INVESTIGADORES
JUAREZ Marta Patricia
congresos y reuniones científicas
Título:
CLONING AND EXPRESSION ANALYSIS OF SEVERAL Beauveria bassiana GENES INVOLVED IN ALKANE degradation.
Autor/es:
NICOLÁS PEDRINI AND M. PATRICIA JUAREZ
Lugar:
Córdoba
Reunión:
Congreso; 44 Reunión Anual- Soc. Argentina de Investigac Bioquim. y Biol. Mol.; 2008
Institución organizadora:
Soc. Arg. Investigac Bioquim.
Resumen:
BIOCELL 32 (Suppl.), pp. 32, 2008
CLONING AND EXPRESSION ANALYSIS OF SEVERAL
Beauveria bassiana GENES INVOLVED IN ALKANE
DEGRADATIONGENES INVOLVED IN ALKANE
DEGRADATION
2 2 1 Pedrini NL , Keyhani NO , Juarez MP .Pedrini NL , Keyhani NO , Juarez MP .
1 2 INIBIOLP (CONICET-UNLP), Argentina. University of Florida,
USA. E-mail: nicopedrini@yahoo.comINIBIOLP (CONICET-UNLP), Argentina. University of Florida,
USA. E-mail: nicopedrini@yahoo.com
Entomopathogenic fungi have the ability to degrade insect cuticular
hydrocarbons and to utilize them for energy production and
incorporation into cellular components. The first oxidation round is
carried out by a cytochrome P450 (P450alk), after successive steps
the corresponding metabolites will eventually provide the
appropriate fatty acyl-CoA for complete degradation in the
peroxisomes, the site of b-oxidation in fungi. Eight gene fragments
displaying high homology to cytochrome P450alk as well as the
peroxisomal enzymes catalase and acyl CoA oxidase were
identified in a B. bassiana expressed sequence tagged (EST)
collection. Full-length sequences for each gene were isolated by 5
and 3-rapid amplification of cDNA ends (RACE). Expression
analysis of the genes by quantitative real-time RT PCR using fungal
cells grown on n-hexadecane (C16), n-eicosane (C20), ntetracosane
(C24) or n-octacosane (C28) revealed overlapping but
differential expression of the isolated genes. These data indicate thatb-oxidation in fungi. Eight gene fragments
displaying high homology to cytochrome P450alk as well as the
peroxisomal enzymes catalase and acyl CoA oxidase were
identified in a B. bassiana expressed sequence tagged (EST)
collection. Full-length sequences for each gene were isolated by 5
and 3-rapid amplification of cDNA ends (RACE). Expression
analysis of the genes by quantitative real-time RT PCR using fungal
cells grown on n-hexadecane (C16), n-eicosane (C20), ntetracosane
(C24) or n-octacosane (C28) revealed overlapping but
differential expression of the isolated genes. These data indicate thatB. bassiana expressed sequence tagged (EST)
collection. Full-length sequences for each gene were isolated by 5
and 3-rapid amplification of cDNA ends (RACE). Expression
analysis of the genes by quantitative real-time RT PCR using fungal
cells grown on n-hexadecane (C16), n-eicosane (C20), ntetracosane
(C24) or n-octacosane (C28) revealed overlapping but
differential expression of the isolated genes. These data indicate that
B. bassiana is likely to contain multiple hydrocarbon degradative
pathways with overlapping substrate specificities.is likely to contain multiple hydrocarbon degradative
pathways with overlapping substrate specificities.