Effect of temperature and water activity on the production of fumonisins by Aspergillus niger and different Fusariumspecies

Table 1 Fumonisin production by Aspergillus niger and Fusarium spp. on CYAS, PDA and RC after 7 days growth at 25°C.

Fungi	Isolate	CYAS μg/ml	RC μg/ml	PDA μg/ml
A. niger	NRRL 3	2.9 ± 0.4	7.9 ± 0.7	0.86 ± 0.02
	NRRL 567	25 ± 0.9	36 ± 2	1.9 ± 0.5
	NRRL 2001	7.6 ± 0.7	6.1 ± 0.9	3.1 ± 0.3
	IBT 24631	5.2 ± 0.2	6.7 ± 0.7	1.3 ± 0.6
	IBT 24634	6.4 ± 0.1	5.3 ± 0.4	0.46 ± 0.02
F. proliferatum	IBT 8904	n.d.	9.9 ± 3	21 ± 0.5
	IBT 9109	n.d.	0.028 ± 0.007	n.d.
	IBT 9337	n.d.	0.021 ± 0.01	n.d.
	IBT 9393	n.d.	0.03 ± 0.001	2.0 ± 0.04
	IBT 9397	n.d.	46 ± 3	33 ± 0.5
	IBT 41107	n.d.	5.4 ± 1	6.7 ± 0.6
F. verticillioides	IBT 9400	n.d.	0.035 ± 0.005	35 ± 0.7
	IBT 9492	n.d.	0.028 ± 0.004	4.9 ± 0.2
	IBT 9496	n.d.	0.033 ± 0.0003	n.d.
	IBT 9502	n.d.	2.2 ± 0.4	18 ± 1
	IBT 9505	n.d.	0.078 ± 0.09	9.5 ± 3
	IBT 41110	n.d.	0.12 ± 0.07	4.5 ± 0.7
F. dlaminii	IBT 2937	n.d.	n.d.	n.d.
	IBT 2938	n.d.	n.d.	n.d.
F. napiforme	IBT 2931	n.d.	0.24 ± 0.06	6.2 ± 0.9
	IBT 2932	n.d.	0.13 ± 0.1	0.081 ± 0.02
F. nygamai	IBT 2933	n.d.	0.033 ± 0.006	n.d.
	IBT 2934	n.d.	22 ± 2	5.6 ± 0.6
	IBT 8290	n.d.	0.041 ± 0.006	0.047 ± 0.001
	IBT 8554	n.d.	0.033 ± 0.01	0.039 ± 0.003
	IBT 8557	n.d.	0.01 ± 0.01	0.14 ± 0.002
	IBT 8566	n.d.	3.1 ± 1	6.2 ± 0.5
	IBT 9394	n.d.	0.30 ± 0.08	n.d.
	IBT 9395	n.d.	0.03 ± 0.003	16 ± 0.6
F. oxysporum	IBT 9514	n.d.	2.8 ± 0.4	37 ± 0.8

The concentration of FB₂ was detected in the methanol:water (3:1) extract. The values are means of the replicates plus/minus the standard deviation. The replicates are made in biological duplicates on two separate plates.
n.d. not detected.
Standard deviation calculated on two measurements

ISSN: 1471-2180