Leaf tip necrosis, molecular markers and β1-proteasome subunits associated with the slow rusting resistance genes Lr46/Yr29

Rosewarne, Garry M.; Singh, R. P.; Espino, Julio Huerta; William, H M; Bouchet, Sophie; Cloutier, Sylvie; McFadden, Helen G.; Lagudah, Evans

doi:10.1007/s00122-005-0153-6

Cited by 149 publications

(73 citation statements)

References 26 publications

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“…Obert et al (2005) tagged new slow-rusting resistance genes to leaf rust from Afghanistan landraces of wheat using AFLP, and mapped this new gene on chromosome 5BS with SSRs. Rosewarne et al (2006) identified and mapped new AFLP markers associated with the Lr46/Yr29 complex, an important gene to APR in wheat. In oat, which has the largest cereal genome, Barbosa et al (2006) tagged partial resistance to oat crown rust by using the AFLP technique.…”

Section: Discussionmentioning

confidence: 99%

Monosomic and molecular mapping of adult plant leaf rust resistance genes in the Brazilian wheat cultivar Toropi

Silva¹,

Brammer²,

Guerra³

et al. 2012

Genet. Mol. Res.

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ABSTRACT. Leaf rust is one of the most destructive diseases affecting wheat worldwide. The most effective way to control it is to use resistant cultivars. Resistance based on slow-rusting adult plant resistance (APR) genes has proven to be the best method for developing cultivars with durable resistance. A source of slow-rusting APR for leaf rust is the Brazilian wheat cultivar Toropi. The Toropi/IAC 13 F 2 and F 7 recombinant inbred lines (RILs) were developed in previous studies. Phenotypic analysis of the F 2 and F 7 RILs showed that 2 recessive genes that were temporarily named trp-1 and trp-2 conferred APR in Toropi. In the present study, we used monosomic families and amplified fragment length polymorphism (AFLP), sequence-tagged site, and simple sequence repeat (SSR) markers to map trp-1 and trp-2 on wheat chromosomes. Analysis of the F 2 monosomic RIL showed that trp-1 and trp-2 were located on chromosomes 1A and 4D, respectively. AFLP analysis of the F 7 RIL identified 2 independent AFLP markers, XPacgMcac3 and XPacgMcac6, which were associated with Toropi APR. These markers explained 71.5% of the variation in the phenotypic data in a multiple linear regression model. The AFLP markers XPacg/ Mcac3 and XPacg/Mcac6 were anchored by SSR markers previously mapped on the short arms of chromosomes 1A (1AS) and 4D (4DS), respectively. The trp-2 gene is the first leaf rust resistance gene mapped on wheat chromosome 4DS. The mapping of trp-1 and trp-2 provides novel and valuable information that could be used in future studies involving the fine mapping of these genes, as well as in the identification of molecular markers that are closely related to these genes for markerassisted selection of this important trait in wheat.

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Section: Discussionmentioning

confidence: 99%

Monosomic and molecular mapping of adult plant leaf rust resistance genes in the Brazilian wheat cultivar Toropi

Silva¹,

Brammer²,

Guerra³

et al. 2012

Genet. Mol. Res.

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“…The Ltn associated with Lr34/Yr18 is quantitatively expressed and it shows a variable expression in different genetic backgrounds when tested under different environmental conditions (Messmer et al 2000;Rosewarne et al 2006). Owing to the absence of Ltn in cultivar PBW65 it can be suggested that the cultivar PBW65 does not carry the gene Lr34.…”

Section: Discussionmentioning

confidence: 99%

“…The genes conditioning race non-specific resistance are characterized by their inability to evoke a hypersensitive response, slowing of the pathogen growth, partial resistance phenotype, additive nature , optimal expression at the adult plant stage and long-term effectiveness (durability) (McIntosh et al 1995;Messmer et al 2000;Suenaga et al 2001Suenaga et al , 2003Singh et al 2004;Navabi et al 2005;Spielmeyer et al 2005;Bossolini et al 2006). Durability of resistance to leaf rust due to the gene Lr34 (Dyck 1987;McIntosh 1992;Singh 1992a, b;Singh & Rajaram 1992;Suenaga et al 2003) and Lr46 (Singh et al 1998;Martinez et al 2001;William et al 2003;Rosewarne et al 2006) has so far been reported to be associated with non-hypersensitive adult plant resistance (APR). Both these genes are also linked to stripe rust resistance (Singh 1992a, b;Singh & Rajaram 1992;Singh et al 1998;Martinez et al 2001;William et al 2003;Suenaga et al 2003;Rosewarne et al 2006).…”

