such as "Introduction", "Conclusion"..etc
August 14, 2009 --
Three Thai orchids have been found to rely on a wide range of fungi to
help them take carbon out of the soil instead of producing their own
organic carbon. A detailed study of the relationship, published in the
open access journal BMC Biology, also features stunning pictures of the
Selosse and Mélanie Roy, from the Centre d'Ecologie Fonctionnelle et
Evolutive, Montpellier, France, studied Aphyllorchis montana, A.
caudata and Cephalanthera exigua orchids with Suyanee Vessabutr and
Santi Watthana from the Queen Sirikit Botanic Garden, Thailand. These
orchids have no chlorophyll and rely on fungi colonizing their roots
for their carbon supply.
The plants, which grow on the ground in mountain forests, were
collected from 10 different sampling sites in diverse parts of
Thailand. The two Aphyllorchis orchids studied were found to associate
with a wide range of fungi, while the Cephalanthera was much more
specific. Selosse said, "We show for the first time that certain
tropical orchids associate with highly diverse soil fungi colonizing
their roots; using stable isotopes, we show that they are likely to use
these fungi as a carbon source". Most importantly for conservation
concerns, all these fungi associate in turn with the roots of nearby
green trees, where they collect carbon for the orchids.
about the results of the study, Selosse said, "Plants really interact
with fungi in an unexpectedly diverse way - the impression one gains is
that there is a great need for more research on biological interactions
in the tropics to unravel this diversity".BioMed Central
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