Induced resistance of cucumbers to Fusarium wilt disease by synthesized N-acetylchitooligosaccharide analogues
Induced resistance of cucumbers to Fusarium wilt disease by three synthesized oligosaccharides: β-1,3-N-acetyl-glucosamine disaccharide, β-1,3-N-acetyl-glucosamine trisaccharide and Lewis<sup>a</sup> trisaccharide was investigated. In radicle phase, after the roots were soaked with β-1,...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Zhejiang University Press
2007-01-01
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| Series: | 浙江大学学报. 农业与生命科学版 |
| Subjects: | |
| Online Access: | https://www.academax.com/doi/10.3785/1008-9209.2007.01.0008 |
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| Summary: | Induced resistance of cucumbers to Fusarium wilt disease by three synthesized oligosaccharides: β-1,3-N-acetyl-glucosamine disaccharide, β-1,3-N-acetyl-glucosamine trisaccharide and Lewis<sup>a</sup> trisaccharide was investigated. In radicle phase, after the roots were soaked with β-1, 3-N-acetyl-glucosamine disaccharide and β-1, 3-N-acetyl-glucosamine trisaccharide solution, the cucumbers showed resistance to the wilt disease with relative induced efficiencies of 21.9 and 22.3, respectively; the effective induced concentration of β-1,3-Nacetyl-glucosamine oligosaccharides was at least 5 μg·mL<sup>-1</sup>. In cucumber seedling phase, the plants treated with β-1,3-N-acetyl-glucosamine disaccharide and β-1,3-N-acetyl-glucosamine trisaccharide solution by foliar spraying also showed resistance to the wilt disease with relative induced efficiencies of 28.5 and 23.5, respectively; the effective induced concentration of β-1,3-N-acetyl-glucosamine oligosaccharides was at least 10 μg·mL<sup>-1</sup>. However, in both growth phases, after the plants were treated with Lewis<sup>a</sup> trisaccharide by the same way mentioned above, they showed no resistance to the wilt disease. The cucumber resistant differences of N-acetylchitooligosaccharide analogues (β-1, 3-N-acetyl-glucosamine disaccharide and β-1, 3-N-acetyl -glucosamine trisaccharide) and Lewis<sup>a</sup> trisaccharide may be caused by the differences of the sugar residues, the substituents on the reducing terminal residue or (and) the oligosaccharide backbone structures. |
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| ISSN: | 1008-9209 2097-5155 |