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      Antifungal Secondary Metabolites Isolated from Mangrove Rhizosphere Soil-Derived Penicillium Fungi

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          Abstract

          Fungi isolated from mangrove rhizosphere soil of the South China Sea were investigated for the production of potential antifungal metabolites. With 28 fungal isolates, the strains Penicillium javanicum HK1-23 and P. janthinellum HK1-6 showed significant antifungal activities. A bioassay-guided investigation of the two fungal strains led to the isolation of two secondary metabolites, brefeldin A and penicillic acid, with high yields of 143 and 423 mg L −1, respectively. Penicillic acid showed potent antifungal activities toward Rhizoctonia solani and R. cerealis, with 67.5% and 76% growth inhibition, respectively, at 50 μg mL −1. Brefeldin A showed strong activity toward R. cerealis, with 56.4% growth inhibition at 50 μg mL −1. The research highlights the importance of exploring microbes from mangrove rhizosphere soil for the identification of bioactive metabolites for future fungicide development.

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          Author and article information

          Journal
          JOUC
          Journal of Ocean University of China
          Science Press and Springer (China )
          1672-5182
          02 May 2020
          01 June 2020
          : 19
          : 3
          : 717-721
          Affiliations
          1Marine Science & Technology Institute, College of Environmental Science & Engineering, Yangzhou University, Yangzhou 225127, China
          2Key Laboratory of Marine Drugs, the Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
          3Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
          Author notes
          *Corresponding author: CHEN Min, Tel: 0086-514-89357891, E-mail: dieying0719@ 123456163.com
          Article
          s11802-020-4360-1
          10.1007/s11802-020-4360-1
          Copyright © Ocean University of China, Science Press and Springer-Verlag GmbH Germany 2020.

          The copyright to this article, including any graphic elements therein (e.g. illustrations, charts, moving images), is hereby assigned for good and valuable consideration to the editorial office of Journal of Ocean University of China, Science Press and Springer effective if and when the article is accepted for publication and to the extent assignable if assignability is restricted for by applicable law or regulations (e.g. for U.S. government or crown employees).

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          Self URI (journal-page): https://www.springer.com/journal/11802

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