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Advisor(s)
Abstract(s)
Summary. Low and high molecular weight chitosan were tested in different concentrations and growth times with the aim to evaluate the
inhibitory activity against Botrytis cinerea, a very important plant pathogen. Tested chitosans were characterized by vibratory spectroscopy
and elementary analyzes to determine the deacetylation degree. In addiction molar mass was estimated by viscosity measuring. Scanning
electron microscopy was utilized for antimicrobial activity observation. Results showed that both chitosans markedly inhibited fungal
growth, which was effected by incubation time and chitosan concentration. Scanning electron microscopy observations revealed that
chitosan induced changes in surface morphology. The present study show that chitosan is capable of inhibit the growth and cause serious
damage to the cell structure of the B. cinerea, as well as have the ability to form an impervious layer around the cell. Therefore, chitosan
could be considered as a potential alternative for synthetic fungicides.
Industrial relevance. Ultrastructural analysis showed that chitosan is capable of causing serious damage to the cell structure of the B.
cinerea, as well as have the ability to form an impervious layer around the cell. Chitosan could inhibit the growth of B. cinerea in vitro and
consequently may be considered as a potential alternative in replacement of synthetic fungicides.
Description
Keywords
Biopolymer Chitosan Antifungal activity Fungal morphology Electron microscopy
Pedagogical Context
Citation
SILVA JÚNIOR, S… [et al.] - Characterization and inhibitory activity of chitosan on hyphae growth and morphology of Botrytis cinerea plant pathogen. International Journal of Applied Research in Natural Products. ISSN 1940-6223. Vol. 7, n.º 4 (2014), p. 31-38
Publisher
Healthy Synergies Publications
CC License
Without CC licence