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d'Errico, G., V. Aloj, V. Ventorino, A. Bottiglieri, E. Comite, A. Ritieni, R. Marra, et al.
PLoS ONE 15(2): e0228936(2020)

Three potential methyl t-butyl ether (MtBE)-degrading bacterial strains isolated from hydrocarbon-contaminated soil were tested for MtBE degradation ability, in vitro and in vivo bio-control activity, and induced systemic resistance in tomato plants. Bacillus aryabhattai R1B, S. novella R8b, and M. mucogenicum. R8i grew using MtBE as a carbon source, exhibiting different growth behavior and contaminant degradation ability. Their biocontrol ability was tested against various fungal pathogens (Rhizoctonia solani and Pythium ultimum) and foliar pathogens (B. cinerea and Alternaria alternata). Both S. novella R8b and B. aryabhattai were effective in reducing the development of necrotic areas on leaves within 48 hours from B. cinerea and A. alternata inoculation. M. mucogenicum effectively controlled B. cinerea after 72 hours. Similar results were achieved using P. ultimum, where the application of isolated bacteria increased seed germination. Only M. mucogenicum elicited tomato plants resistance against B. cinerea. All selected bacterial strains were ineffective against R. solani.

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