Bacterial spot caused by Xanthomonas
arboricola pv. pruni (Xap) is considered as a major problem in
peach orchards. Copper and antibiotics are used to control, and biocontrol
should be a new alternative with low environment impact. The objective was
evaluated by the antibiotic activity of the metabolite produced by Pseudomonas aeruginosa LV strain. The free cells supernatant was
fractionated with a serial organic solvent with crescent polarity and a dichloromethane phase was concentrated and lyophilised, and after was fractionated
using vacuum liquid chromatography. The antibiotic activity of the
F3 fraction containing an organometallic compound was tested on Xap in vitro and in a greenhouse
conditions. Plants were sprayed with F3 before or after Xap infection and the results showed changes in exopolysaccharides
and cell morphology. The F3 concentration of 450 μg·mL-1 was more effective. The results showed
that F3 fraction could be a new alternative to control bacterial spot.
Cite this paper
Silva Vasconcellos, F. , de Oliveira, A. , Lopes-Santos, L. , Oliveira Beranger, a. , Torres Cely, M. , Simionato, A. , Pistori, J. , Spago, F. , de Mello, J. , San Martin, J. , Jesus Andrade, C. and Andrade, G. (2014) Evaluation of antibiotic activity produced by Pseudomonas aeruginosa LV strain against Xanthomonas arboricola pv. pruni. Agricultural Sciences
, 71-76. doi: 10.4236/as.2014.51008
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