Record ID No. |
68 |
Author(s) |
Moyersoen B. , 2006 |
Affiliation |
4 Pl Ste Veronique, B-4000 Liege, Belgium |
Title |
Pakaraimaea dipterocarpacea is ectomycorrhizal, indicating an ancient Gondwanaland origin for the ectomycorrhizal habit in Dipterocarpaceae |
Source. Vol.(no):Page |
New phytologist. 172(4): 753-762p. |
Categories |
Ectomycorrhiza |
Subjects |
Ecology |
Host |
Paleotropical dipterocarpaceae, Pakaraimaea dipterocarpacea, |
Organism |
Clavulinaceae, Sebacinaceae Cortinariaceae, Amanitaceae |
Country |
Belgium, Europe |
Abstracts |
The consistent association of Paleotropical
Dipterocarpaceae with ectomycorrhizal (ECM) fungi suggests that
ECM status is an ancestral character in the family. Despite its distinctive morphology, Pakaraimaea dipterocarpacea, a
Neotropical Dipterocarpaceae endemic to the Guayana Region, is
phylogenetically related to the Paleotropical Dipterocarpaceae.
The confirmation of P. dipterocarpacea ECM status would indicate
that Paleotropical Dipterocarpaceae and P. dipterocarpacea
probably had a common ECM ancestor. Mycorrhizal colonization of
P. dipterocarpacea was assessed, and ECMs were recorded using
histological and molecular methods. P. dipterocarpacea was
highly colonized by typical ECMs, and several ECM fungal taxa
belonging to Clavulinaceae, Sebacinaceae, Cortinariaceae and
Amanitaceae were identified. This paper provides the first
documented evidence of ECM in a neotropical genus of
Dipterocarpaceae and indicates that ECMs possibly evolved in
Gondwana in ancestors of Dipterocarpaceae before the separation
of South America from Africa by the Atlantic, c. 135 million
years ago. The observation of Sebacinaceae and Clavulinaceae
suggests that broad host range fungi are important components of
P. dipterocarpacea ECM communities
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