Ingeniería genética en hongos filamentosos: clonamiento del gen de invertasa de neurospora crassa / Genetic engineering in filamentous fungi: cloning of the invertase gene from Neurospora crassa

RESUMO

The invertase wild type gene of N. crassa was cloned into the YRp7 yeast vector. This recombinant plasmid was selected by functional complementation of an invertaseless mutant strain of S. cerevisiae. The isolated recombinant plasmid (named pNC2) carries a 7.6 Kb BamHI DNA fragment from N. crassa. The cloned DNA hydbridized with the N. crassa genomic DNA and transformed an invertase mutant of N. crassa Inv- to Inv+. Transformation of N. crassa Inv- to Inv+ seems to take at least two different integration events. One of them involves an integration closely linked to inv locus, and the other one apparently involves as integration of cloned DNA at a genomic site different that the inv locus