Population structure analysis and association mapping of bacterial blight resistance in indica rice (Oryza sativa L.) accessions
| Autor: | Changhong Guan, Hao Chen, Hongsheng Zhang, Ruisen Wang, Yunyu Wu, Jianfei Wang, Yong-Mei Bao, Aihong Li, Nengyan Fang, Jianbo He, Wanwan He |
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| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
0301 basic medicine Veterinary medicine education.field_of_study Genetic diversity Oryza sativa Physiology Inoculation Population food and beverages Plant Science Biology biology.organism_classification 01 natural sciences 03 medical and health sciences 030104 developmental biology Xanthomonas oryzae Botany Association mapping education Agronomy and Crop Science Gene 010606 plant biology & botany Genetic association |
| Zdroj: | Plant Growth Regulation. 82:21-35 |
| ISSN: | 1573-5087 0167-6903 |
| Popis: | Bacterial blight, caused by Xanthomonas oryzae pv. oryzae (Xoo), is a serious disease in rice production worldwide. To understand the genetic diversity of bacterial blight resistance a population consisting of 175 indica accessions from nine countries was collected and detected their association between SSR (Simple Sequence Repeat) markers and resistance to six bacterial races. The resistance phenotypes of various rice accessions were evaluated through artificial inoculation under controlled conditions in 2013 and 2014. Association analysis showed that 17 SSR markers were significantly associated with resistance to four bacterial races and the phenotypic variations explained (PVE) ranged from 7.43 to 15.05%. Among the 17 associated SSR markers, two SSR markers located in previously reported genes regions, and 15 SSR markers were newly identified in this study. These results validated a new approach to map resistance genes of rice to bacterial blight. These markers could be used for marker-assisted selection (MAS) in rice bacterial blight resistance breeding programs. |
| Databáze: | OpenAIRE |
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