Streptomyces sp ASBV-1 reduces aflatoxin accumulation by Aspergillus parasiticus in peanut grains

Autor(es)

Zucchi, T. D. ^[1] ; de Moraes, L. A. B. ^[2] ; de Melo, I. S. ^[3]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Dept Entomol Fitopatol & Zool Agr, BR-13418900 Piracicaba, SP - Brazil

^[2] Univ Sao Paulo, Dept Quim, Fac Filosofia Ciencias & Letras Ribeirao Preto, BR-14049 Ribeirao Preto, SP - Brazil

^[3] EMBRAPA Meio Ambiente, Dept Microbiol, Jaguariuna, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Applied Microbiology; v. 105, n. 6, p. 2153-2160, DEC 2008.
• Citações Web of Science: 23

Resumo

To evaluate the ability of Streptomyces sp. (strain ASBV-1) to restrict aflatoxin accumulation in peanut grains. In the control of many phytopathogenic fungi the Streptomyces sp. ASBV-1 strain showed promise. An inhibitory test using this strain and A. parasiticus was conducted in peanut grains to evaluate the effects of this interaction on spore viability and aflatoxin accumulation. In some treatments the Streptomyces sp ASBV-1 strain reduced the viability of A. parasiticus spores by c. 85%, and inhibited aflatoxin accumulation in peanut grains. The values of these reductions ranged from 63 to 98% and from 67% to 96% for aflatoxins B(1) and G(1), respectively. It was demonstrated that Streptomyces sp. ASBV-1 is able to colonize peanut grains and thus inhibit the spore viability of A. parasiticus, as well as reducing aflatoxin production. The positive finding for aflatoxin accumulation reduction in peanut grains seems promising and suggests a wider use of this actinobacteria in biological control programmes. (AU)

• Processo FAPESP: 02/03191-7 - Proteção de amendoim (Arachis hypogaea) contra micotoxinas
• Beneficiário: Tiago Domingues Zucchi
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto