Careful with that axe, gene. Genome perturbation after a PEG-mediated protoplasts transformation in Fusarium verticillioides

Paola Battilani, Chiara Dall'Asta, Valeria Scala, Alessandro Grottoli, Riccardo Aiese Cigliano, Irantzu Anzar, Marzia Beccaccioli, Corrado Fanelli, Chiara Dall’Asta, Massimo Reverberi, Walter Sanseverino

Risultato della ricerca: Contributo in rivistaArticolo in rivistapeer review

7 Citazioni (Scopus)

Abstract

Fusarium verticillioides causes ear rot disease in maize and its contamination with fumonisins, mycotoxins harmful for humans and livestock. Lipids, and their oxidized forms, may drive the fate of this disease. In a previous study, we have explored the role of oxylipins in this interaction by deleting by standard transformation procedures a linoleate diol synthase-coding gene, lds1, in F. verticillioides. A profound phenotypic diversity in the mutants generated has prompted us to investigate more deeply the whole genome of two lds1-deleted strains. Bioinformatics analyses pinpoint significant differences in the genome sequences emerged between the wild type and the lds1-mutants further than those trivially attributable to the deletion of the lds1 locus, such as single nucleotide polymorphisms, small deletion/insertion polymorphisms and structural variations. Results suggest that the effect of a (theoretically) punctual transformation event might have enhanced the natural mechanisms of genomic variability and that transformation practices, commonly used in the reverse genetics of fungi, may potentially be responsible for unexpected, stochastic and henceforth off-target rearrangements throughout the genome.
Lingua originaleEnglish
pagine (da-a)183-197
Numero di pagine15
RivistaToxins
DOI
Stato di pubblicazionePubblicato - 2017

Keywords

  • gene deletion, parasexual cycle, in vitro evolution, mitotic recombination, bioinformatics, Fusarium database

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