Virulence of wheat leaf rust (<i>Puccinia triticina</i> Eriks.) in the years 2013–2015 and resistance of wheat cultivars in Slovakia

Hanzalová, A.; Bartoš, Pavel; Sumíková, T.

doi:10.1556/0806.44.2016.030

Cited by 8 publications

(4 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Climate changes are usually of a global nature, so that neighbouring regions are exposed to them more or less simultaneously. Interestingly, in parallel with the considerable modification of P. triticina in Israel in 2012, significant shifts in the pathogen were registered in Dagestan around the same year (figure in Gultyaeva et al , ) and other wheat‐growing regions of Russia (E. I. Gultyaeva, All‐Russian Research Plant Protection Institute, St Petersburg, Russia, personal communication), in Slovakia [compare virulence frequencies on Lr1 , Lr2b , Lr2c and Lr23 genes in table (Hanzalova et al , ) and table (Hanzalova et al , )], and perhaps in Egypt and Ethiopia (based on a limited amount of data). A more accurate and comprehensive study of how climate changes may modify structure and diversity of a pathogen population can be performed with recently developed methods based on original infection type data rather than on the corresponding avirulence/virulence data derived by the binary transformation of the former ones (Kosman et al , ).…”

Section: Discussionmentioning

confidence: 99%

Diversity of virulence phenotypes among annual populations of Puccinia triticina originating from common wheat in Israel during the period 2000–15

et al. 2019

View full text Add to dashboard Cite

Leaf rust, caused by the fungus Puccinia triticina, is the most common rust disease of wheat in wheat‐producing areas worldwide. The Israeli population of P. triticina has been consistently monitored since 1993. A total of 784 single urediniospore isolates from Triticum aestivum were analysed during 2000–15. The structure of the pathogen population has changed to a large extent since 2000. The annual populations of P. triticina were separated into two distinct groups, 2000–11 and 2012–15, while populations of 2000–5 and 2006–12 were differentiated to a lesser extent. The change in the population originating from T. aestivum during the period 2000–15 is less significant compared to changes in the 1990s described previously. Diversity within the annual populations of P. triticina was rather stable during the period studied. Three new pathotypes, characterized by virulences on Lr3ka and Lr30 genes, became dominant between 2012 and 2015, while all but one prevailing pathotypes in 2000–11 were avirulent on these two genes. Significant changes in virulence frequencies on a number of Lr genes (Lr2c, Lr3ka, Lr15, Lr21, Lr23, Lr26, Lr30) and pairwise associations of virulences (mainly with Lr2c and Lr26) were registered in 2012–15 or earlier. It is postulated that the composition and pathotype structure of the P. triticina population in Israel is determined by wind‐disseminated urediniospores from neighbouring regions, where the migration of P. triticina from the eastern part of the Mediterranean Sea and from the Horn of Africa seem to have the greatest influence.

show abstract

Section: Discussionmentioning

confidence: 99%

Diversity of virulence phenotypes among annual populations of Puccinia triticina originating from common wheat in Israel during the period 2000–15

et al. 2019

View full text Add to dashboard Cite

show abstract

“…Importantly, remarkable shifts in populations of P . triticina around 2010–2011 were reported in Israel (Kosman et al , 2019) as well as in Slovakia (Hanzalová et al , 2012, 2016). This could be indirect evidence that global climate changes served as an additional trigger to the modifications of P .…”

Section: Discussionmentioning

confidence: 99%

Regional and temporal differentiation of virulence phenotypes of Puccinia triticina from common wheat in Russia during the period 2001–2018

2020

View full text Add to dashboard Cite

| INTRODUC TI ONLeaf rust, caused by the fungus Puccinia triticina, is the most common rust disease on wheat in Russia and its destructiveness has varied over time and between regions (Sanin, 2012). The use of resistant varieties is the most effective and environmentally friendly method of protection of wheat against leaf rust.Analysis of the population structure of P. triticina and its variability allows for the development of specific wheat varieties resistant to leaf rust and adjustment of their deployment in each separate region.P. triticina has a long history of population studies since physiologic specialization of wheat leaf rust was first described (Mains and Jackson, 1926). The first set of differentials, consisting of eight wheat varieties with different resistance genes (Malakoff [Lr1 gene], Carina [Lr2b = Lr2 2 ], Brevit [Lr2c = Lr2 3 ], Webster [Lr2a], Loros [Lr2 4 ], Mediterranean [Lr3a], Hussar [Lr11], and Democrat [Lr3a]), was suggested by Mains and Jackson (1926) and widely used for analysingAbstract Leaf rust, caused by the fungus Puccinia triticina, is one of the most damaging rust diseases of wheat in Russia. Populations of P. triticina were monitored in seven regions of Russia from 2001 to 2018, with a total of 5,191 single urediniospore isolates from bread wheat (Triticum aestivum) being analysed. Populations have changed significantly in all regions since 2012, after 2 years of drought (2010-2011). Regional collections of P. triticina were also significantly different between the two periods 2001-2009 and 2012-2018, with changes along two geographic gradients from West Siberia to the north-west and south-west (North Caucasia) of the European part of Russia. All tested isolates were avirulent to resistance gene Lr9 in 2001-2009 but, since 2010, virulence to Lr9 has occurred and annually increased in the Asian part of Russia (Ural and West Siberia) due to deployment of cultivars with the Lr9 gene. Virulence to Lr2a and Lr15 was considerably lower in Dagestan (6%-33%) andall European regions (35%-67%) than in Asian regions (84%-96%). During 2001-2009, virulence on Lr1 was also lower in Dagestan (33%) and the European regions (50%-77%) than in Asia (91%-96%); however, by 2012-2018, nearly all isolates were virulent on Lr1. Remarkable changes were observed in frequencies of P. triticina races defined by their virulence/avirulence to Lr1 and Lr2a genes. We postulate the P. triticina population in Dagestan is specific to that area and pathogen populations in European and Asian parts of Russia are distinct. K E Y W O R D SKosman distance, leaf rust, Lr resistance genes, population structure, Triticum aestivum | 861 GULTYAEVA ET AL.

