Data/hora: 10/06/2024 16:59:20

Provedor de dados: | 52
País: | Brazil
Título: | Antibiosis and dark-pigments secretion by the phytopathogenic and environmental fungal species after interaction in vitro with a Bacillus subtilis isolate
Autores: | Machado,Alexandre Paulo; Vivi,Viviane Karolina; Tavares,José Roberto; Gueiros Filho,Frederico José; Fischman,Olga.
Data: | 2010-10-01
Ano: | 2010
Palavras-chave: | Bacillus subtilis; Phytopathogenic fungi; Environmental fungi; Microbial interaction.
Resumo: | In this work, different reactions in vitro between an environmental bacterial isolate and fungal species were related. The Gram-positive bacteria had terminal and subterminal endospores, presented metabolic characteristics of mesophilic and acidophilic growth, halotolerance, positive to nitrate reduction and enzyme production, as caseinase and catalase. The analysis of partial sequences containing 400 to 700 bases of the 16S ribosomal RNA gene showed identity with the genus Bacillus. However, its identity as B. subtilis was confirmed after analyses of the rpoB, gyrA, and 16S rRNA near-full-length sequences. Strong inhibitory activity of environmental microorganisms, such as Penicillium sp, Aspergillus flavus, A. niger, and phytopathogens, such as Colletotrichum sp, Alternaria alternata, Fusarium solani and F. oxysporum f.sp vasinfectum, was shown on co-cultures with B. subtilis strain, particularly on Sabouraud dextrose agar (SDA) and DNase media. Red and red-ochre color pigments, probably phaeomelanins, were secreted by A. alternata and A. niger respectively after seven days of co-culture.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000500001
Editor: | Instituto de Tecnologia do Paraná - Tecpar
Relação: | 10.1590/S1516-89132010000500001
Formato: | text/html
Fonte: | Brazilian Archives of Biology and Technology  v.53 n.5 2010
Fonte: | info:eu-repo/semantics/openAccess