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Registro Completo |
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
06/12/2012 |
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Data da última atualização: |
06/12/2012 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
OLIVEIRA JUNIOR, E. N.; MELO, I. S. de; FRANCO, T. T. |
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Afiliação: |
ENIO NAZARÉ DE OLIVEIRA JÚNIOR, UNICAMP; ITAMAR SOARES DE MELO, CNPMA; TELMA TEIXEIRA FRANCO, UNICAMP. |
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Título: |
Changes in hyphal morphology due to chitosan treatment in some fungal species. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Brazilian Archives of Biology and Technology, Curitiba, v. 55, n. 5, p. 637-646, 2012. |
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Idioma: |
Inglês |
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Conteúdo: |
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. |
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Palavras-Chave: |
Alternative control of fungi; Antifungal activity. |
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Thesagro: |
Doença fúngica; Fungo. |
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Thesaurus Nal: |
Antifungal agents; Chitosan; fungal morphology; Plant pathogenic fungi. |
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Categoria do assunto: |
S Ciências Biológicas |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/71697/1/2012AP38.pdf
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Marc: |
LEADER 01488naa a2200241 a 4500
001 1941619
005 2012-12-06
008 2012 bl uuuu u00u1 u #d
100 1 $aOLIVEIRA JUNIOR, E. N.
245 $aChanges in hyphal morphology due to chitosan treatment in some fungal species.$h[electronic resource]
260 $c2012
520 $aIn 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.
650 $aAntifungal agents
650 $aChitosan
650 $afungal morphology
650 $aPlant pathogenic fungi
650 $aDoença fúngica
650 $aFungo
653 $aAlternative control of fungi
653 $aAntifungal activity
700 1 $aMELO, I. S. de
700 1 $aFRANCO, T. T.
773 $tBrazilian Archives of Biology and Technology, Curitiba$gv. 55, n. 5, p. 637-646, 2012.
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Embrapa Meio Ambiente (CNPMA) |
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