MSA - Ecology/Pathology
Gazis, Romina , Chaverri, Priscila .
Differences in the fungal endophytic community of Hevea brasiliensis under different forest managements.
Fungal endophyte species assemblage inhabiting Hevea brasiliensis in the wild and in plantations was determined using morphological and molecular methods. Phylogenies were reconstructed using ITS and LSU nuclear ribosomal DNA, and tef1 regions. One wild and two managed populations were selected for the study: one wild population located in Tambopata (Peru), one plantation located in Iberia (Peru), and another plantation located in Buea (Cameroon). Fungal endophytes were isolated from living sapwood and asymptomatic leaves. Data was partitioned according to their geographic origin and plant part. Diversity and similarity indices were calculated and compared for each location, site within locations, and plant parts. Differences in the endophyte community composition were found especially between the sites located in Peru and the site located in Cameroon, even under the same forest management. Tambopata (wild) population was found to be dominated by: Pestalotiopsis,Trichoderma, and Penicillium; Iberia (plantation) population was found to be dominated by Pestalotiopsis, Trichoderma, and Paecilomyces; and Buea (plantation) population was found to be dominated by Colletotrichum and Guignardia. The ultimate goal of this study was to detect and identify which culturable fungal endophyte species or strains are only present in the hostís natural habitat and due to their horizontal transmission, might have lost their association with the host during the cropís distribution expansion.
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1 - University of Maryland, Department of Plant Sciences and Landscape Architecture, 2112 Plant Sciences Building, University of Maryland, College Park, MD, 20742, USA
Presentation Type: Oral Paper:Papers for Topics
Location: Cottonwood B/Snowbird Center
Date: Tuesday, July 28th, 2009
Time: 10:30 AM