1
|
Júnior SV, Gravina ÉG, Moraes MCB, Zaioncz S, Valadares LF, Borges M, Magalhães WLE. Synthesis of an organic-inorganic composite from calcium carbonate and Kraft lignin and its use as carrier material for controlled release of semiochemical agents. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:72670-72682. [PMID: 35614351 DOI: 10.1007/s11356-022-21028-w] [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: 01/19/2022] [Accepted: 05/19/2022] [Indexed: 06/15/2023]
Abstract
The control of pests in agricultural systems is currently based on the widespread use of pesticides that efficiently control pests but have negative effects on the environment and humans. Thus, several studies have been conducted to develop alternative sustainable ways to control pests in agriculture. The use of semiochemicals presents a good alternative to develop a sustainable tool monitoring and control insect pests in crops areas. The dispensing carriers of semiochemicals are typically made of non-degradable material, often petroleum derivatives such as butyl rubber, that become polluting waste after application. To develop a biodegradable and low-cost dispenser for semiochemicals, particles of CaCO3 and a CaCO3/Kraft lignin composite were synthesized using CO2 bubbling, characterized and evaluated for 30 days as a dispenser of the limonene molecule, which is a common semiochemical in plants and also pheromone component is some insect species, such as the lesser mealworm Alphitobius diaperinus. Furthermore, limonene is volatile molecule that is easy to acquire and low-cost, which makes it an ideal semiochemical to evaluate the potential of the CaCO3 particles and CaCO3/Kraft lignin composite as a semiochemical dispenser for use in agriculture. The pure calcium carbonate I, pure calcium carbonate II, and composite I synthesized particles presented a larger specific surface area than the other composites. All the particles evaluated showed a slow limonene release rate between the 5th and 30th days evaluated, indicating the potential of these materials as pheromone dispensers. The composites with higher specific surface area, calcium carbonate II (19.5 m2/g) and composite I (23.1 m2/g), released a higher level of limonene during the 30 days evaluated.
Collapse
Affiliation(s)
- Silvio Vaz Júnior
- Brazilian Agricultural Research Corporation (Embrapa), Parque Estação Biológica - PqEB s/no, CEP 70770-901, Brasília, DF, Brazil.
| | - Érica Gonçalves Gravina
- Brazilian Agricultural Research Corporation (Embrapa), Parque Estação Biológica - PqEB s/no, CEP 70770-901, Brasília, DF, Brazil
| | - Maria Carolina Blassioli Moraes
- Brazilian Agricultural Research Corporation (Embrapa), Parque Estação Biológica - PqEB s/no, CEP 70770-901, Brasília, DF, Brazil
| | - Soraia Zaioncz
- Brazilian Agricultural Research Corporation (Embrapa), Parque Estação Biológica - PqEB s/no, CEP 70770-901, Brasília, DF, Brazil
| | - Leonardo Fonseca Valadares
- Brazilian Agricultural Research Corporation (Embrapa), Parque Estação Biológica - PqEB s/no, CEP 70770-901, Brasília, DF, Brazil
| | - Miguel Borges
- Brazilian Agricultural Research Corporation (Embrapa), Parque Estação Biológica - PqEB s/no, CEP 70770-901, Brasília, DF, Brazil
| | | |
Collapse
|
2
|
Faal H, Meier LR, Canlas IJ, Murman K, Wallace M, Carrillo D, Cooperband MF. Volatiles from male honeydew excretions attract conspecific male spotted lanternflies, Lycorma delicatula (Hemiptera: Fulgoridae). FRONTIERS IN INSECT SCIENCE 2022; 2:982965. [PMID: 38468787 PMCID: PMC10926466 DOI: 10.3389/finsc.2022.982965] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 08/30/2022] [Indexed: 03/13/2024]
Abstract
