AlbornozTesteLambersEtAl2016

Référence

Albornoz, F.E., Teste, F.P., Lambers, H., Bunce, M., Murray, D.C., White, N.E., Laliberté, E. (2016) Changes in ectomycorrhizal fungal community composition and declining diversity along a 2-million-year soil chronosequence. Molecular Ecology, 25(19):4919-4929. (Scopus )

Résumé

Ectomycorrhizal (ECM) fungal communities covary with host plant communities along soil fertility gradients, yet it is unclear whether this reflects changes in host composition, fungal edaphic specialization or priority effects during fungal community establishment. We grew two co-occurring ECM plant species (to control for host identity) in soils collected along a 2-million-year chronosequence representing a strong soil fertility gradient and used soil manipulations to disentangle the effects of edaphic properties from those due to fungal inoculum. Ectomycorrhizal fungal community composition changed and richness declined with increasing soil age; these changes were linked to pedogenesis-driven shifts in edaphic properties, particularly pH and resin-exchangeable and organic phosphorus. However, when differences in inoculum potential or soil abiotic properties among soil ages were removed while host identity was held constant, differences in ECM fungal communities and richness among chronosequence stages disappeared. Our results show that ECM fungal communities strongly vary during long-term ecosystem development, even within the same hosts. However, these changes could not be attributed to short-term fungal edaphic specialization or differences in fungal inoculum (i.e. density and composition) alone. Rather, they must reflect longer-term ecosystem-level feedback between soil, vegetation and ECM fungi during pedogenesis. © 2016 John Wiley & Sons Ltd

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@ARTICLE { AlbornozTesteLambersEtAl2016,
    AUTHOR = { Albornoz, F.E. and Teste, F.P. and Lambers, H. and Bunce, M. and Murray, D.C. and White, N.E. and Laliberte, E. },
    TITLE = { Changes in ectomycorrhizal fungal community composition and declining diversity along a 2-million-year soil chronosequence },
    JOURNAL = { Molecular Ecology },
    YEAR = { 2016 },
    VOLUME = { 25 },
    NUMBER = { 19 },
    PAGES = { 4919-4929 },
    NOTE = { cited By 0 },
    ABSTRACT = { Ectomycorrhizal (ECM) fungal communities covary with host plant communities along soil fertility gradients, yet it is unclear whether this reflects changes in host composition, fungal edaphic specialization or priority effects during fungal community establishment. We grew two co-occurring ECM plant species (to control for host identity) in soils collected along a 2-million-year chronosequence representing a strong soil fertility gradient and used soil manipulations to disentangle the effects of edaphic properties from those due to fungal inoculum. Ectomycorrhizal fungal community composition changed and richness declined with increasing soil age; these changes were linked to pedogenesis-driven shifts in edaphic properties, particularly pH and resin-exchangeable and organic phosphorus. However, when differences in inoculum potential or soil abiotic properties among soil ages were removed while host identity was held constant, differences in ECM fungal communities and richness among chronosequence stages disappeared. Our results show that ECM fungal communities strongly vary during long-term ecosystem development, even within the same hosts. However, these changes could not be attributed to short-term fungal edaphic specialization or differences in fungal inoculum (i.e. density and composition) alone. Rather, they must reflect longer-term ecosystem-level feedback between soil, vegetation and ECM fungi during pedogenesis. © 2016 John Wiley & Sons Ltd },
    AUTHOR_KEYWORDS = { chronosequence; ecosystem development; ectomycorrhizas; fungi; high-throughput sequencing; phosphorus },
    DOCUMENT_TYPE = { Article },
    DOI = { 10.1111/mec.13778 },
    SOURCE = { Scopus },
    URL = { https://www.scopus.com/inward/record.uri?eid=2-s2.0-84988926683&partnerID=40&md5=6e525317af8eb51e864abfbedb846b1e },
}

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