Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
INHERITANCE OF CHROMOSOME-LENGTH POLYMORPHISMS IN OPHIOSTOMA-ULMI (SENSU-LATO)
Autore:
DEWAR K; BERNIER L;
Indirizzi:
UNIV LAVAL,FAC FORESTERIE & GEOMAT,CTR RECH BIOL FORESTIERE,PAVILLON CHARLES EUGENE MARCHAND LAVAL PQ G1K 7P4 CANADA
Titolo Testata:
Current genetics
fascicolo: 6, volume: 27, anno: 1995,
pagine: 541 - 549
SICI:
0172-8083(1995)27:6<541:IOCPIO>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Soggetto:
DUTCH ELM DISEASE; MATING-TYPE REGION; RICE BLAST FUNGUS; ELECTROPHORETIC KARYOTYPE; SACCHAROMYCES-CEREVISIAE; NEUROSPORA-CRASSA; GEL-ELECTROPHORESIS; CERATOCYSTIS-ULMI; COCHLIOBOLUS-HETEROSTROPHUS; LEPTOSPHAERIA-MACULANS;
Keywords:
PULSED-FIELD GEL ELECTROPHORESIS; ELECTROPHORETIC KARYOTYPES; CHROMOSOME-LENGTH POLYMORPHISMS; OPHIOSTOMA ULMI (SENSU LATO);
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
72
Recensione:
Indirizzi per estratti:
Citazione:
K. Dewar e L. Bernier, "INHERITANCE OF CHROMOSOME-LENGTH POLYMORPHISMS IN OPHIOSTOMA-ULMI (SENSU-LATO)", Current genetics, 27(6), 1995, pp. 541-549

Abstract

We have investigated the mitotic and meiotic transmission of chromosome-length polymorphisms in Ophiostoma ulmi s.l., the causal agent of Dutch elm disease. The North-American aggressive (NAN) strain CESS16K has an atypical electrophoretic karyotype, carrying two chromosome-sized DNAs (chDNAs) that have not been observed in other members of the NAN biotype. Independent CESS 16K chDNA preparations, even after repeated inoculation and recovery from the elm host, and analysis of 16 progeny strains after a cross between the NAN strains FG245B(r)-O and CESS 16K, demonstrated that these unique chDNAs are integral components of the CESS 16K genome. Analysis of the progeny, by electrophoretic karyotyping and hybridizations with probes specific to individual chDNAs, presented evidence that genome rearrangements can occur as a consequence of meiosis. Even though novel electrophoretic karyotypes and a novel-sized chromosome were observed in the karyotypes of the progeny strains, the low level of reassortment between the chromosomes carrying length polymorphisms presented evidence that there are constraints to genome plasticity for this fungus.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 24/11/20 alle ore 13:41:05