Wirulencja populacji Puccinia triticina sprawcy rdzy brunatnej na pszenicy i pszenżycie w Polsce w latach 2016–2017

Czajowski, Grzegorz; Strzembicka, A.; Karská, K.

doi:10.37317/biul-2019-0105

Cited by 2 publications

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“…2-27.6% of the fungal isolates tested. In the previous period of research carried out by Czajowski et al (2011) and by Hanzalová et al (2013;, the pathotypes 12720, 12724 and 12762 appeared more frequently. A common feature of these pathotypes is virulence against the following genes: Lr1, Lr3, Lr11, Lr15, Lr17 and Lr21 (Czajowski et al, 2016).…”

Section: Resultsmentioning

confidence: 88%

An analysis of the functionality of molecular markers related to the Lr19 gene conditioning resistance to wheat leaf rust

Kiel

Weigt

Karpińska

et al. 2020

Zemdirbyste-Agriculture

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Among all cereals, common wheat (Triticum aestivum L.) occupies the largest area of crops worldwide. Wheat leaf rust, caused by the pathogen Puccinia recondita f. sp. tritici considerably reduces the yield of wheat. Breeding for resistance combined with selection based on molecular markers may become an effective tool in the struggle against fungal diseases. Lr19 is the gene that carries high resistance to wheat leaf rust. In recent years, we have seen the development of many molecular markers in close neighbourhood of the Lr19 gene, e.g., SCS265, SCS253, GB, Xwmc221, XustSSR2001-7DL, Xgwm37 and Xgwm44. The aim of the study was to investigate the functionality of molecular markers related to the Lr19 gene. The study was based on two reference genotypes with the Lr19 gene ('Agatha' and Lr19) and three lines strongly infested by wheat leaf rust. Seven molecular markers were analysed, but only two of them (GB and Xwmc221) proved to be specific to the gene under study. These markers were used for analysis of 25 wheat genotypes, which were evaluated for leaf rust resistance in field conditions to confirm their usefulness for selection of breeding material. These findings point to the need of continuous search for functional molecular markers giving repeatable and reliable results.

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Section: Resultsmentioning

confidence: 88%

An analysis of the functionality of molecular markers related to the Lr19 gene conditioning resistance to wheat leaf rust

Kiel

Weigt

Karpińska

et al. 2020

Zemdirbyste-Agriculture

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“…revealed 21 races (Czajowski et al, 2016). Clonal reproduction of the pathogen predominates, and the sexual cycle contributes marginally to pathogenic variation, which is apparently maintained mainly through migration among populations and mutation (Huerta-Espino et al, 2011;Kolmer et al, 2019).…”

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confidence: 99%

Assessing new SSR markers for utility and informativeness in genetic studies of brown rust fungi on wheat, triticale, and rye

et al. 2021

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The aim of the present study was to validate new simple‐sequence repeat (SSR) markers and use them to assess genetic variability among 24 isolates of Puccinia triticina collected from wheat (Pt‐wheat) and triticale (Pt‐triticale), and 15 isolates of P. recondita f. sp. secalis (Prs) collected from rye. The Pt and Prs isolates were tested for virulence on a set of 35 Thatcher wheat near‐isogenic lines, eight rye lines with known resistance genes, and 53 triticale cultivars with uncharacterized leaf rust resistance. Molecular genotypes were determined using a newly developed set of 34 SSR microsatellite primer pairs. All SSR markers tested on Pt isolates successfully amplified fragments of appropriate size. When tested on the Prs isolates, 21 out of the 34 Pt SSRs amplified expected fragments. Sixteen of these 21 SSRs were polymorphic, providing for the first time microsatellite markers to study genetic variation in Prs. Based on virulence data, variation among Prs isolates was low, probably due to the small number of rye differential lines available. Much higher variation for virulence was observed within the collection of Pt isolates from wheat and triticale, and two separate groups were established with mixed host origin. Substantial genetic variation was detected among the isolates studied with the SSR markers, assuming two different models of SSR evolution (infinite alleles model and stepwise mutation model). The newly developed set of SSR markers proved their effectiveness in detecting genetic variation and should be useful in further population genetics investigations of the two pathogens.

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Wirulencja populacji Puccinia triticina sprawcy rdzy brunatnej na pszenicy i pszenżycie w Polsce w latach 2016–2017

Cited by 2 publications

References 0 publications

An analysis of the functionality of molecular markers related to the Lr19 gene conditioning resistance to wheat leaf rust

An analysis of the functionality of molecular markers related to the Lr19 gene conditioning resistance to wheat leaf rust

Assessing new SSR markers for utility and informativeness in genetic studies of brown rust fungi on wheat, triticale, and rye

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