INVESTIGADORES
MORENO Maria virginia
congresos y reuniones científicas
Título:
Presence of an IC2-type intron in the sequences of Fusarium poae mitochondrial small subunit rDNA.
Autor/es:
STENGLEIN S.A.; CHANDLER E; NICHOLSON P; MORENO, M.V.; SALERNO, G.L
Lugar:
Mar del Plata
Reunión:
Congreso; VI Congreso Latinoamericano de Micología; 2008
Institución organizadora:
Asociación Latinoamericana de Micología
Resumen:
Among Fusarium species, F. poae is one of the causal agents of the Fusarium Head Blight disease and an important mycotoxins (such as type A and B trichothecenes) producer species. In a phylogenetic study based on mtSSU rDNA and EF-1á sequences obtained from 48 Argentinean and 50 European strains, we found that 9 Argentinean F. poae strains present an insert of ±1600 bp in their mtSSU sequences. A BLASTx search using public databases and the insert sequence as query showed an E value=2 e-74 and 6 e-72 with LAGLIDAG endonuclease from Podospora anserine and Gibberella zeae, respectively. Further bioinformatic analyses using the Rfam and RNAweasel programs revealed that the insert sequence arranged with the group I catalytic intron IC2. The presence of this intron in the mtSSU sequence may lead to interesting evolutionary conclusions within Argentinean F. poae strains. This is the first report on the existence of introns in the mtSSU rDNA sequence of F. poae.