Nematicidal activity of a biopolymer chitosan at different molecular weights against root-knot nematode, Meloidogyne incognita
The nematicidal activity of four molecular weights (2.27 × 105, 3.60 × 105, 5.97 × 105, and 9.47 × 105 g/mol) of a biopolymer chitosan was assayed against the root-knot nematode, Meloidogyne incognita, in vitro and in pot experiments. In laboratory assays, the nematode mortality was significantly in...
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| Format: | Article |
| Language: | English |
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Czech Academy of Agricultural Sciences
2012-12-01
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| Series: | Plant Protection Science |
| Subjects: | |
| Online Access: | https://pps.agriculturejournals.cz/artkey/pps-201204-0006_nematicidal-activity-of-a-biopolymer-chitosan-at-different-molecular-weights-against-root-knot-nematode-meloid.php |
| _version_ | 1797898555275345920 |
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| author | Mohamed S. Khalil Mohamed E. I. Badawy |
| author_facet | Mohamed S. Khalil Mohamed E. I. Badawy |
| author_sort | Mohamed S. Khalil |
| collection | DOAJ |
| description | The nematicidal activity of four molecular weights (2.27 × 105, 3.60 × 105, 5.97 × 105, and 9.47 × 105 g/mol) of a biopolymer chitosan was assayed against the root-knot nematode, Meloidogyne incognita, in vitro and in pot experiments. In laboratory assays, the nematode mortality was significantly influenced by exposure times and chitosan molecular weight. Low molecular weight chitosan (2.27 × 105 g/mol) was the most effective in killing the nematode with EC50 of 283.47 and 124.90 mg/l after 24 and 48 h of treatment, respectively. In a greenhouse bioassay, all the compounds mixed in soil at one- and five-fold concentrations of the LC50 value significantly reduced population, egg mass, and root galling of tomato seedlings compared with the untreated control. In general, the nematicidal activity of these compounds was increased dramatically with a decrease in the molecular weight. The results suggest that the chitosan at low molecular weight may serve as a natural nematicide |
| first_indexed | 2024-04-10T08:15:07Z |
| format | Article |
| id | doaj.art-5874058420184f38b3f9bdbcd5c57476 |
| institution | Directory Open Access Journal |
| issn | 1212-2580 1805-9341 |
| language | English |
| last_indexed | 2024-04-10T08:15:07Z |
| publishDate | 2012-12-01 |
| publisher | Czech Academy of Agricultural Sciences |
| record_format | Article |
| series | Plant Protection Science |
| spelling | doaj.art-5874058420184f38b3f9bdbcd5c574762023-02-23T03:44:05ZengCzech Academy of Agricultural SciencesPlant Protection Science1212-25801805-93412012-12-0148417017810.17221/46/2011-PPSpps-201204-0006Nematicidal activity of a biopolymer chitosan at different molecular weights against root-knot nematode, Meloidogyne incognitaMohamed S. Khalil0Mohamed E. I. Badawy1Central Agricultural Pesticides Laboratory, Agriculture Research Center, El-Sabaheya, Alexandria, EgyptDepartment of Pesticide Chemistry and Technology, Faculty of Agriculture, Alexandria University, El-Shatby, Alexandria, EgyptThe nematicidal activity of four molecular weights (2.27 × 105, 3.60 × 105, 5.97 × 105, and 9.47 × 105 g/mol) of a biopolymer chitosan was assayed against the root-knot nematode, Meloidogyne incognita, in vitro and in pot experiments. In laboratory assays, the nematode mortality was significantly influenced by exposure times and chitosan molecular weight. Low molecular weight chitosan (2.27 × 105 g/mol) was the most effective in killing the nematode with EC50 of 283.47 and 124.90 mg/l after 24 and 48 h of treatment, respectively. In a greenhouse bioassay, all the compounds mixed in soil at one- and five-fold concentrations of the LC50 value significantly reduced population, egg mass, and root galling of tomato seedlings compared with the untreated control. In general, the nematicidal activity of these compounds was increased dramatically with a decrease in the molecular weight. The results suggest that the chitosan at low molecular weight may serve as a natural nematicidehttps://pps.agriculturejournals.cz/artkey/pps-201204-0006_nematicidal-activity-of-a-biopolymer-chitosan-at-different-molecular-weights-against-root-knot-nematode-meloid.phpin vitro and plot experimentmolecular weightnatural nematicidemematode mortality |
| spellingShingle | Mohamed S. Khalil Mohamed E. I. Badawy Nematicidal activity of a biopolymer chitosan at different molecular weights against root-knot nematode, Meloidogyne incognita Plant Protection Science in vitro and plot experiment molecular weight natural nematicide mematode mortality |
| title | Nematicidal activity of a biopolymer chitosan at different molecular weights against root-knot nematode, Meloidogyne incognita |
| title_full | Nematicidal activity of a biopolymer chitosan at different molecular weights against root-knot nematode, Meloidogyne incognita |
| title_fullStr | Nematicidal activity of a biopolymer chitosan at different molecular weights against root-knot nematode, Meloidogyne incognita |
| title_full_unstemmed | Nematicidal activity of a biopolymer chitosan at different molecular weights against root-knot nematode, Meloidogyne incognita |
| title_short | Nematicidal activity of a biopolymer chitosan at different molecular weights against root-knot nematode, Meloidogyne incognita |
| title_sort | nematicidal activity of a biopolymer chitosan at different molecular weights against root knot nematode meloidogyne incognita |
| topic | in vitro and plot experiment molecular weight natural nematicide mematode mortality |
| url | https://pps.agriculturejournals.cz/artkey/pps-201204-0006_nematicidal-activity-of-a-biopolymer-chitosan-at-different-molecular-weights-against-root-knot-nematode-meloid.php |
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