Data/hora: 04/06/2024 02:30:58

Provedor de dados: | 58
País: | Brazil
Título: | Hyphal-like extension and pseudohyphal formation in industrial strains of yeasts induced by isoamyl alcohol
Autores: | Ceccato-Antonini,Sandra Regina; Silva,Paula Cristina da.
Data: | 2002-09-01
Ano: | 2002
Palavras-chave: | Isoamyl alcohol; Ethanol; Yeast; Pseudohyphae; Hyphal-like extension.
Resumo: | Yeasts can produce pseudohyphae and hyphal-like extensions under certain growth conditions like isoamyl alcohol (IAA) induction, a chief constituent of fusel oil, which is a subproduct from the ethanolic fermentation. The morphology switch from yeast to a filamentous form can be troublesome to the process. In this work it was studied the influence of fusel alcohols, nitrogen sources (ammonium sulphate and leucine) and glifosate (a chemical maturator for sugar cane) added to a complex medium on some industrial strains of yeasts isolated from the fermentative process. Two industrial strains showed transition to hyphal-like extensions or pseudohyphae (clusters of cells) upon addition of IAA from 0.3 to 0.9% /v. The alterations were reversible when the yeasts were reinoculated in YEPD without IAA. Although pseudohyphae are a result of nitrogen-limited medium, we observed them as a result of IAA addition. No influence of the nitrogen source or isopropilic alcohol or glifosate was detected for any strain studied in the concentrations used.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822002000300004
Editor: | Sociedade Brasileira de Microbiologia
Relação: | 10.1590/S1517-83822002000300004
Formato: | text/html
Fonte: | Brazilian Journal of Microbiology  v.33 n.3 2002
Fonte: | info:eu-repo/semantics/openAccess