Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Multilocus nested haplotype networks extended with DNA fingerprints show common origin and fine-scale, ongoing genetic divergence in a wild microbialmetapopulation
Autore:
Carbone, I; Kohn, LM;
Indirizzi:
Univ Toronto, Dept Bot, Mississauga, ON L5L 1C6, Canada Univ Toronto Mississauga ON Canada L5L 1C6 ississauga, ON L5L 1C6, Canada
Titolo Testata:
MOLECULAR ECOLOGY
fascicolo: 10, volume: 10, anno: 2001,
pagine: 2409 - 2422
SICI:
0962-1083(200110)10:10<2409:MNHNEW>2.0.ZU;2-B
Fonte:
ISI
Lingua:
ENG
Soggetto:
LIPOPROTEIN-LIPASE GENE; PHENOTYPIC ASSOCIATIONS; CLADISTIC-ANALYSIS; SCLEROTINIA-SCLEROTIORUM; PATHOGEN POPULATIONS; MITOCHONDRIAL-DNA; EVOLUTION; PLANT; RECOMBINATION; REPEATS;
Keywords:
fungi; genome size; IGS; microsatellite expansion; recombination block; Sclerotinia;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
37
Recensione:
Indirizzi per estratti:
Indirizzo: Carbone, I Univ Toronto, Dept Bot, 3359 Mississauga Rd N, Mississauga, ON L5L 1C6, Canada Univ Toronto 3359 Mississauga Rd N Mississauga ON Canada L5L 1C6
Citazione:
I. Carbone e L.M. Kohn, "Multilocus nested haplotype networks extended with DNA fingerprints show common origin and fine-scale, ongoing genetic divergence in a wild microbialmetapopulation", MOL ECOL, 10(10), 2001, pp. 2409-2422

Abstract

Nested haplotype networks for three loci in a haploid, fungal plant pathogen, Sclerotinia sclerotiorum, in two natural, Norwegian populations of the woodland buttercup, Ranunculus ficaria, were extended with DNA fingerprintsto determine fine-scale population divergence. To preserve the cladistic structure in the network for both nonrecombinant and postrecombinant haplotypes in highly recombinant clades, recombinant events were not removed ('peeled off'), but instead were examined in alternative (marginal) networks. Fungi from both sampling locations share a common origin with subsequent genetic divergence, consistent with expectations for metapopulation structure. Evidence for divergence includes (i) lack of shared fingerprints between the two locations, (ii) evolution of new fingerprints, via transposition and recombination, within 2 years on a fine spatial scale within one sampling location, and (iii) increase in the size of the intergenic spacer (IGS) in both sampling locations. Sites of microsatellite repeat expansion and of an insertion were consistent with the boundaries of two recombination blocks in the IGS. Both alternative networks based on the recombination blocks wereessential to finding all associations of DNA fingerprints with IGS size, sampling site, sampling year and mycelial compatibility group. Variation in the elongation factor 1 alpha and calmodulin loci supported the topologies and the recurrent, ongoing polarity of change in fingerprints and IGS size inferred from the IGS.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/04/20 alle ore 22:19:34