application/pdf 147772 bytes Abstract: Aims: This research aimed to isolate and characterize nonrhizobial endophytic bacteria from root nodules of Medicago sativa L. and Lotus corniculatus L. with plant growth-promoting characteristics and to test its activity in a pot experiment with acid soil. Methods and Results: Out of 44 nonrhizobial isolates, the majority exhibited indole-3-acetic acid (IAA) production; 29 produced siderophores, few isolates performed phosphate solubilization and/or produced lytic enzymes, while 30% of isolates showed notable antifungal activity. The most promising strains were identified as members of Bacillus, Pseudomonas and Serratia genera, based on 16S rRNA. Bacillus megaterium DZK1BH exhibited the overall best attributes for plant growth promotion and positively influenced the growth of L. corniculatus and Dactylis glomerata. Conclusions: Root nodule endophytic B. megaterium DZK1BH could potentially be used as a biofertilizer for growing L. corniculatus L. and D. glomerata L. in acid soils, while Bacillus mojavensis L3 is a candidate for further antifungal potential investigation. Significance of Impact of the Study: The use of root nodule endophytic bacteria with PGP traits may find its future application in organic agriculture, as their utilization could decrease the use of chemical fertilizers and pesticides and simultaneously promote plant growth, especially in soils with low production quality. Sažetak eng info:eu-repo/semantics/article Journal of Applied Microbiology https://unilib.phaidrabg.rs/o:599 doi:10.1111/jam.15152 Knežević, Magdalena Berić, Tanja Buntić, Aneta Delić, Dušica Nikolić, Ivan Stanković, Slaviša Stajković-Srbinović, Olivera All rights reserved Potential of root nodule nonrhizobial endophytic bacteria for growth promotion of Lotus corniculatus L. and Dactylis glomerata L. Bacillus, Dactylis glomerata, endophytic bacteria, Lotus corniculatus, plant growth promotion, Pseudomonads, Rhizobia 2021