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Qian Q, Guo X, Wu L, Cui J, Gao H, Yang Y, Xu H, Lu Z, Zhu P. Molecular Characterization of Plant Volatile Compound Interactions with Cnaphalocrocis medinalis Odorant-Binding Proteins. PLANTS (BASEL, SWITZERLAND) 2024; 13:479. [PMID: 38498446 PMCID: PMC10892019 DOI: 10.3390/plants13040479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2023] [Revised: 01/30/2024] [Accepted: 02/04/2024] [Indexed: 03/20/2024]
Abstract
Odorant-binding proteins (OBPs) play important roles in the insect olfactory system since they bind external odor molecules to trigger insect olfactory responses. Previous studies have identified some plant-derived volatiles that attract the pervasive insect pest Cnaphalocrocis medinalis (Lepidoptera: Pyralidae), such as phenylacetaldehyde, benzyl acetate, 1-heptanol, and hexanal. To characterize the roles of CmedOBPs in the recognition of these four volatiles, we analyzed the binding abilities of selected CmedOBPs to each of the four compounds, as well as the expression patterns of CmedOBPs in different developmental stages of C. medinalis adult. Antennaes of C. medinalis adults were sensitive to the studied plant volatile combinations. Expression levels of multiple CmedOBPs were significantly increased in the antennae of 2-day-old adults after exposure to volatiles. CmedOBP1, CmedOBP6, CmedPBP1, CmedPBP2, and CmedGOBP2 were significantly up-regulated in the antennae of volatile-stimulated female and male adults when compared to untreated controls. Fluorescence competition assays confirmed that CmedOBP1 could strongly bind 1-heptanol, hexanal, and phenylacetaldehyde; CmedOBP15 strongly bound benzyl acetate and phenylacetaldehyde; and CmedOBP26 could weakly bind 1-heptanol. This study lays a theoretical foundation for further analysis of the mechanisms by which plant volatiles can attract C. medinalis. It also provides a technical basis for the future development of efficient plant volatile attractants of C. medinalis.
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Affiliation(s)
- Qi Qian
- College of Life Sciences, Zhejiang Normal University, Jinhua 321004, China; (Q.Q.); (X.G.); (L.W.); (J.C.); (H.G.); (Z.L.)
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agriculture Sciences, Hangzhou 310021, China;
| | - Xin Guo
- College of Life Sciences, Zhejiang Normal University, Jinhua 321004, China; (Q.Q.); (X.G.); (L.W.); (J.C.); (H.G.); (Z.L.)
| | - Lingjie Wu
- College of Life Sciences, Zhejiang Normal University, Jinhua 321004, China; (Q.Q.); (X.G.); (L.W.); (J.C.); (H.G.); (Z.L.)
| | - Jiarong Cui
- College of Life Sciences, Zhejiang Normal University, Jinhua 321004, China; (Q.Q.); (X.G.); (L.W.); (J.C.); (H.G.); (Z.L.)
| | - Huiying Gao
- College of Life Sciences, Zhejiang Normal University, Jinhua 321004, China; (Q.Q.); (X.G.); (L.W.); (J.C.); (H.G.); (Z.L.)
| | - Yajun Yang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agriculture Sciences, Hangzhou 310021, China;
| | - Hongxing Xu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agriculture Sciences, Hangzhou 310021, China;
| | - Zhongxian Lu
- College of Life Sciences, Zhejiang Normal University, Jinhua 321004, China; (Q.Q.); (X.G.); (L.W.); (J.C.); (H.G.); (Z.L.)
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agriculture Sciences, Hangzhou 310021, China;
| | - Pingyang Zhu
- College of Life Sciences, Zhejiang Normal University, Jinhua 321004, China; (Q.Q.); (X.G.); (L.W.); (J.C.); (H.G.); (Z.L.)
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Yin NN, Yao YJ, Liang YL, Wang ZQ, Li YH, Liu NY. Functional characterization of four antenna-biased chemosensory proteins in Dioryctria abietella reveals a broadly tuned olfactory DabiCSP1 and its key residues in ligand-binding. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2023; 197:105678. [PMID: 38072535 DOI: 10.1016/j.pestbp.2023.105678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 09/30/2023] [Accepted: 10/23/2023] [Indexed: 12/18/2023]
Abstract
The orientation of the oligophagous cone-feeding moth Dioryctria abietella (Lepidoptera: Pyralidae) to host plants primarily relies on olfactory-related proteins, particularly those candidates highly expressed in antennae. Here, through a combination of expression profile, ligand-binding assay, molecular docking and site-directed mutagenesis strategies, we characterized the chemosensory protein (CSP) gene family in D. abietella. Quantitative real-time PCR (qPCR) analyses revealed the detectable expression of all 22 DabiCSPs in the antennae, of which seven genes were significantly enriched in this tissue. In addition, the majority of the genes (19/22 relatives) had the expression in at least one reproductive tissue. In the interactions of four antenna-dominant DabiCSPs and different chemical classes, DabiCSP1 was broadly tuned to 27 plant-derived odors, three man-made insecticides and one herbicide with high affinities (Ki < 6.60 μM). By contrast, three other DabiCSPs (DabiCSP4, CSP6 and CSP17) exhibited a narrow odor binding spectrum, in response to six compounds for each protein. Our mutation analyses combined with molecular docking simulations and binding assays further identified four key residues (Tyr25, Thr26, Ile65 and Val69) in the interactions of DabiCSP1 and ligands, of which binding abilities of this protein to 12, 15, 16 and three compounds were significantly decreased compared to the wildtype protein, respectively. Our study reveals different odor binding spectra of four DabiCSPs enriched in antennae and identifies key residues responsible for the binding of DabiCSP1 and potentially active compounds for the control of this pest.
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Affiliation(s)
- Ning-Na Yin
- Key Laboratory of Forest Disaster Warning and Control of Yunnan Province, Southwest Forestry University, Kunming 650224, China
| | - Yu-Juan Yao
- Key Laboratory of Forest Disaster Warning and Control of Yunnan Province, Southwest Forestry University, Kunming 650224, China
| | - Yin-Lan Liang
- Key Laboratory of Forest Disaster Warning and Control of Yunnan Province, Southwest Forestry University, Kunming 650224, China
| | - Zheng-Quan Wang
- Key Laboratory of Forest Disaster Warning and Control of Yunnan Province, Southwest Forestry University, Kunming 650224, China
| | - Yong-He Li
- College of Plant Protection, Yunnan Agricultural University, Kunming 650201, China
| | - Nai-Yong Liu
- Key Laboratory of Forest Disaster Warning and Control of Yunnan Province, Southwest Forestry University, Kunming 650224, China.