The spotted lanternfly (SLF), Lycorma delicatula (Hemiptera: Fulgoridae), is a generalist phloem feeder that produces copious amounts of honeydew, which in turn coats the understory. These insects form large aggregations covering the trunks of some trees, while similar trees nearby mysteriously seem unattractive. We investigated whether volatiles from SLF honeydew are attractive to conspecifics by collecting honeydew from the field and testing it for SLF attraction in a two-choice olfactometer. We found that honeydew excreted by adult male SLF was significantly attractive to male SLF, but not female SLF. Although the honeydew excreted by adult female SLF did not significantly attract male or female SLF, both sexes showed a positive trend towards attraction in response to female honeydew in the olfactometer. Analysis of the headspace volatiles of honeydew was conducted, and numerous semiochemicals were identified. Five of which, 2-heptanone, 2-octanone, 2-nonanone, benzyl acetate, and 1-nonanol, were tested in two-choice behavioral assays against a blank control. Benzyl acetate and 2-octanone were attractive to both sexes, whereas 2-heptanone was only attractive to males, and 2-nonanone only to females. The remaining compound, 1-nonanol, repelled females, but not males. Although honeydew has been reported as a source of kairomones for some natural enemies, this may be the first report of sex-specific attractants for conspecific insects found in the honeydew volatiles of a planthopper.
Collapse
Affiliation(s)
- Hajar Faal
- Forest Pest Methods Laboratory, USDA‐APHIS‐PPQ‐S&T, Buzzards Bay, MA, United States
- Tropical Research and Education Center, University of Florida, Homestead, FL, United States
| | - Linnea R. Meier
- Forest Pest Methods Laboratory, USDA‐APHIS‐PPQ‐S&T, Buzzards Bay, MA, United States
- Tropical Research and Education Center, University of Florida, Homestead, FL, United States
| | - Isaiah J. Canlas
- Forest Pest Methods Laboratory, USDA‐APHIS‐PPQ‐S&T, Buzzards Bay, MA, United States
| | - Kelly Murman
- Forest Pest Methods Laboratory, USDA‐APHIS‐PPQ‐S&T, Buzzards Bay, MA, United States
| | - Matthew Wallace
- Biology Department, East Stroudsburg University, East Stroudsburg, PA, United States
| | - Daniel Carrillo
- Tropical Research and Education Center, University of Florida, Homestead, FL, United States
| | - Miriam F. Cooperband
- Forest Pest Methods Laboratory, USDA‐APHIS‐PPQ‐S&T, Buzzards Bay, MA, United States
| |
Collapse
|
3
|
Wilberts L, Vuts J, Caulfield JC, Thomas G, Birkett MA, Herrera-Malaver B, Verstrepen KJ, Sobhy IS, Jacquemyn H, Lievens B. Impact of endophytic colonization by entomopathogenic fungi on the behavior and life history of the tobacco peach aphid Myzus persicae var. nicotianae. PLoS One 2022; 17:e0273791. [PMID: 36067150 PMCID: PMC9447930 DOI: 10.1371/journal.pone.0273791] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Accepted: 08/16/2022] [Indexed: 11/19/2022] Open
Abstract
Entomopathogenic fungi can adopt an endophytic lifestyle and provide protection against insect herbivores and plant pathogens. So far, most studies have focused on Beauveria bassiana to increase plant resistance against abiotic and biotic stresses, while only little is known for other entomopathogenic fungi. In this study, we investigated whether root inoculation of sweet pepper (Capsicum annuum L.) by the entomopathogenic fungi Akanthomyces muscarius ARSEF 5128 and B. bassiana ARSEF 3097 can improve resistance against the tobacco peach aphid Myzus persicae var. nicotianae. First, dual-choice experiments were performed to test the hypothesis that the fungi deter aphids via modifying plant volatile profiles. Next, we tested the hypothesis that endophytic colonization negatively affects aphid life history traits, such as fecundity, development and mortality rate. Aphids were significantly attracted to the odor of plants inoculated with A. muscarius over non-inoculated plants. Plants inoculated with A. muscarius emitted significantly higher amounts of β-pinene than non-inoculated plants, and significantly higher amounts of indole than B. bassiana-inoculated and non-inoculated plants. Inoculation with the fungal strains also caused significantly higher emission of terpinolene. Further, both aphid longevity and fecundity were significantly reduced by 18% and 10%, respectively, when feeding on plants inoculated with A. muscarius, although intrinsic rate of population increase did not differ between inoculated and non-inoculated plants. Sweet pepper plants inoculated with B. bassiana ARSEF 3097 did not elicit a significant behavioral response nor affected the investigated life history traits. We conclude that endophytic colonization by entomopathogenic fungi has the potential to alter olfactory behavior and performance of M. persicae var. nicotianae, but effects are small and depend on the fungal strain used.
