilla-Rosso, German
    Perez-Moreno, Jesus
    Griffith University Author(s)
    Reverchon, Frederique
    Year published
    2012
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    Abstract
    Mexico is a center of diversity for pines, but few studies have examined the ectomycorrhizal (ECM) fungal communities associated with pines in this country. We investigated the ECM communities associated with Pinus montezumae seedlings and mature trees in neotropical forests of central Mexico and compared their structure and species composition. Root tips were sampled on both planted seedlings and naturally occurring adult trees. A total of 42 ECM operational taxonomic units (OTUs) was found on P. montezumae. Diversity and similarity indices showed that community structure was similar for both plant growth stages, but ...
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    Mexico is a center of diversity for pines, but few studies have examined the ectomycorrhizal (ECM) fungal communities associated with pines in this country. We investigated the ECM communities associated with Pinus montezumae seedlings and mature trees in neotropical forests of central Mexico and compared their structure and species composition. Root tips were sampled on both planted seedlings and naturally occurring adult trees. A total of 42 ECM operational taxonomic units (OTUs) was found on P. montezumae. Diversity and similarity indices showed that community structure was similar for both plant growth stages, but phylogenetic diversity and Chao-estimated richness were higher for seedlings. Species composition differed between communities. The dominant OTUs belonged to the families Atheliaceae, Cortinariaceae, and Sebacinaceae, although different taxa appeared to colonize seedlings and adults. Only 12 OTUs were shared between seedlings and adults, which suggests that ECM fungi which colonize seedlings are still not fully incorporated into mycelial networks and that ECM taxa colonizing young individuals of P. montezumae are likely to come from fungal propagules. Intra-generic diversity could be an insurance mechanism to maintain forest productivity under stressed conditions. This is the first report describing the abundance of Atheliaceae in tree roots in neotropical ecosystems.
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    Journal Title
    FEMS Microbiology Ecology
    Volume
    80
    Issue
    2
    DOI
    https://doi.org/10.1111/j.1574-6941.2012.01314.x
    Copyright Statement
    © 2012 Federation of European Microbiological Societies. Published by Blackwell Publishing Ltd. This is the author-manuscript version of the paper. Reproduced in accordance with the copyright policy of the publisher.The definitive version is available at http://onlinelibrary.wiley.com/
    Subject
    Environmental sciences
    Biological sciences
    Community ecology (excl. invasive species ecology)
    Biomedical and clinical sciences
    Publication URI
    http://hdl.handle.net/10072/46841
    Collection
    • Journal articles

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