Changes in hyphal morphology due to chitosan treatment in some fungal species

Brazilian Archives of Biology and Technology

Enio Nazaré De Oliveira Junior²  Itamar Soares De Melo¹  Telma Teixeira Franco² 

[1] ,Universidade Estadual de Campinas Faculdade de Engenharia Química Departmento de Processos QuímicosCampinas SP ,Brasil

关键词: chitosan;    alternative control of fungi;    antifungal activity;    plant pathogenic fungi;    fungal morphology;   

DOI  :  10.1590/S1516-89132012000500001

来源: SciELO

【 摘 要 】

In this work, changes in the hyphal morphology due to chitosan treatment in some fungal species were studied. Scanning electron microscope (SEM) observations revealed that chitosans with molar fraction of acetyl groups (F A 0.16 and 0.18) and degree of polymerization (DP 1,089 and 1,242) had a direct effect on the morphology of the chitosan-treated fungi, reflecting its potential for causing a delay in the growth of Alternaria alternata (500 µg × mL-1), Botrytis cinerea (1,000 µg × mL-1), Penicillium expansum (1,000 µg × mL-1) and Rhizopus stolonifer (500 µg × mL-1). Mycelial aggregation and structural changes such as excessive branching, swelling of the cell wall and hyphae size reduction were observed in the micrographs.

【 授权许可】

CC BY-NC   
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