Collapse
Affiliation(s)
- Liesbet Wilberts
- Department of Microbial and Molecular Systems (M2S), CMPG Laboratory for Process Microbial Ecology and Bioinspirational Management (PME&BIM), KU Leuven, Leuven, Belgium
- Leuven Plant Institute (LPI), KU Leuven, Leuven, Belgium
| | - József Vuts
- Department of Biointeractions and Crop Protection, Rothamsted Research, Harpenden, United Kingdom
| | - John C. Caulfield
- Department of Biointeractions and Crop Protection, Rothamsted Research, Harpenden, United Kingdom
| | - Gareth Thomas
- Department of Biointeractions and Crop Protection, Rothamsted Research, Harpenden, United Kingdom
| | - Michael A. Birkett
- Department of Biointeractions and Crop Protection, Rothamsted Research, Harpenden, United Kingdom
| | - Beatriz Herrera-Malaver
- Department M2S, CMPG Laboratory of Genetics and Genomics, KU Leuven, Leuven, Belgium
- Flanders Institute for Biotechnology (VIB), KU Leuven Center for Microbiology, Leuven, Belgium
| | - Kevin J. Verstrepen
- Department M2S, CMPG Laboratory of Genetics and Genomics, KU Leuven, Leuven, Belgium
- Flanders Institute for Biotechnology (VIB), KU Leuven Center for Microbiology, Leuven, Belgium
| | - Islam S. Sobhy
- Department of Microbial and Molecular Systems (M2S), CMPG Laboratory for Process Microbial Ecology and Bioinspirational Management (PME&BIM), KU Leuven, Leuven, Belgium
- Faculty of Agriculture, Department of Plant Protection, Suez Canal University, Ismailia, Egypt
| | - Hans Jacquemyn
- Leuven Plant Institute (LPI), KU Leuven, Leuven, Belgium
- Laboratory of Plant Conservation and Population Biology, Biology Department, KU Leuven, Leuven, Belgium
| | - Bart Lievens
- Department of Microbial and Molecular Systems (M2S), CMPG Laboratory for Process Microbial Ecology and Bioinspirational Management (PME&BIM), KU Leuven, Leuven, Belgium
- Leuven Plant Institute (LPI), KU Leuven, Leuven, Belgium
- * E-mail:
| |
Collapse
|
4
|
Calla-Quispe E, Martel C, Ibáñez AJ. Chemical Signals Associated With Gender and Sexual Experience Affect Mating and the Attractiveness of the Poultry Pest, Alphitobius diaperinus (Coleoptera: Tenebrionidae). JOURNAL OF ECONOMIC ENTOMOLOGY 2022; 115:1156-1163. [PMID: 35796144 DOI: 10.1093/jee/toac101] [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: 03/10/2022] [Indexed: 06/15/2023]
Abstract
Alphitobius diaperinus is one of the most significant pests in the poultry industry. Identifying the role of self-produced chemical signals can help control it. Here, we exposed adults to the olfactory signals of other adults of similar and different genders (either males or females) and sexual experiences (i.e., virgin and experienced) to assess their long-range attractiveness and, at short-range, their mating behavior responses (i.e., touching, mounting, and copulation). In olfactometric experiments, our results indicate that adults are attracted to the olfactory signals of other male adults, independently of gender, or sexual condition, indicating the presence of generalized long-range attractive signals, in contrast to female signals, can be both factor-dependent. However, in mating experiments, virgin males developed more robust mating responses (i.e., they mount and copulate longer with females) compared to sexually experienced males, even though they both have similar precopulatory behavioral responses (i.e., time of antennal and leg touching). These results address the importance of short-range chemical signals in eliciting copulation. Furthermore, when virgins of both genders were tested, their mating responses were significantly longer than any other pair combination, indicating that sexual experience also affects mating behavior. Chemical analyses of adult extracts showed that sexual experience, but not gender, is linked to differences in chemical profiles of adults, primarily involved in short-range signaling. These findings provide new insights into the attractiveness and mating responses of A. diaperinus and the role of sexual experience in shaping the behavior and chemical profile of insects that mate multiple times during their lifetime.
