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November 4, 2021Biocontrol Science and TechnologyOpen Access

Local Bacillus species as potential biocontrol agents for Meloidogyne enterolobii in melon (Cucumis melo L.)

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Authors

OJOsmar Vieira de Carvalho JúniorASAlícia Vieira de SáAPAna Rosa Peixoto

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Overview

Experimental study reveals effective biocontrol of Meloidogyne enterolobii in melon roots by Bacillus isolates, suggesting a viable eco-friendly alternative to chemical nematicides.

Key Points

  • To characterize 23 local Bacillus isolates and evaluate their secondary metabolite production and biocontrol efficacy against the root-knot nematode Meloidogyne enterolobii in melon plants.
  • Characterized 23 local Bacillus isolates for carbon source utilization and secondary metabolite profiles, followed by in vitro direct confrontation assays with M. enterolobii juveniles.
  • Evaluated greenhouse pot-grown melon plants 51 days after nematode inoculation for gall count, egg masses, root and soil juvenile densities, reproduction factor, and plant biomass.
  • All isolates shared five common carbon sources, and the combined in vitro nematostatic and nematicidal effects exceeded 90%.
  • Seven isolates (LCB 03, LCB 40, LCB 45, LCB 47, LCB 51, LCB 56, and LCB 5(3)) significantly reduced root gall numbers in potted melon plants without producing an increase in plant biomass.

Cite This Study

Júnior et al. (2021) studied this question.

synapsesocial.com/papers/6a87f392729e8aa7bb58279ahttps://doi.org/10.1080/09583157.2021.1999394
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