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@article{Bidartondo:2004:10.1098/rspb.2004.2807,
author = {Bidartondo, MI and Burghardt, B and Gebauer, G and Bruns, TD and Read, DJ},
doi = {10.1098/rspb.2004.2807},
journal = {Proceedings of the Royal Society B},
pages = {1799--1806},
title = {Changing partners in the dark: isotopic and molecular evidence of ectomycorrhizal liaisons between forest orchids and trees.},
url = {http://dx.doi.org/10.1098/rspb.2004.2807},
volume = {271},
year = {2004}
}
TY - JOUR
AB - In the mycorrhizal symbiosis, plants exchange photosynthates for mineral nutrients acquired by fungi from the soil. This mutualistic arrangement has been subverted by hundreds of mycorrhizal plant species that lack the ability to photosynthesize. The most numerous examples of this behaviour are found in the largest plant family, the Orchidaceae. Although these non-photosynthetic orchid species are known to be highly specialized exploiters of the ectomycorrhizal symbiosis, photosynthetic orchids are thought to use free-living saprophytic, or pathogenic, fungal lineages. However, we present evidence that putatively photosynthetic orchids from five species which grow in the understorey of forests: (i) form mycorrhizas with ectomycorrhizal fungi of forest trees; and (ii) have stable isotope signatures indicating distinctive pathways for nitrogen and carbon acquisition approaching those of non-photosynthetic orchids that associate with ectomycorrhizal fungi of forest trees. These findings represent a major shift in our understanding of both orchid ecology and evolution because they explain how orchids can thrive in low-irradiance niches and they show that a shift to exploiting ectomycorrhizal fungi precedes viable losses of photosynthetic ability in orchid lineages.
AU - Bidartondo,MI
AU - Burghardt,B
AU - Gebauer,G
AU - Bruns,TD
AU - Read,DJ
DO - 10.1098/rspb.2004.2807
EP - 1806
PY - 2004///
SN - 0962-8452
SP - 1799
TI - Changing partners in the dark: isotopic and molecular evidence of ectomycorrhizal liaisons between forest orchids and trees.
T2 - Proceedings of the Royal Society B
UR - http://dx.doi.org/10.1098/rspb.2004.2807
VL - 271
ER -
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