Collapse
Affiliation(s)
- Erika Calla-Quispe
- Instituto de Ciencias Ómicas y Biotecnología Aplicada, Pontificia Universidad Católica del Perú, Av. Universitaria, San Miguel, Lima, Peru
| | - Carlos Martel
- Instituto de Ciencias Ómicas y Biotecnología Aplicada, Pontificia Universidad Católica del Perú, Av. Universitaria, San Miguel, Lima, Peru
- Trait Diversity and Function, Royal Botanic Gardens, Kew, Richmond, United Kingdom
| | - Alfredo J Ibáñez
- Instituto de Ciencias Ómicas y Biotecnología Aplicada, Pontificia Universidad Católica del Perú, Av. Universitaria, San Miguel, Lima, Peru
| |
Collapse
|
5
|
Liu Z, Li QX, Song B. Pesticidal Activity and Mode of Action of Monoterpenes. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:4556-4571. [PMID: 35380824 DOI: 10.1021/acs.jafc.2c00635] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Synthetic pesticides are often associated with issues such as pest resistance, persistent residue, nontarget toxicity, and environmental issues. Therefore, the research and development of novel, safe, and effective pesticides has become a focus in pesticide discovery. Monoterpenes are secondary plant metabolites that commonly have multiple action targets and have been used in aromatherapy, alternative medicine, and food industries. Some are highly potent and stereoselective. They can potentially be botanical pesticides and serve as lead candidates for the design and synthesis of new monoterpenoid pesticides for agricultural applications. This article reviews publications and patents found in SciFinder Scholar between 2000 and May 2021 on monoterpenes and mainly focuses on pesticidal activities of frequently studied monoterpenes and their modes of action. The presented information and our views are hopefully useful for the development of monoterpenes as biopesticides and monoterpenoid pesticides.
