Effects of intraguild interactions on <scp><i>Anticarsia gemmatalis</i></scp> and <i>Chrysodeixis includens</i> larval fitness and behavior in soybean

Ongaratto, Sabrina; Baldin, Edson Luiz Lopes; Hunt, Thomas E.; Montezano, Débora G.; Robinson, Emily A.; Santos, M. C. dos

doi:10.1002/ps.6330

Cited by 9 publications

(8 citation statements)

References 52 publications

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“…These results are in contradiction with other studies in the literature (e.g. Bentivenha et al 2016a,b;Ongaratto et al 2021), where the weight of FAW reared alone as single species…”

Section: Discussioncontrasting

confidence: 99%

Cannibalism and intraguild predation involved in the intra- and inter-specific interactions of the invasive fall armyworm, Spodoptera frugiperda (Lepidoptera: Noctuidae) and lepidopteran maize stemborers

Sokame

Musyoka

Mohammed

et al. 2022

Preprint

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Intra- and interspecific competitions play important role in determing spread and survival/death (cannibalism or intraguild predation) of organisms which share the same resource. However, the trends of relation between cannibalism and intraguild predation, and the costs and benefits of such behaviours are difficult to establish within insect communities and a little is known about how such behaviours are affected by invasive species. The present study was aimed at assessing the interactions between larvae of fall armyworm (Spodoptera frugiperda) and maize stemborers (Busseola fusca, Sesamia calamistis and Chilo partellus) in relation to cannibalism and intraguild predation when they are subjected to utilize the same resource. Experiments involving treatments with either single species of S. frugiperda or any of the stemborers or pairwise species combinations were conducted under laboratory conditions. The experimental insect larvae were reared on maize leaves and monitored until the last developmental stage where larval survival, mortality, and cannibalism and/or intraguild predation were recorded. Results of the intra-specific interaction indicated that S. frugiperda exhibited cannibalism to a larger degree than the stemborers species, especially at the late instars stages. The higher cannibalism trait in S. frugiperda turned however to competitive advantage as it led to a higher degree of intraguild predation when they cohabit with other stemborer species. Overall, interaction with S. frugiperda is thus detrimental for the stemborer species and may be an important factor to explain the invasive success of the pest. Such knowledge is essential in designing successful integrated pest management strategies.

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“…These results are in contradiction with other studies in the literature (e.g. Bentivenha et al 2016a,b;Ongaratto et al 2021), where the weight of FAW reared alone as single species…”

Section: Discussioncontrasting

confidence: 99%

Cannibalism and intraguild predation involved in the intra- and inter-specific interactions of the invasive fall armyworm, Spodoptera frugiperda (Lepidoptera: Noctuidae) and lepidopteran maize stemborers

Sokame

Musyoka

Mohammed

et al. 2022

Preprint

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“…Based in our observed larval movement, results reinforce the theory to apply insecticides and release entomopathogenic enemies early in the morning or at the dusk, when the insects will be exposed to the products. Cannibalism and predation are also causes that could impact population dynamics, and this behavior was already reported for this species and when interacting with other species 41 . Another important mortality factor in the agroecosystem is the presence of natural enemies, which was visually detected in our study and might also explain the number of missing larvae.…”

Section: Discussionsupporting

confidence: 68%

Larval movement of Anticarsia gemmatalis (Lepidoptera: Erebidae) on vegetative and reproductive stage non-Bt soybean

Ongaratto

Baldin

Hunt

et al. 2022

Preprint

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Integrated pest management (IPM) and insect resistance management (IRM) in a cropping system demands a comprehensive understanding of insect behavior, including larval movement. We evaluated the larval movement of velvetbean caterpillar, Anticarsia gemmatalis (Hübner), in a non-Bt soybean cultivar. Third to fifth instars were infested in different combinations in vegetative and reproductive soybean stages, and on-plant movement was characterized across select time points. The dispersion among plants in different positions and orientations was assessed by releasing 24-h-old larvae on the central plant of field plots. Results indicated that A. gemmatalis larvae are consistent in their movement during the day, regardless of plant section or leaf position. Over the time period of assessment, larvae gradually moved down and left the plant. Although there was not significant difference in the distance traveled by A. gemmatalis between orientations and positions, long distances were covered indicating that this species has nondirectional movement. This study provides relevant information regarding the movement of the velvetbean caterpillar, which can be used to improve insecticide spraying efficacy, improve probabilistic model predictive ability, and help design insect resistance management strategies.