show abstract

“…Only a small portion of them are APR genes [20], including Lr12, Lr13, Lr22a, Lr22b, Lr34, Lr35, Lr37, Lr46, Lr48, Lr49, Lr67, and Lr68, and few of these demonstrate slow rusting resistance. The Lr genes, such as Lr1, Lr3, Lr10, Lr13, Lr14a, Lr24, Lr26, and Lr37, are the most common genes effective against LR [20,21].…”

Section: Introductionmentioning

confidence: 99%

Phenotyping and Exploitation of Kompetitive Allele-Specific PCR Assays for Genes Underpinning Leaf Rust Resistance in New Spring Wheat Mutant Lines

Kenzhebayeva,

Mazkirat,

Shoinbekova

et al. 2024

CIMB

View full text Add to dashboard Cite

Leaf rust (Puccinia triticina Eriks) is a wheat disease causing substantial yield losses in wheat production globally. The identification of genetic resources with permanently effective resistance genes and the generation of mutant lines showing increased levels of resistance allow the efficient incorporation of these target genes into germplasm pools by marker-assisted breeding. In this study, new mutant (M3 generation) lines generated from the rust-resistant variety Kazakhstanskaya-19 were developed using gamma-induced mutagenesis through 300-, 350-, and 400-Gy doses. In field trials after leaf rust inoculation, 75 mutant lines showed adult plant resistance. These lines were evaluated for resistance at the seedling stage via microscopy in greenhouse experiments. Most of these lines (89.33%) were characterized as resistant at both developmental stages. Hyperspectral imaging analysis indicated that infected leaves of wheat genotypes showed increased relative reflectance in visible and near-infrared light compared to the non-infected genotypes, with peak means at 462 and 644 nm, and 1936 and 2392 nm, respectively. Five spectral indexes, including red edge normalized difference vegetation index (RNDVI), structure-insensitive pigment index (SIPI), ratio vegetation index (RVSI), water index (WI), and normalized difference water index (NDWI), demonstrated significant potential for determining disease severity at the seedling stage. The most significant differences in reflectance between susceptible and resistant mutant lines appeared at 694.57 and 987.51 nm. The mutant lines developed were also used for the development and validation of KASP markers for leaf rust resistance genes Lr1, Lr2a, Lr3, Lr9, Lr10, and Lr17. The mutant lines had high frequencies of “a” resistance alleles (0.88) in all six Lr genes, which were significantly associated with seedling resistance and suggest the potential of favorable haplotype introgression through functional markers. Nine mutant lines characterized by the presence of “b” alleles in Lr9 and Lr10—except for one line with allele “a” in Lr9 and three mutant lines with allele “a” in Lr10—showed the progressive development of fungal haustorial mother cells 72 h after inoculation. One line from 300-Gy-dosed mutant germplasm with “b” alleles in Lr1, Lr2a, Lr10, and Lr17 and “a” alleles in Lr3 and Lr9 was characterized as resistant based on the low number of haustorial mother cells, suggesting the contribution of the “a” alleles of Lr3 and Lr9.

show abstract

Virulence of wheat leaf rust (Puccinia triticina Eriks.) in the years 2013–2015 and resistance of wheat cultivars in Slovakia

Cited by 8 publications

References 14 publications

Diversity of virulence phenotypes among annual populations of Puccinia triticina originating from common wheat in Israel during the period 2000–15

Diversity of virulence phenotypes among annual populations of Puccinia triticina originating from common wheat in Israel during the period 2000–15

Regional and temporal differentiation of virulence phenotypes of Puccinia triticina from common wheat in Russia during the period 2001–2018

Phenotyping and Exploitation of Kompetitive Allele-Specific PCR Assays for Genes Underpinning Leaf Rust Resistance in New Spring Wheat Mutant Lines

Contact Info

Product

Resources

About