Collapse
Affiliation(s)
- Zhengjun Liu
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, P. R. China
- College of Chemistry and Chemical Engineering, Anshun University, Anshun, Guizhou 561000, P. R. China
| | - Qing X Li
- Department of Molecular Biosciences and Bioengineering, University of Hawaii at Manoa, Honolulu, Hawaii 96822, United States
| | - Baoan Song
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, P. R. China
| |
Collapse
|
6
|
Montgomery C, Vuts J, Woodcock CM, Withall DM, Birkett MA, Pickett JA, Robert D. Bumblebee electric charge stimulates floral volatile emissions in Petunia integrifolia but not in Antirrhinum majus. THE SCIENCE OF NATURE - NATURWISSENSCHAFTEN 2021; 108:44. [PMID: 34519874 PMCID: PMC8440258 DOI: 10.1007/s00114-021-01740-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 03/19/2021] [Accepted: 06/07/2021] [Indexed: 11/25/2022]
Abstract
The timing of volatile organic compound (VOC) emission by flowering plants often coincides with pollinator foraging activity. Volatile emission is often considered to be paced by environmental variables, such as light intensity, and/or by circadian rhythmicity. The question arises as to what extent pollinators themselves provide information about their presence, in keeping with their long co-evolution with flowering plants. Bumblebees are electrically charged and provide electrical stimulation when visiting plants, as measured via the depolarisation of electric potential in the stem of flowers. Here we test the hypothesis that the electric charge of foraging bumblebees increases the floral volatile emissions of bee pollinated plants. We investigate the change in VOC emissions of two bee-pollinated plants (Petunia integrifolia and Antirrhinum majus) exposed to the electric charge typical of foraging bumblebees. P. integrifolia slightly increases its emissions of a behaviorally and physiologically active compound in response to visits by foraging bumblebees, presenting on average 121 pC of electric charge. We show that for P. integrifolia, strong electrical stimulation (600–700 pC) promotes increased volatile emissions, but this is not found when using weaker electrical charges more representative of flying pollinators (100 pC). Floral volatile emissions of A. majus were not affected by either strong (600–700 pC) or weak electric charges (100 pC). This study opens a new area of research whereby the electrical charge of flying insects may provide information to plants on the presence and phenology of their pollinators. As a form of electroreception, this sensory process would bear adaptive value, enabling plants to better ensure that their attractive chemical messages are released when a potential recipient is present.
Collapse
Affiliation(s)
- Clara Montgomery
- School of Biological Sciences, Life Sciences Building, University of Bristol, 24 Tyndall Avenue, Bristol, BS8 1TQ, UK.
| | - Jozsef Vuts
- Department of Biointeractions and Crop Protection, Rothamsted Research, West Common, Harpenden, AL5 2JQ, UK
| | - Christine M Woodcock
- Department of Biointeractions and Crop Protection, Rothamsted Research, West Common, Harpenden, AL5 2JQ, UK
| | - David M Withall
- Department of Biointeractions and Crop Protection, Rothamsted Research, West Common, Harpenden, AL5 2JQ, UK
| | - Michael A Birkett
- Department of Biointeractions and Crop Protection, Rothamsted Research, West Common, Harpenden, AL5 2JQ, UK
| | - John A Pickett
- School of Chemistry, Cardiff University, Cardiff, CF10 3AT, UK
| | - Daniel Robert
- School of Biological Sciences, Life Sciences Building, University of Bristol, 24 Tyndall Avenue, Bristol, BS8 1TQ, UK
| |
Collapse
|
7
|
Le VD, Dang CH, Nguyen CH, Nguyen HU, Nguyen TD. Synthesis of β-Methyl Alcohols: Influence of Alkyl Chain Length on Diastereoselectivity and New Attractants of Rhynchophorus ferrugineus. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:5882-5886. [PMID: 34028273 DOI: 10.1021/acs.jafc.1c01875] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The diastereoselectivity of adducts in the addition reaction via the Felkin-Anh model is affected significantly by the steric effect of bulky groups. However, the influence of steric alkyl chain length has not been studied for the diastereoselectivity. In this work, we present a new strategy for the racemic synthesis of β-methyl alcohols to obtain various diastereomer ratios using the Felkin-Anh model. The addition of alkyl Grignard reagents to α-methyl aldehydes afforded diastereomer ratios of threo/erythro ≈ 2:1, while the reduction in structurally related ketones using LiAlH4 afforded ratios of threo/erythro ≈ 1:1. The experimental data showed no effect of alkyl chain length on either side on the stereoselectivity of adducts. All synthesized analogues were evaluated for attractiveness to Rhynchophorus ferrugineus weevils in the field. Five novel derivatives, including two alcohols and three ketones, were found to attract weevils in the field trials. Among them, 3-methyldecan-4-one (5b) and 4-methyldecan-5-ol (11a) were found to be the most attractive to the insects.
