Fusarium oxysporum f. sp. dianthi, pathogenic on carnation plants is very sensitive to Bacillus subtilis M51 inhibition. Fusarium oxysporum disease (fusariosis) is prevented for a period of two months after treatment of plants with Bacillus subtilis M51. The persistence of B. subtilis M51, marked for selenomycin resistance (MZ51) and inoculated on the roots of carnation cuttings was studied. Soil used was two types: naturally infested with Fusarium oxysporum and free from this pathogen. Bacterial cells presence on the roots was detected by direct plating and the presence of the pathogen in the roots was investigated by histological assays. Evidence gathered by these procedures suggest that plant protection is dependent on the physical presence of B. subtilis M51 cells on the roots
ANTAGONISTIC EFFECTS OF SOIL BACTERIA ON FUSARIUM-OXYSPORUM SCHLECHT F-SP DIANTHI (PRILL AND DEL) SNYD AND HANS .3. RELATION BETWEEN PROTECTION AGAINST FUSARIUM-WILT IN CARNATION AND BACTERIAL ANTAGONISTS COLONIZATION ON ROOTS
VOLTERRANI, MARCO;
1987-01-01
Abstract
Fusarium oxysporum f. sp. dianthi, pathogenic on carnation plants is very sensitive to Bacillus subtilis M51 inhibition. Fusarium oxysporum disease (fusariosis) is prevented for a period of two months after treatment of plants with Bacillus subtilis M51. The persistence of B. subtilis M51, marked for selenomycin resistance (MZ51) and inoculated on the roots of carnation cuttings was studied. Soil used was two types: naturally infested with Fusarium oxysporum and free from this pathogen. Bacterial cells presence on the roots was detected by direct plating and the presence of the pathogen in the roots was investigated by histological assays. Evidence gathered by these procedures suggest that plant protection is dependent on the physical presence of B. subtilis M51 cells on the rootsI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
