Hybrid Sex Pheromones of the Hibiscus Flower-bud Borer, Rehimena surusalis

Honda, Hiroshi; Yamasaki, Ryokuhei; Sumiuchi, Yoko; Uehara, Takuya; Matsuyama, Shigeru; Ando, Tetsu; Naka, Hideshi

doi:10.1007/s10886-015-0638-y

Cited by 12 publications

(6 citation statements)

References 30 publications

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“…Recently, solid-phase GC-Fourier transfer infrared spectrometry (GC-FT/IR) has been utilized for structure determination of sex pheromones, particularly for determination of double-bond configurations (Shibasaki et al, 2013;Zarbin, Fávaro, Vidal, & Rodrigues, 2012). Alternatively, with synthetic pheromone candidates, the doublebond configuration can be determined by the retention times (Rt) in GC-MS analysis (Honda et al, 2015;Yan, Vang, Khanh, Naka, & Ando, 2014). On a capillary GC analysis, the separation of positional isomers of long-chain unsaturated compounds is generally well accomplished by a high-polar column rather than by a low-polar column (Ando et al, 2004).…”

Section: Discussionmentioning

confidence: 99%

Female sex pheromone of Athetis lepigone (Lepidoptera: Noctuidae): Identification and field evaluation

Yan

Zheng

et al. 2017

J Applied Entomology

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Athetis lepigone has been recorded in many countries in Europe and Asia, but it had never been documented as an agricultural pest until 2005. For the purpose of using the sex pheromone to control this pest, we conducted a study to identify the sex pheromone of A. lepigone by gas chromatography with an electroantennographic detector (GC-EAD) and GC coupled with mass spectrometry (GC/MS) analyses. Three pheromone candidates were detected by GC-EAD analysis in the extracts of the female sex pheromone gland, and two candidates were identified as (Z)-7-dodecenyl acetate (Z7-12:OAc) and (Z)-9-tetradecenyl acetate (Z9-14:OAc) in a ratio of 1:5 by mass spectral analysis of natural pheromone components and dimethyl disulphide adducts. In the field male trapping test, the traps baited with the binary blend captured high number of males, while traps with single component hardly caught males, indicating that the two components are essential for the male attractiveness. In addition, the optimum ratios of Z7-12:OAc and Z9-14:OAc were determined as 3:7-7:3, and the best doses for the binary blend (at ratio of 3:7 between Z7-12:OAc and Z9-14:OAc) were 0.25-0.5 mg/trap, based on the number of male catches. The identification of a highly attractive sex pheromone will help in developing efficient strategies for monitoring and control of A. lepigone. K E Y W O R D S(Z)-7-dodecenyl acetate, (Z)-9-tetradecenyl acetate, Athetis lepigone, sex pheromone

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Section: Discussionmentioning

confidence: 99%

Female sex pheromone of Athetis lepigone (Lepidoptera: Noctuidae): Identification and field evaluation

Yan

Zheng

et al. 2017

J Applied Entomology

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“…Synthesizing these observations, we propose a model wherein type I pheromones employ polar moieties for selective receptor interactions, while type II receptors like HarmOR11 adopt more hydrophobic binding sites fitting their non-polar pheromones. These specialized recognition strategies deepen 3Z,6Z,9Z-21:H in Heliothis virescens and Achaea janata [67,68], and 3Z,6Z,9Z-23:H in Rehimena surusalis and Tmetolophota atristriga [18,19]. Despite exhibiting sexual dimorphism in quantities across tissues, these pheromones elicited comparable EAG responses in both sexes.…”

Section: Discussionmentioning

confidence: 99%

“…This phenomenon has been observed in the families of Crambidae [9][10][11][12], Pyralidae [13][14][15], Tortricidae [16], Erebidae [17], and Noctuidae [18], indicating that such combinations may be more widespread than previously thought. Furthermore, in most cases, type I pheromones serve as the major component for long-range attraction, while type II pheromones, despite being the minor component, play a significant role in close-range contact and the facilitation of mating behaviors [10,16,19,20].…”

Section: Introductionmentioning

confidence: 99%

The novel function of an orphan pheromone receptor reveals the sensory specializations of two potential distinct types of sex pheromones in noctuid moth

Wang,

Cao,

Shi

et al. 2024

Cell. Mol. Life Sci.

