Repellent Effects of Different Celery Varieties in Bemisia tabaci (Hemiptera: Aleyrodidae) Biotype Q

Tu, Hongtao; Qin, Yuchuan

doi:10.1093/jee/tox110

Cited by 24 publications

(19 citation statements)

References 21 publications

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“…Limonene, a compound known to have insecticidal activities against a number of arthropods [26] including the Silverleaf whitefly ( B . tabaci ) [27–29], was found to be the most abundant volatile released from both flowers (24.01% of volatile output) and leaf tissue (21.04%) of marigold seedlings (S4 Fig).…”

Section: Resultsmentioning

confidence: 99%

Companion planting with French marigolds protects tomato plants from glasshouse whiteflies through the emission of airborne limonene

et al. 2019

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Horticulturalists and gardeners in temperate regions often claim that planting marigolds next to tomato plants protects the tomatoes from the glasshouse whitefly ( Trialeurodes vaporariorum Westwood). If shown to hold true, this technique could be used in larger-scale tomato production, protecting the crop and helping to introduce greater plant diversity into these agro-ecosystems. Here we present two large-scale glasshouse trials corresponding to the two main ways growers are likely to use marigolds to control whiteflies. In the first, marigolds are grown next to tomato throughout the growing period and we quantify whitefly population growth from the seedling stage over a 48 day infestation period. Here we show that association with marigolds significantly slows whitefly population development. Introducing additional whitefly-attractive ‘pull’ plants around the perimeter of plots has little effect, but reducing the proportion of marigolds and introducing other non-hosts of whiteflies (basil, nasturtium and Chinese cabbage) also reduces whitefly populations on tomato. The second experiment assesses the efficacy of marigolds when used as an ‘emergency’ measure. Here we allow whitefly populations to build to a high density on unprotected tomatoes then introduce marigolds and assess whitefly population over a further period. Following laboratory work showing limonene to be a major chemical component of French marigolds and a negative behaviour response of whiteflies to this compound, limonene dispensers are added as an additional treatment to this experiment. “Emergency” marigold companion planting yielded minimal reductions in whitefly performance, but the use of limonene dispensers was more effective. Our work indicates that companion planting short vine tomatoes with French marigolds throughout the growing season will slow development of whitefly populations. Introducing marigolds to unprotected tomatoes after significant whitefly build-up will be less effective. The use of limonene dispensers placed near to tomato plants also shows promise. It is argued that this work supports the possibility of the development of a mixture of tomato companion plants that infer ‘associational resistance’ against many major invertebrate pests of tomato. Such a mixture, if comprising edible or ornamental plants, would be economically viable, would reduce the need for additional chemical and biological control, and, if used outdoors, would generate plant-diverse agro-ecosystems that are better able to harbour invertebrate wildlife.

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Section: Resultsmentioning

confidence: 99%

Companion planting with French marigolds protects tomato plants from glasshouse whiteflies through the emission of airborne limonene

et al. 2019

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“…Overall, whitefly repellents or attractants are evaluated based on the proportion of responding whiteflies in relation to the solvent used or clean air. The degree of the semiochemical effect on whitefly behaviour is also dose‐dependent . The terms repellency and attractancy should be used with caution and always in context.…”

Section: Identification and Evaluation Of Plant‐emitted Whitefly Semimentioning

confidence: 99%

“…The degree of the semiochemical effect on whitefly behaviour is also dose-dependent. 5,6 The terms repellency and attractancy should be used with caution and always in context.…”

Section: Whitefly Electrophysiology Towards Semiochemicalsmentioning

confidence: 99%

“…However, increasing numbers of studies have shown that whitefly behaviour is affected by plant‐emitted volatile organic compounds (VOCs). In behavioural bioassays, whitefly preference varies between potential host plants and even among host plant varieties, cultivars and accessions . Furthermore, whiteflies can discriminate between different qualitative conditions in host plants, for example, differences in nitrogen fertilization, leaf position, aphid colonization and virus infection .…”

