Mapping of the loci controlling the resistance to Pyrenophora teres f. teres and Cochliobolus sativus in two double haploid barley populations

Afanasenko, Olga; Koziakov, A. V.; Hedlay, P. E.; Lashina, Nina M.; Anisimova, Anna; Manninen, Outi; Jalli, Marja; Potokina, Elena

doi:10.1134/s2079059715030028

Cited by 20 publications

(32 citation statements)

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“…QTLs between 50 and 86 cM on this chromosome. We suggest that seedling resistance to the newly studied isolates P3.4.0 and K5.1 is conferred in Siberian barley germplasm by the previously known locus found on chromosome 1H by Grewal et al (2012) [10] and Afanasenko et al (2014) [2]. In addition, chromosome 1H is known to carry another locus at approximately 40 cM from this one, described by Amezrou et al (2018) [8] and Vatter et al [18] (Table 5).…”

Section: Discussionsupporting

confidence: 49%

“…The net form of net blotch (NFNB) is the dominant form in different regions of Russia; the spot form of net blotch (SFNB) was found only in the southern part of European Russia [1]. NFNB epidemics in Northwest Russia appear with a frequency of 5 times every 10 years [2]. Infection can result in significant yield losses of up to 40% on susceptible cultivars under favourable environmental conditions [3]; also, the disease can cause reductions in the quality of barley [4].…”

Section: Introductionmentioning

confidence: 99%

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SNPs associated with barley resistance to isolates of Pyrenophora teres f. teres

et al. 2019

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Background: Net blotch caused by Pyrenophra teres f. teres is a major foliar disease of barley. Infection can result in significant yield losses of susceptible cultivars of up to 40%. Of the two forms of net blotch (P. teres f. teres and P. teres f. maculata), P. teres f. teres (net form of net blotch) is the dominant one in Russia. The goal of the current study was to identify genomic regions associated with seedling resistance to several pathotypes of the net form of net blotch in Siberian spring barley genotypes. For this, a genome-wide association study of a Siberian barley collection, genotyped with 50 K Illumina SNP-chip, was carried out. Results: Seedling resistance of 94 spring barley cultivars and lines to four Pyrenophora teres f. teres isolates (S10.2, K5.1, P3.4.0, and A2.6.0) was investigated. According to the Tekauz rating scale, 25, 21, 14, and 14% of genotypes were highly resistant, and 19, 8, 9, and 16% of genotypes were moderate-resistant to the isolates S10.

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Section: Discussionsupporting

confidence: 49%

Section: Introductionmentioning

confidence: 99%

SNPs associated with barley resistance to isolates of Pyrenophora teres f. teres

et al. 2019

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“…AL_QRptt3-1, which is at 128.5–129.6 cM on the POPseq map, is in close vicinity of the marker 11_20920 at 123.23 cM, and the marker 11_10845 at 129.44 cM on the POPseq map is within the AL-QRptt5-1 interval of 129.9–130.7 cM [27]. In addition, Afanasenko et al found an association of the marker 11_20531 (POPseq map: 94.9 cM) with resistance to the two Russian net form isolates PP1 and PP6.…”

Section: Discussionmentioning

confidence: 99%

Mapping of quantitative trait loci associated with resistance to net form net blotch (Pyrenophora teres f. teres) in a doubled haploid Norwegian barley population

2017

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Barley net blotch caused by the necrotrophic fungus Pyrenophora teres is a major barley disease in Norway. It can cause grain shriveling and yield losses, and resistance in currently grown cultivars is insufficient. In this study, a set of 589 polymorphic SNP markers was used to map resistance loci in a population of 109 doubled haploid lines from a cross between the closely related Norwegian cultivars Arve (moderately susceptible) and Lavrans (moderately resistant). Resistance to three net form net blotch (P. teres f. teres) single spore isolates was evaluated at the seedling stage in the greenhouse and at the adult plant stage under field conditions during three years. Days to heading and plant height were scored to assess their influence on disease severity. At the seedling stage, three to four quantitative trait loci (QTL) associated with resistance were found per isolate used. A major, putatively novel QTL was identified on chromosome 5H, accounting for 23–48% of the genetic variation. Additional QTL explaining between 12 and 16.5% were found on chromosomes 4H, 5H, 6H and 7H, with the one on 6H being race-specific. The major QTL on 5H was also found in adult plants under field conditions in three years (explaining up to 55%) and the 7H QTL was found in field trials in one year. Additional adult plant resistance QTL on 3H, 6H and 7H were significant in single years. The resistance on chromosomes 3H, 5H, 6H and 7H originates from the more resistant parent Lavrans, while the resistance on 4H is conferred by Arve. The genetic markers associated with the QTL found in this study will benefit marker-assisted selection for resistance against net blotch.

