Detecting the Conspecific: Herbivory-Induced Olfactory Cues in the Fall Armyworm (Lepidoptera: Noctuidae) DOI Creative Commons
David A Ingber, Shawn A. Christensen, Hans T. Alborn

et al.

Metabolites, Journal Year: 2021, Volume and Issue: 11(9), P. 583 - 583

Published: Aug. 30, 2021

The fall armyworm (FAW), Spodoptera frugiperda (Smith), is a polyphagous pest whose larval feeding threatens several economically important crops worldwide with especially severe damage to corn (Zea mays L.). Field-derived resistance conventional pesticides and Bt toxins have threatened the efficacy of current management strategies, necessitating development alternative methods technologies. One possible avenue use volatile organic compounds (VOCs) other secondary metabolites that are produced sequestered by plants as response feeding. effects conspecific on oviposition preferences fitness were examined using two-choice experiments, trials, targeted metabolomics, VOC analyses. There was significant preference for lacked damage, larvae fed tissue from damaged exhibited reduced weights head capsule widths. All promoted significantly increased metabolite concentrations compared without any Metabolite differences driven primarily linoleic acid (which directly toxic armyworm) tricarboxylic acids. Several VOCs in known deterrents warrant further investigation an integrated context.

Language: Английский

Silicon fertilization in maize increases attractiveness of nocturnal herbivore‐induced plant volatiles to Spodoptera frugiperda natural enemies DOI Creative Commons
Patrícia Pereira, Tiago Morales‐Silva, Rosamara Souza Coelho

et al.

Pest Management Science, Journal Year: 2025, Volume and Issue: unknown

Published: March 12, 2025

Abstract BACKGROUND Silicon (Si) fertilization has been well‐documented to enhance plant resistance against insect pests by increasing the abrasiveness and toughness of leaf tissues. Additionally, Si also interacts with jasmonic acid pathway, which modulates antiherbivore induced defenses, including emission herbivore‐induced volatiles (HIPVs) that attract natural enemies. In this study, we examined influence on attractiveness nocturnal HIPVs from maize plants infested fall armyworm (FAW), Spodoptera frugiperda (JE Smith), predatory earwig Doru luteipes (Scudder). RESULTS laboratory assays, found did not alter constitutive predator D . However, upon infestation FAW larvae, Si‐fertilized emitted a volatile blend was more attractive D. Although composition non‐fertilized similar, terpene neryl acetate exclusively detected in HIPV plants. Tests synthetic demonstrated alone at specific concentration CONCLUSION This study demonstrates primes indirect defenses specifically amount blend, is responsible for enhanced earwig. Thus, can act as priming agent potentially recruitment once are FAW, thereby contributing suppress pest populations. © 2025 The Author(s). Pest Management Science published John Wiley & Sons Ltd behalf Society Chemical Industry.

Language: Английский

Citations

0
Harnessing plant silicon defenses for biological control of herbivorous insects DOI
Tarikul Islam, Matthew S. Brown, Albrecht M. Koppenhöfer

et al.

Trends in Plant Science, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

Language: Английский

Citations

0
Silicon Supplementation Reinforces Maize Defence to Defeat the Oriental Armyworm DOI

Farhana Shameen,

Abid Hussain Wani,

Iqra Gulzar

et al.

Journal of Applied Entomology, Journal Year: 2025, Volume and Issue: unknown

Published: April 5, 2025

ABSTRACT Maize is a critical component of global food security; however, pests like the oriental armyworm ( Mythimna separata Walker) cause significant yield losses to this crop. Conventional control approaches for managing insect rely on pesticide applications, which pose environmental risks and can lead pest resistance. Thus, necessity alternative management strategies emphasised. Silicon (Si) proposed as substitute due its ability mitigate plethora biotic abiotic stresses in plants. To evaluate effectiveness Si controlling armyworm, maize plants were treated with three concentrations (T1: 500 mg/L, T2: 750 T3: 1000 mg/L) then infested larvae. The performance was assessed by evaluating larval feeding oviposition preference, mandibular morphology, survival rates weight gain. Results showed mean rate 63% T3 compared 96% control. larvae fed leaves twice that those Si‐treated leaves. Likewise, incisor length significantly shorter (177 μm) than (447 μm). Moreover, less favourable egg laying, only 20% eggs laid them. These findings indicate supplementation enhances resistance infestation armyworm. This Si‐mediated against underscores potential sustainable chemical pesticides integrated strategies.

