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Succinic acid inhibited growth and pathogenicity of in vitro soil-borne fungus Fusarium oxysporum f. sp. niveum |
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| Authors: | Hong-Sheng Wu Ya-Dong Liu Geng-Mao Zhao Xiao-Qing Chen Xiao-Nan Yang Xiao-Dong Zhou |
| Institution: | 1. College of Applied Meteorology , Nanjing University of Information Science and Technology , Nanjing, 210044, China wuhscn@gmail.com;3. Yangzhou Polytechnic Institute , Yangzhou, Jiangsu, 225237, China;4. College of Resources and Environmental Sciences , Nanjing Agricultural University , Nanjing, 210095, China;5. College of Applied Meteorology , Nanjing University of Information Science and Technology , Nanjing, 210044, China |
| Abstract: | Abstract To clarify possible mechanisms of interaction of soil–plant–microbe for fusarium wilt of watermelon, succinic acid was added into the media to test its effect on in vitro Fusarium oxysporum f. sp. niveum in the ecological and biogeochemical cycling of soil–plant–microbe. Results showed that succinic acid decreased the growth and conidia germination of Fusarium oxysporum f. sp. niveum. The biomass and the conidia germinating rate were reduced by 10.1–59.8% and 14.4–21.4% respectively. Mycotoxin production and pathogenic enzyme activity by the fungus were suppressed at higher concentrations of succinic acid. Results suggested that succinic acid would not increase the risk of Fusarium oxysporum attacking plants, animals and humans due to its inhibition of fungus in the ecological and biogeochemical cycling of succinic acid in the interaction of soil–plant–microbe. |
| Keywords: | pathogenic fungus phenolic acid risk assessment soil–plant–microbe interaction virulent factors |