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“…4,5 Despite the economic and nutritional relevance of soybean, this crop is highly susceptible to a wide range of pathogens that reduce crop quality and yield. [6][7][8][9] Among soybean pathogens, Xanthomonas axonopodis pv. glycines (Xag) is a bacterium that can cause bacterial pustule disease.…”

Section: Introductionmentioning

confidence: 99%

“…Soybeans are widely consumed as sprouts, soy milk and fermented products, providing essential dietary nutrients and antioxidants 4, 5 . Despite the economic and nutritional relevance of soybean, this crop is highly susceptible to a wide range of pathogens that reduce crop quality and yield 6–9 . Among soybean pathogens, Xanthomonas axonopodis pv.…”

Section: Introductionmentioning

confidence: 99%

Exogenous genistein enhances soybean resistance to Xanthomonas axonopodis pv. glycines

Zhang

Pang

Xin‐Yi

et al. 2022

Pest Management Science

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BACKGROUND Xanthomonas axonopodis pv. glycines (Xag) is the causal agent of bacterial pustule disease and results in enormous losses in soybean production. Although isoflavones are known to be involved in soybean resistance against pathogen infection, the effects of exogenous isoflavones on soybean plants remain unexplored. RESULTS Irrigation of soybean plants with isoflavone genistein inhibited plant growth for short periods, probably by inhibiting the tyrosine (brassinosteroids) kinase pathway, and increased disease resistance against Xag. The number of lesions was reduced by 59%–63% when applying 50 μg ml−1 genistein. The effects on disease resistance were observed for 15 days after treatment. Genistein also enhanced the disease resistance of soybean against the fungal pathogen Sclerotinia sclerotiorum. Exogenous genistein increased antioxidant capacity, decreased H2O2 level and promoted the accumulation of phenolics in Xag‐infected soybean leaves. Exogenous genistein reduced the amounts of endogenous daidzein, genistein and glycitein and increased the concentration of genistin, which was found to show strong antibacterial activity against the pathogen and to reduce the expression of virulence factor yapH, and flagella formation gene flgK. The expression of several soybean defense genes, such as chalcone isomerase, glutathione S‐transferase and 1‐aminocyclopropane‐1‐carboxylate oxidase 1, was upregulated after genistein treatment. CONCLUSIONS The effects of exogenous genistein on soybean plants were examined for the first time, revealing new insights into the roles of isoflavones in soybean defense and demonstrating that irrigation with genistein can be a suitable method to induce disease resistance in soybean plants. © 2022 Society of Chemical Industry.

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Effects of intraguild interactions on Anticarsia gemmatalis and Chrysodeixis includens larval fitness and behavior in soybean

Cited by 9 publications

References 52 publications

Cannibalism and intraguild predation involved in the intra- and inter-specific interactions of the invasive fall armyworm, Spodoptera frugiperda (Lepidoptera: Noctuidae) and lepidopteran maize stemborers

Cannibalism and intraguild predation involved in the intra- and inter-specific interactions of the invasive fall armyworm, Spodoptera frugiperda (Lepidoptera: Noctuidae) and lepidopteran maize stemborers

Larval movement of Anticarsia gemmatalis (Lepidoptera: Erebidae) on vegetative and reproductive stage non-Bt soybean

Exogenous genistein enhances soybean resistance to Xanthomonas axonopodis pv. glycines

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