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Protein compounds of Bacillus subtilis with in vitro antifungal activity against Pseudocercospora fijiensis (Morelet)

  • Mileidy Cruz-MartínEmail author
  • Eilyn Mena
  • Mayra Acosta-Suárez
  • Tatiana Pichardo
  • Eloisa Rodriguez
  • Yelenys Alvarado-Capó
Environmental Microbiology - Short Communication

Abstract

The metabolites of Bacillus subtilis CCIBP-M27 were evaluated as an antagonist of Pseudocercospora fijiensis. The culture filtrate did not inhibit ascospore germination but significantly reduced conidial germination and mycelial growth. Through microscopic analysis, deformations were observed as vacuolization and swelling in P. fijiensis mycelia when exposed to culture filtrate during 48 h. A similar response was induced by peptide-type compounds found on Bacillus subtilis CCIBP-M27 culture filtrate. The results obtained suggest that the in vitro antifungal effect of the strain CCIBP-M27 against P. fijiensis is related to the action of diffused metabolites such as proteins or peptide substances.

Keywords

Biocontrol Black Sigatoka Metabolites Proteins 

Notes

Acknowledgements

Partial financial support for this work was an output of a scholarship from the Food Security Center from the University of Hohenheim, which is part of the DAAD (German Academic Exchange Service) program “exceed” and in cooperation with the host PhD Blondy Canto Canché at the Centro de Investigación Científica de Yucatán (CICY), México.

Compliance with ethical standards

Conflict of interest

The authors declare that there is no conflict of interest.

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Copyright information

© Sociedade Brasileira de Microbiologia 2019

Authors and Affiliations

  1. 1.Instituto de Biotecnología de las PlantasUniversidad Central Marta Abreu de Las VillasSanta ClaraCuba

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