Mycologia
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DOI: 10.3852/08-182
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Mycologia, 101(5), 2009, pp. 686-691.
© 2009 by The Mycological Society of America

Molecular diversity and host specificity of termite-associated Xylaria


Herbert J. Guedegbe 1

     UMR IRD 137 BioSol, Laboratoire d’Ecologie des Sols Tropicaux, Institut de Recherches pour le Développement, 32 avenue Henri Varagnat 93143 Bondy Cedex. 59 70 France, and Laboratoire d’Ecologie Microbienne, Faculté des Sciences Agronomiques (FSA), Université d’Abomey-Calavi, 01 BP 526 Recette Principale Cotonou Benin

Edouard Miambi
Anne Pando 2

     UMR IRD 137 BioSol, Laboratoire d’Ecologie des Sols Tropicaux, Institut de Recherches pour le Développement, 32 avenue Henri Varagnat 93143 Bondy Cedex, France

Pascal Houngnandan

     Laboratoire d’Ecologie Microbienne, Faculté des Sciences Agronomiques (FSA), Université d’Abomey-Calavi, 01 BP 526 Recette Principale Cotonou Benin

Corinne Rouland-Lefevre 3

     IRD, Ressources Vivante, 32 avenue Henri Varagnat, BONDY, Seine Saint Denis 93140, France

Studies have revealed that some Xylaria species were closely associated with fungus-growing termite nests. However this relationship rarely had been investigated and the host specificity of termite-associated Xylaria was not yet clearly established. Eighteen Xylaria rDNA-ITS sequences were obtained from fungus combs belonging to 11 Macrotermitinae species from eight regions. Low diversity was found between isolates, and nine sequences were retrieved. Termite-associated Xylaria were shown to be monophyletic, with three main clades, all including strains from various termite hosts and geographical localities. This new molecular study shows no species specificity with respect to fungus-growing termites, which suggests that there might be substrate specialization.

Key words: fungus combs, host specificity, ITS sequences, phylogeny, termite-associated Xylaria

3 Corresponding author. E-mail: rouland{at}bondy.ird.fr






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Copyright © 2009 by The Mycological Society of America.