Table 1.

Bacterial species, abilities, experimental conditions, and results achieved by the application in crops.

PGPR	Abilities	Condition	Results	References
G. diazotrophicus and A. brasilense	Siderophore production	Hydroponia	Increased iron in the plants	[60]
Pseudomonas sp.	Siderophore production and PGPR properties	Vase with vermiculite	Iron acquisition	[78]
Lysinibacillus sp. and Paenibacillus dendritiformis	Seedling protection	Maize in vase	Improved seed germination	[19]
Bacillus subtilis	Seedling protection	Pot experiment	Protection against Cephalosporium maydis	[62]
Bacillus sp.	IAA production Phosphorus solubilization	Greenhouse	Increased rice seedling Increase P availability	[79]
Mesorhizobium panacihumi	Siderophore production	Pot tests	Reduced soil contamination	[67]
Bacillus sp. Citrobacter sp. Citrobacter sp. Flavobacterium sp. and Pantoea sp.	Phytohormones production; siderophore; hydrogen cyanide	Greenhouse	Reduced fungal phytopathogens	[20]
Pseudomonas sp.	Protection against fungicide	Greenhouse	Improved cultivation of radish plants	[65]
Pseudomonas fluorescens Rhizobium leguminosarum Bacillus brevis Azotobacter vinelandii	Siderophore production	Chamber	Protection against organophosphate pesticides	[80]
Anabaena azotica	Nitrogen fixation	Field experiment	Chemical nitrogen reduction	[41]
Brucella sp. and Pseudomonas brassicae	Siderophore production	Field experiment	High production in iron-deficient soil	[81]
Bacillus aryabhattai	Siderophore production	Field experiment	Increased production in iron-deficient soil	[59]
Rhodopseudomonas palustris	Phosphorus solubilization	Greenhouse	Improved soil fertility	[82]