Hygienic characteristics of radishes grown in soil contaminated with Stenotrophomonas maltophilia

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Abstract

Background: Stenotrophomonas maltophilia is a plant growth-promoter. This bacterium is also implicated in humandiseases. Thus, after the use of this bacterium in agriculture, the safety of the final products has to be verified. Due tothe ubiquitous presence of S. maltophilia in soil, in this study a massive contamination was simulated to evaluate thegrowth and safety of Raphanus sativus L..Results: Different inoculums and soil treatment conditions were tested. Soils were analysed weekly and the radishesat harvest for their microbial loads and presence/persistence of S. maltophilia LMG 6606. The concentration of thebacterium added in the different trials decreased during the first week, but increased thereafter and determined asignificant increase of growth parameters of radishes.Conclusions: The addition of S. maltophilia LMG 6606 to non-autoclaved soil enhanced the productivity of radishes.The bacterium did not internalize in the hypocotyls, but colonized the external surface ensuring the safety of theproducts. Thus, a sanitizing bath of hypocotyls before consumption is necessary.
Lingua originaleEnglish
Numero di pagine11
RivistaChemical and Biological Technologies in Agriculture
Volume2
Stato di pubblicazionePublished - 2015

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All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Food Science
  • Biochemistry
  • Agronomy and Crop Science

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