Chromosomal location of Pm35, a novel Aegilops tauschii derived powdery mildew resistance gene introgressed into common wheat (Triticum aestivum L.)

Miranda, Lilian; Murphy, J. Paul; Marshall, David; Cowger, Christina; Leath, S.

doi:10.1007/s00122-007-0530-4

Cited by 122 publications

(54 citation statements)

References 21 publications

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“…On chromosome 5D, the QTL detected in this study and at the seedling stage (Muranty et al 2008. ) lies in a similar region as Pm35, a major gene derived from Aegilops tauschii and introgressed in NC96BGTD3 (Miranda et al 2007), and as the major genes described by Sun et al (2006) in Aegilops a The support interval was estimated on the basis of a 1.5 LOD unit fall b Resolving power is an estimate of the length of the 95% confidence interval of a QTL location following a method developed by Darvasi and Soller (1997). It was calculated as 530/(N 9 R 2 ), where the constant 530 is derived from simulations of backcross and F 2 populations (Darvasi and Soller 1997), N is the population size and R 2 the proportion of variance explained by the QTL tauschii, namely PmY201 and PmY212.…”

Section: Marker Order and Map Coveragementioning

confidence: 98%

“…The use of resistant cultivars is the most economical and environmentally safe means of controlling powdery mildew (Bennet 1984). To date, genes for powdery mildew resistance (Pm genes) have been described at 39 officially named and several temporarily designated gene loci in common wheat Lillemo et al 2008;McIntosh et al 2003;Miranda et al 2007Miranda et al , 2006Zhu et al 2005). Usually, these genes are detected by powdery mildew resistance tests on seedlings or on detached leaves of seedlings (Hsam and Zeller 2002) but are thought to confer resistance which is expressed throughout the life cycle of the host.…”

Section: Introductionmentioning

confidence: 99%

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Estimation of genetic parameters and prediction of breeding values for apple fruit-quality traits using pedigreed plant material in Europe

Kouassi

Durel

Costa

et al. 2009

Tree Genetics & Genomes

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Powdery mildew (Blumeria graminis f. sp. tritici) is one of the major diseases of wheat (Triticum aestivum). Adult plant resistance (APR) to powdery mildew is considered more durable than resistance conferred by major race-specific resistance genes. The objective of the present study was a better understanding of the genetic basis of APR in RE714 by means of QTL analysis of several resistance scores along the growing season. A population of 160 recombinant inbred lines obtained from the cross between RE714 and Hardi (susceptible) was assessed for APR under natural infection conditions during 3 years and a genetic map with whole genome coverage was developed with microsatellite and AFLP markers in this population. Two major QTL on chromosomes 5D and 6A were detected each year, and 6 minor QTL were detected only in 1 or 2 years. The QTL on chromosome 5D was detected during all the growing season each year and its R 2 value varied between 8.5 and 56.3%, whereas the QTL on chromosome 6A was detected at 1-4 scoring dates in the 3 years, and its R 2 value varied between 6.1 and 20.5%. The two QTL explained between 24.4 and 52.1% of the phenotypic variance for AUDPC, depending on the year. The models including QTL and cofactors in the composite interval mapping explained between 29 and 72% of the variance. The molecular markers linked to the two major QTL could be used in marker-assisted selection for adult plant resistance to powdery mildew.

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Section: Marker Order and Map Coveragementioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Estimation of genetic parameters and prediction of breeding values for apple fruit-quality traits using pedigreed plant material in Europe

Kouassi

Durel

Costa

et al. 2009

Tree Genetics & Genomes

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“…Molecular markers are known to be useful in the process of detection of the disease resistance genes, especially in genotypes where the genetic back ground has not been clarified as is the case for most commercial cultivars. The genes Pm24, Pm35, and Pm37 were approved to be effective genes against the disease in the regions with similar ecological condition as Egypt in the world (Huang et al, 2000;Langridge et al, 2001;Miranda et al, 2007;Perugini et al, 2008). Therefore, this study was conducted to identify those powdery mildew resistance genes i.e.…”

Section: Introductionmentioning

confidence: 99%

Identification of Pm24, Pm35 and Pm37 in thirteen Egyptian bread wheat cultivars using SSR markers

Emara

Omar

El-Shamy³

et al. 2016

Ciênc. agrotec.

