Abstract
The exploration of novel, environmentally friendly, and efficient nematicides is essential, and modifying natural biomacromolecules is one feasible approach. In this study, 6-O-(trifluorobutenyl-oxadiazol)-chitosan oligosaccharide derivative was synthesized and characterized by FTIR, NMR, and TG/DTG. Its bioactivity and action mode against root-knot nematode M. incognita were estimated. The results show that the derivative shows high nematicidal activity against J2s, and egg hatching inhibitory activity at 1 mg/mL. The derivative may affect nematode ROS metabolism and further damage intestinal tissue to kill nematode. Meanwhile, by synergism with improving crop resistance, the derivative performed a high control effect on the nematode with low phytotoxicity. These findings suggested that chitosan oligosaccharide derivatives bearing fluoroalkenyl groups are promising green nematicides.
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Claims 5
Claim · model-written summary
The derivative showed high nematicidal activity against J2s of M. incognita.
- Taxon
- crope4
- Treatment
- derivativee2
- Interactor
- M. incognita
_penetrates_a_tomato_root_-_USDA-ARS.jpg?width=60)
Meloidogyne incognitae1pathogen - Outcome
- nematicidal activity against J2se2
- Value
- highe2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_penetrates_a_tomato_root_-_USDA-ARS.jpg?width=500)
Verbatim
e1“Its bioactivity and action mode against root-knot nematode M. incognita were estimated”
e2“the derivative shows high nematicidal activity against J2s, and egg hatching inhibitory activity at 1 mg/mL”
e4“by synergism with improving crop resistance, the derivative performed a high control effect on the nematode with low phytotoxicity”
Claim · model-written summary
The derivative showed egg hatching inhibitory activity at 1 mg/mL against M. incognita.
- Taxon
- crope4
- Treatment
- derivativee2
- Interactor
- M. incognitaMeloidogyne incognitae1pathogen
- Outcome
- egg hatching inhibitory activitye2
- Value
- 1 mg/mLe2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Its bioactivity and action mode against root-knot nematode M. incognita were estimated”
e2“the derivative shows high nematicidal activity against J2s, and egg hatching inhibitory activity at 1 mg/mL”
e4“by synergism with improving crop resistance, the derivative performed a high control effect on the nematode with low phytotoxicity”
Claim · model-written summary
The derivative may affect nematode ROS metabolism and damage intestinal tissue to kill the nematode.
Verbatim
e3“The derivative may affect nematode ROS metabolism and further damage intestinal tissue to kill nematode”
e4“by synergism with improving crop resistance, the derivative performed a high control effect on the nematode with low phytotoxicity”
Claim · model-written summary
The derivative gave a high control effect on the nematode when used to improve crop resistance.
Verbatim
e4“by synergism with improving crop resistance, the derivative performed a high control effect on the nematode with low phytotoxicity”
Claim · model-written summary
The derivative showed low phytotoxicity to the crop.
Verbatim
e4“by synergism with improving crop resistance, the derivative performed a high control effect on the nematode with low phytotoxicity”