<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>Plant-parasitic nematodes cause severe damage to the various agricultural crops, leading to economic losses for farmers. Therefore, identification and development of novel and environmentally benign nematicides is critically important. In this study, a silver nanoparticle (AgNP) formulation was synthesized, characterized, and investigated as a potential nematicide against rice root-knot nematode, <italic>Meloidogyne gramnicola</italic>, on rice (<italic>Oryza sativa</italic>). A series of lab assays (water and sand screening) and glasshouse experiments (using soilless system, autoclaved soil, and naturally infested soil) were conducted to examine the nematicidal effects of AgNP. The results from lab assays revealed 0.1 µg/ml as the minimum concentration for 100% irreversible nematode mortality after 12 hr in the water screening test. However, results from the sand screening test indicated 100% nematicidal effect of AgNP at 2 µg/ml after 24 hr of incubation. In glasshouse assays in soilless system of rice cultivation, 1 µg/ml concentration of AgNP applied directly to the trays achieved significant suppression of root gall formation. The effective dosage to kill nematodes in field soil assays was determined to be 3 µg/ml, which is lower than the value of 150 µg/ml reported in the literature. No visible adverse effect of AgNP was observed on seed germination or plant growth in all the experiments. The results indicate that AgNP has effective nematicidal activity against <italic>M. graminicola</italic> in rice.</p>
</abstract>

Plant-parasitic nematodes cause severe damage to the various agricultural crops, leading to economic losses for farmers. Therefore, identification and development of novel and environmentally benign nematicides is critically important. In this study, a silver nanoparticle (AgNP) formulation was synthesized, characterized, and investigated as a potential nematicide against rice root-knot nematode, Meloidogyne gramnicola, on rice (Oryza sativa). A series of lab assays (water and sand screening) and glasshouse experiments (using soilless system, autoclaved soil, and naturally infested soil) were conducted to examine the nematicidal effects of AgNP. The results from lab assays revealed 0.1 µg/ml as the minimum concentration for 100% irreversible nematode mortality after 12 hr in the water screening test. However, results from the sand screening test indicated 100% nematicidal effect of AgNP at 2 µg/ml after 24 hr of incubation. In glasshouse assays in soilless system of rice cultivation, 1 µg/ml concentration of AgNP applied directly to the trays achieved significant suppression of root gall formation. The effective dosage to kill nematodes in field soil assays was determined to be 3 µg/ml, which is lower than the value of 150 µg/ml reported in the literature. No visible adverse effect of AgNP was observed on seed germination or plant growth in all the experiments. The results indicate that AgNP has effective nematicidal activity against M. graminicola in rice.

<article-title xml:lang="en">Silver nanoparticles as a potential nematicide against <italic>Meloidogyne graminicola</italic>


Journal of Nematology

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Silver nanoparticles as a potential nematicide against

Plant-parasitic nematodes cause severe damage to the various agricultural crops, leading to economic losses for farmers. Therefore, identification and...

Silver nanoparticles as a potential nematicide against Meloidogyne graminicola

Online veröffentlicht: 17. März 2020

Seitenbereich: 1 - 9

DOI: https://doi.org/10.21307/jofnem-2020-002

Schlüsselwörter
Management, Nematicide, Rice, Root-knot nematode, Silver nanoparticles.

© 2020 Richa Baronia et al., published by Sciendo.

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Silver nanoparticles as a potential nematicide against Meloidogyne graminicola

Online veröffentlicht: 17. März 2020

Seitenbereich: 1 - 9

DOI: https://doi.org/10.21307/jofnem-2020-002

SchlüsselwörterManagement, Nematicide, Rice, Root-knot nematode, Silver nanoparticles.

© 2020 Richa Baronia et al., published by Sciendo.

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Schlüsselwörter
Management, Nematicide, Rice, Root-knot nematode, Silver nanoparticles.