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confidence: 99%

“…Durability of resistance to leaf rust due to the gene Lr34 (Dyck 1987;McIntosh 1992;Singh 1992a, b;Singh & Rajaram 1992;Suenaga et al 2003) and Lr46 (Singh et al 1998;Martinez et al 2001;William et al 2003;Rosewarne et al 2006) has so far been reported to be associated with non-hypersensitive adult plant resistance (APR). Both these genes are also linked to stripe rust resistance (Singh 1992a, b;Singh & Rajaram 1992;Singh et al 1998;Martinez et al 2001;William et al 2003;Suenaga et al 2003;Rosewarne et al 2006). Of these only the Lr34-Yr18 gene pair is effective in India.…”

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Non-hypersensitive leaf rust resistance of bread wheat cultivar PBW65 conditioned by genes different fromLr34

Khan¹,

Saini²

2009

CZECH J GENET PLANT

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Abstract:The bread wheat (Triticum aestivum L.) cultivar PBW65 has shown hight levels of resistance to the most frequent and highly virulent Indian race 77-5 of leaf rust (Puccinia triticina). The infection type and disease severity indicated a non-hypersensitive type of resistance against the race 77-5 in PBW65. The cultivar PBW65 was crossed with the leaf rust susceptible cultivar WL711 to determine the mode of inheritance of the resistance. The segregation for resistant and susceptible plants in the F 2 and F 3 generations revealed, that two genes, each showing additive effects, were likely to confer resistance to leaf rust in PBW65. Intercrossing of PBW65 with Cook (Lr34), RL6058 (Lr34) and HD2009, possessing a similar resistance level like PBW65, revealed that the genes for leaf rust resistance in PBW65 were non-allelic to Cook (Lr34), RL6058 (Lr34) as well as to the gene(s) in HD2009. It is concluded that the cultivar PBW65 is a novel source of non-hypersensitive leaf rust resistance.

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“…Отдельный интерес представляют гены, формирующие неспецифическую устойчивость, поскольку она обеспечивает длительный период эффективности сразу к нескольким патогенам, что делает ее предпочтительной для селекционеров и исследователей. У пшеницы подробно охарактеризованы всего четыре гена Lr34, Lr46, Lr67 и Lr27, определяющих замедленное развитие сразу нескольких заболеваний, два из которых, Lr34 и Lr67, были секвенированы (Rosewarne et al, 2006;Mago et al, 2011;Spielmeyer et al, 2013).…”

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A database on genes increasing resistance of wheat and relative species against pathogenic fungi

Smirnova¹,

Кочетов²

2016

Vestn. VOGiS

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Fungi belong to the major plant pathogens and in ves tigation of plant resistance genes is a quite important task. During the last years many wheat resistance genes were identified. However, the sequencing of the Triticum aestivum L. genome is still going on and the nucleotide sequences of most resistance genes are not yet known. In addition, the study of allelic variants of resistance genes is important for better understanding of the molecular mechanisms of their action. In this paper we present an information resource for accumulation of data on sequenced genes of wheat and its relatives providing resistance against diseases caused by fungal pathogens. The database (PathogenesisRelated Genes, PRG) contains information on gene chromosomal localizations and functional activities, nucleotide sequences and single nucleotide polymorphisms associated with their effects. PRG provides data on the proteins encoded, pathogens and diseases, as well as on the resistance gene expression patterns in response to pathogen inoculations, exposure to hormones and various external stimuli. It also has crossreferences with relat ed entries from the databases on nucleotide se quenc es (GenBank) and proteins (UniProt). Informa tion entered into the database is a result of the annotation of scientific publications and manual curation. Cur rent ly PRG compiles data on 75 allelic variants of 66 resistance genes. The PRG database was developed on the basis of the SRS (Sequence Retrieval System) platform. This system allows the use of complex queries and visualization tools and automatically gene rates wwwinterface with the information in table or text formats. PRG may be useful for research ers studying plant biology or breeding new plant cultivars resistant to fungal diseases. It is available at the address: http://srs6.bionet.nsc.ru/srs6bin/cgibin/ wgetz?page+top+newId.

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Leaf tip necrosis, molecular markers and β1-proteasome subunits associated with the slow rusting resistance genes Lr46/Yr29

Cited by 149 publications

References 26 publications

Monosomic and molecular mapping of adult plant leaf rust resistance genes in the Brazilian wheat cultivar Toropi

Monosomic and molecular mapping of adult plant leaf rust resistance genes in the Brazilian wheat cultivar Toropi

Non-hypersensitive leaf rust resistance of bread wheat cultivar PBW65 conditioned by genes different fromLr34

A database on genes increasing resistance of wheat and relative species against pathogenic fungi

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