Host status of barley to Puccinia coronata from couch grass and P. striiformis from wheat and brome

Niks, Rients E.; Heyzen, Skye van; Szabo, Les J.; Alemu, Sisay

doi:10.1007/s10658-013-0174-y

Cited by 9 publications

(19 citation statements)

References 18 publications

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“…hordei (Niks et al 2013); one isolate of Puccinia striiformis f.sp. bromi (Psb) collected from California brome grass (Bromus carinatus) in Wageningen; isolate 237E141 of Puccinia striiformis f.sp.…”

Section: Pathogen Materialsmentioning

confidence: 99%

“…None of the accessions had complete resistance, and only approximately 17 % of the accessions showed substantially reduced uredinium development. Among the quantitatively resistant accessions were cvs Vada and Cebada Capa, whereas line SusPtrit was among the most susceptible accessions (Niks et al 2013).…”

Section: Introductionmentioning

confidence: 98%

“…This disease is particularly common and damaging in ryegrass (Lolium) and oats (Avena) but is one of the less frequently reported rust fungal pathogens of cultivated barley (H. vulgare) and wheat (Triticum) (Niks et al 2013). A screen of 108 barley accessions (Niks et al 2013) with a recently collected European isolate of P. coronata on Elymus repens (PcE) confirmed that susceptibility is the rule in barley at the seedling stage (Jin and Steffenson 2002). None of the accessions had complete resistance, and only approximately 17 % of the accessions showed substantially reduced uredinium development.…”

Section: Introductionmentioning

confidence: 99%

“…bromi (Pst), and f.sp. hordei (Psh) (Niks et al 2013). Pst could infect only a small minority (10 %) of the accessions.…”

Section: Introductionmentioning

confidence: 99%

“…Pst could infect only a small minority (10 %) of the accessions. Psb was somewhat more adapted to barley (47 %), and the barley-adapted Psh could infect the vast majority of the barley accessions (90 %) (Niks et al 2013). As we found previously (Atienza et al 2004) for other unadapted rust fungi, cvs Vada and Cebada Capa were also immune to Pst and Psb and contrasted with the highly susceptible SusPtrit.…”

Section: Introductionmentioning

confidence: 99%

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Mapping genes in barley for resistance to Puccinia coronata from couch grass and to P. striiformis from brome, wheat and barley

et al. 2015

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Barley (Hordeum vulgare L.) mapping populations have been developed that are useful to study the inheritance of quantitative resistance to adapted and unadapted rust fungi. In a recent host range study, we found that the parents of those mapping populations also differed in their resistance to the crown rust Puccinia coronata (PcE) of couch grass (Elymus repens), as well as three isolates of P. striiformis, representing formae speciales hordei (Psh), tritici (Pst) and bromi (Psb). Available mapping populations were phenotyped at the seedling stage to map the genes conferring resistance to these rust isolates. Resistances to PcE, Psb and Pst inherit quantitatively. This contrasted with reports that barley nonhost resistance to unadapted formae speciales of P. striiformis is based on major genes. We mapped QTLs effective against PcE using relative latency period and relative infection frequency. Some QTLs for resistance were contributed by 'Vada' and 'Cebada Capa', others by SusPtrit. One PcE-resistance QTL on 3H, contributed by 'Cebada Capa', co-localised with a QTL effective against four unadapted grass rust species, indicating either a single gene with broad-spectrum effectiveness or a cluster of rather specific genes. Chromosome arm 7HL from Vada seems particularly rich in genes for resistance to rust fungi. Resistance to Pst and Psb, measured as the number of uredinia, tended to co-localise with each other and mapped to Electronic supplementary material The online version of this article

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Section: Pathogen Materialsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

“…bromi (Pst), and f.sp. hordei (Psh) (Niks et al 2013). Pst could infect only a small minority (10 %) of the accessions.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Mapping genes in barley for resistance to Puccinia coronata from couch grass and to P. striiformis from brome, wheat and barley

et al. 2015

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Isolation and fine mapping of Rps6: an intermediate host resistance gene in barley to wheat stripe rust

et al. 2016

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Key messageWe uncouple host and nonhost resistance in barley toPuccinia striiformisff. spp.hordeiandtritici. We isolate, fine map, and physically anchorRps6to chromosome 7H in barley.AbstractA plant may be considered a nonhost of a pathogen if all known genotypes of a plant species are resistant to all known isolates of a pathogen species. However, if a small number of genotypes are susceptible to some known isolates of a pathogen species this plant may be considered an intermediate host. Barley (Hordeum vulgare) is an intermediate host for Puccinia striiformis f. sp. tritici (Pst), the causal agent of wheat stripe rust. We wanted to understand the genetic architecture underlying resistance to Pst and to determine whether any overlap exists with resistance to the host pathogen, Puccinia striiformis f. sp. hordei (Psh). We mapped Pst resistance to chromosome 7H and show that host and intermediate host resistance is genetically uncoupled. Therefore, we designate this resistance locus Rps6. We used phenotypic and genotypic selection on F2:3 families to isolate Rps6 and fine mapped the locus to a 0.1 cM region. Anchoring of the Rps6 locus to the barley physical map placed the region on a single fingerprinted contig spanning a physical region of 267 kb. Efforts are now underway to sequence the minimal tiling path and to delimit the physical region harboring Rps6. This will facilitate additional marker development and permit identification of candidate genes in the region.Electronic supplementary materialThe online version of this article (doi:10.1007/s00122-015-2659-x) contains supplementary material, which is available to authorized users.

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The HSP90-RAR1-SGT1 based protein interactome in barley and stripe rust

Pei

Sun

Hao

et al. 2015

Physiological and Molecular Plant Pathology

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Host status of barley to Puccinia coronata from couch grass and P. striiformis from wheat and brome

Cited by 9 publications

References 18 publications

Mapping genes in barley for resistance to Puccinia coronata from couch grass and to P. striiformis from brome, wheat and barley

Mapping genes in barley for resistance to Puccinia coronata from couch grass and to P. striiformis from brome, wheat and barley

Isolation and fine mapping of Rps6: an intermediate host resistance gene in barley to wheat stripe rust

The HSP90-RAR1-SGT1 based protein interactome in barley and stripe rust

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