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Zhang X, Wang X, Zhao S, Fang K, Wang Z, Liu J, Xi J, Wang S, Zhang J. Response of Odorant Receptors with Phenylacetaldehyde and the Effects on the Behavior of the Rice Water Weevil ( Lissorhoptrus oryzophilus). JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:6541-6551. [PMID: 37058441 DOI: 10.1021/acs.jafc.2c07963] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
The rice water weevil (RWW), Lissorhoptrus oryzophilus Kuschel (Coleoptera: Curculionidae), is a destructive rice pest that threatens the rice industry worldwide. Odorant receptors (ORs) and odorant receptor coreceptors (Orcos) play an important role in the process of insects' whole life activities; however, there are no related functional studies on RWW. On this basis, a heterologous study of LoryOR20/LoryOrco in Xenopus laevis oocytes was performed to detect the effects of certain natural compounds on RWWs and four active compounds were found. Electroantennogram (EAG) recordings and a behavior test showed that RWWs exhibited a significant response to phenylacetaldehyde (PAA) and an EAG measurement of dsRNA-LoryOR20-treated RWWs revealed a significant decrease in response to PAA. Our results revealed an olfactory molecular mechanism for the recognition of PAA by RWWs, thus providing a potential genetic target at the peripheral olfactory sensing level, contributing to the development of novel control strategies for pest management.
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Affiliation(s)
- Xinxin Zhang
- College of Plant Science, Jilin University, Changchun 130062, PR China
- College of Plant Protection, Northeast Agricultural University, Harbin 150030, PR China
| | - Xiao Wang
- College of Plant Science, Jilin University, Changchun 130062, PR China
| | - Shiwen Zhao
- College of Plant Science, Jilin University, Changchun 130062, PR China
| | - Kui Fang
- College of Plant Science, Jilin University, Changchun 130062, PR China
- Technical Center of Kunming Customs, Kunming 650228, PR China
| | - Zhun Wang
- Changchun Customs Technology Center, Changchun 130062, PR China
| | - Jianan Liu
- College of Plant Science, Jilin University, Changchun 130062, PR China
| | - Jinghui Xi
- College of Plant Science, Jilin University, Changchun 130062, PR China
| | - Shang Wang
- College of Plant Science, Jilin University, Changchun 130062, PR China
| | - Juhong Zhang
- College of Plant Science, Jilin University, Changchun 130062, PR China
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Guo YR, Yin NN, Wu C, Yang ZX, Wang ZQ, Liu NY. Expression profile and functional characterization of odorant binding proteins in a forest pest, Dioryctria abietella (Lepidoptera: Pyralidae). Comp Biochem Physiol B Biochem Mol Biol 2023; 266:110835. [PMID: 36801252 DOI: 10.1016/j.cbpb.2023.110835] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 02/09/2023] [Accepted: 02/10/2023] [Indexed: 02/17/2023]
Abstract
In the forest ecosystem dominated by the Pinaceae plants, this boring pest Dioryctria abietella is subject to a variety of odorants derived from host and nonhost plants, in which olfactory-related proteins enriched in antennae are key behavioral modulators for the orientation of feeding and ovipositing hosts. Here, we addressed the odorant binding protein (OBP) gene family in D. abietella. Expression profiles revealed that the majority of OBPs were abundantly expressed in the antennae at a female-biased level. A male-antenna-biased DabiPBP1 was a strong candidate for detecting type I and type II pheromones of D. abitella female moths. Using a prokaryotic expression system combined with affinity chromatography, we harvested two antenna-dominant DabiOBPs. In the ligand-binding assays, the two DabiOBPs exhibited different odorant response spectra, as DabiOBP17 was tuned to most odorants with higher affinities compared to DabiOBP4. Of these, DabiOBP4 could strongly bind syringaldehyde and citral (dissociation constants (Ki) < 14 μM). A floral volatile, benzyl benzoate (Ki = 4.72 ± 0.20 μM), was the best ligand for DabiOBP17. Remarkably, several green leaf volatiles were found to strongly interact with DabiOBP17 (Ki < 8.5 μM), including Z3-hexenyl acetate, E2-hexenol, Z2-hexenal and E2-hexenal that may mediate a repellent response to D. abietella. Structural analyses of ligands revealed that the binding of the two DabiOBPs to odorants was associated with carbon-chain lengths and functional groups. Molecular simulations identified several key residues involved in the interactions of DabiOBPs and ligands, suggesting specific binding mechanisms. This study highlights olfactory roles of two antennal DabiOBPs in D. abietella, helping the identification of potentially behavioral compounds for the population control of this pest.
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Affiliation(s)
- Yu-Ruo Guo
- Key Laboratory of Forest Disaster Warning and Control of Yunnan Province, Southwest Forestry University, Kunming 650224, China
| | - Ning-Na Yin
- Key Laboratory of Forest Disaster Warning and Control of Yunnan Province, Southwest Forestry University, Kunming 650224, China
| | - Chun Wu
- Key Laboratory of Forest Disaster Warning and Control of Yunnan Province, Southwest Forestry University, Kunming 650224, China
| | - Zi-Xuan Yang
- Key Laboratory of Forest Disaster Warning and Control of Yunnan Province, Southwest Forestry University, Kunming 650224, China
| | - Zheng-Quan Wang
- Key Laboratory of Forest Disaster Warning and Control of Yunnan Province, Southwest Forestry University, Kunming 650224, China
| | - Nai-Yong Liu
- Key Laboratory of Forest Disaster Warning and Control of Yunnan Province, Southwest Forestry University, Kunming 650224, China.
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Characterizations of botanical attractant of Halyomorpha halys and selection of relevant deorphanization candidates via computational approach. Sci Rep 2022; 12:4170. [PMID: 35264639 PMCID: PMC8907264 DOI: 10.1038/s41598-022-07840-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Accepted: 01/27/2022] [Indexed: 12/13/2022] Open
Abstract
Halyomorpha halys has been recognized as a global cross-border pest species. Along with well-established pheromone trapping approaches, there have been many attempts to utilize botanical odorant baits for field monitoring. Due to sensitivity, ecological friendliness, and cost-effectiveness for large-scale implementation, the selection of botanical volatiles as luring ingredients and/or synergists for H. halys is needed. In the current work, botanical volatiles were tested by olfactometer and electrophysiological tests. Results showed that linalool oxide was a potential candidate for application as a behavioral modifying chemical. It drove remarkable attractiveness toward H. halys adults in Y-tube assays, as well as eliciting robust electroantennographic responsiveness towards antennae. A computational pipeline was carried out to screen olfactory proteins related to the reception of linalool oxide. Simulated docking activities of four H. halys odorant receptors and two odorant binding proteins to linalool oxide and nerolidol were performed. Results showed that all tested olfactory genes were likely to be involved in plant volatile-sensing pathways, and they tuned broadly to tested components. The current work provides insights into the later development of field demonstration strategies using linalool oxide and its molecular targets.