Language: Английский

Citations

0
Priming of rice defense against a sap-sucking insect pest brown planthopper by silicon DOI
Yibin Lin,

Xianhui Lin,

Chaohui Ding

et al.

Journal of Pest Science, Journal Year: 2022, Volume and Issue: 95(3), P. 1371 - 1385

Published: Jan. 7, 2022

Language: Английский

Citations

15
Prospects of the Application of Garlic Extracts and Selenium and Silicon Compounds for Plant Protection against Herbivorous Pests: A Review DOI Creative Commons
Nadezhda Golubkina, Vladimir Zayachkovsky, Sergey Sheshnitsan

et al.

Agriculture, Journal Year: 2022, Volume and Issue: 12(1), P. 64 - 64

Published: Jan. 5, 2022

Protection of plants against herbivorous pests is an important aspect that guarantees agricultural efficiency, i.e., food provision to populations. Environmental, water and foodstuff pollution by toxic pesticides, along with climate changes, highlight the necessity achieve intensive development ecologically safe methods herbivory control. This review discusses modern plant protection insect pests: biofortification selenium, treatment bulk nano-silicon, utilization garlic extracts. The peculiarities such defense are described in relation growth stimulation as well increasing yield nutritional value products. Direct methods, mechanical, hormonal, through secondary metabolites and/or mineral element accumulation, indirect via predator attraction discussed. Examples pest control during grain/seed storage emphasized. A comparison sodium selenate, silicon containing fertilizer (Siliplant) extract efficiency analyzed on Raphanus sativus var. lobo infested cruciferous gall midge Contarinia nasturtii, indicating quick annihilation a result foliar application or silicon-containing fertilizer, Siliplant.

Language: Английский

Citations

15
Silicon fertilisation affects morphological and immune defences of an insect pest and enhances plant compensatory growth DOI Creative Commons
Tarikul Islam, Ben D. Moore, Scott N. Johnson

et al.

Journal of Pest Science, Journal Year: 2022, Volume and Issue: 96(1), P. 41 - 53

Published: Jan. 13, 2022

Abstract Herbivorous insects have evolved various anti-predator defences, including morphological, behavioural, and immune which can make biocontrol of herbivorous pests challenging. Silicon (Si) accumulation in plants is a potent physical defence against mandibulate insects. However, it remains uncertain how Si affects the defences insect herbivores plant following herbivory. We grew model grass, Brachypodium distachyon , hydroponically with (+Si) or without (–Si) investigated plant-mediated effects on cotton bollworm, Helicoverpa armigera integrating morphological (i.e. integument resistance thickness), defences. also examined compensatory growth leaf trichome production. Larval growth, consumption, were lower when feeding +Si compared to –Si plants. thickness, defensive behaviours, haemocyte density, lysozyme-like activity haemolymph unaffected by Si. Larvae fed had higher phenoloxidase (PO) total-PO activities than larvae plants, although this did not enhance melanisation response larvae. Furthermore, supplies increased compensation for herbivory constitutive production, whereas induced production only provide first evidence an herbivore. suggest that Si-supplemented could contribute their vulnerability natural enemies high PO may impose fitness costs (e.g. delayed development).

Language: Английский

Citations

14
Silicon Supplementation of Maize Impacts Fall Armyworm Colonization and Increases Predator Attraction DOI
Patrícia Aparecida Pimenta Pereira, Amanda Maria Nascimento, Bruno Henrique Sardinha de Souza

et al.

