The interspecific variation of plant traits in brassicas engenders stronger aphid suppression than the intraspecific variation of single plant trait

Silva, José Hiago C.; Saldanha, Alan V.; Carvalho, Rayana M. R.; Machado, Carolina F.M.; Flausino, Bruno F.; Antonio, Adilson Castro; Gontijo, Lessando M.

doi:10.1007/s10340-021-01421-z

Cited by 7 publications

(4 citation statements)

References 46 publications

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“…This delay in the arrival of predators, observed in both seasons in comparison to S. frugiperda , may reduce the predators’ control efficiency when the maize is most susceptible to the pest. Thus, strategies to advance their arrival and retain the predators in the area should be adopted to improve the biological control of S. frugiperda in the first weeks of plant development [ 42 , 51 , 52 ].…”

Section: Discussionmentioning

confidence: 99%

A Molecular Marker to Identify Spodoptera frugiperda (JE Smith) DNA in Predators’ Gut Content

Maggio

Rossetti

Santos

et al. 2022

Insects

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Spodoptera frugiperda is a serious pest of maize and other crops worldwide. The integration of control tactics is recommended for S. frugiperda suppression because reports of insecticide and Btplant-resistance are frequent. Biological control agents would be an alternative to improve S. frugiperda control in agricultural areas. We constructed a species-specific molecular marker to detect S. frugiperda DNA in predators’ gut content and estimated the predation rates of ladybugs and earwigs on S. frugiperda in maize crops. Predators were sampled in Pirassununga, São Paulo state, Brazil, in 2020 and 2021. Using the species-specific molecular marker in laboratory conditions, we estimated the half-life time to detect S. frugiperda DNA in the gut contents of Hippodamia convergens as 6.16 h and Doru luteipes as 25.72 h. The weekly predation rate of S. frugiperda by predators in maize crop varied from 0 to 42.1% by ladybugs and from 0 to 9.2% by D. luteipes. Predation events on S. frugiperda by predators were more frequent during the maize reproductive stage. Our results confirmed that predators might contribute to S. frugiperda suppression in maize fields. However, further studies of prey–predator interactions and agricultural landscapes are essential for a better understanding of predator dynamics in crops.

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Section: Discussionmentioning

confidence: 99%

A Molecular Marker to Identify Spodoptera frugiperda (JE Smith) DNA in Predators’ Gut Content

Maggio

Rossetti

Santos

et al. 2022

Insects

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“…6 Furthermore, when combined with other IPM practices such as pesticides or yellow sticky traps, the trap plants efficiently suppress Diaphorina citri, 7 whiteflies (Trialeurodes vaporariorum), 8 and Ascia larvae. 9 Intercropping strategy has been widely explored in tea (Camellia sinensis L.) plantations in recent years, establishing diverse scenarios such as aromatic plant-tea, fruit-tea, and legume-tea intercropping systems. [10][11][12][13][14][15][16] Intercropping trap plants provide alternative strategies for pest population control.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, genotypic cultivars of wheat can be used as trap plants to reduce aphid infestation on focal wheat plants 6 . Furthermore, when combined with other IPM practices such as pesticides or yellow sticky traps, the trap plants efficiently suppress Diaphorina citri , 7 whiteflies ( Trialeurodes vaporariorum ), 8 and Ascia larvae 9 . Intercropping strategy has been widely explored in tea ( Camellia sinensis L.) plantations in recent years, establishing diverse scenarios such as aromatic plant–tea, fruit–tea, and legume–tea intercropping systems 10–16 .…”

Section: Introductionmentioning

confidence: 99%

Intercropped Flemingia macrophylla successfully traps tea aphid (Toxoptera aurantia) and alters associated networks to enhance tea quality

