Characteristics                                    ERFP isolates
P54 P36 P21 P22 P14 *Ref. 1 **Ref. 2
Fluorescent pigment + + + + + + +
Cell shape Rod Rod Rod Rod Rod Rod Rod
Gram stain + + + + + + +
Motility + + + + + + +
Fluorescent pigments + + + + + + +
Carbon sources utilization:
Glucose + + + + + + +
Arabinose ± ± - - - ± -
Mannose ± ± - - - ± -
Manitol + + + + + - +
N-acetyl-glucosamine - - + + + - +
Maltose - - - - - - -
Gluconate + + + + + + +
Caprate + ± + + + + +
Adipate - - + + + - +
Malate + + + + + + +
Citrate + + + + + + +
Phenyl-acetate ± ± - - - ± -
Metabolites and hydrolytic Enzymes:
Arginine dihydrolase + + + + + + +
Urease + + + + + - -
Esculin Hydrolysis + + - - - - -
Gelatin hydrolysis + + + + + - +
(PNPG) β -galactosidase - - - - - - -
Cytochrome oxidase + + + + + + +
Catalase + + + + + + +
Chitinase + + + + + + +
Activities related to plant growth promotion and iduction of ISR:
Siderophore production + + + + + + +
Cyanide  production + + - - - + +
Indoleacetic acid production + + + + + + +
*Ref. 1 = Pseudomonas putida
**Ref. 2 = Pseudomonas aeruginosa (Bacterial culture collection of Department of Agricultural Microbiology, Faculty of Agriculture, Fayoum University, Fayoum, Egypt. Carbon sources and other tests were applied according to API 20NE system and Gerhardt et al. (45). The Score of the result tests: -, negative growth or hydrolysis; +, positive growth or hydrolysis; ± weak growth or hydrolysis
Table 4: Biochemical and physiological characteristics of selected ERFP isolates.