Collapse
Affiliation(s)
- Van-Dung Le
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 100000, Vietnam
- Institute of Chemical Technology, Vietnam Academy of Science and Technology, 1A, TL29, District 12, Ho Chi Minh City 70000, Vietnam
| | - Chi-Hien Dang
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 100000, Vietnam
- Institute of Chemical Technology, Vietnam Academy of Science and Technology, 1A, TL29, District 12, Ho Chi Minh City 70000, Vietnam
| | - Cong-Hao Nguyen
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 100000, Vietnam
- Institute of Chemical Technology, Vietnam Academy of Science and Technology, 1A, TL29, District 12, Ho Chi Minh City 70000, Vietnam
| | - Hong-Ung Nguyen
- Department of Agriculture and Aquaculture, Tra Vinh University, 126 Nguyen Thien Thanh Street Ward 5, Tra Vinh City 87000, Vietnam
| | - Thanh-Danh Nguyen
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 100000, Vietnam
- Institute of Chemical Technology, Vietnam Academy of Science and Technology, 1A, TL29, District 12, Ho Chi Minh City 70000, Vietnam
| |
Collapse
|
8
|
Identification of Semiochemicals from Cowpea, Vigna unguiculata, for Low-input Management of the Legume Pod Borer, Maruca vitrata. J Chem Ecol 2020; 46:288-298. [PMID: 31953705 PMCID: PMC7142049 DOI: 10.1007/s10886-020-01149-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 01/02/2020] [Accepted: 01/08/2020] [Indexed: 12/26/2022]
Abstract
Cowpea, Vigna unguiculata L. Walp. (Fabaceae), is one of the most important food legumes grown on the African continent, as it provides an affordable source of dietary protein. Yields of cowpea are significantly reduced through damage by legume pod-borer, Maruca vitrata (Lepidoptera: Crambidae), caterpillars to flowers, tender leaves and pods. Semiochemical-based strategies are considered as environmentally benign and affordable for pest management, particularly on smallholder farms. In this study, we investigated the importance of cowpea flower volatiles as host location cues for egg-laying M. vitrata, and herbivore-induced plant volatiles (HIPVs) as M. vitrata repellents and natural enemy (Apanteles taragamae and Phanerotoma syleptae parasitoid) attractants. In oviposition choice assays, M. vitrata laid more eggs on flowering cowpea plants than non-flowering plants. Coupled gas chromatography-electrophysiology (GC-EAG) analysis using the antennae of female M. vitrata and an extract of flower volatiles collected by dynamic headspace collection revealed the presence of five EAG-active components that were identified by coupled GC-mass spectrometry (GC-MS) analysis as benzaldehyde, benzyl alcohol, acetophenone, a vinylbenzaldehyde isomer and (E)-cinnamaldehyde. A synthetic blend of the identified compounds, prepared using 3-vinylbenzaldehyde, induced M. vitrata to lay as many eggs on non-flowering cowpea as on flowering plants. The moths also preferred laying eggs on intact plants compared to M. vitrata-infested plants. As the emission of EAG-active floral compounds was determined to be lower in the headspace of infested cowpea flowers, the role of HIPVs emitted by M. vitrata-damaged leaves was also investigated. Of the compounds induced by larval damage, (E)-DMNT, indole, n-hexyl acetate, 1-octen-3-ol and linalool were shown by GC-EAG to possess electrophysiological activity. A synthetic blend of the EAG-active compounds, using racemic 1-octen-3-ol and linalool, significantly reduced egg numbers on flowering cowpea. Larval and egg parasitoids, i.e. A. taragamae and Ph. syleptae, respectively, of M. vitrata both preferred the Y-tube olfactometer arm treated with synthetic (E)-DMNT, whereas preference for racemic linalool and (E)-nerolidol was dose-dependent in A. taragamae. Our results provide the platform for the development of future semiochemical-based pest management strategies against M. vitrata on smallholder farms in West Africa.
