Title Endophytic Fungi Diversity of Aquatic/Riparian Plants and Their Antifungal Activity In Vitro
Author Hai-Yan Li*, Chun-An Zhao, Chen-Jian Liu, and Xiao-Fei Xu
Address Faculty of Life Sciences and Technology, Kunming University of Science and Technology, Kunming 650093, P. R. China
Bibliography Journal of Microbiology, 48(1),1-6, 2010,
DOI
Key Words aquatic plants, riparian plants, fungal endophytes, diversity, antifungal activity
Abstract Two hundred and fourteen endophytic fungi were isolated from 500 segments of aquatic/riparian plants Ottelia acuminata, Myriophyllum verticillatum, Equisetum arvense, Cardamine multijuga, and Impatiens chinensis. They were identified to 31 taxa in which Cladosporium, Fusarium, and Geotrichum were the dominant genera. Among all isolates, 169 (79%) were anamorphic fungi, 1 (0.5%) was an teleomorphic ascomycete and 44 (21%) were sterile mycelia. There were significant differences in the colonization frequency of endophytes between the five plant species (X~2=51.128, P<0.001, Chi-square test). The riparian plants harboured more endophytes than the submerged plants. The antifungal activity of these isolates against Fusarium solani and Phytophthora nicotianae in vitro were tested and 28 (13.1%) isolates showed antifungal activities with more than 30% growth inhibition rate against the two pathogens.