Abstract
There are numerous signs that at least some lineages of mycoheterotrophic plants are evolving rapidly, in terms of both speciation and divergence in ecologically interesting traits. Historical demographic and migration patterns, species and population boundaries, genetic architecture, and natural selection can all be studied using the tools of ecological genetics. Furthermore, rapidly advancing molecular and analytical methods are increasingly opening the tools of ecological genetics to non-model organisms. Here, we describe recent initial work on the ecological genetics of several Northern-hemisphere, temperate, ectomycorrhiza-associated fully mycoheterotrophic plants in the genera Hypopitys (Ericaceae), Corallorhiza and Hexalectris (Orchidaceae). Trends emerging from these recent studies include high levels of inbreeding, cryptic genetically distinct sympatric demes, and geographic structuring of populations, all of which may be related to coincident changes in fungal associations and mycoheterotrophic plant speciation. We suggest ways in which ecological genetics and genomics might be used to provide exciting new insights into the biology of mycoheterotrophic plants.
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Taylor, D.L., Barrett, C.F., Beatty, G.E., Hopkins, S.E., Kennedy, A.H., Klooster, M.R. (2013). Progress and Prospects for the Ecological Genetics of Mycoheterotrophs. In: Merckx, V. (eds) Mycoheterotrophy. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-5209-6_6
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