Collapse
|
9
|
Blassioli-Moraes MC, Khrimian A, Michereff MFF, Magalhães DM, Hickel E, de Freitas TFS, Barrigossi JAF, Laumann RA, Silva AT, Guggilapu SD, Silva CC, Sant'Ana J, Borges M. Male-Produced Sex Pheromone of Tibraca limbativentris Revisited: Absolute Configurations of Zingiberenol Stereoisomers and their Influence on Chemotaxis Behavior of Conspecific Females. J Chem Ecol 2019; 46:1-9. [PMID: 31840210 DOI: 10.1007/s10886-019-01125-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 10/19/2019] [Accepted: 11/11/2019] [Indexed: 11/28/2022]
Abstract
The rice stalk stink bug, Tibraca limbativentris, is an important rice pest in Brazil with a high invasive potential for Mexico and the USA. The sex pheromone of this species was previously identified as a combination of two stereoisomers of 1,10-bisaboladien-3-ol (zingiberenol), but the absolute configurations of these sesquiterpenes were not determined, neither were their effect(s) on T. limbativentris behavior evaluated. In this study, using two chiral columns, we compared retention times of the two natural 1,10-bisaboladien-3-ol stereoisomers from air-entrainment samples of male T. limbativentris with those of synthetic stereoisomers of 1,10-bisaboladien-3-ol. The results showed that T. limbativentris males produce (3S,6S,7R)-1,10-bisaboladien-3-ol (1) and (3R,6S,7R)-1,10-bisaboladien-3-ol (5) as their sex pheromone. Two new minor, male-specific components were also identified as cis and trans isomers of 2,10-bisaboladien-1-ol (sesquipiperitol). Y-tube olfactometer bioassays showed that the major (3S,6S,7R) isomer 1 was essential for attraction of T. limbativentris females, but the minor (3R,6S,7R) isomer 2 was not, nor did it show synergistic/antagonistic effects when added to the major isomer. The (1S,6S,7R) and (1R,6S,7R) stereoisomers of sesquipepiritol also attracted T. limbativentris females.
Collapse
Affiliation(s)
- M C Blassioli-Moraes
- Laboratório de Semioquímicos, Embrapa Recursos Genéticos e Biotecnologia, Brasília, DF, 70770-917, Brazil
| | - A Khrimian
- Invasive Insect Biocontrol and Behavior Laboratory, USDA-ARS, NEA, Beltsville, MD, 20705, USA
| | - M F F Michereff
- Laboratório de Semioquímicos, Embrapa Recursos Genéticos e Biotecnologia, Brasília, DF, 70770-917, Brazil
| | - D M Magalhães
- Laboratório de Semioquímicos, Embrapa Recursos Genéticos e Biotecnologia, Brasília, DF, 70770-917, Brazil
| | - E Hickel
- Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina - EPAGRI - Estação Experimental de Itajaí, Rod. Antônio Heil, 6.800 Itaipava, Itajaí, SC, 88318-112, Brazil
| | - T F S de Freitas
- Laboratório de Etologia e Ecologia Química de Insetos, PPG-Fitotecnia, Universidade Federal do Rio Grande do Sul (UFRGS), Av. Bento Gonçalves, 7712, Porto Alegre, RS, 91540-000, Brazil
| | - J A F Barrigossi
- Embrapa Arroz e Feijão, Rodovia GO 462, km 12, Santo Antônio de Goiás, GO, 75375-000, Brazil
| | - R A Laumann
- Laboratório de Semioquímicos, Embrapa Recursos Genéticos e Biotecnologia, Brasília, DF, 70770-917, Brazil
| | - A T Silva
- Laboratório de Semioquímicos, Embrapa Recursos Genéticos e Biotecnologia, Brasília, DF, 70770-917, Brazil.,Faculdade de Agronomia e Medicina Veterinária (FAV), Campus Darcy Ribeiro, Universidade de Brasilia, Brasília, DF, 70910-900, Brazil
| | - S D Guggilapu
- National Institutes of Health, National Institute of Diabetes and Digestive and Kidney Diseases, Laboratory of Bioorganic Chemistry, Bethesda, MD, 20892, USA
| | - C C Silva
- Laboratório de Semioquímicos, Embrapa Recursos Genéticos e Biotecnologia, Brasília, DF, 70770-917, Brazil
| | - J Sant'Ana
- Laboratório de Etologia e Ecologia Química de Insetos, PPG-Fitotecnia, Universidade Federal do Rio Grande do Sul (UFRGS), Av. Bento Gonçalves, 7712, Porto Alegre, RS, 91540-000, Brazil
| | - M Borges
- Laboratório de Semioquímicos, Embrapa Recursos Genéticos e Biotecnologia, Brasília, DF, 70770-917, Brazil.
