Biochemical responses and resistance characteristics of grafted combinations of Nicotiana tabacum (Solanales: Solanaceae) to plant-parasitic Meloidogyne incognita (Nematoda: Tylenchida: Heteroderidae) infestation
To investigate the biochemical mechanisms and resistance of Nicotiana tabacum graft combinations inoculated with Meloidogyne incognita. This study analyzes the changes in SOD, CAT, POD, MDA, PAL, PPO, CHT and GLU activities in the leaves and root systems of nine graft combinations, judges their dise...
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| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Taylor & Francis Group
2025-12-01
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| Series: | Journal of Plant Interactions |
| Subjects: | |
| Online Access: | https://www.tandfonline.com/doi/10.1080/17429145.2025.2486117 |
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| Summary: | To investigate the biochemical mechanisms and resistance of Nicotiana tabacum graft combinations inoculated with Meloidogyne incognita. This study analyzes the changes in SOD, CAT, POD, MDA, PAL, PPO, CHT and GLU activities in the leaves and root systems of nine graft combinations, judges their disease resistance. The results showed that the combination scion leaves of K326 and Y87 had an increased activity of defense enzymes, while the combination scion leaves of HDa exhibited a decrease in SOD, PAL, PPO enzyme activities. There were no significant differences in root enzyme activity between grafted combinations and rootstocks. Surveys revealed that all grafted combinations of N. tabacum exhibited resistance or high resistance to the disease. The resistance of the graft combination is maintained and not diminished. The G278 + K326, G278 + HDa, G279 + HDa exhibited superior performance across all indicators. This study provides a basis for the integration of new green control technologies for N.tabacum RKN disease. |
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| ISSN: | 1742-9145 1742-9153 |