Evaluation of a novel molecular marker associated with the tan spot disease response in wheat
After nearly 40 years of DNA molecular marker development in plant breeding, the wheat research community has amassed an extensive collection of molecular markers which have been widely and successfully used for selection of agronomic, physiological and disease resistance traits in wheat breeding pr...
| Main Authors: | , |
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| Format: | Journal Article |
| Language: | English |
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MDPI
2021
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| Online Access: | http://hdl.handle.net/20.500.11937/87605 |
| _version_ | 1848764929431044096 |
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| author | See, Pao Theen Moffat, Caroline |
| author_facet | See, Pao Theen Moffat, Caroline |
| author_sort | See, Pao Theen |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | After nearly 40 years of DNA molecular marker development in plant breeding, the wheat research community has amassed an extensive collection of molecular markers which have been widely and successfully used for selection of agronomic, physiological and disease resistance traits in wheat breeding programs. Tan spot is a major fungal disease of wheat and a significant global economic challenge and is caused by the necrotrophic fungal pathogen Pyrenophora tritici-repentis (Ptr). Here, the potential for using a PCR-based marker (Ta1AS3422) present on the short arm of wheat chromosome 1A, was evaluated for effectiveness in distinguishing tan spot disease susceptibility. The marker was initially screened against 40 commercial Australian hexaploid wheat varieties, and those that amplified the marker had an overall lower disease score (2.8±0.7 for seedlings and 2.4±0.4 for plants at the tillering stage), compared to those lacking the marker which exhibited a higher disease score (3.6±0.8 for both growth stages). The potential of Ta1AS3422 as a marker for the tan spot disease response was further assessed against a panel of 100 commercial Australian hexaploid wheat varieties. A significant association was observed between marker absence/presence and tan spot disease rating (Pearson’s chi-squared test, 2 (6) = 20.53, p = 0.002), with absence of Ta1AS3422 associated with susceptibility. This simple and cost-effective PCR-based marker may be useful for varietal improvement against tan spot, although further work is required to validate its effectiveness. |
| first_indexed | 2025-11-14T11:27:10Z |
| format | Journal Article |
| id | curtin-20.500.11937-87605 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T11:27:10Z |
| publishDate | 2021 |
| publisher | MDPI |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-876052022-03-03T01:01:56Z Evaluation of a novel molecular marker associated with the tan spot disease response in wheat See, Pao Theen Moffat, Caroline Science & Technology Life Sciences & Biomedicine Agronomy Agriculture yellow spot SSR microsatellite Pyrenophora tritici-repentis ToxA wheat breeding FUSARIUM HEAD BLIGHT RESISTANCE POLYMORPHISM SENSITIVITY BLOTCH TOXA SUSCEPTIBILITY VALIDATION DIVERSITY SELECTION After nearly 40 years of DNA molecular marker development in plant breeding, the wheat research community has amassed an extensive collection of molecular markers which have been widely and successfully used for selection of agronomic, physiological and disease resistance traits in wheat breeding programs. Tan spot is a major fungal disease of wheat and a significant global economic challenge and is caused by the necrotrophic fungal pathogen Pyrenophora tritici-repentis (Ptr). Here, the potential for using a PCR-based marker (Ta1AS3422) present on the short arm of wheat chromosome 1A, was evaluated for effectiveness in distinguishing tan spot disease susceptibility. The marker was initially screened against 40 commercial Australian hexaploid wheat varieties, and those that amplified the marker had an overall lower disease score (2.8±0.7 for seedlings and 2.4±0.4 for plants at the tillering stage), compared to those lacking the marker which exhibited a higher disease score (3.6±0.8 for both growth stages). The potential of Ta1AS3422 as a marker for the tan spot disease response was further assessed against a panel of 100 commercial Australian hexaploid wheat varieties. A significant association was observed between marker absence/presence and tan spot disease rating (Pearson’s chi-squared test, 2 (6) = 20.53, p = 0.002), with absence of Ta1AS3422 associated with susceptibility. This simple and cost-effective PCR-based marker may be useful for varietal improvement against tan spot, although further work is required to validate its effectiveness. 2021 Journal Article http://hdl.handle.net/20.500.11937/87605 10.3390/agriculture11060513 English http://creativecommons.org/licenses/by/4.0/ MDPI fulltext |
| spellingShingle | Science & Technology Life Sciences & Biomedicine Agronomy Agriculture yellow spot SSR microsatellite Pyrenophora tritici-repentis ToxA wheat breeding FUSARIUM HEAD BLIGHT RESISTANCE POLYMORPHISM SENSITIVITY BLOTCH TOXA SUSCEPTIBILITY VALIDATION DIVERSITY SELECTION See, Pao Theen Moffat, Caroline Evaluation of a novel molecular marker associated with the tan spot disease response in wheat |
| title | Evaluation of a novel molecular marker associated with the tan spot disease response in wheat |
| title_full | Evaluation of a novel molecular marker associated with the tan spot disease response in wheat |
| title_fullStr | Evaluation of a novel molecular marker associated with the tan spot disease response in wheat |
| title_full_unstemmed | Evaluation of a novel molecular marker associated with the tan spot disease response in wheat |
| title_short | Evaluation of a novel molecular marker associated with the tan spot disease response in wheat |
| title_sort | evaluation of a novel molecular marker associated with the tan spot disease response in wheat |
| topic | Science & Technology Life Sciences & Biomedicine Agronomy Agriculture yellow spot SSR microsatellite Pyrenophora tritici-repentis ToxA wheat breeding FUSARIUM HEAD BLIGHT RESISTANCE POLYMORPHISM SENSITIVITY BLOTCH TOXA SUSCEPTIBILITY VALIDATION DIVERSITY SELECTION |
| url | http://hdl.handle.net/20.500.11937/87605 |