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Noushini S, Park SJ, Perez J, Holgate D, Mendez V, Jamie IM, Jamie JF, Taylor PW. Electrophysiological Responses of Bactrocera kraussi (Hardy) (Tephritidae) to Rectal Gland Secretions and Headspace Volatiles Emitted by Conspecific Males and Females. Molecules 2021; 26:molecules26165024. [PMID: 34443611 PMCID: PMC8399695 DOI: 10.3390/molecules26165024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 08/09/2021] [Accepted: 08/16/2021] [Indexed: 11/16/2022] Open
Abstract
Pheromones are biologically important in fruit fly mating systems, and also have potential applications as attractants or mating disrupters for pest management. Bactrocera kraussi (Hardy) (Diptera: Tephritidae) is a polyphagous pest fruit fly for which the chemical profile of rectal glands is available for males but not for females. There have been no studies of the volatile emissions of either sex or of electrophysiological responses to these compounds. The present study (i) establishes the chemical profiles of rectal gland contents and volatiles emitted by both sexes of B. kraussi by gas chromatography–mass spectrometry (GC–MS) and (ii) evaluates the detection of the identified compounds by gas chromatography–electroantennogram detection (GC–EAD) and –electropalpogram detection (GC–EPD). Sixteen compounds are identified in the rectal glands of male B. kraussi and 29 compounds are identified in the rectal glands of females. Of these compounds, 5 were detected in the headspace of males and 13 were detected in the headspace of females. GC–EPD assays recorded strong signals in both sexes against (E,E)-2,8-dimethyl-1,7-dioxaspiro[5.5]undecane, 2-ethyl-7-mehtyl-1,6-dioxaspiro[4.5]decane isomer 2, (E,Z)/(Z,E)-2,8-dimethyl-1,7-dioxaspiro[5.5]undecane, and (Z,Z)-2,8-dimethyl-1,7-dioxaspiro[5.5]undecane. Male antennae responded to (E,E)-2,8-dimethyl-1,7-dioxaspiro[5.5]undecane, 2-methyl-6-pentyl-3,4-dihydro-2H-pyran, 6-hexyl-2-methyl-3,4-dihydro-2H-pyran, 6-oxononan-1-ol, ethyl dodecanoate, ethyl tetradecanoate and ethyl (Z)-hexadec-9-enoate, whereas female antennae responded to (E,E)-2,8-dimethyl-1,7-dioxaspiro[5.5]undecane and 2-methyl-6-pentyl-3,4-dihydro-2H-pyran only. These compounds are candidates as pheromones mediating sexual interactions in B. kraussi.
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Affiliation(s)
- Sally Noushini
- Department of Molecular Sciences, Macquarie University, Sydney, NSW 2109, Australia; (D.H.); (I.M.J.); (J.F.J.)
- Australian Research Council Industrial Transformation Training Centre for Fruit Fly Biosecurity Innovation, Macquarie University, Sydney, NSW 2109, Australia; (S.J.P.); (J.P.); (V.M.); (P.W.T.)
- Correspondence:
| | - Soo Jean Park
- Australian Research Council Industrial Transformation Training Centre for Fruit Fly Biosecurity Innovation, Macquarie University, Sydney, NSW 2109, Australia; (S.J.P.); (J.P.); (V.M.); (P.W.T.)
- Applied BioSciences, Macquarie University, Sydney, NSW 2109, Australia
| | - Jeanneth Perez
- Australian Research Council Industrial Transformation Training Centre for Fruit Fly Biosecurity Innovation, Macquarie University, Sydney, NSW 2109, Australia; (S.J.P.); (J.P.); (V.M.); (P.W.T.)
- Applied BioSciences, Macquarie University, Sydney, NSW 2109, Australia
| | - Danielle Holgate
- Department of Molecular Sciences, Macquarie University, Sydney, NSW 2109, Australia; (D.H.); (I.M.J.); (J.F.J.)
| | - Vivian Mendez
- Australian Research Council Industrial Transformation Training Centre for Fruit Fly Biosecurity Innovation, Macquarie University, Sydney, NSW 2109, Australia; (S.J.P.); (J.P.); (V.M.); (P.W.T.)
- Applied BioSciences, Macquarie University, Sydney, NSW 2109, Australia
| | - Ian M. Jamie
- Department of Molecular Sciences, Macquarie University, Sydney, NSW 2109, Australia; (D.H.); (I.M.J.); (J.F.J.)
| | - Joanne F. Jamie
- Department of Molecular Sciences, Macquarie University, Sydney, NSW 2109, Australia; (D.H.); (I.M.J.); (J.F.J.)
| | - Phillip W. Taylor
- Australian Research Council Industrial Transformation Training Centre for Fruit Fly Biosecurity Innovation, Macquarie University, Sydney, NSW 2109, Australia; (S.J.P.); (J.P.); (V.M.); (P.W.T.)
- Applied BioSciences, Macquarie University, Sydney, NSW 2109, Australia
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Odour Cues from Fruit Arils of Artocarpus heterophyllus Attract both Sexes of Oriental Fruit Flies. J Chem Ecol 2021; 47:552-563. [PMID: 33844147 DOI: 10.1007/s10886-021-01269-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 02/26/2021] [Accepted: 03/23/2021] [Indexed: 10/21/2022]
Abstract
The Oriental fruit fly, Bactrocera dorsalis (Hendel) is an economically devastating pest of fruit crops across the globe with stringent quarantine restrictions to limit its further spread. The current management programs increasingly depend on male annihilation but trapping female flies is equally important to reduce fruit damage. Considering the importance of kairomones in courtship and oviposition site selection behavior of B. dorsalis, the aim of this work was to isolate and identify potential cues from the volatiles of arils of jackfruit, Artocarpus heterophyllus. Using olfactometer assays and gas-chromatography linked to electroantennographic detection, attraction of both female and male B. dorsalis to specific jackfruit volatiles was demonstrated. Ethyl 3-methylbutanoate, ethyl hexanoate, pentyl butanote, 2-methylbutyl 3-methylbutanoate, 2-methylpropyl hexanoate, (Z)-3-hexenyl 3-methylbutanoate and dodecanal were found to attract female B. dorsalis specifically. Butyl acetate, 2 phenylethanol and pentyl 3-methylbutanoate elicited attraction in male B. dorsalis only. Synthetic blends of these compounds were found to attract female and male B. dorsalis in laboratory as well as field conditions. Using specific cues common to each set, a blend of methyl 3-methylbutanoate, butyl acetate, 3-methylbutyl acetate and hexyl acetate attracted both sexes of B dorsalis. This study demonstrates the use of kairomone-based lures for sex-specific as well as bisexual attraction for the first time.
