Determination of the cluster of wheat rust resistance genes Yr17, Lr37, and Sr38 by a molecular marker

Abstract

AMBROZKOVÁ M., DEDRYVER F., DUMALASOVÁ V., HANZALOVÁ A., BARTOŠ P. (2002): Determination of the cluster of wheat rust resistance genes Yr17, Lr37, and Sr38 by a molecular marker. Plant Protect. Sci., 38: 41-45.

Resistance of the Wheat Cultivar ‘Renan’ to Septoria Leaf Blotch Explained by a Combination of Strain Specific and Strain Non-Specific QTL Mapped on an Ultra-Dense Genetic Map

“…For the three QTL detected in this study, the parent carrying the resistance allele is the cultivar Renan. Renan carries known resistance genes to a number of diseases, including rust resistance genes Yr17 , Lr37 , and Sr38 , all originating from a chromosomal introgression from Aegilops ventricosa on wheat chromosome 2AS [ 88 , 89 , 90 ], eyespot resistance gene Pch1 on chromosome 7D [ 91 , 92 ], and powdery mildew resistance gene Pm4b on chromosome 2AL [ 91 , 93 ]. None of these known resistances to other diseases colocalize with the three QTL detected in this study.…”

Prebreeding research of near-isogenic lines of spring bread wheat with a combination of translocations from Agropyron elongatum (Host.) Р.В. and Aegilops ventricosa Tausch.

“…Тем не менее необходимо уточнить, что ген Lr37 характеризуется в основном как возрастной (устойчивость к патогену экспрессируется со стадии флаг-листа), редко проявляет IT = 1,2 -N в стадии проростков, при этом наблюдается температурочувствительность (большая экспрессия при температуре 17 °С) (Bariana, McIntosh., 1993). По данным ряда авторов, ген Lr37 в стадии проростков устойчив лишь к некоторым редким патотипам P. triticina (Ambrozova et al, 2002). Ген Lr19 -ювенильный, температурочув-ствительность отсутствует (McIntosh et al, 1995).…”

Symbiotic Variations among Wheat Genotypes and Detection of Quantitative Trait Loci for Molecular Interaction with Auxin-Producing Azospirillum PGPR

“…In the case of crops, key events determining the properties of the current varieties include domestication [ 25 , 26 , 27 , 28 ], and in the second half of the last century, the advent of modern breeding, which typically aims at developing high-yield cultivars able to value farming inputs, i.e., under conditions close to the agronomic optimum [ 29 , 30 , 31 ]. Modern cultivars may differ from ancient plant genotypes in terms of their root exudation because of differences in the physiology and metabolic composition of their plant tissues [ 32 , 33 , 34 ], root architecture [ 32 , 35 , 36 ] and disease resistance [ 37 , 38 , 39 ], which might lead to particular rhizobacterial community composition [ 17 , 21 , 40 , 41 , 42 , 43 ]. Indeed, interaction analysis of 192 bread wheat accessions with the 2,4-diacetylphloroglucinol (DAPG)-producing PGPR Pseudomonas ogarae F113 showed that the abilities for PGPR root colonization and expression of the DAPG genes phl on roots were higher overall in ancient wheat genotypes than modern genotypes, even though the capacity for PGPR interaction was maintained in certain modern cultivars [ 44 ].…”