Section: Introductionmentioning

confidence: 99%

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Prospects for management of whitefly using plant semiochemicals, compared with related pests

Schlaeger

Pickett

Birkett

2018

Pest Management Science

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Whitefly (Hemiptera: Sternorrhyncha: Aleyrodidae) pests, including the tobacco whitefly, Bemisia tabaci, and the greenhouse whitefly, Trialeurodes vaporariorum, are important economically in agriculture. Whiteflies are controlled mainly by synthetic insecticides but resistance to these is evolving rapidly. A semiochemical‐based management strategy could provide an alternative to the use of insecticides, by exploiting natural volatile signalling processes to manipulate insect behaviour. Whitefly behaviour is affected by differences in plant odour blends. Selected compounds have been suggested as putative semiochemicals, but in only a few studies have potential volatiles been characterized by electrophysiology or olfactometry. Application of antennal preparation methods from closely related families, the aphids (Hemiptera: Aphididae) and psyllids (Hemiptera: Psyllidae), may help to facilitate whitefly electroantennography. Behavioural bioassays are essential to identify the repellent or attractant effect of each semiochemical. The relevance of semiochemicals in whitefly management needs to be evaluated in the respective cultivation system. Although the value of semiochemicals against whiteflies has not been demonstrated in the field, there is an emerging range of possible field applications and some promising prospects. Overall, the olfactory system of whiteflies needs to be elucidated in more detail. © 2018 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

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“…For example, intercropping cucumbers with celery and Malabar spinach (two nonpreferred plants) reduced the numbers of whiteflies of B. tabaci biotypes B and Q (Zhao et al, 2014). Similarly, volatiles from coriander and celery also reduced numbers of whiteflies (biotype B) on tomato plants (Carvalho et al, 2017;Tu and Qin, 2017). To examine whether intercropping with aversive plants could also be used to combat whitefly infestations in cassava plants, we used essential oils from cinnamon, lemongrass, thyme, and patchouli to scent the air surrounding cassava plants leaves and monitored the cassava whiteflies' behavior.…”

Section: Essential Oils Cause An Effective But Unstable Repulsion To Whitefliesmentioning

confidence: 99%

Influence of Olfaction in Host-Selection Behavior of the Cassava Whitefly Bemisia tabaci

et al. 2021

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Cassava is a vital food-security crop in Sub-Saharan Africa. Cassava crops are, however, severely affected by viral diseases transmitted by members of the whitefly species complex Bemisia tabaci. We have here investigated the role of olfaction in host selection behavior of the cassava whitefly B. tabaci SSA-ESA biotype. Surprisingly, we find that the whiteflies appear to make little use of olfaction to find their favored host. The cassava whitely shows a highly reduced olfactory system, both at the morphological and molecular level. Whitefly antennae possess only 15 sensilla with possible olfactory function, and from the genome we identified just a handful of candidate chemoreceptors, including nine tuning odorant receptors, which would afford the whitefly with one of the smallest olfactomes identified from any insect to date. Behavioral experiments with host and non-host plants, as well as with identified specific volatiles from these sources, suggest that the few input channels present are primarily tuned toward the identification of unwanted features, rather than favored ones, a strategy quite unlike most other insects. The demonstrated repellence effect of specific volatile chemicals produced by certain plants unflavored by whiteflies suggests that intercropping with these plants could be a viable strategy to reduce whitefly infestations in cassava fields.

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Repellent Effects of Different Celery Varieties in Bemisia tabaci (Hemiptera: Aleyrodidae) Biotype Q

Cited by 24 publications

References 21 publications

Companion planting with French marigolds protects tomato plants from glasshouse whiteflies through the emission of airborne limonene

Companion planting with French marigolds protects tomato plants from glasshouse whiteflies through the emission of airborne limonene

Prospects for management of whitefly using plant semiochemicals, compared with related pests

Influence of Olfaction in Host-Selection Behavior of the Cassava Whitefly Bemisia tabaci

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