Biological control of Tiarosporella phaseolina the causal agent of charcoal rot of soybean.
Commun Agric Appl Biol Sci
; 70(3): 189-92, 2005.
Article
em En
| MEDLINE
| ID: mdl-16637176
ABSTRACT
Charcoal rot caused by Tiarosporella phaseolina (Tassi) Van der Aa is an important disease of soybean in Gorgan province of Iran. Experiments were carried out with 95 bactenal isolates that were collected from the rhizosphere of soybean plant. Among these bacteria only 50 isolates showed antagonistic effect on Tiarosporella phaseolina using dual culture test. Six highly effective bacteria were selected for subsequent studies. Based on biochemical physiological and morphological tests, isolates Pf-12 and Pf-63 were identified as Pseudomonas fluorescens, isolates B-13, B-42,B-126 and B-84 as Bacillus subtilis. The isolates of P. fluorescens produced antibiotics as well as volatile metabolites that inhibited mycelial growth of fungus. Bacillus subtilis isolates inhibited the fungal growth through volatile and non-volatile metabolites production. Only P. fluorescens isolates produced hydrogen cyanide. In greenhouse studies, the isolates B-13 and B-126 reduced 59% and 66% the intensity of charcoal rot of soybean respectively. The combinations of isolates B-13 and B-126 were also effective on reducing the intensity of disease.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Glycine max
/
Bacillus subtilis
/
Pseudomonas fluorescens
/
Fungos Mitospóricos
/
Antifúngicos
Idioma:
En
Revista:
Commun Agric Appl Biol Sci
Assunto da revista:
SAUDE AMBIENTAL
Ano de publicação:
2005
Tipo de documento:
Article
País de afiliação:
Irã