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Rectal gland exudates and emissions of Bactrocera bryoniae: chemical identification, electrophysiological and pheromonal functions. CHEMOECOLOGY 2020. [DOI: 10.1007/s00049-020-00335-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Noushini S, Park SJ, Jamie I, Jamie J, Taylor P. Sampling technique biases in the analysis of fruit fly volatiles: a case study of Queensland fruit fly. Sci Rep 2020; 10:19799. [PMID: 33188282 PMCID: PMC7666149 DOI: 10.1038/s41598-020-76622-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Accepted: 10/26/2020] [Indexed: 11/17/2022] Open
Abstract
Diverse methods have been used to sample insect semiochemicals. Sampling methods can differ in efficiency and affinity and this can introduce significant biases when interpreting biological patterns. We compare common methods used to sample tephritid fruit fly rectal gland volatiles ('pheromones'), focusing on Queensland fruit fly, Bactrocera tryoni. Solvents of different polarity, n-hexane, dichloromethane and ethanol, were compared using intact and crushed glands. Polydimethylsiloxane, polydimethylsiloxane/divinylbenzene and polyacrylate were compared as adsorbents for solid phase microextraction. Tenax-GR and Porapak Q were compared as adsorbents for dynamic headspace sampling. Along with compounds previously reported for B. tryoni, we detected five previously unreported compounds in males, and three in females. Dichloromethane extracted more amides while there was no significant difference between the three solvents in extraction of spiroacetals except for (E,E)-2,8-dimethyl-1,7-dioxaspiro[5.5]undecane for which n-hexane extracted higher amount than both dichloromethane and ethanol. Ethanol failed to contain many of the more volatile compounds. Crushed rectal gland samples provided higher concentrations of extracted compounds than intact rectal gland samples, but no compounds were missed in intact samples. Of solid phase microextraction fibers, polyacrylate had low affinity for spiroacetals, ethyl isobutyrate and ethyl-2-methylbutanoate. Polydimethylsiloxane was more efficient for spiroacetals while type of fiber did not affect the amounts of amides and esters. In dynamic headspace sampling, Porapak was more efficient for ethyl isobutyrate and spiroacetals, while Tenax was more efficient for other esters and amides, and sampling time was a critical factor. Biases that can be introduced by sampling methods are important considerations when collecting and interpreting insect semiochemical profiles.
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Affiliation(s)
- Saeedeh Noushini
- Department of Molecular Sciences, Macquarie University, Sydney, NSW, 2109, Australia.
- Australian Research Council Industrial Transformation Training Centre for Fruit Fly Biosecurity Innovation, Macquarie University, Sydney, NSW, 2109, Australia.
| | - Soo Jean Park
- Applied BioSciences, Macquarie University, Sydney, NSW, 2109, Australia
- Australian Research Council Industrial Transformation Training Centre for Fruit Fly Biosecurity Innovation, Macquarie University, Sydney, NSW, 2109, Australia
| | - Ian Jamie
- Department of Molecular Sciences, Macquarie University, Sydney, NSW, 2109, Australia
- Australian Research Council Industrial Transformation Training Centre for Fruit Fly Biosecurity Innovation, Macquarie University, Sydney, NSW, 2109, Australia
| | - Joanne Jamie
- Department of Molecular Sciences, Macquarie University, Sydney, NSW, 2109, Australia
| | - Phillip Taylor
- Applied BioSciences, Macquarie University, Sydney, NSW, 2109, Australia
- Australian Research Council Industrial Transformation Training Centre for Fruit Fly Biosecurity Innovation, Macquarie University, Sydney, NSW, 2109, Australia
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Attraction and Electrophysiological Response to Identified Rectal Gland Volatiles in Bactrocera frauenfeldi (Schiner). Molecules 2020; 25:molecules25061275. [PMID: 32168881 PMCID: PMC7143976 DOI: 10.3390/molecules25061275] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 03/06/2020] [Accepted: 03/07/2020] [Indexed: 11/17/2022] Open
Abstract
Bactrocera frauenfeldi (Schiner) (Diptera: Tephritidae) is a polyphagous fruit fly pest species that is endemic to Papua New Guinea and has become established in several Pacific Islands and Australia. Despite its economic importance for many crops and the key role of chemical-mediated sexual communication in the reproductive biology of tephritid fruit flies, as well as the potential application of pheromones as attractants, there have been no studies investigating the identity or activity of rectal gland secretions or emission profiles of this species. The present study (1) identifies the chemical profile of volatile compounds produced in rectal glands and released by B. frauenfeldi, (2) investigates which of the volatile compounds elicit an electroantennographic or electropalpographic response, and (3) investigates the potential function of glandular emissions as mate-attracting sex pheromones. Rectal gland extracts and headspace collections from sexually mature males and females of B. frauenfeldi were analysed by gas chromatography-mass spectrometry. Male rectal glands contained (E,E)-2-ethyl-8-methyl-1,7-dioxaspiro [5.5]undecane as a major component and (E,E)-2,8-dimethyl-1,7-dioxaspiro[5.5]undecane as a moderate component. Minor components included palmitoleic acid, palmitic acid, and ethyl oleate. In contrast, female rectal glands contained (E,E)-2,8-dimethyl-1,7-dioxaspiro[5.5]undecane and ethyl laurate as major components, ethyl myristate and ethyl palmitoleate as moderate components, and 18 minor compounds including amides, esters, and spiroacetals. Although fewer compounds were detected from the headspace collections of both males and females than from the gland extractions, most of the abundant chemicals in the rectal gland extracts were also detected in the headspace collections. Gas chromatography coupled electroantennographic detection found responses to (E,E)-2,8-dimethyl-1,7-dioxaspiro[5.5]undecane from the antennae of both male and female B. frauenfeldi. Responses to (E,E)-2-ethyl-8-methyl-1,7-dioxaspiro[5.5]undecane were elicited from the antennae of females but not males. The two spiroacetals also elicited electropalpographic responses from both male and female B. frauenfeldi. Ethyl caprate and methyl laurate, found in female rectal glands, elicited responses in female antennae and palps, respectively. Y-maze bioassays showed that females were attracted to the volatiles from male rectal glands but males were not. Neither males nor females were attracted to the volatiles from female rectal glands. Our findings suggest (E,E)-2,8-dimethyl-1,7-dioxaspiro[5.5]undecane and (E,E)-2-ethyl-8-methyl-1,7-dioxaspiro[5.5]undecane as components of a sex-attracting pheromone in B. frauenfeldi.
