Mapping quantitative trait loci for disease resistance to false smut of rice
Abstract False smut of rice, an important emerging disease caused by Ustilaginoidea virens, greatly reduces grain yield and deteriorates grain quality in many rice-growing regions worldwide. Identification of quantitative trait loci (QTL) conferring false smut resistance will facilitate incorporatio...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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BMC
2020-07-01
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| Series: | Phytopathology Research |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1186/s42483-020-00059-6 |
| _version_ | 1819207903721029632 |
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| author | Yanqing Han Deqiang Li Jun Yang Fu Huang Hongyan Sheng Wenxian Sun |
| author_facet | Yanqing Han Deqiang Li Jun Yang Fu Huang Hongyan Sheng Wenxian Sun |
| author_sort | Yanqing Han |
| collection | DOAJ |
| description | Abstract False smut of rice, an important emerging disease caused by Ustilaginoidea virens, greatly reduces grain yield and deteriorates grain quality in many rice-growing regions worldwide. Identification of quantitative trait loci (QTL) conferring false smut resistance will facilitate incorporation of false smut resistance into elite cultivars. In this study, a set of recombinant inbred lines (RILs) derived from a cross of a resistant rice landrace MR183–2 and a high susceptible line 08R2394 were evaluated to map resistance QTLs for false smut. A total of 179 simple sequence repeat (SSR) polymorphic markers were identified for constructing genetic linkage maps. Using a composite interval mapping method, five false smut resistance QTLs were detected on chromosomes 2, 4, 8 and 11 in the RIL population. Among these QTLs, qFsr8–1 within a small region on chromosome 8 represents a major quantitative locus explaining the greatest phenotypic variance. Gene annotation in this major QTL region provides a theoretical basis for cloning of resistance QTLs. The SSR markers genetically linked to qFsr8–1 are valuable for marker-assisted breeding for false smut resistance in rice. In addition, nine QTLs for heading date were detected in this population. Correlation analysis of disease resistance score and heading date indicates that false smut resistance negatively correlates with the growth period length in rice. |
| first_indexed | 2024-12-23T05:30:53Z |
| format | Article |
| id | doaj.art-0f8d3395cf4645728883c239369a9b89 |
| institution | Directory Open Access Journal |
| issn | 2524-4167 |
| language | English |
| last_indexed | 2024-12-23T05:30:53Z |
| publishDate | 2020-07-01 |
| publisher | BMC |
| record_format | Article |
| series | Phytopathology Research |
| spelling | doaj.art-0f8d3395cf4645728883c239369a9b892022-12-21T17:58:28ZengBMCPhytopathology Research2524-41672020-07-012111110.1186/s42483-020-00059-6Mapping quantitative trait loci for disease resistance to false smut of riceYanqing Han0Deqiang Li1Jun Yang2Fu Huang3Hongyan Sheng4Wenxian Sun5College of Plant Protection, Shanxi Agricultural UniversityCollege of Agronomy, Sichuan Agricultural UniversityDepartment of Plant Pathology and Key Laboratory for Plant Pathology, Ministry of Agriculture, China Agricultural UniversityCollege of Agronomy, Sichuan Agricultural UniversityDepartment of Plant Pathology, Washington State UniversityDepartment of Plant Pathology and Key Laboratory for Plant Pathology, Ministry of Agriculture, China Agricultural UniversityAbstract False smut of rice, an important emerging disease caused by Ustilaginoidea virens, greatly reduces grain yield and deteriorates grain quality in many rice-growing regions worldwide. Identification of quantitative trait loci (QTL) conferring false smut resistance will facilitate incorporation of false smut resistance into elite cultivars. In this study, a set of recombinant inbred lines (RILs) derived from a cross of a resistant rice landrace MR183–2 and a high susceptible line 08R2394 were evaluated to map resistance QTLs for false smut. A total of 179 simple sequence repeat (SSR) polymorphic markers were identified for constructing genetic linkage maps. Using a composite interval mapping method, five false smut resistance QTLs were detected on chromosomes 2, 4, 8 and 11 in the RIL population. Among these QTLs, qFsr8–1 within a small region on chromosome 8 represents a major quantitative locus explaining the greatest phenotypic variance. Gene annotation in this major QTL region provides a theoretical basis for cloning of resistance QTLs. The SSR markers genetically linked to qFsr8–1 are valuable for marker-assisted breeding for false smut resistance in rice. In addition, nine QTLs for heading date were detected in this population. Correlation analysis of disease resistance score and heading date indicates that false smut resistance negatively correlates with the growth period length in rice.http://link.springer.com/article/10.1186/s42483-020-00059-6Rice false smutQuantitative trait lociUstilaginoidea virensGene mappingDisease resistance gene |
| spellingShingle | Yanqing Han Deqiang Li Jun Yang Fu Huang Hongyan Sheng Wenxian Sun Mapping quantitative trait loci for disease resistance to false smut of rice Phytopathology Research Rice false smut Quantitative trait loci Ustilaginoidea virens Gene mapping Disease resistance gene |
| title | Mapping quantitative trait loci for disease resistance to false smut of rice |
| title_full | Mapping quantitative trait loci for disease resistance to false smut of rice |
| title_fullStr | Mapping quantitative trait loci for disease resistance to false smut of rice |
| title_full_unstemmed | Mapping quantitative trait loci for disease resistance to false smut of rice |
| title_short | Mapping quantitative trait loci for disease resistance to false smut of rice |
| title_sort | mapping quantitative trait loci for disease resistance to false smut of rice |
| topic | Rice false smut Quantitative trait loci Ustilaginoidea virens Gene mapping Disease resistance gene |
| url | http://link.springer.com/article/10.1186/s42483-020-00059-6 |
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