Induction of resistance of corn plants to <i>Spodoptera frugiperda</i> (J. E. Smith, 1797) (Lepidoptera: Noctuidae) by application of silicon and gibberellic acid

Alvarenga, Renata Ribeiro; Moraes, Jair Campos; Auad, Alexander Machado; Coelho, Miriam Gabrielle; Nascimento, A. M.

doi:10.1017/s0007485316001176

Cited by 49 publications

(28 citation statements)

References 49 publications

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“…The total area of each leaf section was measured before being supplied to larvae and the area of food remnants determined as the leaf sections were exchanged in Petri dishes using an AM300 leaf area meter (ADC Bioscientific Ltd, Hoddesdon, UK). Thus, leaf area consumed during S. frugiperda larval stage in each experimental unit was calculated by subtracting the area of the leaf remnant to the total leaf area (Alvarenga, Moraes, Auad, Coelho, & Nascimento, ).…”

Section: Methodsmentioning

confidence: 99%

Silicon application promotes rice growth and negatively affects development of Spodoptera frugiperda (J. E. Smith)

Nascimento

Assis

Moraes

et al. 2017

J Applied Entomology

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Silicon (Si) has been reported to enhance plant resistance against biotic and abiotic stressors and also benefit plant growth. These effects are more pronounced in grass species, especially with soil-applied Si. This study investigated the effects of Si application on rice resistance to Spodoptera frugiperda development and plant vegetative growth. Effects of Si on rice were assessed via soil and foliar applications and compared with untreated plants (control). Si was soil-and foliar-applied as 1% silicic acid solution at a dosage equivalent to 1.4 t Si per ha. After application, leaf material was collected from Si-treated and untreated plants and placed in Petri dishes with individual S. frugiperda neonate larvae, where development was followed to adult emergence and biological parameters recorded. Vegetative growth parameters recorded in rice plants were the height, chlorophyll content, fresh and dry weights of shoots, and shoot Si content. No effects of Si application were observed on the durations of larval and pupal stages, larval and pupal survival, and sex ratio of S. frugiperda. Insects fed leaves from Si-treated plants exhibited lower leaf consumption, larval and pupal weights, longevity of males and females, number of eggs, and egg viability. The negative effects were correlated with higher rice Si content. Si application to rice increased plant height, chlorophyll content and dry weight. Our study demonstrates that foliarapplied Si is as efficient as soil-applied Si in negatively affecting S. frugiperda development and providing beneficial effects on rice plant growth. K E Y W O R D Sfall armyworm, integrated pest management, Oryza sativa L., plant resistance, silicic acid

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Section: Methodsmentioning

confidence: 99%

Silicon application promotes rice growth and negatively affects development of Spodoptera frugiperda (J. E. Smith)

Nascimento

Assis

Moraes

et al. 2017

J Applied Entomology

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“…Among other biological parameters, the rate of fecundity was the most affected in Spodoptera frugiperda female derived from caterpillars feeding on corn diet treated with Si [ 39 ].…”

Section: Formation Of Physical Barriers To Insectsmentioning

confidence: 99%

Silicon and Mechanisms of Plant Resistance to Insect Pests

Alhousari

Greger

2018

Plants

130

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This paper reviews the most recent progress in exploring silicon-mediated resistance to herbivorous insects and the mechanisms involved. The aim is to determine whether any mechanism seems more common than the others as well as whether the mechanisms are more pronounced in silicon-accumulating than non-silicon-accumulating species or in monocots than eudicots. Two types of mechanisms counter insect pest attacks: physical or mechanical barriers and biochemical/molecular mechanisms (in which Si can upregulate and prime plant defence pathways against insects). Although most studies have examined high Si accumulators, both accumulators and non-accumulators of silicon as well as monocots and eudicots display similar Si defence mechanisms against insects.

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“…Several recent studies have demonstrated a positive association between the application of silicon sources to plants and increased plant resistance to insects . Silicon‐based insect resistance is thought to center around two main mechanisms: mechanical (physical) and biochemical/molecular .…”

Section: Introductionmentioning

confidence: 99%

Do silicon and nitric oxide induce resistance to Mahanarva spectabilis (Hemiptera: Cercopidae) in forage grasses?

Alvarenga

Auad

Moraes

et al. 2019

Pest Management Science

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BACKGROUND Great efforts have been made to identify grasses that are resistant to spittlebugs (Hemiptera: Cercopidae). However, the time required to develop and launch new cultivars is relatively long. The employment of resistance inducers is a current strategy that may be useful for the control of insect pests. This analysis evaluates the feasibility of using the chemical inducers silicon and nitric oxide to increase spittlebug resistance based on changes in forage grass vegetative characteristics and the biological traits of Mahanarva spectabilis (Distant, 1909). RESULTS Mahanarva spectabilis nymphs and adults can cause significant damage to forage grasses. Furthermore, silicon and nitric oxide inducers were not sufficient to lessen this damage by positively influencing the growth and development of forage grasses. These inducers did not negatively alter the biological parameters of M. spectabilis or diminish its population. However, phenolic compound concentrations increased when forage grasses were treated with silicon or attacked by adult insects, but this parameter was not useful to predict spittlebug resistance. This fact suggests that the physiological and biochemical changes caused by silicon should be further studied. CONCLUSION The current analysis demonstrated that application of the chemical inducers silicon and nitric oxide is currently not a viable strategy for the effective and economic management of M. spectabilis on Brachiaria ruziziensis, Pennisetum purpureum and Digitaria sp. © 2019 Society of Chemical Industry

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Induction of resistance of corn plants to Spodoptera frugiperda (J. E. Smith, 1797) (Lepidoptera: Noctuidae) by application of silicon and gibberellic acid

Cited by 49 publications

References 49 publications

Silicon application promotes rice growth and negatively affects development of Spodoptera frugiperda (J. E. Smith)

Silicon application promotes rice growth and negatively affects development of Spodoptera frugiperda (J. E. Smith)

Silicon and Mechanisms of Plant Resistance to Insect Pests

Do silicon and nitric oxide induce resistance to Mahanarva spectabilis (Hemiptera: Cercopidae) in forage grasses?

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