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Immune Mechanism of Ethylicin-Induced Resistance to Xanthomonas oryzae pv. oryzae in Rice
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Agricultural and Environmental Chemistry

Immune Mechanism of Ethylicin-Induced Resistance to Xanthomonas oryzae pv. oryzae in Rice
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  • Hongxia Lu
    Hongxia Lu
    National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang550025, China
    More by Hongxia Lu
  • Zhongjie Shen
    Zhongjie Shen
    National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang550025, China
  • Yujun Xu
    Yujun Xu
    National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang550025, China
    More by Yujun Xu
  • Linjing Wu
    Linjing Wu
    National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang550025, China
    More by Linjing Wu
  • Deyu Hu
    Deyu Hu
    National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang550025, China
    More by Deyu Hu
  • Runjiang Song*
    Runjiang Song
    National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang550025, China
    *Email: [email protected]. Tel/Fax: 86-851-8829-2170.
  • Baoan Song*
    Baoan Song
    National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang550025, China
    *Email: [email protected]. Tel: 86-851-88292148. Fax: 86-851-83622211.
    More by Baoan Song
Other Access OptionsSupporting Information (2)

Journal of Agricultural and Food Chemistry

Cite this: J. Agric. Food Chem. 2023, 71, 1, 288–299
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https://doi.org/10.1021/acs.jafc.2c07385
Published January 2, 2023
Copyright © 2023 American Chemical Society

Abstract

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Ethylicin (ET) was reported to be promising in the control of rice bacterial leaf blight (BLB) caused by Xanthomonas oryzae pv. oryzae (Xoo). The detailed mechanism for this process remains unknown. Disclosed here is an in-depth study on the action mode of ET to Xoo. Through plant physiological and biochemical analysis, it was found that ET could inhibit the proliferation of Xoo by increasing the content of defense enzymes and chlorophyll in rice (Oryza sativa ssp. Japonica cv. Nipponbare). Label-free quantitative proteomic analysis showed that ET affected the rice abscisic acid (ABA) signal pathway and made the critical differential calcium-dependent protein kinase 24 (OsCPK24) more active. In addition, the biological function of OsCPK24 as a mediator for rice resistance to Xoo was determined through the anti-Xoo phenotypic test of OsCPK24 transgenic rice and the affinity analysis of the OsCPK24 recombinant protein in vitro and ET. This study revealed the molecular mechanism of ET-induced resistance to Xoo in rice via OsCPK24, which provided a basis for the development of new bactericides based on the OsCPK24 protein.

Copyright © 2023 American Chemical Society

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Supporting Information

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The Supporting Information is available free of charge at https://pubs.acs.org/doi/10.1021/acs.jafc.2c07385.

  • Growth curve of Xoo (Figure S1); effects of different concentrations of ET on rice growth (Figure S2); proteomic analysis (Venn diagram, heat map, and volcano figure) (Figure S3); primer sequences of qRT-PCR (Table S1); primer Sequences of PCR (Table S2); DEPs involved in the ABA signaling pathway (Table S3) (PDF)

  • All identified proteins including differential protein expression in the treatment group compared with the control group and GO term abundance analysis proteins (XLS)

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Journal of Agricultural and Food Chemistry

Cite this: J. Agric. Food Chem. 2023, 71, 1, 288–299
Click to copy citationCitation copied!
https://doi.org/10.1021/acs.jafc.2c07385
Published January 2, 2023
Copyright © 2023 American Chemical Society

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