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Antifungal activity of chitosan against Fusarium oxysporum f. sp. cubense.


Citation

Al-Hetar, M. Y. and Mior Ahmad, Zainal Abidin and Meon, Sariah and Wong, Mui Yun (2011) Antifungal activity of chitosan against Fusarium oxysporum f. sp. cubense. Journal of Applied Polymer Science, 120 (4). pp. 2434-2439. ISSN 0021-8995

Abstract / Synopsis

The in vitro antifungal activity of chitosan against Fusarium oxysporum f. sp. cubense Race 4 (FocR4) the causal agent of banana wilt was investigated. Chitosan at all concentrations tested reduced the hyphal growth of FocR4 on potato dextrose agar media and recording maximum inhibition of 76.36% at 8 mg/mL. The inhibitory effect was found to increase as chitosan concentration increases. The 50% effective concentration value was estimated by probit analysis, and it was 1.4 mg/mL. Chitosan was more effective in potato dextrose broth where it completely inhibited the mycelial growth of FocR4 at all concentrations tested. Chitosan inhibited the sporulation of FocR4 by a maximum of 96.53% at 8 mg/mL chitosan, and 100% inhibition for spore germination was recorded at all concentrations tested. Chitosan at concentrations of more than 1.6 mg/mL was also found to induce morphological changes in FocR4 characterized by agglomeration of hyphae, abnormal shapes, vesicles, or empty cells devoid of cytoplasm in the mycelia.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Agriculture
DOI Number: https://doi.org/10.1002/app.33455
Publisher: Wiley Online Library
Keywords: Chitosan; Fusarium oxysporum; Antifungal; Banana wilt
Depositing User: Nur Farahin Ramli
Date Deposited: 29 Nov 2013 08:15
Last Modified: 10 Feb 2016 00:42
URI: http://psasir.upm.edu.my/id/eprint/23651
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