OsBGLU19 and OsBGLU23 regulate disease resistance to bacterial leaf streak in rice

LI Bei-bei; LIU Ying-gao; WU Tao; WANG Ji-peng; XIE Gui-rong; CHU Zhao-hui; DING Xin-hua

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OsBGLU19 and OsBGLU23 regulate disease resistance to bacterial leaf streak in rice

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β-Glucosidase belongs to the glycoside hydrolase I family, which is widely present in multiple species and responds to various biotic and abiotic stresses. In rice, whether β-glucosidase is involved in the interaction between plants and microorganisms is not clear. In this study, we found that the expression of several genes encoding β-glucosidases, including OsBGLU19 and OsBGLU23, were upregulated after inoculation with Xanthomonas oryzae pv. oryzicola (Xoc) and downregulated after inoculation with X. oryzae pv. oryzae ( Xoo). The respective insertion mutants of OsBGLU19 and OsBGLU23, bglu19 and bglu23 , were more susceptible to Xoc infection. The expression of OsAOS2, a key gene in the jasmonic acid signal pathway, was dramatically downregulated after inoculation with Xoc in the bglu19 and bglu23 mutants. Simultaneously, the expression of downstream disease resistance-related genes, such as OsPR1a, OsPR5 and a key transcription factors OsWRKY72 were obviously downregulated. The resistance mediated by OsBGLU19 and OsBGLU23 to bacterial leaf streak is related to disease resistance-related genes above mentioned.

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《农业科学学报（英文版）》 |2019年第6期|1199-1210|共12页
作者
LI Bei-bei; LIU Ying-gao; WU Tao; WANG Ji-peng; XIE Gui-rong; CHU Zhao-hui; DING Xin-hua;
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State Key Laboratory of Crop Biology/Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, Shandong Agricultural University, Tai’an 271018, P.R.China;

State Key Laboratory of Crop Biology/Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, Shandong Agricultural University, Tai’an 271018, P.R.China;

State Key Laboratory of Crop Biology/Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, Shandong Agricultural University, Tai’an 271018, P.R.China;

State Key Laboratory of Crop Biology/Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, Shandong Agricultural University, Tai’an 271018, P.R.China;

State Key Laboratory of Crop Biology/Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, Shandong Agricultural University, Tai’an 271018, P.R.China;

State Key Laboratory of Crop Biology/Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, Shandong Agricultural University, Tai’an 271018, P.R.China;

State Key Laboratory of Crop Biology/Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, Shandong Agricultural University, Tai’an 271018, P.R.China;

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OsBGLU19 and OsBGLU23 regulate disease resistance to bacterial leaf streak in rice

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