Identification of New Resistance Loci Against Sheath Blight Disease in Rice Through Genome-Wide Association Study : = Identification of New Resistance Loci Against Sheath Blight Disease in Rice Through Genome-Wide Association Study
Sheath blight(SB) caused by the soil borne pathogen Rhizoctonia solani is one of the most serious global rice diseases. Breeding resistant cultivar is the most economical and effective strategy to control the disease. However, no rice varieties are completely resistant to SB, and only a few reliable quantitative trait loci(QTLs) linked with SB resistance have been identified to date. In this study, we conducted a genome-wide association study(GWAS) of SB resistance using 299 varieties from the rice diversity panel 1(RDP1) that were genotyped using 44 000 high-density single nucleotide polymorphism(SNP) markers. Through artificial inoculation, we found that only 36.5% of the tested varieties displayed resistance or moderate resistance to SB. In particular, the aromatic and aus sub-populations displayed higher SB resistance than the tropical japonica(TRJ), indica and temperate japonica sub-populations. Seven varieties showed similar resistance levels to the resistant control YSBR1. GWAS identified at least 11 SNP loci significantly associated with SB resistance in the three independent trials, leading to the identification of two reliable QTLs, qSB-3 and qSB-6, on chromosomes 3 and 6. Using favorable alleles or haplotypes of significantly associated SNP loci, we estimated that both QTLs had obvious effects on reducing SB disease severity and can be used for enhancing SB resistance, especially in improving SB resistance of TRJ sub-population rice varieties. These results provided important information and genetic materials for developing SB resistant varieties through breeding..
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2018-12-29 2019 |
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| Erschienen: |
2018-12-29 |
| Enthalten in: |
Zur Gesamtaufnahme - year:2019 |
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| Enthalten in: |
Rice science - (2019), 01 vom: 29. Dez., Seite 21-31 Original Letters: Enthalten in (DE-576)284927201 (DE-576)284927201 |
| Reihe: |
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| Sprache: |
Chinesisch |
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| Weiterer Titel: |
Identification of New Resistance Loci Against Sheath Blight Disease in Rice Through Genome-Wide Association Study |
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| Beteiligte Personen: |
CHEN Zongxiang [VerfasserIn] |
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| Links: |
oversea.cnki.net [lizenzpflichtig] |
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| Anmerkungen: |
Author info:CHEN Zongxiang;FENG Zhiming;KANG Houxiang;ZHAO Jianhua;CHEN Tianxiao;LI Qianqian;GONG Hongbing;ZHANG Yafang;CHEN Xijun;PAN Xuebiao;LIU Wende;WANG Guoliang;ZUO Shimin;Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University;State Key Laboratory for Biology of Plant Diseases and Insect Pests/Institute of Plant Protection, Chinese Academy of Agricultural Sciences;Zhenjiang Agricultural Research Institute |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
CAJ623169320 |
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| 500 | |a Author info:CHEN Zongxiang;FENG Zhiming;KANG Houxiang;ZHAO Jianhua;CHEN Tianxiao;LI Qianqian;GONG Hongbing;ZHANG Yafang;CHEN Xijun;PAN Xuebiao;LIU Wende;WANG Guoliang;ZUO Shimin;Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University;State Key Laboratory for Biology of Plant Diseases and Insect Pests/Institute of Plant Protection, Chinese Academy of Agricultural Sciences;Zhenjiang Agricultural Research Institute | ||
| 520 | |a Sheath blight(SB) caused by the soil borne pathogen Rhizoctonia solani is one of the most serious global rice diseases. Breeding resistant cultivar is the most economical and effective strategy to control the disease. However, no rice varieties are completely resistant to SB, and only a few reliable quantitative trait loci(QTLs) linked with SB resistance have been identified to date. In this study, we conducted a genome-wide association study(GWAS) of SB resistance using 299 varieties from the rice diversity panel 1(RDP1) that were genotyped using 44 000 high-density single nucleotide polymorphism(SNP) markers. Through artificial inoculation, we found that only 36.5% of the tested varieties displayed resistance or moderate resistance to SB. In particular, the aromatic and aus sub-populations displayed higher SB resistance than the tropical japonica(TRJ), indica and temperate japonica sub-populations. Seven varieties showed similar resistance levels to the resistant control YSBR1. GWAS identified at least 11 SNP loci significantly associated with SB resistance in the three independent trials, leading to the identification of two reliable QTLs, qSB-3 and qSB-6, on chromosomes 3 and 6. Using favorable alleles or haplotypes of significantly associated SNP loci, we estimated that both QTLs had obvious effects on reducing SB disease severity and can be used for enhancing SB resistance, especially in improving SB resistance of TRJ sub-population rice varieties. These results provided important information and genetic materials for developing SB resistant varieties through breeding. | ||
| 610 | 2 | 4 | |a Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University |
| 610 | 2 | 4 | |a State Key Laboratory for Biology of Plant Diseases and Insect Pests/Institute of Plant Protection, Chinese Academy of Agricultural Sciences |
| 610 | 2 | 4 | |a Zhenjiang Agricultural Research Institute |
| 650 | 4 | |a 病虫害及其防治 | |
| 650 | 4 | |a 植物保护 | |
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| 650 | 4 | |a 农业科技 | |
| 650 | 4 | |a Agriculture | |
| 650 | 4 | |a genome-wide association study | |
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