Genetic engineering of the Xa10 promoter for broad-spectrum and durable resistance to Xanthomonas oryzae pv. oryzae
文献类型: 外文期刊
作者: Zeng, Xuan 1 ; Tian, Dongsheng 1 ; Gu, Keyu 1 ; Zhou, Zhiyun 1 ; Yang, Xiaobei 1 ; Luo, Yanchang 1 ; White, Frank F. 4 ;
作者机构: 1.Natl Univ Singapore, Temasek Life Sci Lab, Singapore 117548, Singapore
2.Natl Univ Singapore, Dept Biol Sci, Singapore 117548, Singapore
3.Anhui Acad Agr Sci, Rice Res Inst, Beijing, Anhui, Peoples R China
4.Kansas State Univ, Dept Plant Pathol, Manhattan, KS 66506 USA
5.Nanyang Technol Univ, Sch Biol Sci, Singapore 639798, Singapore
关键词: Rice;Xa10;TAL effector;Xanthomonas oryzae pv;oryzae;bacterial blight;R gene
期刊名称:PLANT BIOTECHNOLOGY JOURNAL ( 影响因子:9.803; 五年影响因子:9.555 )
ISSN:
年卷期:
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收录情况: SCI
摘要: Many pathovars of plant pathogenic bacteria Xanthomonas species inject transcription activator-like (TAL) effectors into plant host cells to promote disease susceptibility or trigger disease resistance. The rice TAL effector-dependent disease resistance gene Xa10 confers narrow-spectrum race-specific resistance to Xanthomonas oryzae pv. oryzae (Xoo), the causal agent of bacterial blight disease in rice. To generate broad-spectrum and durable resistance to Xoo, we developed a modified Xa10 gene, designated as Xa10(E5). Xa10(E5) has an EBE-amended promoter containing 5 tandemly arranged EBEs each responding specifically to a corresponding virulent or avirulent TAL effector and a stable transgenic rice line containing Xa10(E5) was generated in the cultivar Nipponbare. The Xa10(E5) gene was specifically induced by Xoo strains that harbour the corresponding TAL effectors and conferred TAL effector-dependent resistance to the pathogens at all developmental stages of rice. Further disease evaluation demonstrated that the Xa10(E5) gene in either Nipponbare or 9311 genetic backgrounds provided broad-spectrum disease resistance to 27 of the 28 Xoo strains collected from 11 countries. The development of Xa10(E5) and transgenic rice lines provides new genetic materials for molecular breeding of rice for broad-spectrum and durable disease resistance to bacterial blight.
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