Repellent and attractive effects of herbs on insects in pear orchards intercropped with aromatic plants

Tang, Guang Bo; Song, Bei Zhou; Zhao, Ling; Sang, Xu Sheng; Wan, Huihua; Zhang, Jie; Yao, Y. C.

doi:10.1007/s10457-012-9544-2

Cited by 46 publications

(35 citation statements)

References 39 publications

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“…However, the effectiveness of herb intercropping impacting herbivore abundance varies [12, 46]. Additional variability complicating understanding of the role of volatiles for associational resistance is created by the differential behavioural patterns that are likely observed for generalist versus specialist herbivores [12].…”

Section: Discussionmentioning

confidence: 99%

Utilizing associational resistance for biocontrol: impacted by temperature, supported by indirect defence

et al. 2015

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BackgroundAssociational herbivore resistance is potentiated by neighbouring heterogenic plant species that impact a focal plant’s attraction to herbivores or the damage that they cause. One mechanism to confer associational resistance is believed to be exposure to neighbour-emitted volatiles, the receivers of which range from intra- and interspecific neighbour plants to higher-trophic-level insects. In previous studies the passive adsorption of neighbour-emitted semivolatiles has been reported, but little is known regarding the mechanisms and ecological consequences on the receiver plant and its associated biota. To utilize volatile-based associational resistance for agricultural applications, it is imperative to know its effectiveness under varying diurnal temperatures and whether herbivore natural enemies, providing biological control, are impacted. Mimicking varying diurnal temperatures in a laboratory set-up, we assessed how the tritrophic model system Brassica oleracea var. italica (broccoli)–Plutella xylostella (crucifer specialist herbivore)–Cotesia vestalis (endoparasitoid of P. xylostella) is influenced by exposure to the natural semivolatile emitter plant Rhododendron tomentosum Harmaja.ResultsRhododendron tomentosum-exposed B. oleracea was less susceptible to P. xylostella oviposition at both night-time (12°C) and day-time (22°C) temperatures and less favoured and damaged by P. xylostella larvae at 12°C. Exposure did not interfere with indirect defence, i.e. attraction of the natural enemy C. vestalis on host-damaged, R. tomentosum-exposed B. oleracea under 22°C, while there was a reduction in attraction (marginal preference towards host-damaged B. oleracea) under 12°C.ConclusionsThe ability of R. tomentosum exposure to render associational resistance against an agriculturally important Brassica herbivore P. xylostella without severely compromising the specialist parasitoid C. vestalis host location encourages further studies on the potential of using this naturally abundant plant for biocontrol. The generality of our finding on temperature as a potential regulating mechanism for the efficacy of semivolatile emitter-based associational resistance towards specialist pest larval damage should be further studied in natural and agricultural associations. Our study emphasizes the need to develop techniques to compare volatiles at the leaf versus air interface and associate their appearance and ecological role with times of activity and level of specialisation of herbivores and their natural enemies.

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Section: Discussionmentioning

confidence: 99%

Utilizing associational resistance for biocontrol: impacted by temperature, supported by indirect defence

et al. 2015

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“…using natural products, release of natural enemies, and the push‐pull strategy) have been investigated to reduce aphid infestations and limit their damage to an acceptable level. Among these methods, intercropping with companion plants (CPs) is a promising eco‐friendly approach . These CPs can be suggested as natural diffusers of semiochemicals, primarily monoterpenes (C 10 H 16 ), and sesquiterpenes (C 15 H 24 ), which function as repellents or arrestants and can increase the protection of cultivated plants towards aphids .…”

Section: Introductionmentioning

confidence: 99%

“…Among these methods, intercropping with companion plants (CPs) is a promising eco-friendly approach. [3][4][5] These CPs can be suggested as natural diffusers of semiochemicals, primarily monoterpenes (C 10 H 16 ), and sesquiterpenes (C 15 H 24 ), which function as repellents or arrestants and can increase the protection of cultivated plants towards aphids. 6 The perception of potentially repellent plant volatile organic compounds (VOCs) through aphids sensilla (rhinaria, located in the insect antenna) can increase the deterrence effect, keeping populations away from crops, disrupting their settlement and, most of all, reducing their performance and thus inhibiting the development of their population.…”