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Sex pheromones play crucial role in mating behavior of moths, involving intricate recognition mechanisms. While insect chemical biology has extensively studied type I pheromones, type II pheromones remain largely unexplored. This study focused on Helicoverpa armigera, a representative species of noctuid moth, aiming to reassess its sex pheromone composition. Our research unveiled two previously unidentified candidate type II sex pheromones—3Z,6Z,9Z-21:H and 3Z,6Z,9Z-23:H—in H. armigera. Furthermore, we identified HarmOR11 as an orphan pheromone receptor of 3Z,6Z,9Z-21:H. Through AlphaFold2 structural prediction, molecular docking, and molecular dynamics simulations, we elucidated the structural basis and key residues governing the sensory nuances of both type I and type II pheromone receptors, particularly HarmOR11 and HarmOR13. This study not only reveals the presence and recognition of candidate type II pheromones in a noctuid moth, but also establishes a comprehensive structural framework for PRs, contributing to the understanding of connections between evolutionary adaptations and the emergence of new pheromone types.

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“…The main component E10, Z12−16: Ald of the sex pheromone of Rehimena surusalis is important for orientation and approaching of male moths to the odor source, while the secondary component E10, Z12−16: OAc significantly enhances the orientation ability of male moths to the odor source. 50 Another secondary component, Z3, Z6, Z9−23: H, a type II component, can significantly enhance orientation and proximity to the odor source in males. 50 The specific recognition of 1, Z3, Z6−9S, 10R-epoxy-21Hy by H. cunea may be related to the fact that males rely on 1, Z3, Z6−9S, 10R-epoxy-21Hy for close contact and promote mating behavior when finding a mate.…”

Section: ■ Discussionmentioning

confidence: 99%

Functional Characterization of Peripheral Neurons and a Receptor Recognizing Sex Pheromones in Hyphantria cunea (Erebidae)

Di,

Li,

et al. 2024

J. Agric. Food Chem.

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Hyphantria cunea (Lepidoptera: Erebidae) is difficult and costly to control as a quarantine pest found globally. Sex pheromone trapping is an effective measure for its population monitoring and control; however, the peripheral neural mechanism of sex pheromone recognition in H. cunea remains unclear. An electrophysiological analysis showed that both male and female moths of H. cunea responded to four components of sex pheromones and the responses of male moths were stronger than those of the female moths. We identified three types of trichoid sensilla (ST) responsive to sex pheromones using the single sensillum recording technique. Each type was involved in recognizing 9R, 10S-epoxy-1, Z3, Z6-heneicosatriene (1, Z3, Z6–9S, 10R-epoxy-21Hy). Four peripheral neurons involved in the olfactory encoding of sex pheromones were identified. Four candidate pheromone receptor (PR) genes, HcunPR1a, HcunPR1b, HcunPR3, and HcunPR4, were screened by transcriptome sequencing. All of them were highly expressed in the antennae of males, except for HcunPR4, which was highly expressed in the antennae of females. Functional identification showed that HcunPR1a responded to sex pheromone. Other HcunPRs were not functionally identified. In summary, neurons involved in sex pheromone recognition of H. cunea were located in the ST, and HcunPR1a recognized secondary pheromone components 1, Z3, Z6–9S, 10R-epoxy-21Hy. Interestingly, PRs that recognize the main components of the sex pheromone may be located in an unknown branch of the olfactory receptor and merit further study. Our findings provide a better understanding of the peripheral neural coding mechanism of type II sex pheromones, and HcunPR1a may provide a target for the subsequent development of highly effective and specific biopesticides for H. cunea.

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Hybrid Sex Pheromones of the Hibiscus Flower-bud Borer, Rehimena surusalis

Cited by 12 publications

References 30 publications

Female sex pheromone of Athetis lepigone (Lepidoptera: Noctuidae): Identification and field evaluation

Female sex pheromone of Athetis lepigone (Lepidoptera: Noctuidae): Identification and field evaluation

The novel function of an orphan pheromone receptor reveals the sensory specializations of two potential distinct types of sex pheromones in noctuid moth

Functional Characterization of Peripheral Neurons and a Receptor Recognizing Sex Pheromones in Hyphantria cunea (Erebidae)

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