Candidate rhizobacteria as plant growth-promoters and root-knot nematode controllers in tomato plants

Meloidogyne incognita root-knot nematode is one of the main causes tomato root damage and consequently crop production losses. Thus, in vitro conditions, number nematodes hatched eggs (%) at 4 6 days mortality (J2 stage) 8, 18, 24 h, were evaluated Petri dishes containing candidate rhizobacteria Enterobacter asburiae (BA4-19 PM3-14), Acinetobacter calcoaceticus (BM2-12), Klebsiella variicola (BO3-4) Serratia marcescens (PM3-8). The well-known Pseudomonas protegens (CHA0) P. veronii (R4) used as controls. In greenhouse plant height, weight, symptoms, well gall numbers, determined plants infected by M. treated with seven rhizobacteria. addition, all variables correlated using Pearson's analysis. general, a significant correlation was observed among both experiments, showing antagonistic capacity strains against nematode. It seems, that PM3-8 PM3-14 reduce hatching, cause J2 if compared CHA0 R4 strains. Likewise, BM2-12 strain shows higher height smaller galls their roots. This study provides evidence egg can be growth-promoter potential plants.