Chromosome location and microsatellite markers linked to a powdery mildew resistance gene in wheat line ‘Lankao 90(6)’

Niu, Jishan; Wang, B. Q.; Wang, Y. H.; Cao, Aizhong; Qi, Zengjun; Shen, T. M.

doi:10.1111/j.1439-0523.2007.01480.x

Cited by 36 publications

(15 citation statements)

References 18 publications

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“…PmLK906 is a recessive gene, and SSR markers Xgwm265 and Xgdm93 are tightly linked to it (Niu et al. 2008), but these markers were monomorphic when tested on our Zheng 9754 materials (Fig.…”

Section: Discussionmentioning

confidence: 98%

Identification and molecular mapping of PmHNK54: a novel powdery mildew resistance gene in common wheat

et al. 2011

Plant Breeding

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Powdery mildew of wheat is caused by Blumeria graminis (DC.) Speer f. sp. tritici (Bgt). Wheat line Zheng 9754 is resistant in Henan Province. In seedling tests with seven Bgt isolates, Zheng 9754 had a different reaction pattern from those of lines Khapli with Pm4a, Armada with Pm4b, 81-7241 with Pm4c and Lankao 906 with PmLK906. F 1 hybrids, 516 F 2 plants and 327 F 2:3 lines derived from Zheng 9754/Chinese Spring (CS) were used for resistance gene tagging and linkage analysis. Simple sequence repeat (SSR) markers were used to test the two parents and resistant and susceptible bulks. Subsequently, three polymorphic markers were used for genotyping the F 2 and F 2:3 populations. Powdery mildew resistance in Zheng 9754 was conferred by a single dominant gene, tentatively designated PmHNK54, flanked by SSR markers Xgwm312, Xgwm372 and Xbarc5 on chromosome 2AL. The resistance gene was closely linked to Xbarc5 and Xgwm312, with genetic distances of 5.0 and 6.0 cM, respectively, and located on the chromosome bin 2AL-1-0.85 in the test with a set of deletion lines. The results suggested that PmHNK54 in Zheng 9754 is a new powdery mildew resistance gene in common wheat.

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Section: Discussionmentioning

confidence: 98%

Identification and molecular mapping of PmHNK54: a novel powdery mildew resistance gene in common wheat

et al. 2011

Plant Breeding

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Section: Discussionmentioning

confidence: 99%

“…At that time, breeding schemes selected plants on the basis of phenotype (green leaves = major genes), rather than genetic background for quantitative resistance, which was randomly lost. Whilst many Pm genes are regularly described in wheat and wild grasses (Tyrka & Chelkowski, 2004;Niu et al, 2008;He et al, 2009;Li et al, 2009;Ren et al, 2009), this research is not as advanced in triticale breeding, probably because resistance to powdery mildew was until recently a much less important selection criterion than productivity, resistance to lodging and preharvest sprouting, grain quality (kernel weight, protein content, etc.) or resistance to other diseases, such as rusts.…”

Section: Discussionmentioning

confidence: 99%

Evidence of host‐range expansion from new powdery mildew (Blumeria graminis) infections of triticale (×Triticosecale) in France

et al. 2010

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This study aimed to determine whether powdery mildew caused by Blumeria graminis is an endemic pathogen of triticale (·Triticosecale: Triticum · Secale), emerging as a result of recent changes in its pathogenicity, or whether it is a new pathogen, possibly resulting from hybridization between ff. spp. tritici and secalis. A secondary aim was to consider breeding practices that may have favoured this emergence. Phylogenetic analyses based upon six genes revealed the close relatedness of the novel entity and the ff. spp. tritici and secalis, but the IGS marker finally grouped together the isolates collected on triticale and on wheat, supporting the scenario of a recent host-range expansion from wheat to triticale. Pathotype analyses concluded that virulence spectra of B. graminis infecting triticale were new in comparison to those observed for other reference formae speciales, and lack of fungicide resistance in triticale isolates strengthens the hypothesis of no or little genetic exchange between wheat and triticale populations of powdery mildew. This adaptation may follow the breakdown of plant resistance genes, which are probably not very diverse in current triticale cultivars since this criterion was not considered as a major one until recent years. Moreover, the complex selection and genetics of this hybrid cereal makes it difficult to predict the transmission of powdery mildew resistance genes.

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“…A microsatellite map of wheat containing 279 loci amplified by 239 primer sets (Röder et al 1998) is available as a valuable resource for tagging and mapping genes that control a number of important traits (Schmidt et al 2004;Khlestkina et al 2007;Niu et al 2008). In this study, we used these primer sets to identify markers linked to yellow rust resistance genes in wheat by bulk segregant analysis.…”

Section: Introductionmentioning

confidence: 99%

A microsatellite marker for yellow rust resistance in wheat

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et al. 2010

Cereal Research Communications

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Bulk segregant analysis (BSA) was used to identify molecular markers associated with yellow rust disease resistance in wheat (Triticum aestivum L.). DNAs isolated from the selected yellow rust tolerant and susceptible F 2 individuals derived from a cross between yellow rust resistant and susceptible wheat genotypes were used to established a "tolerant" and a "susceptible" DNA pool. The BSA was then performed on these DNA pools using 230 markers that were previously mapped onto the individual wheat chromosomes. One of the SSR markers (Xgwm382) located on chromosome group 2 (A, B, D genomes) was present in the resistant parent and the resistant bulk but not in the susceptible parent and the susceptible bulk, suggesting that this marker is linked to a yellow rust resistance gene. The presence of Xgwm382 was also tested in 108 additional wheat genotypes differing in yellow rust resistance. This analysis showed that 81% of the wheat genotypes known to be yellow rust resistant had the Xgwm382 marker, further suggesting that the presence of this marker correlates with yellow rust resistance in diverse wheat germplasm. Therefore, Xgwm382 could be useful for marker assisted selection of yellow rust resistances genotypes in wheat breeding programs.

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Chromosome location and microsatellite markers linked to a powdery mildew resistance gene in wheat line ‘Lankao 90(6)’

Cited by 36 publications

References 18 publications

Identification and molecular mapping of PmHNK54: a novel powdery mildew resistance gene in common wheat

Identification and molecular mapping of PmHNK54: a novel powdery mildew resistance gene in common wheat

Evidence of host‐range expansion from new powdery mildew (Blumeria graminis) infections of triticale (×Triticosecale) in France

A microsatellite marker for yellow rust resistance in wheat

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