Table 4.

Plant growth-promoting (PGP) activity and inhibitory effect on the growth of plant pathogens of culturable epiphytic bacteria isolated from treated and no-treated lettuce plants.

Taxonomic affiliation	Morphotype	PGP activity		Biocontrol activity (% of inhibition)
		SI∗	IAA§ (mg/L)	F. oxysporum	P. cinnamomi	E. amylovora
Pantoea	C1	0	106 ± 0.1	30–60%	<30%	>60%
Enterobacter	C4	0	0	0	0	0
	C6	0	0	0	0	0
Pseudomonas	F1G	4.3 ± 0.1	20 ± 0.1	30–60%	30–60%	0
	F4	0	0	0	0	0
	F5	4.8 ± 0.5	5.4 ± 0	<30%	<30%	0
	F9	0	0	<30%	<30%	0
	F16	3.0 ± 0.2	2.7 ± 0.1	30–60%	30–60%	30–60%
	C3	0	0	0	0	0
	C7	0	0	0	0	0
Acinetobacter	F2	2.5 ± 0.1	<5	0	0	0
	F7	0	<5	0	0	0
Sphingobacterium	F8	2.5 ± 0.1	0	0	0	0
Bacillus	C5a	0	0	>60%	<30%	>60%
	C5b	0	0	>60%	<30%	>60%
	F13	0	0	>60%	>60%	>60%
	F14	0	0	>60%	>60%	>60%
	F12	0	0	0	0	0
Exiguobacterium	F15	0	0	0	0	0
	F11	0	0	0	0	0
	C2	0	0	0	0	0
Micrococcus (2)	F3	2.7 ± 0.1	36 ± 0	<30%	<30%	>60%
	F10	4.7 ± 0	31 ± 0	0	0	0

^∗Phosphate solubilization index; ^§ indole acetic acid production.