Antifungal Activity of Selected Indigenous Pseudomonas and Bacillus from the Soybean Rhizosphere

Table 2

Antagonism of isolates against different pathogenic fungi.

		BNM	BNM	BNM	BNM	BNM	BNM
		340	343	297	296	299	345
Ascomycota	M. phaseolina BNM401	+++	+++	+++	−	−	+++
	S. minor BNM402	++	++	+	++	++	++
Mitosporic Fungi	F. oxysporum BNM403	++	++	++	++	++	++
	F. solani BNM400	++	++	++	+++	++	++
	F. solani BNM405	++	++	++	−	+	++
	F. solani BNM406	++	++	++	+	−	++
	F. oxysporum BNM404	++	++++	++	+	++	++
Oomycota	P. ultimum BNM407	+++	++	+	++	++	++

Relative growth in the presence or absence of bacteria as follows: same as control, (−); 99% to 61%, (+); 60% to 31%, (++); 30% to 1%, (+++); total inhibition, (++++). Experiments were repeated three times for each bacterial fungal combination on PDA medium. Bacterial strains used: B. amyloliquefaciens BNM340, B. cereus BNM343, P. fluorescens BNM296 and BNM297, and B. cepacia BNM299 and BNM345. Siderophore producers (BNM296, 297, 299, and 345) were also tested in KB medium and were found to be effective antagonists in comparison with the results in PDA. The fungal strains tested also belonged to the Banco Nacional de Microorganismos, INBA-CONICET, Argentina (BNM).