首页|OsWRKY65 enhances immunity against fungal and bacterial pathogens in rice

OsWRKY65 enhances immunity against fungal and bacterial pathogens in rice

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Diverse bacterial and fungal pathogens attack plants,causing biotic stress and severe yield losses glob-ally.These losses are expected to become more serious as climate change improves conditions for many pathogens.Therefore,identifying genes conferring broad-spectrum disease resistance and elucidating their underlying mechanisms provides important resources for plant breeding.WRKY transcription fac-tors affect plant growth and stress responses.However,the functions of many WRKY proteins remain to be elucidated.Here,we demonstrated the role of rice(Oryza sativa)WRKY group Ⅲ transcription factor OsWRKY65 in immunity.OsWRKY65 localized to the nucleus and acted as transcriptional repressor.Genetic and molecular functional analyses showed that OsWRKY65 increases resistance to the fungal pathogen Fusarium fujikuroi through downregulation of GA signaling and upregulation of JA signaling.Moreover,OsWRKY65 modulated the expression of the key genes that confer susceptibility or resistance to Xanthomonas oryzae pv.oryzae to enhance immunity against the pathogen.In particular,OsWRKY65 directly bound to the promoter region of OsSWEET13 and repressed its expression.Taken together,our findings demonstrate that the OsWRKY65 enhances resistance to fungal and bacterial pathogens in rice.

Bacterial blightBakanae diseaseBroad-spectrum disease resistanceOriza sativaOsWRKY65Rice

Seungmin Son、Giha Song、Suhyeon Nam、Jinjeong Lee、Duk-Ju Hwang、Eun-Jung Suh、Sang Ryeol Park

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National Institute of Agricultural Sciences,Rural Development Administration,Jeonju 54874,Republic of Korea

Department of Agriculture,Forestry and Bioresources,Plant Genomics and Breeding Institute,Research Institute of Agriculture and Life Sciences,Seoul National University,Seoul 08826,Republic of Korea

Department of Crop Science and Biotechnology,Jeonbuk National University,Jeonju 54896,Republic of Korea

Research Program for Agricultural Science and Technology DevelopmentFel-lowship Program of the National Institute of Agricultural Sciences,Rural Development Administra-tion,Republic of KoreaFel-lowship Program of the National Institute of Agricultural Sciences,Rural Development Administra-tion,Republic of Korea

PJ01570601PJ01661001PJ01570601

2024

10.1016/j.cj.2024.01.007

作物学报(英文版)

作物学报(英文版)

CSTPCD
ISSN：
年,卷(期)：2024.12(2)
  • 71