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“…In the case of NFNB, dominant and recessive major genes and quantitative trait loci (QTLs), many of which mapped to chromosome 6H, were shown to be involved in conferring resistance or susceptibility to various Ptt isolates (reviewed in Liu et al, 2011Liu et al, , 2015Konig et al, 2014;Afanasenko et al, 2015). In the case of NFNB, dominant and recessive major genes and quantitative trait loci (QTLs), many of which mapped to chromosome 6H, were shown to be involved in conferring resistance or susceptibility to various Ptt isolates (reviewed in Liu et al, 2011Liu et al, , 2015Konig et al, 2014;Afanasenko et al, 2015).…”

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confidence: 99%

“…Many barley breeding lines and commercial cultivars have been reported as sources of resistance against Ptt and Ptm, and the inheritance mechanisms and chromosomal locations of the related genes have been investigated. In the case of NFNB, dominant and recessive major genes and quantitative trait loci (QTLs), many of which mapped to chromosome 6H, were shown to be involved in conferring resistance or susceptibility to various Ptt isolates (reviewed in Liu et al, 2011Liu et al, , 2015Konig et al, 2014;Afanasenko et al, 2015). For SFNB, one or more seedling and/or adult plant resistance genes were identified on chromosomes 3H, 4H, 5H, 6H, and 7H in different barley lines (Molnar et al, 2000;Friesen et al, 2006;Gupta et al, 2006;Manninen et al, 2006;Grewal et al, 2008aGrewal et al, , 2012.…”

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confidence: 99%

Resistance to Pyrenophora teres f. teres and P. teres f. maculata in Canadian Barley Genotypes

et al. 2017

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The fungi Pyrenophora teres Drechs. f. teres Smedeg. (Ptt) and Pyrenophora teres Drechs. f. maculata Smedeg. (Ptm) cause the net (NFNB) and spot forms (SFNB) of net blotch of barley (Hordeum vulgare L.). The reaction of a collection of barley genotypes previously identified as resistant to NFNB and/or SFNB in western Canada was assessed against seven isolates each of Ptt and Ptm. These included isolates recently collected from western Canada plus reference isolates frequently used in resistance breeding programs. Experiments were conducted under greenhouse conditions, with the second and third leaves of each plant rated on disease reaction scales of 1 to 10 (Ptt) or 1 to 9 (Ptm) 1 wk after inoculation. The NFNB resistance in the cultivars ‘Vivar’ and ‘CDC Helgason’ was overcome by two and four of the Ptt isolates, respectively. ‘AAC Synergy’ was resistant to all Ptt isolates examined, although two caused disease severities of 4.6 and 5.0, suggesting some adaptation to the resistance in this cultivar. The breeding lines TR 253, CI 9819, and TR 236 were the most resistant to Ptt, with average disease severities of almost 3.0. Resistance to SFNB in ‘CDC Meredith’ was overcome by all Ptm isolates tested, while ‘Cerveza’, ‘Major’, and AAC Synergy were resistant to all of the isolates. Among the breeding lines, TR 236 was the most resistant to Ptm, with an average rating score of 3.9. The identification of isolates virulent on cultivars classified as “resistant” highlights the need for integrated disease management approaches to avoid net blotch resistance breakdown in western Canada.

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Mapping of the loci controlling the resistance to Pyrenophora teres f. teres and Cochliobolus sativus in two double haploid barley populations

Cited by 20 publications

References 37 publications

SNPs associated with barley resistance to isolates of Pyrenophora teres f. teres

SNPs associated with barley resistance to isolates of Pyrenophora teres f. teres

Mapping of quantitative trait loci associated with resistance to net form net blotch (Pyrenophora teres f. teres) in a doubled haploid Norwegian barley population

Resistance to Pyrenophora teres f. teres and P. teres f. maculata in Canadian Barley Genotypes

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