Silicon and growth regulator induced defence against maize fall armyworm,
            <i>Spodoptera frugiperda</i>
            (J.E. Smith)

Chinnadurai, Srinivasan; Chandramani, P.; Mookiah, Shanthi; Mahendran, P. P.; Renuka, Raman

doi:10.1080/10426507.2023.2222207

Cited by 1 publication

(2 citation statements)

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“…Xenobiotics metabolism is crucial for detoxifying and eliminating xenobiotics, including pesticides and plant defensive compounds ( Li, Schuler & Berenbaum, 2007 ; Silva-Brandão et al, 2021 ). Therefore, the disruption of this process could reduce the fall armyworm’s ability to detoxify harmful substances, potentially leading to its death ( Chinnadurai et al, 2023 ; Acevedo et al, 2021 ). Previous studies have suggested similar impacts of silicon on the metabolic processes of pests, reinforcing our results ( Ma & Yamaji, 2006 ).…”

Section: Discussionmentioning

confidence: 99%

“…Research has shown that Si can strengthen plant defenses against various pests and diseases, making plants less palatable or more difficult for pests to feed on ( Ahmad et al, 2023 ; Abbasi et al, 2022 ). Moreover, Si is known to promote plant growth and increase tolerance to abiotic stresses, which can contribute to overall crop health and yield ( Chinnadurai et al, 2023 ; Khosa et al, 2022 ; Ahmad et al, 2022 ).…”

Section: Introductionmentioning

confidence: 99%

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Transcriptomic and biochemical insights into fall armyworm (Spodoptera frugiperda) responses on silicon-treated maize

Ul Haq,

Zhang,

Gou

et al. 2024

PeerJ

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Background The fall armyworm, Spodoptera frugiperda, is an agricultural pest of significant economic concern globally, known for its adaptability, pesticide resistance, and damage to key crops such as maize. Conventional chemical pesticides pose challenges, including the development of resistance and environmental pollution. The study aims to investigate an alternative solution: the application of soluble silicon (Si) sources to enhance plant resistance against the fall armyworm. Methods Silicon dioxide (SiO2) and potassium silicate (K2SiO3) were applied to maize plants via foliar spray. Transcriptomic and biochemical analyses were performed to study the gene expression changes in the fall armyworm feeding on Si-treated maize. Results Results indicated a significant impact on gene expression, with a large number of differentially expressed genes (DEGs) identified in both SiO2 and K2SiO3 treatments. Furthermore, Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis identified critical DEGs involved in specific pathways, including amino acid, carbohydrate, lipid, energy, xenobiotics metabolisms, signal transduction, and posttranslational modification, significantly altered at both Si sources. Biochemical analyses further revealed that Si treatments inhibited several enzyme activities (glutamate dehydrogenase, trehalase, glucose-6-phosphate dehydrogenase, chitinase, juvenile hormone esterase, and cyclooxygenase while simultaneously inducing others (total protein, lipopolysaccharide, fatty acid synthase, ATPase, and cytochrome P450), thus suggesting a toxic effect on the fall armyworm. In conclusion, Si applications on maize influence the gene expression and biochemical activities of the fall armyworm, potentially offering a sustainable pest management strategy.

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