Neotropical Entomology, Journal Year: 2021, Volume and Issue: 50(4), P. 654 - 661

Published: June 28, 2021

Language: Английский

Citations

18
Effectiveness of silicon on immature stages of the fall armyworm [Spodoptera frugiperda (J. E. Smith)] DOI Creative Commons
Inzamam Ul Haq, Kexin Zhang,

Shahbaz Ali

et al.

Journal of King Saud University - Science, Journal Year: 2022, Volume and Issue: 34(6), P. 102152 - 102152

Published: June 10, 2022

Fall armyworm (Spodoptera frugiperda) is a polyphagous pest causing economic losses to various crops. Commonly, chemical pesticides are used control this pest, but these have lot of side effects. Therefore, alternate environment-friendly method inevitable for the management S. frugiperda. Silicon (Si) supplementation crop plants develops induced resistance against pests. As damage done by larval stage armyworm, laboratory experiment was carried out investigate impact Si on immature stages Treatments consisted silicon dioxide (SiO2) and potassium silicate (K2SiO3) with two methods application (foliar spray soil application). No treatment. The current results showed that all treatments significantly (p ≤ 0.05) affected foliar SiO2 caused highest mortality (40.33 ± 3.45 %) compared K2SiO3 (29.33 3.26 (4.67 1.03 %). greatest effect observed in early larvae as insect higher 1st (19.67 2.33 2nd (12.67 instar growth. Similarly, recorded one day (10.67 2.07 days after hatching. Among sources, more than control. Meanwhile, Si's (26.67 17.26 (22.89 14.46 A similar pupa ratio (59.67 %), adult fecundity (146.67 18.36 eggs), neonate emergence (37.83 4.62 In sex ratio, no significant sources or observed. study negative Hence, may diminish frugiperda colonization initial maize because it can decrease increase newly emerging larvae.

Language: Английский

Citations

13
Siliceous and non‐nutritious: Nitrogen limitation increases anti‐herbivore silicon defences in a model grass DOI Creative Commons
Scott N. Johnson, Jamie M. Waterman, Richard Wuhrer

et al.

Journal of Ecology, Journal Year: 2021, Volume and Issue: 109(11), P. 3767 - 3778

Published: July 29, 2021

Abstract Silicon (Si) accumulation alleviates a diverse array of environmental stresses in many plants, including conferring physical resistance against insect herbivores. It has been hypothesised that grasses, particular, utilise ‘low metabolic cost’ Si for structural and defensive roles under nutrient limitation. While carbon (C) concentrations often negatively correlate with concentrations, the relationship between nitrogen (N) status is more variable. Moreover, impacts N limitation on constitutive defences (e.g. silica prickle cells) herbivores are unknown. We determined how affected deposition model grass Brachypodium distachyon changes these impacted herbivore Helicoverpa armigera growth rates. used scanning electron microscopy (SEM) energy dispersive X‐ray spectrometry conjunction mapping (XRM) to quantify structures leaves determine patterns. also supply jasmonic acid (JA) pathway, master regulator induced arthropod reduced shoot by over 40%, but increased root mass (+21%), leaf (+50%) density (+28%) flattened (+76%) cells. Energy‐dispersive spectroscopy XRM established was being deposited structures, together hooked cells macro‐hairs. Herbivore relative rates (RGR) were than 115% lower Si‐supplied plants compared without correlated concentration cell density. RGR further positively concentrations. Increases JA following induction pathway at least doubled Synthesis . highly regulated availability, promoting both line resource availability hypothesis. These results indicate grasses use ‘low‐cost Si’ when resources limited suggest plant productivity may benefit from optimising conventional fertilisers fertilisation.

Language: Английский

Citations

17
Establishing the Role of Silicon (Si) in Plant Resistance To Insects: A Bibliometric Approach DOI
Ipsita Samal,

Tanmaya Kumar Bhoi,

Deepak Kumar Mahanta

et al.

Silicon, Journal Year: 2023, Volume and Issue: 16(5), P. 2119 - 2128

Published: Dec. 22, 2023

Language: Английский

Citations

6