Section: Introductionmentioning

confidence: 99%

“…20 Nevertheless, in order to optimize the use of CP in pest management, we need not only the confirmation of the effectiveness of the plant VOCs tested but also a greater understanding of the mechanisms involved. 3 For this purpose, it is necessary to understand how CP acts and several hypotheses have been proposed for the mode of action of their volatiles towards aphids. By the emission of VOCs, CPs may disrupt aphid behavior directly through repellent activities.…”

Section: Introductionmentioning

confidence: 99%

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Repellence of Myzus persicae (Sulzer): evidence of two modes of action of volatiles from selected living aromatic plants

Dardouri

Gautier

Issa

et al. 2019

Pest Management Science

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BACKGROUND Intercropping companion plants (CPs) with horticultural crops could be an eco‐friendly strategy to optimize pest management. In this research, volatile organic compounds (VOCs) emitted by some CPs were investigated for their repellent properties towards the green peach aphid (Myzus persicae Sulzer). The aim of this study was to understand the modes of action involved: direct effects on the aphid and/or indirect effects via the host plant (pepper, Capsicum annuum L.). RESULTS We identified two promising repellent CP species: the volatile blend from basil (Ocimum basilicum, direct repellent effect) and the mixture of (or previously intercropped) C. annuum plants with Tagetes patula cv. Nana (indirect effect). This effect was cultivar‐dependent and linked to the volatile bouquet. For the 16 compounds present in the O. basilicum or T. patula bouquets tested individually, (E)‐β‐farnesene, and eugenol reported good repellent properties against M. persicae. Other compounds were repellent at medium and/or highest concentrations. Thus, the presence of repellent VOCs in a mixture does not mean that it has a repellent propriety. CONCLUSION We identified two promising repellent CP species towards M. persicae, with a likely effect of one CP's VOCs on the host plant repellency and highlighted the specific effectiveness of VOC blends. © 2018 Society of Chemical Industry

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“…The mint VOCs should work synergistically for pest management, owing to not only volatile cues that boost anti‐herbivore activity in eavesdropping plants but also to their multi‐functions in the ecological system: for instance, repelling insect herbivores (Kumar et al ., ) and attracting herbivore enemies (Song et al ., ; Tang et al ., ), as described above. Microclimate and other factors may also be involved in pest management (Arimura et al ., ).…”

Section: Discussionmentioning

confidence: 99%

Pest management using mint volatiles to elicit resistance in soy: mechanism and application potential

et al. 2018

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Plants can eavesdrop on volatile cues emitted from neighboring plants to boost their defense responses. When 10 categories of mints were tested for their effects on Glycine max (soybean) plants cultivated nearby, candy mint (Mentha × piperita cv. Candy) and peppermint (Mentha × piperita L.) induced the strongest enhancement in RNA levels of defense genes in the soybean leaves. The mechanism by which the mint volatiles enhanced these transcript levels was based on histone acetylation within the promoter regions of defense genes. These increases in transcript levels were induced when receiver plants were cultivated near to candy mint, but the priming of the defense responses was instead induced when receiver plants were cultivated at mid-length intervals. Field assays revealed that anti-herbivore ability of soy was strengthened both by co-cultivation and by pre-incubation of receiver plants with candy mint. The same held true for another receiver, Brassica rapa, when the receiver was co-cultivated or pre-incubated with peppermint. Exposure to mint volatiles resulted in lower damage to receiver plants, although ecological effects on the herbivores and predators probably also contributed. Together, our findings indicate that pest management systems relying on mint as companion plants might be commercially useful for reducing herbivore damage in crops.

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Repellent and attractive effects of herbs on insects in pear orchards intercropped with aromatic plants

Cited by 46 publications

References 39 publications

Utilizing associational resistance for biocontrol: impacted by temperature, supported by indirect defence

Utilizing associational resistance for biocontrol: impacted by temperature, supported by indirect defence

Repellence of Myzus persicae (Sulzer): evidence of two modes of action of volatiles from selected living aromatic plants

Pest management using mint volatiles to elicit resistance in soy: mechanism and application potential

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