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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Multi-host ectomycorrhizal fungi are predominant in a Guinean tropical rainforest and shared between canopy trees and seedlings
Environmental Microbiology, Volume 12, No. 8, Year 2010
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Description
The diversity of ectomycorrhizal (ECM) fungi on adult trees and seedlings of five species, Anthonotha fragrans, Anthonotha macrophylla, Cryptosepalum tetraphyllum, Paramacrolobium coeruleum and Uapaca esculenta, was determined in a tropical rain forest of Guinea. Ectomycorrhizae were sampled within a surface area of 1600 m2, and fungal taxa were identified by sequencing the rDNA Internal Transcribed Spacer region. Thirty-nine ECM fungal taxa were determined, of which 19 multi-hosts, 9 single-hosts and 11 singletons. The multi-host fungi represented 92% (89% when including the singletons in the analysis) of the total abundance. Except for A. fragrans, the adults of the host species displayed significant differentiation for their fungal communities, but their seedlings harboured a similar fungal community. These findings suggest that there was a potential for the formation of common mycorrhizal networks in close vicinity. However, no significant difference was detected for the δ13C and δ15N values between seedlings and adults of each ECM plant, and no ECM species exhibited signatures of mixotrophy. Our results revealed (i) variation in ECM fungal diversity according to the seedling versus adult development stage of trees and (ii) low host specificity of ECM fungi, and indicated that multi-host fungi are more abundant than single-host fungi in this forest stand. © 2010 Society for Applied Microbiology and Blackwell Publishing Ltd.
Authors & Co-Authors
Diedhiou, Abdala Gamby
France, Montpellier
Laboratoire Des Symbioses Tropicales et Méditerranéennes
Senegal, Dakar
Centre Ird de Bel Air
Selosse, Marc André
France, Paris
Cnrs Centre National de la Recherche Scientifique
Galiana, Antoine
France, Montpellier
Laboratoire Des Symbioses Tropicales et Méditerranéennes
Diabaté, Moussa
France, Montpellier
Laboratoire Des Symbioses Tropicales et Méditerranéennes
Guinea
Programme Recherche Forestière
Dreyfus, Bernard Louis
France, Montpellier
Laboratoire Des Symbioses Tropicales et Méditerranéennes
Bá, Amadou Moustapha
France, Montpellier
Laboratoire Des Symbioses Tropicales et Méditerranéennes
France, Pointe-a-pitre
Universite Des Antilles et de la Guyane
de Faria, S. M.
Brazil, Seropedica
Embrapa Agrobiologia
Béna, Gilles
France, Montpellier
Laboratoire Des Symbioses Tropicales et Méditerranéennes
Statistics
Citations: 77
Authors: 8
Affiliations: 6
Identifiers
Doi:
10.1111/j.1462-2920.2010.02183.x
ISSN:
14622912
Study Locations
Guinea