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Noushini S, Perez J, Park SJ, Holgate D, Jamie I, Jamie J, Taylor P. Rectal Gland Chemistry, Volatile Emissions, and Antennal Responses of Male and Female Banana Fruit Fly, Bactrocera musae. INSECTS 2019; 11:insects11010032. [PMID: 31906084 PMCID: PMC7022760 DOI: 10.3390/insects11010032] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Revised: 12/24/2019] [Accepted: 12/29/2019] [Indexed: 12/01/2022]
Abstract
The banana fruit fly, Bactrocera musae (Tryon) (Diptera: Tephritidae), is an economically important pest endemic to Australia and mainland Papua New Guinea. The chemistry of its rectal glands, and the volatiles emitted during periods of sexual activity, has not been previously reported. Using gas chromatography–mass spectrometry (GC-MS), we find that male rectal glands contain ethyl butanoate, N-(3-methylbutyl) acetamide, ethyl laurate and ethyl myristate, with ethyl butanoate as the major compound in both rectal gland and headspace volatile emissions. Female rectal glands contain four major compounds, ethyl laurate, ethyl myristate, ethyl palmitate and (E,E)-2,8-dimethyl-1,7-dioxaspiro[5.5]undecane, as well as 11 minor compounds. For both male and female B.musae, all compounds found in the headspace were also present in the rectal gland extracts, suggesting that the rectal gland is the main source of the headspace volatiles. Gas chromatography–electroantennography (GC-EAD) of rectal gland extracts confirms that male antennae respond to male-produced ethyl laurate and female-produced (E,E)-2,8-dimethyl-1,7-dioxaspiro[5.5]undecane, while female antennae respond to male-produced ethyl butanoate but no female-produced compounds. This is an important step in understanding the volatiles involved in the chemical communication of B. musae, their functional significance, and potential application.
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Affiliation(s)
- Saeedeh Noushini
- Department of Molecular Sciences, Macquarie University, Sydney NSW 2109, Australia
- Australian Research Council Industrial Transformation Training Centre for Fruit Fly Biosecurity Innovation, Macquarie University, Sydney NSW 2109, Australia
- Correspondence: or
| | - Jeanneth Perez
- Australian Research Council Industrial Transformation Training Centre for Fruit Fly Biosecurity Innovation, Macquarie University, Sydney NSW 2109, Australia
- Applied BioSciences, Macquarie University, Sydney NSW 2109, Australia
| | - Soo Jean Park
- Australian Research Council Industrial Transformation Training Centre for Fruit Fly Biosecurity Innovation, Macquarie University, Sydney NSW 2109, Australia
- Applied BioSciences, Macquarie University, Sydney NSW 2109, Australia
| | - Danielle Holgate
- Department of Molecular Sciences, Macquarie University, Sydney NSW 2109, Australia
| | - Ian Jamie
- Department of Molecular Sciences, Macquarie University, Sydney NSW 2109, Australia
- Australian Research Council Industrial Transformation Training Centre for Fruit Fly Biosecurity Innovation, Macquarie University, Sydney NSW 2109, Australia
| | - Joanne Jamie
- Department of Molecular Sciences, Macquarie University, Sydney NSW 2109, Australia
| | - Phillip Taylor
- Australian Research Council Industrial Transformation Training Centre for Fruit Fly Biosecurity Innovation, Macquarie University, Sydney NSW 2109, Australia
- Applied BioSciences, Macquarie University, Sydney NSW 2109, Australia
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Nawade B, Yahyaa M, Reuveny H, Shaltiel-Harpaz L, Eisenbach O, Faigenboim A, Bar-Yaakov I, Holland D, Ibdah M. Profiling of volatile terpenes from almond (Prunus dulcis) young fruits and characterization of seven terpene synthase genes. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2019; 287:110187. [PMID: 31481200 DOI: 10.1016/j.plantsci.2019.110187] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2019] [Revised: 07/04/2019] [Accepted: 07/06/2019] [Indexed: 06/10/2023]
Abstract
Almond (Prunus dulcis) is an agricultural and economically important fruit tree from the Rosaceae family used in the food industry. The monoterpenes and sesquiterpenes perform important ecological functions such as insecticidal and antifeedant activities against various insects. The young fruits of the different almond varieties were found to produce considerable amounts of terpene volatiles, including linalool and geraniol. To identify terpene synthases (TPSs) involved in the production of these volatile terpenes, existing genome databases of the Rosaceae were screened for almond genes with significant sequence similarity to other plants TPSs. Bioinformatics analysis led to the identification of seven putative TPSs genes with complete open reading frames. We characterized the enzymes encoded by these seven complementary DNAs: the monoterpene synthases PdTPS1, PdTPS3, PdTPS5, and PdTPS6 belong to the TPS-b clade, which catalyzes the formation of β-phellandrene, geraniol, linalool, and farnesene, respectively. The sesquiterpene synthases PdTPS2 and PdTPS4, which belong to the TPS-a clade mainly catalyze the formation of bergamotene, while another sesquiterpene synthase, PdTPS7, from the TPS-g clade showed nerolidol synthase activity. The qRT-PCR analysis revealed that the various tissues of almond varieties showed differential transcription for all these PdTPSs genes.
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Affiliation(s)
- Bhagwat Nawade
- Newe Yaar Research Center, Agricultural Research Organization, P.O. Box 1021, Ramat Yishay, 30095, Israel
| | - Mosaab Yahyaa
- Newe Yaar Research Center, Agricultural Research Organization, P.O. Box 1021, Ramat Yishay, 30095, Israel
| | - Haim Reuveny
- Migal Galilee Research Institute, P.O. Box 831, Kiryat Shmona, 11016, Israel
| | - Liora Shaltiel-Harpaz
- Migal Galilee Research Institute, P.O. Box 831, Kiryat Shmona, 11016, Israel; Tel Hai college, Upper Galilee, 12210, Israel
| | - Ori Eisenbach
- Newe Yaar Research Center, Agricultural Research Organization, P.O. Box 1021, Ramat Yishay, 30095, Israel
| | - Adi Faigenboim
- Institute of Plant Science, The Volcani Center, ARO, P.O. Box 6, Bet Dagan, 50250, Israel
| | - Irit Bar-Yaakov
- Newe Yaar Research Center, Agricultural Research Organization, P.O. Box 1021, Ramat Yishay, 30095, Israel
| | - Doron Holland
- Newe Yaar Research Center, Agricultural Research Organization, P.O. Box 1021, Ramat Yishay, 30095, Israel
| | - Mwafaq Ibdah
- Newe Yaar Research Center, Agricultural Research Organization, P.O. Box 1021, Ramat Yishay, 30095, Israel.
