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Protein Elicitor PeaT1 Efficiently Controlled Barley Yellow Dwarf Virus in Wheat

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  • Lin Li

    (State Key Laboratory of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
    Functional and Evolutionary Entomology, Gembloux Agro-Bio Tech, University of Liège, Gembloux B-5030, Belgium)

  • Shuangchao Wang

    (State Key Laboratory of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China)

  • Xiufen Yang

    (State Key Laboratory of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China)

  • Frederic Francis

    (Functional and Evolutionary Entomology, Gembloux Agro-Bio Tech, University of Liège, Gembloux B-5030, Belgium)

  • Dewen Qiu

    (State Key Laboratory of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China)

Abstract

Barley yellow dwarf virus (BYDV), transmitted by the wheat aphid, generates serious wheat yellow dwarf disease and causes great losses in agriculture. Induced resistance has attracted great attention over recent years as a biological method to control plant pathogens and herbivores. Protein elicitor PeaT1 induces defense response in plants against fungi, viruses, and aphids. In this study, wheat seeds and seedlings were soaked and sprayed with 30 μg/mL PeaT1, respectively. Then seedlings were inoculated with BYDV by viruliferous Schizaphis graminum to detect the control efficiency of PeaT1-induced resistance against BYDV. The control efficiency was over 30% on the 14th and 21st days after the inoculation access period. Quantitative real time polymerase chain reaction (Q-RT-PCR) tests showed that there was less mRNA from the BYDV coat protein in PeaT1-treated wheat seedlings than in the control group. Electrical penetration graph (EPG) tests showed that virus transmission vector S.graminum took a longer time to find probe and feeding sites on PeaT1-treated wheat seedlings. Additionally, PeaT1-treated wheat seedlings gained higher plant height and more chlorophyll a&b. These results showed that PeaT1 efficiently controlled BYDV by inhibiting BYDV proliferation, reducing the virus transmission ability of S. graminum and alleviating the symptoms of dwarfism and yellow colouring caused by BYDV. This study provided a new integrated way to control BYDV biologically.

Suggested Citation

  • Lin Li & Shuangchao Wang & Xiufen Yang & Frederic Francis & Dewen Qiu, 2019. "Protein Elicitor PeaT1 Efficiently Controlled Barley Yellow Dwarf Virus in Wheat," Agriculture, MDPI, vol. 9(9), pages 1-8, September.
    • Handle: RePEc:gam:jagris:v:9:y:2019:i:9:p:193-:d:264786
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    References listed on IDEAS

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    1. Jonathan D. G. Jones & Jeffery L. Dangl, 2006. "The plant immune system," Nature, Nature, vol. 444(7117), pages 323-329, November.
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