Diversity and Enzymatic Profiling of Halotolerant Micromycetes from Sebkha El Melah, a Saharan Salt Flat in Southern Tunisia

Table 3

Effect of alkaline, thermal, and oxidative stresses on fungal growth.

Strain code	Strain	Alkaline stress (1)	Thermal stress (2)		Oxidative stress (3)
		pH 10	4°C	45°C	H2O2  [10 mM]	Paraquat [500 µM]
JA1	Penicillium  chrysogenum	43	39	—	66	74
JA3	Penicillium  chrysogenum	42	50	—	84	71
JA22	Penicillium  chrysogenum	47	45	—	68	53
JA5	Penicillium canescens	26	28	—	59	63
JA15	Penicillium sp.	43	100	—	100	100
JA8	Cladosporium halotolerans	34	26	—	44	40
JA2	Cladosporium  sphaerospermum	21	24	—	52	48
JA13	Cladosporium sphaerospermum	21	43	—	55	44
JA14	Cladosporium cladosporioides	34	38	—	20	31
JA18	Cladosporium cladosporioides	—	41	—	18	16
JA4	Aspergillus flavus	46	22	—	47	39
JA10	Aspergillus fumigatus	89	41	61	100	100
JA11	Aspergillus fumigatiaffinis	94	26	100	100	100
JA19	Alternaria alternata	49	35	—	69	89
JA20	Alternaria alternata	58	48	—	100	100
JA23	Alternaria alternata	100	83	40	57	52
JA6	Alternaria tenuissima	57	30	—	81	100
JA9	Embellisia phragmospora	58	67	—	100	100
JA12	Ulocladium consortiale	44	37	36	56	100
JA17	Ulocladium sp.	93	28	100	81	100
JA7	Engyodontium album	34	18	—	66	53

Relative growth of fungal strains under different stresses after 7 days incubation was expressed as follows: (1) (⌀ colony at pH 10/⌀ colony at pH 5) × 100; (2) (⌀ colony at 45°C or 4°C/⌀ colony at 30°C) × 100; (3) (⌀ colony with H₂O₂ or paraquat/⌀ colony without stress) × 100. —: not significant growth.