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Titolo:
INDUCTION AND GENETIC-CHARACTERIZATION OF ULTRAVIOLET-SENSITIVE MUTANTS IN THE ELM TREE PATHOGEN OPHIOSTOMA-ULMI (SENSU-LATO)
Autore:
BERNIER L; HUBBES M;
Indirizzi:
UNIV LAVAL,FAC FORESTERIE & GEOMAT,CTR RECH BIOL FORESTIERE,CITE UNIVQUEBEC CITY G1K 7P4 QUEBEC CANADA UNIV TORONTO,FAC FORESTRY TORONTO M5S 3B3 ON CANADA
Titolo Testata:
Mycological research
, volume: 98, anno: 1994,
parte:, 8
pagine: 943 - 953
SICI:
0953-7562(1994)98:<943:IAGOUM>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
FRAGMENT-LENGTH-POLYMORPHISMS; NON-AGGRESSIVE STRAINS; CERATOCYSTIS-ULMI; MITOCHONDRIAL-DNA; MOLECULAR RELATIONSHIPS; GEL-ELECTROPHORESIS; NUCLEAR-DNA; EAN RACES; IDENTIFICATION; DISEASE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
45
Recensione:
Indirizzi per estratti:
Citazione:
L. Bernier e M. Hubbes, "INDUCTION AND GENETIC-CHARACTERIZATION OF ULTRAVIOLET-SENSITIVE MUTANTS IN THE ELM TREE PATHOGEN OPHIOSTOMA-ULMI (SENSU-LATO)", Mycological research, 98, 1994, pp. 943-953

Abstract

The lethal and mutagenic effects of ultraviolet (uv) irradiation on Ophiostoma ulmi sensu lato were tested. Exposure to uv rays increased the frequency at which benomyl-resistant mutants were recovered in fivewild-type strains representing the non-aggressive species 0. ulmi andboth Eurasian and North American races of the aggressive 0. novo-ulmi. Treatment of yeast-like cells from wild-type strain MH 75 and laboratory strain LB 44-R-2 with the alkylating agent N-methyl-N'-nitro-N-nitrosoguanidine allowed the recovery of four uv-sensitive mutants. All mutants were photoreactivable, whereas one strain was resistant to caffeine. Meiotic analysis provided evidence that the four strains carried non-allelic mutations. The uvs1 and uvs3 loci were linked and found to occur on linkage group I. The uvs2 and uvs4 loci were assigned to linkage groups III and IV, respectively. Two of the uv-sensitive strains also appeared to be hypermutable and might therefore be useful for the induction of additional types of mutants in 0. ulmi sensu lato.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 24/11/20 alle ore 14:38:41