Data/hora: 06/06/2024 04:35:25

Biblioteca(s): | Embrapa Soja.
Tipo da produção científica: | Artigo em Periódico Indexado
Circulação/Nível: | Internacional - A
Data corrente: | 30/07/2008
Data da última atualização: | 05/08/2017
Autoria: | BARRETO, E. S.; TORRES, A. R.; BARRETO, M. R.; VASCONCELOS, A. T. R.; ASTOLFI-FILHO, S.; HUNGRIA, M.
Afiliação: | ERIANA SERPA BARRETO; ADALGISA RIBEIRO TORRES; MARLITON ROCHA BARRETO; ANA TEREZA RIBEIRO VASCONCELOS, LNCC/MCT; SPARTACO ASTOLFI-FILHO, UFAM; MARIANGELA HUNGRIA DA CUNHA, CNPSO.
Título: | Diversity in antifungal activity of strains of Chromobacterium violaceum from the Brazilian Amazon.
Ano de publicação: | 2008
Fonte/Imprenta: | Journal of Industrial Microbiology and Biotechnology, v. 35, p. 783-790, 2008.
ISSN: | 1367-5435
DOI: | 10.1007/s10295-008-0331-z
Idioma: | Inglês
Conteúdo: | Chromobacterium violaceum is a free-living Gram-negative bacterium found in soil and aquatic habittats; abundantly present in the Brazilian Amazon, it is an important example of exploitable microbial diversity of the tropics. In this study, 24 strains from the Brazilian Amazon and ATCC 12472t were investigated for biocontrol potential of sevem fungi pathogenic to soybean [Glycine max (L.) Merril] seed. Both cells and the supernatants of two Brazilian strains, 07-1 and 27-1, together with ATCC 12472t were strongly antagonistic to six out of the seven fungi. The antifungal activity of the Brazilian strains to Fusarium sp., Phomopsis sp. and Cercospora kikuchi was consistently stronger than that of ATCC 12472t. In addition, the two Brazilian strains, but not ATCC 12472t, were effective against Corynespora sp., and all three strains and their supernatants were equally effective against Aspergillus sp. and Colletotrichum sp. None of the strains had antifungal activity against Botroyodiplodia sp. There potential mechanisms related to the antibiosis were investigated: violacein toxicity, cyanide production and chitinolytic activity: however, it was not possible to associate any of them with the antifungal activity. The results highlight the biotechnological potential still to be explored within the poorly characterized microbial biodiversity of the tropics.
Thesagro: | Controle Biológico; Doença de Planta; Fungicida; Soja.
Categoria do assunto: | --
Registro original: | Embrapa Soja (CNPSO)
Exemplares: | CNPSO - (28269-1) - UPC - AP - PP - 11472 -  - 11472 - DIS