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Chan HK, Hersperger F, Marachlian E, Smith BH, Locatelli F, Szyszka P, Nowotny T. Odorant mixtures elicit less variable and faster responses than pure odorants. PLoS Comput Biol 2018; 14:e1006536. [PMID: 30532147 PMCID: PMC6287832 DOI: 10.1371/journal.pcbi.1006536] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Accepted: 09/29/2018] [Indexed: 11/18/2022] Open
Abstract
In natural environments, odors are typically mixtures of several different chemical compounds. However, the implications of mixtures for odor processing have not been fully investigated. We have extended a standard olfactory receptor model to mixtures and found through its mathematical analysis that odorant-evoked activity patterns are more stable across concentrations and first-spike latencies of receptor neurons are shorter for mixtures than for pure odorants. Shorter first-spike latencies arise from the nonlinear dependence of binding rate on odorant concentration, commonly described by the Hill coefficient, while the more stable activity patterns result from the competition between different ligands for receptor sites. These results are consistent with observations from numerical simulations and physiological recordings in the olfactory system of insects. Our results suggest that mixtures allow faster and more reliable olfactory coding, which could be one of the reasons why animals often use mixtures in chemical signaling.
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Affiliation(s)
- Ho Ka Chan
- Sussex Neuroscience, School of Engineering and Informatics, University of Sussex, Falmer, Brighton, United Kingdom
| | - Fabian Hersperger
- Department of Neuroscience, University of Konstanz, Konstanz, Germany
| | - Emiliano Marachlian
- Instituto de Fisiología, Biología Molecular y Neurociencias (IFIBYNE-UBA-CONICET) and Departamento de Fisiología, Biología Molecular y Celular, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, Argentina
| | - Brian H. Smith
- School of Life Sciences, Arizona State University, Tempe, Arizona, United States of America
| | - Fernando Locatelli
- Instituto de Fisiología, Biología Molecular y Neurociencias (IFIBYNE-UBA-CONICET) and Departamento de Fisiología, Biología Molecular y Celular, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, Argentina
| | - Paul Szyszka
- Department of Neuroscience, University of Konstanz, Konstanz, Germany
| | - Thomas Nowotny
- Sussex Neuroscience, School of Engineering and Informatics, University of Sussex, Falmer, Brighton, United Kingdom
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Pérez J, Park SJ, Taylor PW. Domestication modifies the volatile emissions produced by male Queensland fruit flies during sexual advertisement. Sci Rep 2018; 8:16503. [PMID: 30405136 PMCID: PMC6220308 DOI: 10.1038/s41598-018-34569-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Accepted: 10/18/2018] [Indexed: 11/20/2022] Open
Abstract
Insects commonly undergo substantial changes during adaptation for laboratory or mass-rearing environments (‘domestication’) that may have significant implications for inferences from laboratory studies and utility for biological control. We assessed the effect of domestication on the amount and blend of volatiles released during sexual calling by laboratory-reared Bactrocera tryoni males using colonies from three regions of Australia: Brisbane, Cairns and Sydney. For each region, volatiles released by males from a young colony (five or fewer generations) and an old colony (20+ generations) during sexual calling was compared. Males from old colonies released more volatiles than males from young colonies. All components of the blend were more abundant in one or more of the older colonies, although differences varied by compound and by region. To assess changes over generations, the young and old colonies obtained from Brisbane were sampled at 5, 12 and 15 generations (young colony) and 25, 35 and 38 generations (old colony). While the old colony remained unchanged, flies from the young colony released more volatiles at each sequential sampling episode, and became increasingly similar to the old colony. Increased volatile production during domestication may be an adaptive response to crowded rearing conditions in which males need to overcome a chemically noisy environment to be sexually successful.
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Affiliation(s)
- Jeanneth Pérez
- Department of Biological Sciences, Macquarie University, Sydney, NSW, 2109, Australia. .,Australian Research Council Industrial Transformation Training Centre for Fruit Fly Biosecurity Innovation, Macquarie University, Sydney, NSW, 2109, Australia.
| | - Soo Jean Park
- Department of Molecular Sciences, Macquarie University, Sydney, NSW, 2109, Australia.,Australian Research Council Industrial Transformation Training Centre for Fruit Fly Biosecurity Innovation, Macquarie University, Sydney, NSW, 2109, Australia
| | - Phillip W Taylor
- Department of Biological Sciences, Macquarie University, Sydney, NSW, 2109, Australia.,Australian Research Council Industrial Transformation Training Centre for Fruit Fly Biosecurity Innovation, Macquarie University, Sydney, NSW, 2109, Australia
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15
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Byers JA, Sadowsky A, Levi Zada A. Index of host habitat preference explored by movement-based simulations and trap captures. J Anim Ecol 2018; 87:1320-1330. [PMID: 29938788 DOI: 10.1111/1365-2656.12877] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Accepted: 06/06/2018] [Indexed: 11/30/2022]
Abstract
Animal species likely have different strengths of host habitat preference (HHP) that might be characterized by a standardized index ranging from 0 (no preference) to 1 (maximum preference). We hypothesized that in some species, HHP may result from individuals dispersing out of the host habitat having a probability of turning back at the boundary, or after entering host habitat by reducing speed or increasing size of turning angles. Computer simulations of individuals moving between various sized patches of host and nonhost habitat were conducted based on these three behaviours hypothesized to affect HHP. In the rebounding model, simulations resulted in equilibria of animal numbers inside and outside of host habitat that depend on sizes of these areas, initial number and the rebounding probability. Curvilinear regression of simulation results suggested an equation that predicted numbers in the host habitat and was solved for rebounding probability. A modified equation that sampled population densities (e.g., insect pheromone trap catches) inside and outside host habitat areas gave the rebounding probability, an index of HHP, without requiring the sizes of the areas. Simulations with traps and moving animals verified that the modified equation could predict the index correctly. The modified equation also estimates an index of HHP from sampled densities due to speed reductions and a combination of this and rebounding. Changes in angular turning size upon entering host habitat, however, did not affect habitat preference. Using pheromone trap captures, we found that the lesser date moth Batrachedra amydraula has a HHP for date Phoenix dactylifera plantations of 0.96. Host habitat preference indexes also were calculated from sampled insect densities reported in the literature. The new index of HHP is useful to characterize habitat patches of many organisms and aid understanding of animal spatial distributions and speciation processes. In addition, the index can be applied in studies of invasive species, trap crops of pest insects and conservation management.
