Web of Science: 0 cites, Scopus: 0 cites, Google Scholar: cites,
Transcriptome analysis of non-ochratoxigenic Aspergillus carbonarius strains and interactions with other ochratoxigenic black aspergilli
Castellà Gómez, Gemma (Universitat Autònoma de Barcelona. Departament de Sanitat i d'Anatomia Animals)
Bragulat, M. Rosa (Universitat Autònoma de Barcelona. Departament de Sanitat i d'Anatomia Animals)
Cigliano, Riccardo Aiese (Sequentia Biotech SL)
Cabañes Sáenz, Francisco Javier (Universitat Autònoma de Barcelona. Departament de Sanitat i d'Anatomia Animals)

Data: 2020
Resum: Aspergillus carbonarius consistently produces large amounts of ochratoxin A (OTA), a mycotoxin with nephrotoxic effects on animals and humans. In the present study, we analyzed the transcriptional changes associated to OTA production in three atypical non-ochratoxigenic strains of A. carbonarius. In addition, in vitro interactions between ochratoxigenic strains of A. carbonarius and A. niger and non-chratoxigenic strains of A. carbonarius and A. tubingensis were studied in order to evaluate their potential for controlling OTA production. RNA-seq analysis revealed that there are 696 differentially expressed genes identified in the three non-OTA producing strains, including 280 up-regulated and 333 down-regulated genes. A functional and gene ontology enrichment analysis revealed that the processes related to metabolic and oxidation processes, associated with functions such oxidoreductase and hydrolase activity were down regulated. All the genes related with OTA biosynthesis in A. carbonarius were the most down-regulated genes in non-ochratoxigenic strains. We also showed that these strains possess a deleterious mutation in the AcOTApks gene required for OTA biosynthesis. Moreover, one of these strains gave the best control of OTA production resulting in an OTA reduction of 98-100% in co-inoculation with an ochratoxigenic strain of A. niger and an OTA reduction of 79-89% with an ochratoxigenic strain of A. carbonarius. Results of this study provided novel insights into the knowledge of the OTA biosynthetic pathway in these non-ochratoxigenic wild strains, and showed the biocontrol potential of these strains.
Nota: Número d'acord de subvenció Spanish Government/AGL2014-52516-R
Drets: Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original. Creative Commons
Llengua: Anglès.
Document: article ; recerca ; submittedVersion
Matèria: Aspergillus carbonarius ; Ochratoxin A ; Transcriptome ; Fungal interactions ; Biological control agents
Publicat a: International Journal of Food Microbiology, Núm. 317 (January 2020)

DOI: 10.1016/j.ijfoodmicro.2019.108498


39 p, 1.2 MB

El registre apareix a les col·leccions:
Documents de recerca > Documents dels grups de recerca de la UAB > Centres i grups de recerca (producció científica) > Ciències de la salut i biociències > Grup de Micologia Veterinària
Articles > Articles de recerca
Articles > Articles publicats

 Registre creat el 2020-01-08, darrera modificació el 2020-03-30



   Favorit i Compartir