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Chinese Journal of Biological Control ›› 2021, Vol. 37 ›› Issue (1): 150-155.DOI: 10.16409/j.cnki.2095-039x.2021.01.030

• RESEARCH REPORTS • Previous Articles    

Xylo-oligosaccharides Elicits Disease Resistance in Arabidopsis

MIU Jinlu, ZHANG Huajian   

  1. Key Laboratory of Biology and Sustainable Management of Plant Diseases and Pests of Anhui Higher Education Institutes/College of Plant Protection, Anhui Agricultural University, Hefei 230036, China
  • Received:2020-07-10 Published:2021-02-23

Abstract: Plant-origined xylo-oligosaccharides (XOS) have many excellent physiological and biological properties in animals. However, whether XOS acts as an oligosaccharins to induce plant defense remains unclear. In this study, the induced disease resistance to different pathogens upon XOS with different concentrations was investigated. Here, we found that XOS can induce plant resistance against hemibiotrophic pathogen Pseudomonas syringae pv. tomato DC3000, biotrophic pathogen Tobacco mosaic virus and necrotrophic pathogen Sclerotinia sclerotiorum in a dose-dependent manner. The induced resistance effect to Pst DC3000 and TMV increased as XOS concentration increased to 100 μg/mL. While XOS concentration increased to 50 μg/mL, the induced resistance effect to S. sclerotiorum was no longer rising. The results indicated that another new biotic sugar, XOS, can broadly elicit disease resistance in Arabidopsis, which provide a basis for elucidating the signal transduction of disease resistance induced by XOS and designing efficient strategies for plant disease control.

Key words: xylo-oligosaccharides, oligosaccharins, disease resistance, pathogen

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