Chaenomeles speciosa fruit endophytic fungi isolation and characterization of their antimicrobial activity and the secondary metabolites composition

Beni-Suef University Journal of Basic and Applied Sciences

Table 2 Antibacterial activity of ethyl acetate extracts of C. speciosa fruit endophytic isolates¹

Endophyte name	Extractive substrate	Extract content, μg per disc	Bacillus subtilis	Erwinia dissolvens
Penicillium sp. I	Cultural medium	20.0	19.0 ± 3.61^a	14.67 ± 3.06^a
Penicillium sp. I	Mycelium biomass	6.0	9.33 ± 0.58^b	9.52 ± 0.50^b
Penicillium sp. II	Cultural medium	38.0	14.0 ± 1.00^ab	11.33 ± 1.15^ab
Penicillium sp. II	Mycelium biomass	6.0	12.33 ± 1.53^b	14.00 ± 2.00^ab
Ofloxacin			25.33 ± 2.08 ^c	23.33 ± 1.15^c
Ceftriaxone			25.33 ± 0.58 ^c	24.33 ± 2.08^c
Ethyl acetate			NA	NA

¹Data on the inhibition zone diameter (mm) are expressed as the means of triplicate ± (SD). Values with different superscripts in each column are significantly different according to Tukey's test (P < 0.05). NA no activity