Unveiling a Novel Source of Resistance to Bacterial Blight in Medicinal Wild Rice, Oryza officinalis
文献类型: 外文期刊
作者: Chen, Ling 1 ; Yin, Fuyou 1 ; Zhang, Dunyu 1 ; Xiao, Suqin 1 ; Zhong, Qiaofang 1 ; Wang, Bo 1 ; Ke, Xue 1 ; Ji, Zhiyuan 2 ; Wang, Lingxian 1 ; Zhang, Yun 1 ; Jiang, Cong 1 ; Liu, Li 1 ; Li, Jinlu 1 ; Lu, Yuanda 1 ; Yu, Tengqiong 1 ; Cheng, Zaiquan 1 ;
作者机构: 1.Minist Agr, Yunnan Acad Agr Sci, Biotechnol & Germplasm Resources Inst, Yunnan Prov Key Lab Agr Biotechnol, Kunming 650205, Yunnan, Peoples R China
2.Chinese Acad Agr Sci CAAS, Inst Crop Sci, Natl Key Facil Crop Gene Resources & Genet Improv, Beijing 100081, Peoples R China
3.Yunnan Agr Univ, Coll Plant Protect, Kunming 650201, Yunnan, Peoples R China
关键词: bacterial blight; Oryza officinalis; resistance; wild rice; medicinal rice
期刊名称:LIFE-BASEL ( 影响因子:3.251; )
ISSN:
年卷期: 2022 年 12 卷 6 期
页码:
收录情况: SCI
摘要: Bacterial blight (BB) caused by Xanthomonas oryzae pv. oryzae (Xoo) is among the oldest known bacterial diseases found for rice in Asia. It is the most serious bacterial disease in many rice growing regions of the world. A total of 47 resistance (R) genes (Xa1 to Xa47) have been identified. Nonetheless, these R genes could possibly be defeated to lose their qualitative nature and express intermediate phenotypes. The identification of sources of novel genetic loci regulating host plant resistance is crucial to develop an efficient control strategy. Wild ancestors of cultivated rice are a natural genetic resource contain a large number of excellent genes. Medicinal wild rice (Oryza officinalis) belongs to the CC genome and is a well-known wild rice in south China. In this study, O. officinalis was crossed with cultivated rice HY-8 and their hybrids were screened for BB resistance genes deployed through natural selection in wild rice germplasm. The molecular markers linked to R genes for BB were used to screen the genomic regions in wild parents and their recombinants. The gene coding and promoter regions of major R genes were inconsistently found in O. officinalis and its progenies. Oryza officinalis showed resistance to all thirty inoculated Xoo strains with non-availability of various known R genes. The results indicated the presence of novel genomic regions for BB resistance in O. officinalis. The present study not only provides a reference to investigate medicinal rice for R gene(s) identification against BB but also identified it as a new breeding material for BB resistance.
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