Genetic Diversity of Barley Foliar Fungal Pathogens

Oğuz, Arzu Çelik; Karakaya, Aziz

doi:10.3390/agronomy11030434

Cited by 19 publications

(10 citation statements)

References 222 publications

(278 reference statements)

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“…Barley ( Hordeum vulgare L.) is the fourth largest cereal crop in the world [ 1 , 2 ]. In China, the area for barley cultivation averaged 8 Mha during 1914 to 1918, dropped to 0.85 Mha in 2004, and further declined to 0.50 Mha in 2007 [ 3 ].…”

Section: Introductionmentioning

confidence: 99%

Virulence and Genetic Types of Blumeria graminis f. sp. hordei in Tibet and Surrounding Areas

Wang

Qucuo

et al. 2023

JoF

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Barley (Hordeum vulgare L.) is the most important cereal crop in the Qinghai-Tibet Plateau, and the yield has been seriously threatened by Blumeria graminis f. sp. hordei (Bgh) in recent years. To understand the virulence and genetic traits of different Bgh populations, 229 isolates of Bgh were collected from Tibet, Sichuan, Gansu and Yunnan provinces of China during 2020 and 2021, and their pathogenicity to 21 barley lines of different genotypes was assessed. A total of 132 virulent types were identified. The Bgh isolates from Yunnan showed the highest diversity in terms of virulence complexity (Rci) and genetic diversity (KWm), followed by those from Sichuan, Gansu, and Tibet, in that order. Single nucleotide polymorphism (SNP) in genes coding for alternative oxidase (AOX), protein kinase A (PKA), and protein phosphatase type 2A (PPA) were detected at seven polymorphic sites. Nine haplotypes (H1–H9) with an average haplotype diversity (Hd) and nucleotide diversity π of 0.564 and 0.00034, respectively, were observed. Of these, haplotypes H1 and H4 accounted for 88.8% of the isolates, and H4 was predominant in Tibet. Genetic diversity analysis using the STRUCTURE (K = 2) and AMOVE indicated that the inter-group variation accounted for 54.68%, and inter- and intra-population genotypic heterogeneity accounted for 23.90% and 21.42%, respectively. The results revealed the recent expansion of the Bgh population in Tibet, accompanied by an increase in virulence and a loss of genetic diversity.

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Section: Introductionmentioning

confidence: 99%

Virulence and Genetic Types of Blumeria graminis f. sp. hordei in Tibet and Surrounding Areas

Wang

Qucuo

et al. 2023

JoF

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“…Yield losses due to barley leaf rust may be up to 60% in susceptible varieties [6]. However, the mean yield losses of barley caused by barley leaf or stem rust often reach 10-25% [7]. Due to the great problems that result from the use of fungicides and their negative effects on the environment and health, the use of resistance cultivars is considered an environmentally benign and effective way to control these diseases [8].…”

Section: Introductionmentioning

confidence: 99%

Estimation of Inheritance Leaf Rust, Powdery Mildew, Yield and Yield Components in Barley through Generation Means Analysis

Mansour

El-Shawy

Abdel-Azim

et al. 2023

AJRCS

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The success of breeding program for improvement any crop depends mainly on the available background of the inheritance of the studied traits to be selected. This study was carried out during 2018/2019, 2019/2020 and 2020/2021 grown seasons at the experimental farm of Sakha Agricultural Research Station, Agricultural Research Center, Egypt to estimate the effect of genetic parameters controlling yield and yield component traits in addition severity of leaf rust and powdery mildew disease infection. Six generations (P1, P2, F1, F2, BC1 and BC2) model was used. Results indicated that, mean effect (m) was highly significant in all evaluated crosses for all studied traits. The relative importance of additive and dominance effects differed from trait to another in each cross. For epistatic components, dominance × dominance interaction effects were more effective than other components in most studied traits. Significant or/and highly significant values in desirable direction of heterosis compared to mid and better parent were obtained from most studied crosses in yield and its attribute traits, but it found over mid parents only for cross no.1 in leaf rust and crosses no. 1 and 2 in powdery mildew infection. The estimation of broad-sense heritability showed high values for studied traits and crosses, while narrow-sense heritability and genetic advance from selection ranged from low to medium in most crosses for the agronomic traits, while it ranged from low to high for leaf rust and powdery mildew infection. Finally, the results of this study recommended the barley crosses no. 4 for improve yield potential and resistant to leaf rust and cross no. 5 to improve resistance to powdery mildew, where it had high genetic advance associated with high heritability.

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“…Genetic diversity of plant pathogen populations is affected by several factors, such as reproduction 1 , geographic distance 2 , host genotype 3 and seasonality 4 . Co-infection, that is, infection of a host by different pathogens 5 or by different genotypes of the same pathogenic species 6 , 7 can also influence pathogen diversity 5 .…”

Section: Introductionmentioning

confidence: 99%

Comprehensive analyses of the occurrence of a fungicide resistance marker and the genetic structure in Erysiphe necator populations

Pintye,

Németh,

Molnár

et al. 2023

Sci Rep

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Genetically distinct groups of Erysiphe necator, the fungus causing grapevine powdery mildew infect grapevine in Europe, yet the processes sustaining stable genetic differences between those groups are less understood. Genotyping of over 2000 field samples from six wine regions in Hungary collected between 2017 and 2019 was conducted to reveal E. necator genotypes and their possible differentiation. The demethylase inhibitor (DMI) fungicide resistance marker A495T was detected in all wine regions, in 16% of the samples. Its occurrence differed significantly among wine regions and grape cultivars, and sampling years, but it did not differ between DMI-treated and untreated fields. Multilocus sequence analyses of field samples and 59 in vitro maintained isolates revealed significant genetic differences among populations from distinct wine regions. We identified 14 E. necator genotypes, of which eight were previously unknown. In contrast to the previous concept of A and B groups, European E. necator populations should be considered genetically more complex. Isolation by geographic distance, growing season, and host variety influence the genetic structuring of E. necator, which should be considered both during diagnoses and when effective treatments are planned.

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Genetic Diversity of Barley Foliar Fungal Pathogens

Cited by 19 publications

References 222 publications

Virulence and Genetic Types of Blumeria graminis f. sp. hordei in Tibet and Surrounding Areas

Virulence and Genetic Types of Blumeria graminis f. sp. hordei in Tibet and Surrounding Areas

Estimation of Inheritance Leaf Rust, Powdery Mildew, Yield and Yield Components in Barley through Generation Means Analysis

Comprehensive analyses of the occurrence of a fungicide resistance marker and the genetic structure in Erysiphe necator populations

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