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Titolo:
Homoeoallelic gene Ncc-tmp of Triticum timopheevii conferring compatibility with the cytoplasm of Aegilops squarrosa in the tetraploid wheat nuclear background
Autore:
Asakura, N; Nakamura, C; Ohtsuka, I;
Indirizzi:
Kanagawa Univ, Fac Engn, Biol Lab, Kanagawa Ku, Yokohama, Kanagawa 2218686, Japan Kanagawa Univ Yokohama Kanagawa Japan 2218686 ma, Kanagawa 2218686, Japan Kobe Univ, Fac Agr, Dept Biol & Environm Sci, Lab Plant Genet,Nada Ku, Kobe, Hyogo 6578501, Japan Kobe Univ Kobe Hyogo Japan 6578501 et,Nada Ku, Kobe, Hyogo 6578501, Japan
Titolo Testata:
GENOME
fascicolo: 3, volume: 43, anno: 2000,
pagine: 503 - 511
SICI:
0831-2796(200006)43:3<503:HGNOTT>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
ALLOPLASMIC DURUM-WHEAT; BARLEY HORDEUM-VULGARE; RFLP ANALYSIS; GROUP-1 CHROMOSOMES; POLYPLOID WHEATS; CHLOROPLAST DNA; VI GENES; EVOLUTION; GENOME; PHYLOGENY;
Keywords:
nucleus-cytoplasm (NC) compatibility; Ncc genes; Aegilops squarrosa; Triticum timopheevii; durum wheat;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
48
Recensione:
Indirizzi per estratti:
Indirizzo: Asakura, N Kanagawa Univ, Fac Engn, Biol Lab, Kanagawa Ku, 3-27-1 Rokkakubashi, Yokohama, Kanagawa 2218686, Japan Kanagawa Univ 3-27-1 Rokkakubashi Yokohama Kanagawa Japan 2218686
Citazione:
N. Asakura et al., "Homoeoallelic gene Ncc-tmp of Triticum timopheevii conferring compatibility with the cytoplasm of Aegilops squarrosa in the tetraploid wheat nuclear background", GENOME, 43(3), 2000, pp. 503-511

Abstract

A nuclear gene, Ncc-tmp1A, of Triticum timopheevii is required for the nucleus-cytoplasm (NC) compatibility in tetraploid NC hybrids with the cytoplasm of Aegilops squarrosa. A euploid NC hybrid of T. durum was previously produced by introgressing the gene from chromosome 1A of T. timopheevii. To examine the possible presence of a functional homoeoallele in the G genome of T. timopheevii, segregation of seed viability was studied as a marker phenotype in BC(1)s involving the two types of NC hybrids, (Ae. squarrosa) - T. timopheevii and (Ae. squarrosa) - T. turgidum. The result of these test crosses suggested that the G genome possesses a functional homoeoallele Ncc-tmp1G. Segregation of two RAPD (random amplified polymorphic DNA) markers that were closely linked to Ncc-tmp1A was further studied among the viable BC(1)s obtained from a test cross of (Ae. squarrosa) - T. timopheevii x T. turgidum. Some viable BC1 segregants without the markers were obtained, suggesting a limited degree of transmission of chromosome 1G carrying Ncc-tmp1G. However, a similar RAPD analysis of BC(1)s obtained after backcrosses of reciprocal F(1)s of T. timopheevii / T. turgidum with T. turgidum showed random marker segregation. Thus, it was concluded that Ncc-tmp1A is not required for compatibility with its own cytoplasm. Southern blot analysis of theeuploid NC hybrid using RFLP (restriction fragment length polymorphism) markers on the homoeologous group 1 chromosomes showed that Ncc-tmp1A locatesin the centromeric region.

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Documento generato il 04/12/20 alle ore 03:59:50