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Genome-Wide Association Study of QTLs Conferring Resistance to Bacterial Leaf Streak in Rice
| Content Provider | MDPI |
|---|---|
| Author | Xie, Xiaofang Zheng, Yan Lu, Libin Yuan, Jiazheng Hu, Jie Bu, Suhong Lin, Yanyi Liu, Yinsong Guan, Huazhong Wu, Weiren |
| Copyright Year | 2021 |
| Description | Bacterial leaf streak (BLS) is a devastating rice disease caused by the bacterial pathogen, Xanthomonas oryzae pv. oryzicola (Xoc), which can result in severe damage to rice production worldwide. Based on a total of 510 rice accessions, trialed in two seasons and using six different multi-locus GWAS methods (mrMLM, ISIS EM-BLASSO, pLARmEB, FASTmrMLM, FASTmrEMMA and pKWmEB), 79 quantitative trait nucleotides (QTNs) reflecting 69 QTLs for BLS resistance were identified (LOD > 3). The QTNs were distributed on all chromosomes, with the most distributed on chromosome 11, followed by chromosomes 1 and 5. Each QTN had an additive effect of 0.20 (cm) and explained, on average, 2.44% of the phenotypic variance, varying from 0.00–0.92 (cm) and from 0.00–9.86%, respectively. Twenty-five QTNs were detected by at least two methods. Among them, qnBLS11.17 was detected by as many as five methods. Most of the QTNs showed a significant interaction with their environment, but no QTNs were detected in both seasons. By defining the QTL range for each QTN according to the LD half-decay distance, a total of 848 candidate genes were found for nine top QTNs. Among them, more than 10% were annotated to be related to biotic stress resistance, and five showed a significant response to Xoc infection. Our results could facilitate the in-depth study and marker-assisted improvement of rice resistance to BLS. |
| Starting Page | 2039 |
| e-ISSN | 22237747 |
| DOI | 10.3390/plants10102039 |
| Journal | Plants |
| Issue Number | 10 |
| Volume Number | 10 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-09-28 |
| Access Restriction | Open |
| Subject Keyword | Plants Rice Bacterial Leaf Streak Disease Resistance Multi-locus Gwas Qtn |
| Content Type | Text |
| Resource Type | Article |
