Title:	Changes in hyphal morphology due to chitosan treatment in some fungal species.
Authors:	OLIVEIRA JUNIOR, E. N. MELO, I. S. de FRANCO, T. T.
Affiliation:	ENIO NAZARÉ DE OLIVEIRA JÚNIOR, UNICAMP; ITAMAR SOARES DE MELO, CNPMA; TELMA TEIXEIRA FRANCO, UNICAMP.
Date Issued:	2012
Citation:	Brazilian Archives of Biology and Technology, Curitiba, v. 55, n. 5, p. 637-646, 2012.
Description:	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 (FA 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.
Thesagro:	Fungo Doença fúngica
NAL Thesaurus:	Chitosan Antifungal agents Plant pathogenic fungi fungal morphology
Keywords:	Alternative control of fungi Antifungal activity
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CNPMA)