Organism Source of Isolation/ Crop on which effect was recorded Effect Reference
Enterobacter aerogenes Apples Reported to control P. cactorum infection of apples in nursery soils [4]
Serratia plymuthica Cotton Controls Rhizoctoniasolani [5]
Enterobacter cloacae Cucumbers Increased the yield of cucumbers [6]
Enterobacter ludwigii Lolium perenne L. First report on the PGPR features of E. ludwigii [7]
Enterobacter sp Coconut rhizosphere Production of phytohormones, siderophores and antibiotics [8]
Enterobacter sp. Broccoli  Promoted growth of Brassica oleracea (broccoli) [9]
Serratia plymuthica Peppers Biocontrol agent for management of Phytophtoracapsici [10]
Acinetobacter calcoaceticus Wheat rhizosphere Improved plant growth in pot and field studies. Has the ability to solubilise P, produce IAA and siderophores [11]
Enterobacter asburiae Mustard Possesses the inherent ability to produce growth regulators in the presence of fungicides [12]
Enterobacter arachidis sp. nov Groundnut A novel methylotrophic nitrogen-fixing bacterial strain [13]
Escherichia coli Maize Significantly enhanced plant growth and nutrient uptake [14]
Stenotrophomonas maltophilia Hazelnut seedlings Increased plant growth promotion [15]
Bacillus cereus Arabidopsis Induced resistance against a broad spectrum of pathogens including Pseudomonas syringaepv. tomato DC3000 [16]
Enterobacter cancerogenus Pigeon Pea Growth promotion observed in pigeon pea [17]
Enterobacter sp Maize  Enhanced nitrogen accumulation and significantly, improved growth of maize seedlings over controls [18]
Enterobacter radicincitans Wheat Biological nitrogen-fixing endophytic bacterium with growth-promoting effects on a variety of crops [19]
Pseudomonas aeruginosa Cowpea Solubilizes phosphate, produces IAA, siderophore, HCN and ammonia [20]
Aspergillus flavus , Aspergillus fumigatus Rhizosphere of sugarcane, groundnut and paddy fields P solubilization and IAA production [21]
Pseudomonas aeruginosa stain NJ-15 Soil isolate Antagonistic to a wide range of plant pathogenic fungi [22]
Pseudomonas aeruginosa strain 2apa Tomato Positive for root colonization, indole acetic acid, salicylic acid , siderophore production and inhibited the growth of wide range of plant pathogenic microorganisms [23]
Table 1: A non-exhaustive compilation of the reported instances of plant growth promotion by microbial strains with possible human health concerns