Antifungal Prospect of Bacillus cereus Postbiotic on Crustacean Pathogen, Lagenidium thermophilum.

IF 0.9 4区农林科学 Q4 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Biocontrol science Pub Date : 2021-01-01 DOI:10.4265/bio.26.201

Joning Elliecpearl Jasca, Kian Yong Annita Seok, Lajimin Suraini, Yao Ang Chun, Ransangan Julian, Motohiko Sano, Shigeki Dan, Katsuyuki Hamasaki, Kasan Nor Azman, M Lal Tamrin

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Abstract

Pathogenic marine fungi, Lagenidium thermophilum is known causative agent in the crustacean industry. Current disinfection practice in hatchery has risks and negative impacts which prompts suitable substitute to synthetic antifungal agents. Thus, this study was conducted to evaluate the antifungal potential of postbiotic from four potential probiotics towards marine oomycetes, L. thermophilum IPMB 1401. The screening test showed that the Lactobacillus plantarum GS12 and Bacillus cereus GS15 postbiotics were positive for antifungal activity on L. thermophilum IPMB 1401. These two bacterial extracts have minimum inhibitory concentration （MIC） at 50%. The toxicity assay on MIC level of the postbiotic revealed that the cumulative mortality of brine shrimp nauplii exposed to B. cereus postbiotic was significantly lower compared to L. plantarum GS12 postbiotic and formalin. This indicates a high potential of B. cereus GS15 as a prospect for alternative control method for fungal infections in the crustacean culture industry.

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蜡样芽孢杆菌生后对甲壳类病原菌嗜热Lagenidium的抑菌前景。

致病性海洋真菌，嗜热Lagenidium thermoophilum是甲壳类动物工业中已知的病原体。目前孵化场的消毒实践存在风险和负面影响，需要寻找合适的替代人工合成抗真菌剂。因此，本研究对四种潜在的益生菌对海洋卵菌L. thermophilum IPMB 1401的抑菌潜力进行了评价。筛选结果表明，植物乳杆菌GS12和蜡样芽孢杆菌GS15后生菌对嗜热乳杆菌IPMB 1401的抑菌活性呈阳性。这两种细菌提取物的最低抑菌浓度(MIC)为50%。MIC水平的毒性试验表明，蜡样芽孢杆菌的累积死亡率明显低于植物芽孢杆菌GS12和福尔马林。这表明蜡样芽孢杆菌GS15在甲壳类动物培养工业中作为真菌感染的替代控制方法具有很高的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Biocontrol science BIOTECHNOLOGY & APPLIED MICROBIOLOGY-

CiteScore

2.60

自引率

8.30%

发文量

审稿时长

>12 weeks

期刊介绍： The Biocontrol Science provides a medium for the publication of original articles, concise notes, and review articles on all aspects of science and technology of biocontrol.