Identification of Barley Landraces and Wild Barley (Hordeum spontaneum) Genotypes Resistant to Rhynchosporium commune

Azamparsa, Mohammad Reza; Karakaya, Aziz; Ergün, Namuk; Sayim, İsmail; Duran, Rukiye Murat; Özbek, Kürşad

doi:10.15832/ankutbd.441916

Cited by 9 publications

(10 citation statements)

References 13 publications

(17 reference statements)

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“…Based on disease scoring, it has been observed that six-row Turkish barley varieties had lower reaction values to R. commune compared to those of two-row varieties. This finding is correlated with the results obtained in various studies [11,18,19,32,33]. In addition, Albustan et al [34] determined that only the variety Erginel 90 was determined resistant to R. commune among the 15 barley varieties tested in reaction studies conducted in both field and greenhouse conditions.…”

Section: Discussionsupporting

confidence: 82%

Evaluating Scald Reactions of Some Turkish Barley (Hordeum vulgare L.) Varieties Using GGE Biplot Analysis

Akan,

Cat,

Hocaoglu

et al. 2023

Agronomy

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Scald caused by the fungal pathogen Rhynchosporium commune is a significant foliar disease affecting barley production on a global scale, and it leads to substantial reductions in both yield and quality of barley. In the current study, the reactions of 40 Turkish barley (Hordeum vulgare L.) varieties to scald were evaluated under natural conditions in Çanakkale and Kırşehir in 2021–2022, and Antalya and Siirt locations in 2022–2023 growing seasons. Field trials were conducted according to randomized block design with three replications in each year; the spore concentration was 1 × 106 spores per mL, and it was applied to the varieties three times at different growth stages. The reactions of barley varieties were assessed using a newly designed two-digit scale ranging from 11 to 99. Based on their scale values, the varieties were categorized as immune (0), resistant (11–35), moderately resistant (36–55), moderately susceptible (56–75), and susceptible (76–99). In addition, genotype plus genotype-by-environment (GGE) interactions of scale values were analyzed through GGE Biplot and explained 97.65% of the total variation. The ranking of genotypes based on scale groups generally showed consistency with GGE Biplot results, but GGE Biplot offered a more detailed classification, especially for moderately susceptible varieties. The relationship between the two methods indicated the relative stability of variety reactions, as GGE Biplot analysis also considered genotype stability. In conclusion, the use of the newly developed scale for evaluating scald reactions in barley gives reliable results. In addition, identified resistant varieties can serve as valuable genetic resources for further breeding studies.

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Section: Discussionsupporting

confidence: 82%

Evaluating Scald Reactions of Some Turkish Barley (Hordeum vulgare L.) Varieties Using GGE Biplot Analysis

Akan,

Cat,

Hocaoglu

et al. 2023

Agronomy

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“…Among the barley differential cultivars, Jet and Abyssinia showed the most resistant reactions to R. commune and these two differential cultivars may be used as genitors in future barley scald resistance breeding programs. Also, wild barley (Hordeum spontaneum) and barley landraces can be used in scald resistance breeding studies (Azamparsa et al 2019). For better management of the disease, information about the pathotype composition of fungus is necessary.…”

Section: Discussionmentioning

confidence: 99%

Determination of the pathotypes of Rhynchosporium commune (Zaffarona, McDonald & Linde) in some regions of Turkey

Azamparsa¹,

Karakaya²

2020

Bitki Koruma Bülteni

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Barley scald, caused by the fungal pathogen Rhynchosporium commune is the most important disease of barley in the world and in Turkey. Surveys were conducted during 2012, 2013, and 2014 in different regions of Turkey. Isolations were accomplished from diseased leaves and from these fifty-two R. commune single spore isolates were selected. A total of 30 scald pathotypes were distinguished based on virulence on 17 barley differential set cultivars. Eighteen, 14, 6, and 1 of these pathotypes were from Central Anatolia, Southeast Anatolia, Aegean, and the Black Sea regions of Turkey, respectively. Twenty, 5, 1, 3, and 1 of these pathotypes were represented by 20, 2, 3, 4, and 7 isolates, respectively. None of the pathotypes was virulent on all 17 barley differential cultivars and two susceptible control cultivars. The most virulent pathotypes (pathotypes 29 and 30) were obtained from Manisa-Kula (13-203) and Gaziantep-Subağı (GPS71U) locations and the least virulent pathotype (pathotype 1) was obtained from Sivas-Gemerek (GPS31) and Sivas-Ulaş (NKT20) locations of Turkey. Among 17 barley differential cultivars, Jet and Abyssinia were susceptible to 1 pathotype, Osiris, Atlas 46, and Forrajera were susceptible to 3 pathotypes, La Mesita and Bey were susceptible to 7 pathotypes, Trebi was susceptible to 9 pathotypes, Pirate was susceptible to 10 pathotypes, Modoc was susceptible to 11 pathotypes, Kitchin and Igri were susceptible to 12 pathotypes, Armelle and Astrix were susceptible to 19 pathotypes, Athene was susceptible to 21 pathotypes, Steudelli was susceptible to 24 pathotypes and Digger was susceptible to 25 pathotypes. Among barley differential cultivars, Jet and Abyssinia cultivars were found as the most resistant, and Digger and Steudelli cultivars were the most susceptible cultivars. Two susceptible control cultivars Bülbül 89 and Efes 3 were found susceptible to 93% of scald pathotypes. It appears that considerable variation exists among the Turkish R. commune isolates obtained from some barley growing areas of Turkey.