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Affiliation(s)
- John A Byers
- Department of Entomology, Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
| | | | - Anat Levi Zada
- Institute of Plant Protection, Agricultural Research Organization, Volcani Center, Rishon LeZion, Israel
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16
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Miguel S, Hehn A, Bourgaud F. Nepenthes: State of the art of an inspiring plant for biotechnologists. J Biotechnol 2017; 265:109-115. [PMID: 29191666 DOI: 10.1016/j.jbiotec.2017.11.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Revised: 11/04/2017] [Accepted: 11/27/2017] [Indexed: 12/15/2022]
Abstract
Plant carnivory results from the adaptation of plants to their environment. The capture and digestion of preys, followed by their assimilation by the plant is a source of additional nutrients to overcome scarce nutrient in poor soils. Nepenthes are highly studied carnivorous plants and have developed a number of ecological traits which have attracted the attention of plant biologists. Multiple adaptive strategies developed by these plants make them a source of inspiration for many applications ranging from therapeutic treatments to biocontrol solution in agriculture. The outstanding tissue organization of the digestive pitcher can help to create new and original materials usable in everyday life. In this review article, we propose a state of the art of the latest studies carried out on these particular plants and we establish a list of potential tracks for their exploitation.
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Affiliation(s)
- Sissi Miguel
- Plant Advanced Technologies SA, 19 Avenue de la forêt de Haye, F-54500 Vandœuvre-lès-Nancy, France
| | - Alain Hehn
- INRA UMR 1121, Laboratoire Agronomie et Environnement, 2 avenue de la forêt de Haye TSA 40602 54518, Vandœuvre-lès-Nancy, France; Université de Lorraine UMR 1121, Laboratoire Agronomie et Environnement, 2 avenue de la forêt de Haye TSA 40602 54518, Vandœuvre-lès-Nancy, France.
| | - Frédéric Bourgaud
- Plant Advanced Technologies SA, 19 Avenue de la forêt de Haye, F-54500 Vandœuvre-lès-Nancy, France
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17
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Host-plant location by the Guatemalan potato moth Tecia solanivora is assisted by floral volatiles. CHEMOECOLOGY 2017; 27:187-198. [PMID: 28943720 PMCID: PMC5587627 DOI: 10.1007/s00049-017-0244-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Accepted: 08/19/2017] [Indexed: 11/03/2022]
Abstract
Insects locate their host plants using mainly visual and olfactory cues, generally of the exploited plant structure. However, when the resource is difficult to access, it could be beneficial to utilise indirect cues, which indicates the presence of reward (e.g., oviposition site or mate). In the present study, we investigated the host-plant location strategy of the monophagous Guatemalan potato moth Tecia solanivora (Lepidoptera: Gelechiidae). The larva of the moth feed exclusively on potato Solanum spp. (Solanaceae) tubers usually hidden below ground. Using electrophysiological and behavioural tests, we characterised the olfactory cues mediating the attraction of the moth towards their host plant. Odour blends were made to represent different potato structures: tubers, foliage, and flowers. Synthetic blends were created by combining potato-emitted compounds that were antennal active which showed positive dose-response. Attraction to these blends of compounds in relation to the mating status of males and females was tested in dual-choice Y-tube assays. Both males and females, virgin and mated, were attracted to a three-compound blend representing flower odour, while foliage and tuber blends attracted neither sexes. Oviposition bioassays indicated additionally that the floral blend enhances oviposition. We show that potato flower odour might indicate the presence of an oviposition site for the female and possibly an increased mating opportunity for both sexes. Our results provide one of the few examples of the use of floral odour as a reliable indicator of host and probably mating possibility for phytophagous insects exploiting a site spatially separated from the flower.
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18
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Identification of a floral-derived kairomone for currant clearwing, Synanthedon tipuliformis. CHEMOECOLOGY 2016. [DOI: 10.1007/s00049-016-0218-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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19
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Unelius CR, Suckling DM, Brown RL, Jósvai JK, El-Sayed AM. Combining odours isolated from phylogenetically diverse sources yields a better lure for yellow jackets. PEST MANAGEMENT SCIENCE 2016; 72:760-769. [PMID: 26017013 DOI: 10.1002/ps.4050] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2014] [Revised: 05/11/2015] [Accepted: 05/22/2015] [Indexed: 06/04/2023]
Abstract
BACKGROUND Invasive wasps have major impacts on bird populations and other biodiversity in New Zealand beech forests, and new solutions are needed for their management. Baits were combined from four phylogenetically diverse sources (protein and carbohydrate) to improve attraction to a level that could be used as the basis for more powerful attract-and-kill systems. Many compounds from honey, scale insect honeydew, fermenting brown sugar and green-lipped mussels were highly attractive and, when combined, outcompeted known attractants. RESULTS The equivolumetric lure (equal parts of 3-methylbut-1-yl acetate, 2-ethyl-1-butanol, 1-octen-3-ol, 3-octanone, methyl phenylacetate and heptyl butanoate), gave a 5-10-fold improvement over the known attractant, octyl butanoate, and other previously patented lures. An economically optimised lure of the same compounds, but in a ratio of 2:1.6:1:1:2:2.4, was equally attractive as the equal-ratio lure. Pilot mass trapping attempts with this latter lure revealed that >400 wasps trap(-1) day(-1) could be caught at the peak of the season. CONCLUSION The new lures are comprised of compounds from animals, plants and fungi, thus targeting the omnivorous behaviour of these wasps.
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Affiliation(s)
- C Rikard Unelius
- The New Zealand Institute for Plant & Food Research Ltd, Canterbury Agriculture and Science Centre, Christchurch, New Zealand
- School of Natural Sciences, Linnaeus University, Kalmar, Sweden
| | - D Maxwell Suckling
- The New Zealand Institute for Plant & Food Research Ltd, Canterbury Agriculture and Science Centre, Christchurch, New Zealand
- School of Biological Sciences, University of Auckland, Auckland, New Zealand
| | - Robert L Brown
- The New Zealand Institute for Plant & Food Research Ltd, Canterbury Agriculture and Science Centre, Christchurch, New Zealand
- School of Biological Sciences, University of Auckland, Auckland, New Zealand
| | - Julia K Jósvai
- Plant Protection Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Budapest, Hungary
| | - Ashraf M El-Sayed
- The New Zealand Institute for Plant & Food Research Ltd, Canterbury Agriculture and Science Centre, Christchurch, New Zealand
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Tóth P, Undas AK, Verstappen F, Bouwmeester H. Floral Volatiles in Parasitic Plants of the Orobanchaceae. Ecological and Taxonomic Implications. FRONTIERS IN PLANT SCIENCE 2016; 7:312. [PMID: 27014329 PMCID: PMC4791402 DOI: 10.3389/fpls.2016.00312] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2015] [Accepted: 02/29/2016] [Indexed: 05/11/2023]
Abstract
The holoparasitic broomrapes, Orobanche spp. and Phelipanche spp. (Orobanchaceae), are root parasites that completely depend on a host plant for survival and reproduction. There is considerable controversy on the taxonomy of this biologically and agronomically important family. Flowers of over 25 parasitic Orobanchaceae and a number of close, parasitic and non-parasitic, relatives emitted a complex blend of volatile organic compounds (VOCs), consisting of over 130 VOCs per species. Floral VOC blend-based phylogeny supported the known taxonomy in internal taxonomic grouping of genus and eliminated the uncertainty in some taxonomical groups. Moreover, phylogenetic analysis suggested separation of the broomrapes into two main groups parasitizing annual and perennial hosts, and for the annual hosts, into weedy and non-weedy broomrapes. We conclude that floral VOCs are a significant tool in species identification and possibly even in defining new species and can help to improve controversial taxonomy in the Orobanchaceae.
