13
views
0
recommends
+1 Recommend
0 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: not found

      Measuring ectomycorrhizal fungal dispersal: macroecological patterns driven by microscopic propagules.

      1 , , ,
      Molecular ecology
      Wiley-Blackwell

      Read this article at

      ScienceOpenPublisherPubMed
      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          Dispersal plays a prominent role in most conceptual models of community assembly. However, direct measurement of dispersal across a whole community is difficult at ecologically relevant spatial scales. For cryptic organisms, such as fungi and bacteria, the scale and importance of dispersal limitation has become a major point of debate. We use an experimental island biogeographic approach to measure the effects of dispersal limitation on the ecological dynamics of an important group of plant symbionts, ectomycorrhizal fungi. We manipulated the isolation of uncolonized host seedlings across a natural landscape and used a range of molecular techniques to measure the dispersal rates of ectomycorrhizal propagules and host colonization. Some species were prolific dispersers, producing annual spore loads on the order of trillions of spores per km(2). However, fungal propagules reaching host seedlings decreased rapidly with increasing distance from potential spore sources, causing a concomitant reduction in ectomycorrhizal species richness, host colonization and host biomass. There were also strong differences in dispersal ability across species, which correlated well with the predictable composition of ectomycorrhizal communities associated with establishing pine forest. The use of molecular tools to measure whole community dispersal provides a direct confirmation for a key mechanism underlying island biogeography theory and has the potential to make microbial systems a model for understanding the role of dispersal in ecological theory.

          Related collections

          Author and article information

          Journal
          Mol. Ecol.
          Molecular ecology
          Wiley-Blackwell
          1365-294X
          0962-1083
          Aug 2012
          : 21
          : 16
          Affiliations
          [1 ] Department of Plant Pathology, University of Minnesota, St Paul, MN 55108, USA.
          Article
          10.1111/j.1365-294X.2012.05666.x
          22703050
          9899bc89-f557-4a77-92c0-d65f663f919f
          History

          Comments

          Comment on this article