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“…Four isolates were the most virulent isolates (GPS71-U, 13GPS203, 13GPS207, and 13GPS109) in the study of Azamparsa and Karakaya (2020). Whereas, one isolate was the most virulent (13GPS149) and another represented the most common pathotype (E4) from Azamparsa et al (2019). Isolates GPS71-U, 13GPS203, 13GPS207, 13GPS109, 13GPS149 and E4 were obtained from the Gaziantep-Subağı, Manisa-Kula, İzmir-Bergama, Ankara-Şere ikoçhisar, Mardin-Midyat and Eskişehir-Tepebaşı regions of Turkey, respectively.…”

Section: Biological Materialsmentioning

confidence: 99%

“…Following inoculation, plants were transferred to a mist chamber with 100% relative humidity at 16-17°C for 48 hours. Two days post inoculation, plants were moved to the greenhouse with a 20-25°C temperature range (Azamparsa et al 2019). The disease assessment was made using a 0-4 scale developed by El-Ahmed (1981) 18 days post inoculation and used in subsequent association mapping.…”

Section: Phenotypic Assaymentioning

confidence: 99%

“…Wild and landrace barley lines are excellent sources of novel disease resistance genes due to their diversity (Russell et al 2016;Çelik Oğuz et al 2017Çelik Oğuz et al , 2019Azamparsa et al 2019). A recent study used nested association mapping in the HEB-25 wild barley population crossed to the German line 'Barke' identifying eight loci (Büttner et al 2020).…”

Section: Introductionmentioning

confidence: 99%

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Wild barley (Hordeum spontaneum) and landraces (Hordeum vulgare) from Turkey contain an abundance of novel Rhynchosporium commune resistance loci

et al. 2023

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Rhynchosporium commune, the causal agent of the disease scald or leaf blotch of barley is a hemibiotrophic fungal pathogen of global importance, responsible for yield losses ranging from 30-40% on susceptible varieties. To date, over 150 resistance loci have been characterized in barley. However, due to the suspected location of the R. commune host jump in Europe, European germplasm has been the primary source used to screen for R. commune resistance leaving wild (Hordeum spontaneum) and landrace (H. vulgare) barley populations from the center of origin largely underutilized. A diverse population consisting of 94 wild and 188 barley landraces from Turkey were genotyped using PCR-GBS amplicon sequencing and screened with six Turkish R. commune isolates. The isolates were collected from distinct geographic regions of Turkey with two from the Aegean region, two from central Turkey and two from the Fertile Crescent region. The data was utilized for association mapping analysis with a total of 21 loci identi ed, of which 13 were novel, indicating that these diverse primary barley gene pools contain an abundance of novel R. commune resistances that could be utilized for resistance breeding. Key MessageRhychosporium commune is a globally devastating pathogen of barley. Wild and landrace barley are underutilized; however, contain an abundance of loci that can be used as potential sources of resistance.

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Identification of Barley Landraces and Wild Barley (Hordeum spontaneum) Genotypes Resistant to Rhynchosporium commune

Cited by 9 publications

References 13 publications

Evaluating Scald Reactions of Some Turkish Barley (Hordeum vulgare L.) Varieties Using GGE Biplot Analysis

Evaluating Scald Reactions of Some Turkish Barley (Hordeum vulgare L.) Varieties Using GGE Biplot Analysis

Determination of the pathotypes of Rhynchosporium commune (Zaffarona, McDonald & Linde) in some regions of Turkey

Wild barley (Hordeum spontaneum) and landraces (Hordeum vulgare) from Turkey contain an abundance of novel Rhynchosporium commune resistance loci

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