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Affiliation(s)
- Peter Tóth
- Laboratory of Plant Physiology, Wageningen University and Research CentreWageningen, Netherlands
- Department of Plant Protection, Slovak University of Agriculture in NitraNitra, Slovakia
| | - Anna K. Undas
- Laboratory of Plant Physiology, Wageningen University and Research CentreWageningen, Netherlands
- RIKILT, Wageningen University and Research CentreWageningen, Netherlands
| | - Francel Verstappen
- Laboratory of Plant Physiology, Wageningen University and Research CentreWageningen, Netherlands
| | - Harro Bouwmeester
- Laboratory of Plant Physiology, Wageningen University and Research CentreWageningen, Netherlands
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Watanabe H, Yano E, Higashida K, Hasegawa S, Takabayashi J, Ozawa R. An Attractant of the Aphidophagous Gall Midge Aphidoletes aphidimyza From Honeydew of Aphis gossypii. J Chem Ecol 2016; 42:149-55. [DOI: 10.1007/s10886-016-0666-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Revised: 12/13/2015] [Accepted: 12/18/2015] [Indexed: 11/28/2022]
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Suckling DM. Can we replace toxicants, achieve biosecurity, and generate market position with semiochemicals? Front Ecol Evol 2015. [DOI: 10.3389/fevo.2015.00017] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Landolt PJ, Tóth M, Meagher RL, Szarukán I. Interaction of acetic acid and phenylacetaldehyde as attractants for trapping pest species of moths (Lepidoptera: Noctuidae). PEST MANAGEMENT SCIENCE 2013; 69:245-249. [PMID: 22887357 DOI: 10.1002/ps.3381] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2012] [Revised: 06/01/2012] [Accepted: 06/29/2012] [Indexed: 06/01/2023]
Abstract
BACKGROUND Phenylacetaldehyde is a flower volatile and attractant for many nectar-seeking moths. Acetic acid is a microbial fermentation product that is present in insect sweet baits. It is weakly attractive to some moths and other insects, but can be additive or synergistic with other compounds to make more powerful insect lures. RESULTS Acetic acid and phenylacetaldehyde presented together in traps made a stronger lure than either chemical alone for moths of the alfalfa looper Autographa californica (Speyer) and the armyworm Spodoptera albula (Walker). However, this combination of chemicals reduced captures of the cabbage looper moth Trichoplusia ni (Hübner), the silver Y moth Autographa gamma (L.), MacDunnoughia confusa (Stephens) and the soybean looper moth Chrysodeixis includens (Walker) by comparison with phenylacetaldehyde alone. CONCLUSION These results indicate both positive and negative interactions of acetic acid, a sugar fermentation odor cue, and phenylacetaldehyde, a floral scent cue, in eliciting orientation responses of moths. This research provides a new two-component lure for the alfalfa looper A. californica and for the armyworm S. albula for potential use in pest management.
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Affiliation(s)
- Peter J Landolt
- Yakima Agricultural Research Laboratory, USDA-ARS, Wapato, WA 98951, USA.
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Witzgall P, Kirsch P, Cork A. Sex pheromones and their impact on pest management. J Chem Ecol 2010; 36:80-100. [PMID: 20108027 DOI: 10.1007/s10886-009-9737-y] [Citation(s) in RCA: 392] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2009] [Revised: 12/20/2009] [Accepted: 12/28/2009] [Indexed: 11/30/2022]
Abstract
The idea of using species-specific behavior-modifying chemicals for the management of noxious insects in agriculture, horticulture, forestry, stored products, and for insect vectors of diseases has been a driving ambition through five decades of pheromone research. Hundreds of pheromones and other semiochemicals have been discovered that are used to monitor the presence and abundance of insects and to protect plants and animals against insects. The estimated annual production of lures for monitoring and mass trapping is on the order of tens of millions, covering at least 10 million hectares. Insect populations are controlled by air permeation and attract-and-kill techniques on at least 1 million hectares. Here, we review the most important and widespread practical applications. Pheromones are increasingly efficient at low population densities, they do not adversely affect natural enemies, and they can, therefore, bring about a long-term reduction in insect populations that cannot be accomplished with conventional insecticides. A changing climate with higher growing season temperatures and altered rainfall patterns makes control of native and invasive insects an increasingly urgent challenge. Intensified insecticide use will not provide a solution, but pheromones and other semiochemicals instead can be implemented for sustainable area-wide management and will thus improve food security for a growing population. Given the scale of the challenges we face to mitigate the impacts of climate change, the time is right to intensify goal-oriented interdisciplinary research on semiochemicals, involving chemists, entomologists, and plant protection experts, in order to provide the urgently needed, and cost-effective technical solutions for sustainable insect management worldwide.
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Stringer LD, El-Sayed AM, Cole LM, Manning LAM, Suckling DM. Floral attractants for the female soybean looper, Thysanoplusia orichalcea (Lepidoptera: Noctuidae). PEST MANAGEMENT SCIENCE 2008; 64:1218-1221. [PMID: 18615789 DOI: 10.1002/ps.1621] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
BACKGROUND The soybean looper, Thysanoplusia orichalcea (F.), is a polyphagous insect pest of vegetable crops. Indonesian in origin, it has spread to Europe, India, Africa, Australia and New Zealand. The identification of an attractant for female T. orichalcea could enable the development of alternative pest management strategies to those provided by insecticides or sex pheromones, which are often only attractive to males. RESULTS Traps baited with synthetic lures derived from Canada thistle, Cirsium arvense (L.) Scop., floral volatiles attracted female T. orichalcea. Phenylacetaldehyde, a floral compound attractive to many Lepidoptera and present in C. arvense, was tested alone as an attractant for the soybean looper and caught significantly more female than male T. orichalcea. Trap catch was greatest when phenylacetaldehyde was combined with five prevalent volatiles present in C. arvense headspace collections: 2-phenylethyl alcohol, methyl salicylate, dimethyl salicylate, benzaldehyde and benzyl alcohol. Twice as many female moths as males were collected. CONCLUSION Successful trapping of female T. orichalcea in either a lure-and-kill or a mass trapping system may offer an effective way to manage its population size.
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Affiliation(s)
- Lloyd D Stringer
- The Horticulture and Food Research Institute of New Zealand Ltd (HortResearch), Lincoln, New Zealand.
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