Gao,

Tang,

Zhang

et al. 2023

Pest Management Science

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BACKGROUNDThe tea aphid, Toxoptera aurantia is a destructive pest causing severe damage to the quality and yield of tea, Camellia sinensis. Relying on chemical insecticides to control this pest causes adverse ecological and economic consequences. Trap plants are an eco‐friendly alternative strategy to mitigate pest damage on focal plants by attracting target insects and natural enemies. Yet, the utilization of trap plants in tea plantations remains limited. Besides, the effects of the trap plant on the tea aphid‐ant‐predator community and tea quality and yield are unknown.RESULTSIntercropped Flemingia macrophylla successfully trapped tea aphids and enhanced the complexity of aphid–ant–predator networks over three consecutive years compared to monoculture management. Moreover, F. macrophylla significantly increased the abundance of natural predators by 3100% and species richness by 57%. The increasing predators suppressed the aphid population and hampered its spillover to neighbouring tea plants. Consequently, F. macrophylla improved tea quality by an 8% increase in soluble sugar and a 26% reduction in polyphenols to amino acids ratio.CONCLUSIONThe study illustrated that F. macrophylla is a suitable trap crop for tea aphid control in tea plantations. This legume increases species nodes and strengthens multiple connections in aphid‐associated communities through its cascade effects, improving tea quality. These findings shed light on the potential application of trap plants in tea plantations as an efficient integrated pest management (IPM) strategy.This article is protected by copyright. All rights reserved.

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“…Aphid pests and seed predators impact both canola and pea (22,23). Offset times of flowering and production can lead to lower rates of brassica pest outbreaks in either member of a polyculture (24). In terms of broad ecological mechanisms, doubling the species number on a single piece of ground at the macro (plant) scale may have cascading effects on various interacting communities such as pests, beneficial insects, and soil microbial communities (25,26).…”

Section: Introductionmentioning

confidence: 99%

Increasing Biodiversity and Land-Use Efficiency Through Pea (Pisum aestivum)-Canola (Brassica napus) Intercropping (Peaola)

Madsen¹,

Parks²,

Friesen³

et al. 2022

Front. Soil Sci.

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Intercropping is an ancient agricultural management practice quickly re-gaining interest in mechanized agricultural systems. Mechanized management practices have led to a decreased biodiversity at the macro- and micro-fauna levels. These agricultural practices have also resulted in the degradation of soil and long-term inefficiencies in land, water, and nutrients. The inland Pacific Northwest (iPNW) of the United States of America is a wheat-dominated cropping system. The integration of winter and spring legumes and oilseeds has improved the biodiversity and nutrient-use efficiency of the cropping systems. This article examines the feasibility of pea-canola (peaola) intercropping in dryland production systems of the iPNW. In two site years, small plot peaola trials were established near Davenport, WA. Overall, the land equivalence ratio (LER) of peaola was found to be 1.46, showing an increase in efficiency of the system. Increasing the N fertilizer application rates did not affect peaola yield, indicating that peaola has low demand for N inputs. The effects of peaola on insects and bacterial diversity were examined on replicated large scale strip trials. Peaola was found to have significantly greater numbers of beneficial insects than the monoculture controls. There were no significant differences between the diversity of the soil bacterial communities found in peaola vs. pea and canola monocultures. However, we found that the strict core soil bacterial microbiome of peaola was larger than the monocultures and included core members from both the canola and pea soil microbiomes. In conclusion, the widespread adoption of peaola would likely increase the biodiversity and increase the land use efficiency of dryland production systems in the iPNW.

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The interspecific variation of plant traits in brassicas engenders stronger aphid suppression than the intraspecific variation of single plant trait

Cited by 7 publications

References 46 publications

A Molecular Marker to Identify Spodoptera frugiperda (JE Smith) DNA in Predators’ Gut Content

A Molecular Marker to Identify Spodoptera frugiperda (JE Smith) DNA in Predators’ Gut Content

Intercropped Flemingia macrophylla successfully traps tea aphid (Toxoptera aurantia) and alters associated networks to enhance tea quality

Increasing Biodiversity and Land-Use Efficiency Through Pea (Pisum aestivum)-Canola (Brassica napus) Intercropping (Peaola)

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