Section 14
Chapter 13,186

Resolution of four large chromosomes in penicillin-producing filamentous fungi: the penicillin gene cluster is located on chromosome II (9.6 Mb) in Penicillium notatum and chromosome I (10.4 Mb) in Penicillium chrysogenum

Fierro, F.; Gutiérrez, S.; Díez, B.; Martín, J.F.

Molecular and General Genetics Mgg 241(5-6): 573-578


ISSN/ISBN: 0026-8925
PMID: 8264531
Accession: 013185218

Download citation:  

Four chromosomes were resolved by pulsed field gel electrophoresis in Penicillium notatum (10.8, 9.6, 6.3 and 5.4 Mb in size) and in five different strains of Penicillium chrysogenum (10.4, 9.6, 7.3 and 6.8 Mb in the wild type). Small differences in size were found between the four chromosomes of the five P. chrysogenum strains. The penicillin gene cluster was localized by hybridization with a pcbAB probe to chromosome 11 of P. notatum and to chromosome I of all P. chrysogenum strains except the deletion mutant P. chrysogenum npe10, which lacks this DNA region. The pyrG gene was localized to chromosome I in P. notatum and to chromosome II in all P. chrysogenum strains except in the mutant AS-P-78 where the probe hybridized to chromosome III. A major chromosomal rearrangement seems to have occurred in this high penicillin producing strain. A fast moving DNA band observed in all gels corresponds to mitochondrial DNA. The total genome size has been calculated as 32.1 Mb in P. notatum and 34.1 Mb for the P. chrysogenum strains.

PDF emailed within 1 workday: $29.90