The effectiveness of five natural products against three species of harmful algae

Authors

  • Yun-Hui Li,

    1. College of Life Science and Technology, Jinan University, Guangzhou, China
    2. Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, Jinan University, Guangzhou, China
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  • Ting Wu,

    1. College of Life Science and Technology, Jinan University, Guangzhou, China
    2. Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, Jinan University, Guangzhou, China
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  • Wei-Dong Yang,

    Corresponding author
    1. College of Life Science and Technology, Jinan University, Guangzhou, China
    2. Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, Jinan University, Guangzhou, China
    • Correspondence

      W-D. Yang, College of Life Science and Technology, Jinan University, Guangzhou 510632, China. Email: tywd@jnu.edu.cn

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  • Hong-Ye Li,

    1. College of Life Science and Technology, Jinan University, Guangzhou, China
    2. Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, Jinan University, Guangzhou, China
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  • Jie-Sheng Liu

    1. College of Life Science and Technology, Jinan University, Guangzhou, China
    2. Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, Jinan University, Guangzhou, China
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Abstract

The effects of five natural products on the growth of three harmful algae species including Chattonella marina Hara et Chihara, Alexandrium tamarense Balech and Karenia mikimotoi (Miyake & Kominami ex Oda) G. Hansen & Ø. Moestrup were observed. Four products including ε-polylysine, betaine, stachydrine and berberine exhibited selectively inhibitory effects against the three algae. However, the other product chitosan had no obvious inhibition against the above algae. Berberine and ε-polylysine exhibited relatively higher inhibitory capability against C. marina, and betaine had the highest inhibitory effect against A. tamarense. While only berberine could effectively inhibit the growth of K. mikimotoi with LC50, 120 at 3.1 mg/L. The fast inhibitory effect against K. mikimotoi and environmental safety of berberine suggested that it might be a potential algaecide against K. mikimotoi.

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