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Titolo:
Cytogenetic and molecular mapping of the leaf rust resistance gene Lr39 inwheat
Autore:
Raupp, WJ; Sukhwinder-Singh; Brown-Guedira, GL; Gill, BS;
Indirizzi:
Punjab Agr Univ, Ctr Biotechnol, Ludhiana 141004, Punjab, India Punjab AgrUniv Ludhiana Punjab India 141004 dhiana 141004, Punjab, India Kansas State Univ, Dept Agron, USDA ARS, Manhattan, KS 66506 USA Kansas State Univ Manhattan KS USA 66506 SDA ARS, Manhattan, KS 66506 USA
Titolo Testata:
THEORETICAL AND APPLIED GENETICS
fascicolo: 2-3, volume: 102, anno: 2001,
pagine: 347 - 352
SICI:
0040-5752(200102)102:2-3<347:CAMMOT>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
F-SP TRITICI; HEXAPLOID WHEAT; COMMON WHEAT; AEGILOPS-SQUARROSA; UNITED-STATES; TAUSCHII; VIRULENCE; DIVERSITY; MARKERS; LR43;
Keywords:
Triticum aestivum; disease resistance; microsatellite markers; telocentric analysis; Aegilops tauschii;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
26
Recensione:
Indirizzi per estratti:
Indirizzo: Gill, BS Kansas State Univ, Dept Plant Pathol, Throckmorton Plant Sci Ctr 4307, Wheat Genet Resource Ctr, Throckmorton Hall, Manhattan, KS 66506 USA Kansas State Univ Throckmorton Hall Manhattan KS USA 66506 06 USA
Citazione:
W.J. Raupp et al., "Cytogenetic and molecular mapping of the leaf rust resistance gene Lr39 inwheat", THEOR A GEN, 102(2-3), 2001, pp. 347-352

Abstract

Leaf rust, caused by the fungus Puccinia triticina Eriks, is one of the most serious diseases of wheat (Triticum aestivum AABBDD, 2n=6x=42) worldwide. Growing resistant cultivars is an efficient and economical method of reducing losses to leaf rust. Here we report a new leaf rust resistance gene, Lr39, transferred from Aegilops tauschii into common wheat. Lr39 conditions both seedling and adult plant resistance to the leaf rust pathogen. The inter- and intra-chromosomal mapping of the Lr39 gene showed that it is different from all previously described Lr genes. We used monosomic analysis for the inter-chromosomal mapping and wheat microsatellite markers for the intra-chromosomal mapping. The monosomic and ditelosomic analysis indicated that Lr39 is independent of the centromere on the short arm of chromosome 2D. Eight microsatellite markers for 2DS were used for linkage analysis on a population of 57 F-2 plants derived from a cross of an Ae. tauschii-derived wheat, cv. Wichita line TA4186 (possessing Lr39), with Wichita monosomics for the D-genome chromosomes. The microsatellite marker analysis confirmed the location of the gene on 2DS. Three markers were polymerphic and linked tothe gene. The closest marker Xgwma210 mapped 10.7 cM from Lr39. The location of Lr39 near the telomere of 2DS distinguishes it from the Lr2 and Lr22 loci, which are located on 2DS proximal to Xgwm210.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 20/09/20 alle ore 07:43:39