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Sponsored by:Institute of Botany, Chinese Academy of Sciences, Botanical Society of China
Co-hosted by:Key Laboratory of Soybean Molecular Design Breeding, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences
Institute of Biotechnology and Germplasm Resources, Yunnan AgriculturalAcademy
Fujian Agriculture and Forestry University
Hunan Provincial Key Laboratory of Phytohormones and Growth Development, Hunan Agricultural University
State Key Laboratory of Crops Biology, Shandong Agricultural University
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Table of Content
- Mining and Preliminary Mapping of Rice Resistance Genes against Bacterial Leaf Streak
- Yanli Fang, Chuanyu Tian, Ruyi Su, Yapei Liu, Chunlian Wang, Xifeng Chen, Wei Guo, Zhiyuan Ji
- Chinese Bulletin of Botany. 2024, 59(1): 1-0. doi:10.11983/CBB23071
- Abstract ( 55 ) PDF (1857KB) ( 62 ) Save
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Bacterial leaf streak (BLS), caused by Xanthomonas
oryzae pv. oryzicola (Xoc), is one of the most important disease of rice, which is now highly
prevalent in rice-growing regions of China, especially in Southern China
(including Jiangsu, Zhejiang, Fujian, and Guangdong). Planting resistant varieties is considered as the best
approach to control BLS. However, no
resistant cultivars are available owing to scarce genetic resources for BLS
resistance. Two highly BLS-resistant material (M1 and D1) has been discovered
in our research by screening germplasm against BLS via syringe inoculation.
Multi-strain inoculation showed that M1 had the characteristics of race-nonspecific broad-spectrum resistance (RNS BSR). The genetic population analysis
showed that the cultivated rice M1 harbored a single dominant new gene of
resistance to bacterial stripe disease Xo-3. Through BSA-seq and
association analysis, Xo-3 was initially mapped in a candidate region on
chromosome 2. The mining of germplasm resources of BLS-resistant and the
analysis of the genetic basis of its resistance will help promote the
understanding of the interaction mechanism between rice and Xoc, to cultivate new varieties of BLS-resistant
rice, and to formulate scientific strategies for controlling BLS.