Sexual recombination within the 'Kranich' race of the yellow rust fungus Puccinia striiformis f.sp. tritici on Berberis vulgaris
| Autor: | Mogens S. Hovmøller, Annemarie Fejer Justesen, Julian Rodriguez-Algaba |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
0301 basic medicine Population Rust (fungus) Alternate host Plant Science Stripe rust Horticulture 01 natural sciences Rust 03 medical and health sciences Sexual reproduction education education.field_of_study biology Inoculation Host (biology) Segregation food and beverages Common barberry biology.organism_classification 030104 developmental biology Germination Agronomy and Crop Science Teliospore 010606 plant biology & botany |
| Zdroj: | Rodriguez Algaba, J, Hovmøller, M S & Justesen, A F 2020, ' Sexual recombination within the “Kranich” race of the yellow rust fungus Puccinia striiformis f.sp. tritici on Berberis vulgaris ', European Journal of Plant Pathology, vol. 156, no. 4, pp. 1169-1173 . https://doi.org/10.1007/s10658-019-01919-4 European Journal of Plant Pathology |
| Popis: | An isolate of the “Kranich” race of the basidiomycete Puccinia striiformis f.sp. tritici (Pst), which causes yellow (stripe) rust on wheat, was selfed on Berberis vulgaris, the alternate (sexual) host for several rust fungi infecting cereals and grasses. Since 2011, the “Kranich” race has been detected in several European countries and it has contributed to the replacement of the pre-existing European Pst population. A sexual origin of the “Kranich” race has been suggested due to the high capacity of teliospore production and the genetic similarity to the populations in the centre of diversity of Pst in the near-Himalayan region. For the completion of the sexual life cycle, B. vulgaris was inoculated with basidiospores derived from germinating teliospores. Pycnia appeared on the adaxial side of the leaves 8 days after inoculation (dai) and subsequent fertilization resulted in the development of aecia on the abaxial side of the leaves from 15 dai. Inoculation of wheat seedlings with aeciospores from bulked aecia resulted in 124 progeny isolates. Twenty-three of these were randomly selected and genotyped using 19 simple sequence repeat (SSR) markers, which confirmed the parental origin of the progeny isolates. Eight heterozygous markers in the parental isolate revealed segregation in the progenies resulting in 18 novel multilocus genotypes, confirming recombination following sexual reproduction. This study demonstrated a high sexual capacity of the “Kranich” race, which highlights the risks associated with sexual reproduction under suitable conditions for rust development. |
| Databáze: | OpenAIRE |
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