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Loss of Function of a Rice TPR-domain RNA-binding Protein Confers Broad-spectrum Disease Resistance
Xiaogang Zhou, Haicheng Liao, Mawsheng Chern, Junjie Yin, Yufei Chen, Jianping Wang, Xiaobo Zhu, Zhixiong Chen, Can Yuan, Wen Zhao, Jing Wang, Weitao Li, Min He, Bingtian Ma, Jichun Wang, Peng Qin, Weilan Chen, Yuping Wang, Jiali Liu, Yangwen Qian, Wenming Wang, Xianjun Wu, Ping Li, Lihuang Zhu, Shigui Li, Pamela C. Ronald, and Xuewei Chen
PNAS
Abstract
Crops carrying broad-spectrum resistance loci provide an effective strategy for controlling infectious disease because these loci typically confer resistance to diverse races of a pathogen or even multiple species of pathogens. Despite their importance, only a few crop broad-spectrum resistance loci have been reported. Here, we report the identification and characterization of the rice bsr-k1 (broad-spectrum resistance Kitaake-1) mutant, which confers broad-spectrum resistance against Magnaporthe oryzae and Xanthomonas oryzae pv oryzae with no major penalty on key agronomic traits. Map-based cloning reveals that Bsr-k1 encodes a tetratricopeptide repeats (TPRs)-containing protein, which binds to mRNAs of multiple OsPAL (OsPAL1–7) genes and promotes their turnover. Loss of function of the Bsr-k1 gene leads to accumulation of OsPAL1–7 mRNAs in the bsr-k1 mutant. Furthermore, overexpression of OsPAL1 in wild-type rice TP309 confers resistance to M. oryzae, supporting the role of OsPAL1. Our discovery of the bsr-k1 allele constitutes a significant conceptual advancement and provides a valuable tool for breeding broad-spectrum resistant rice.
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DOI:10.1073/pnas.1705927115 |
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Loss of Function of a Rice TPR-domain RNA-binding Protein Confers Broad-spectrum Disease Resistance |
Authors |
Xiaogang Zhou, Haicheng Liao, Mawsheng Chern, Junjie Yin, Yufei Chen, Jianping Wang, Xiaobo Zhu, Zhixiong Chen, Can Yuan, Wen Zhao, Jing Wang, Weitao Li, Min He, Bingtian Ma, Jichun Wang, Peng Qin, Weilan Chen, Yuping Wang, Jiali Liu, Yangwen Qian, Wenming Wang, Xianjun Wu, Ping Li, Lihuang Zhu, Shigui Li, Pamela C. Ronald, and Xuewei Chen |
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2018-02-08 |
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Crops carrying broad-spectrum resistance loci provide an effective strategy for controlling infectious disease because these loci typically confer resistance to diverse races of a pathogen or even multiple species of pathogens. Despite their importance, only a few crop broad-spectrum resistance loci have been reported. Here, we report the identification and characterization of the rice bsr-k1 (broad-spectrum resistance Kitaake-1) mutant, which confers broad-spectrum resistance against Magnaporthe oryzae and Xanthomonas oryzae pv oryzae with no major penalty on key agronomic traits. Map-based cloning reveals that Bsr-k1 encodes a tetratricopeptide repeats (TPRs)-containing protein, which binds to mRNAs of multiple OsPAL (OsPAL1–7) genes and promotes their turnover. Loss of function of the Bsr-k1 gene leads to accumulation of OsPAL1–7 mRNAs in the bsr-k1 mutant. Furthermore, overexpression of OsPAL1 in wild-type rice TP309 confers resistance to M. oryzae, supporting the role of OsPAL1. Our discovery of the bsr-k1 allele constitutes a significant conceptual advancement and provides a valuable tool for breeding broad-spectrum resistant rice. |
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Crops carrying broad-spectrum resistance loci provide an effective strategy for controlling infectious disease because these loci typically confer resistance to diverse races of a pathogen or even multiple species of pathogens. Despite their importance, only a few crop broad-spectrum resistance loci have been reported. Here, we report the identification and characterization of the rice bsr-k1 (broad-spectrum resistance Kitaake-1) mutant, which confers broad-spectrum resistance against Magnaporthe oryzae and Xanthomonas oryzae pv oryzae with no major penalty on key agronomic traits. Map-based cloning reveals that Bsr-k1 encodes a tetratricopeptide repeats (TPRs)-containing protein, which binds to mRNAs of multiple OsPAL (OsPAL1–7) genes and promotes their turnover. Loss of function of the Bsr-k1 gene leads to accumulation of OsPAL1–7 mRNAs in the bsr-k1 mutant. Furthermore, overexpression of OsPAL1 in wild-type rice TP309 confers resistance to M. oryzae, supporting the role of OsPAL1. Our discovery of the bsr-k1 allele constitutes a significant conceptual advancement and provides a valuable tool for breeding broad-spectrum resistant rice. |
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