Geographic locality greatly influences fungal endophyte communities in Cephalotaxus harringtonia |
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Authors: | Aude Langenfeld,Soizic Prado,Bastien Nay,Corine Cruaud,Sandrine Lacoste,Edith Bury,Franç ois Hachette,Tsuyoshi Hosoya,Joë lle Dupont |
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Affiliation: | 1. Origine, Structure et Evolution de la Biodiversité, UMR 7205 CNRS/MNHN, Muséum National d''Histoire Naturelle, CP 39, 57 rue Cuvier, 75231 Paris Cedex 05, France;2. Molécules de Communication et Adaptation des Micro-Organismes, UMR 7245 CNRS/MNHN, Muséum National d''Histoire Naturelle, CP 54, 57 rue Cuvier, 75231 Paris Cedex 05, France;3. Génoscope, Centre National de Séquençage, 2 rue Gaston Crémieux, CP5706, 91057 Evry Cedex, France;4. Jardins Botaniques, Arboretum de Chèvreloup, USM 0802, Muséum National d''Histoire Naturelle, 30 route de Versailles, 78150 Rocquencourt, France;5. Museum of Nature and Science, Department of Botany, Amakubo 4-1-1, Tsukuba, Ibaraki 305-0005, Japan |
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Abstract: | Although endophytes of conifers have been extensively studied, few data are available on Cephalotaxaceae. We examined foliar and stem endophytes of Cephalotaxus harringtonia, within its natural range in Japan and outside its natural range in France to study the effect of geography on endophyte community composition. In Japan, rapidly growing endophytes were dominant and may have masked the real diversity, in comparison to France where most endophytes were growing slowly. Analyses of ITS rDNA revealed 104 different Blast Groups among 554 isolates. Almost no overlap between endophyte assemblages of C. harringtonia from the two countries was observed. It seems that Japanese C. harringtonia trees, which should be well adapted to their native site, would host a specific, endemic endophyte community, while trees that have been introduced recently to a foreign site, in France, should have captured existing cosmopolitan and more generalist taxa. In Japan the majority of xylariaceous taxa, which dominated the communities, were unknown and, although closely related to Asian taxa, may be new to science. Dothideomycetes were more prevalent in France. Locally, urban environment, particularly in Japan, may have introduced some perturbations in the native endophyte community of C. harringtonia, with an abundance of generalist fungi such as Nigrospora and Colletotrichum. |
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Keywords: | Ascomycota Biodiversity Molecular identification Phylogeny Xylariales |
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