Response of Trichogramma papilionis to semiochemicals induced by host oviposition on plants

Ali, Abdulla N.; Wright, Mark G.

doi:10.1016/j.biocontrol.2020.104510

Cited by 7 publications

(4 citation statements)

References 28 publications

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“… 16 As BTx623 produced more anisole, it might be working as a repellent to stem borers and/or attract their natural enemies. 61 Vice versa , NOG released more linalool, suggesting that linalool might be actually attracting more herbivores to this cultivar. Further studies are necessary to establish the exact roles of VOCs and HIPVs in sorghum interactions with herbivores, which can be later applied to integrated pest management and plant protection.…”

Section: Discussionmentioning

confidence: 88%

Comparative analysis of sorghum (C4) and rice (C3) plant headspace volatiles induced by artificial herbivory

Osinde,

Sobhy,

Wari

et al. 2023

Plant Signaling & Behavior

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Acute stress responses include release of defensive volatiles from herbivore-attacked plants. Here we used two closely related monocot species, rice as a representative C3 plant, and sorghum as a representative C4 plant, and compared their basal and stress-induced headspace volatile organic compounds (VOCs). Although both plants emitted similar types of constitutive and induced VOCs, in agreement with the close phylogenetic relationship of the species, several mono- and sesquiterpenes have been significantly less abundant in headspace of sorghum relative to rice. Furthermore, in spite of generally lower VOC levels, some compounds, such as the green leaf volatile ( Z )-3-hexenyl acetate and homoterpene DMNT, remained relatively high in the sorghum headspace, suggesting that a separate mechanism for dispersal of these compounds may have evolved in this plant. Finally, a variable amount of several VOCs among three sorghum cultivars of different geographical origins suggested that release of VOCs could be used as a valuable resource for the increase of sorghum resistance against herbivores.

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Section: Discussionmentioning

confidence: 88%

Comparative analysis of sorghum (C4) and rice (C3) plant headspace volatiles induced by artificial herbivory

Osinde,

Sobhy,

Wari

et al. 2023

Plant Signaling & Behavior

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“…This is in good agreement to Webster et al [ 54 ], who found that insects usually rely on between 3 to 10 compounds for host plant recognition. Moreover, Ali and Wright [ 55 ] demonstrated in a Y-tube olfactometer that female wasps were significantly attracted to two volatiles among the seven compounds tested. Piesik et al [ 30 ] also found that Cephus cinctus Norton females were attracted to some doses of ( Z )-3-HAC and ( Z )-3-HOL.…”

Section: Discussionmentioning

confidence: 99%

Responses of Adult Hypera rumicis L. to Synthetic Plant Volatile Blends

et al. 2022

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The behavioral responses of Hypera rumicis L. adults to varying blends of synthetic plant volatiles (SPVs) at various concentrations in lieu of single compounds are reported for the first time. For this study, Rumex confertus plants were treated with two blends of SPVs at different quantities that act as either attractants or repellents to insects. Blend 1 (B1) consisted of five green leaf volatiles (GLVs), namely (Z)-3-hexenal, (E)-2-hexenal, (Z)-3-hexenol, (E)-2-hexenol, and (Z)-3-hexen-1-yl acetate. Blend 2 (B2) contained six plant volatiles, namely (Z)-ocimene, linalool, benzyl acetate, methyl salicylate, β-caryophyllene, and (E)-β-farnesene. Each blend was made available in four different amounts of volatiles, corresponding to each compound being added to 50 µL of hexane in amounts of 1, 5, 25 and 125 ng. The effects of the two blends at the different concentrations on the insects were evaluated using a Y-tube olfactometer. Both sexes of the insects were found to be significantly repelled by the highest volatile levels of B1 and by two levels of B2 (25 and 125 ng). Females were also observed to be repelled using B2 with 5 ng of each volatile. Attraction was observed for both sexes only for B1 at the three lower volatile levels (1, 5 and 25 ng). In additional experiments, using only attractants, unmated females were found to be attracted to males, whereas mated females were only attracted to B1. Both unmated and mated males (previously observed in copula) were attracted only to females.

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“…Parasitic wasps play an essential role in maintaining ecological balance, and many of taxa of parasitic wasps have been applied in green pest management. Numerous studies have revealed that the chemical volatiles emitted from their living environment are important cues used by wasps to locate hosts and select oviposition sites [1,2], and their sophisticated olfactory systems are responsible for detecting and recognizing these chemicals. The chemosensory genes expressed in the organs with olfactory functions in wasps are involved in the initial transduction of chemical signals [3], and they mainly include members of three water-soluble protein families (the odorant-binding proteins (OBPs) [4], chemosensory proteins (CSPs) and Niemann-Pick type C2 proteins (NPC2s) families [5]) and four transmembrane protein families (the odorant receptors (ORs) [6], ionotropic receptors (IRs) [7], gustatory receptors (GRs) [8] and sensory neuron membrane proteins (SNMPs) families [9]).…”

Section: Introductionmentioning

confidence: 99%

Transcriptome Analysis and Identification of Chemosensory Genes in Baryscapus dioryctriae (Hymenoptera: Eulophidae)

Zhu

Gan

et al. 2022

Insects

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Baryscapus dioryctriae is a pupal endoparasitoid of many Pyralidae pests and has been used as a biocontrol agent against insect pests that heavily damage the cone and seed of the Korean pine. The olfactory system of wasps plays an essential role in sensing the chemical signals during their foraging, mating, host location, etc., and the chemosensory genes are involved in detecting and transducing these signals. Many chemosensory genes have been identified from the antennae of Hymenoptera; however, there are few reports on the chemosensory genes of Eulophidae wasps. In this study, the transcriptome databases based on ten different tissues of B. dioryctriae were first constructed, and 274 putative chemosensory genes, consisting of 27 OBPs, 9 CSPs, 3 NPC2s, 155 ORs, 49 GRs, 23 IRs and 8 SNMPs genes, were identified based on the transcriptomes and manual annotation. Phylogenetic trees of the chemosensory genes were constructed to investigate the orthologs between B. dioryctriae and other insect species. Additionally, twenty-eight chemosensory genes showed female antennae- and ovipositor-biased expression, which was validated by RT-qPCR. These findings not only built a molecular basis for further research on the processes of chemosensory perception in B. dioryctriae, but also enriched the identification of chemosensory genes from various tissues of Eulophidae wasps.

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Response of Trichogramma papilionis to semiochemicals induced by host oviposition on plants

Cited by 7 publications

References 28 publications

Comparative analysis of sorghum (C4) and rice (C3) plant headspace volatiles induced by artificial herbivory

Comparative analysis of sorghum (C4) and rice (C3) plant headspace volatiles induced by artificial herbivory

Responses of Adult Hypera rumicis L. to Synthetic Plant Volatile Blends

Transcriptome Analysis and Identification of Chemosensory Genes in Baryscapus dioryctriae (Hymenoptera: Eulophidae)

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