Genomic diversity in ochratoxigenic and non ochratoxigenic strains of Aspergillus carbonarius
Castellá, 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)
Puig Carles, Laura (Universitat Autònoma de Barcelona. Departament de Sanitat i d'Anatomia Animals)
Sanseverino, Walter (Sequentia Biotech SL)
Cabañes Sáenz, Francisco Javier (Universitat Autònoma de Barcelona. Departament de Sanitat i d'Anatomia Animals)

Date:	2018
Abstract:	Ochratoxin A (OTA) is a mycotoxin with nephrotoxic effects on animals and humans. Aspergillus carbonarius is the main responsible for OTA contamination of grapes and derived products. We present the genome resequencing of four A. carbonarius strains, one OTA producer and three atypical and unique non-OTA producing strains. These strains were sequenced using Illumina technology and compared with a reference genome of this species. We performed some specific bioinformatics analyses in genes involved in OTA biosynthesis. Data obtained in this study revealed the high genomic diversity within A. carbonarius strains. Although some gaps of more than 1,000 bp were identified in non-ochratoxigenic strains, no large deletions in functional genes related with OTA production were found. Moreover, the expression of five genes of the putative OTA biosynthetic cluster was down regulated under OTA-inducing conditions in the non-ochratoxigenic strains. Knowledge of the regulatory mechanisms involved in OTA biosynthesis will provide a deeper understanding of these nonochratoxigenic strains.
Grants:	Ministerio de Economía y Competitividad AGL2014-52516-R
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Micologia veterinària ; Genomes ; Aspergillus carbonarius
Published in:	Scientific reports, Abril 2018, p. 1-11, ISSN 2045-2322

DOI: 10.1038/s41598-018-23802-8
PMID: 29615708

11 p, 1.7 MB

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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Health sciences and biosciences > Veterinary Mycology Group
Articles > Research articles
Articles > Published articles