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Powdery mildew of wheat (Triticum spp.) caused by Blumeria graminis f.sp. tritici (DC) E.O. Speer Em. Marchal is one of the most important bread wheat diseases in Egypt. All the Egyptian common bread wheat cultivars are susceptible to that disease at seedling and adult stages. Breeding of resistant cultivars is the most economical and environmentally safe method to eliminate the disease and reduce crop losses. Combinations of two or more effective resistance genes may lead to better, more durable resistance to that disease. Eight Pm genes i.e. Pm2, Pm6, Pm12, Pm16, Pm24, Pm35, Pm36 and Pm37 out of 21 powdery mildew monogenic wheat lines (Pm) were resistant to 42 individual isolates of powdery mildew collected from different governorates in the Nile Delta area, Egypt, at seedling and adult stages. Only four DNA specific SSR markers (Xgwm337, Xcfd7 linked to Pm24, Pm35 and Xgwm332, Xwmc790) linked to Pm37 resistance genes were selected to detect these genes in 13 Egyptian common bread wheat cultivars. This study reveals the absence of Pm24, Pm35 and Pm37 in all the 13 Egyptian bread wheat cultivars. These results gave evidence that the Egyptian cultivars are not having resistance genes and need to further incorporate one, two or more resistant genes in a single genotype as all commercial cultivars defeated by the pathogen.

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“…In order to improve resistance, wheat (Triticum aestivum L.) had been crossed with its related genera (Jiang et al 1993), such as Aegilops, Elytrigia, Secale, Haynaldia, and related species of Triticum, for instance, T. boeoticum, T. dicoccoides, T. carthlicum and T. timopheevii, which represent a reservoir of genes for resistance to multiple diseases. Intergeneric and interspecific crosses have resulted in the transfer of desirable fungal resistance into wheat; for example, powdery mildew resistance genes, Pm7, Pm8, Pm17, and Pm20 originated from Secale (McIntosh et al 2011); Pm12, Pm13, Pm19, Pm29, Pm32, Pm34, and Pm35 originated from Aegilops (Miranda et al 2007); Pm21 originated from Haynaldia (Cao et al 2011); Pm40 and Pm43 originated from Elytrigia (He et al 2009); Pm4b and Pm33 originated from T. carthlicum (Zhu et al 2005); Pm25 originated from T. boeoticum (Shi et al 1998); and Pm6, Pm27, and Pm37 originated from T. timopheevii (Perugini et al 2008). All provide race-specific resistance to powdery mildew.…”

Section: Introductionmentioning

confidence: 99%

High-density mapping and marker development for the powdery mildew resistance gene PmAS846 derived from wild emmer wheat (Triticum turgidum var. dicoccoides)

Xue

Wang

et al. 2012

Theor Appl Genet

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Powdery mildew, caused by Blumeria graminis f. sp. tritici, is an important foliar disease of wheat worldwide. The dominant powdery mildew resistance gene PmAS846 was transferred to the hexaploid wheat lines N9134 and N9738 from wild emmer wheat (Triticum dicoccoides) in 1995, and it is still one of the most effective resistance genes in China. A high resolution genetic map for PmAS846 locus was constructed using two F(2) populations and corresponding F(2:3) families developed from the crosses of N9134/Shaanyou 225 and N9738/Huixianhong. Synteny between wheat and Brachypodium distachyon and rice was used to develop closely linked molecular markers to reduce the genetic interval around PmAS846. Twenty-six expressed sequence tag-derived markers were mapped to the PmAS846 locus. Five markers co-segregated with PmAS846 in the F(2) population of N9134/Shaanyou 225. PmAS846 was physically located to wheat chromosome 5BL bin 0.75-0.76 within a gene-rich region. The markers order is conserved between wheat and Brachypodium distachyon, but rearrangements are present in rice. Two markers, BJ261635 and CJ840011 flanked PmAS846 and narrowed PmAS846 to a region that is collinear with 197 and 112 kb genomic regions on Brachypodium chromosome 4 and rice chromosome 9, respectively. The genes located on the corresponding homologous regions in Brachypodium, rice and barley could be considered for further marker saturation and identification of potential candidate genes for PmAS846. The markers co-segregating with PmAS846 provide a potential target site for positional cloning of PmAS846, and can be used for marker-assisted selection of this gene.

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Chromosomal location of Pm35, a novel Aegilops tauschii derived powdery mildew resistance gene introgressed into common wheat (Triticum aestivum L.)

Cited by 122 publications

References 21 publications

Estimation of genetic parameters and prediction of breeding values for apple fruit-quality traits using pedigreed plant material in Europe

Estimation of genetic parameters and prediction of breeding values for apple fruit-quality traits using pedigreed plant material in Europe

Identification of Pm24, Pm35 and Pm37 in thirteen Egyptian bread wheat cultivars using SSR markers

High-density mapping and marker development for the powdery mildew resistance gene PmAS846 derived from wild emmer wheat (Triticum turgidum var. dicoccoides)

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