| |
Collapse
|
10
|
Hassemer MJ, Borges M, Withall DM, Pickett JA, Laumann RA, Birkett MA, Blassioli-Moraes MC. Development of pull and push-pull systems for management of lesser mealworm, Alphitobius diaperinus, in poultry houses using alarm and aggregation pheromones. PEST MANAGEMENT SCIENCE 2019; 75:1107-1114. [PMID: 30270497 DOI: 10.1002/ps.5225] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 09/24/2018] [Accepted: 09/24/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND The lesser mealworm, Alphitobius diaperinus (Coleoptera: Tenebrionidae), is the most important insect pest affecting poultry production around the world, with all life stages being susceptible to infection by bacteria, viruses and fungi. Control of A. diaperinus in poultry houses using intensive insecticide application is not effective due to the cryptic behaviour of this pest. Here, we evaluated the potential of recently identified A. diaperinus alarm (1,4-benzoquinone, 2-methyl-1,4-benzoquinone and 2-ethyl-1,4-benzoquinone) and aggregation [(R)-limonene, 2-nonanone, (E)-ocimene, (S)-linalool, (R)-daucene and (E,E)-α-farnesene] pheromones as tools for the management of this pest in poultry houses in Brazil. RESULTS Laboratory arena assays with synthetic alarm pheromone confirmed A. diaperinus repellency. In an initial field assay, traps baited with synthetic aggregation pheromone captured significantly more insects than control traps. In further field assays that compared a pull (aggregation pheromone) and a push-pull (simultaneous alarm/aggregation pheromone deployment) system, a higher number of A. diaperinus were captured in aggregation pheromone-baited traps in the push-pull system. CONCLUSION Our results suggest that alarm and aggregation pheromones can be deployed in poultry houses to trap significant numbers of adult A. diaperinus. Studies are underway to determine the potential for using these components as part of an integrated A. diaperinus management strategy. © 2018 Society of Chemical Industry.
Collapse
Affiliation(s)
- Marla J Hassemer
- Department of Zoology, Institute of Biological Sciences, University of Brasília, Brasília, Brazil
- Semiochemicals Laboratory, Embrapa Genetics Resources and Biotechnology, Embrapa Genetics Resources and Biotechnology, Brasília, Brazil
| | - Miguel Borges
- Semiochemicals Laboratory, Embrapa Genetics Resources and Biotechnology, Embrapa Genetics Resources and Biotechnology, Brasília, Brazil
| | | | - John A Pickett
- School of Chemistry, Cardif University, Cardif CF10 3AT, UK
| | - Raul A Laumann
- Semiochemicals Laboratory, Embrapa Genetics Resources and Biotechnology, Embrapa Genetics Resources and Biotechnology, Brasília, Brazil
| | | | - Maria C Blassioli-Moraes
- Semiochemicals Laboratory, Embrapa Genetics Resources and Biotechnology, Embrapa Genetics Resources and Biotechnology, Brasília, Brazil
| |
Collapse
|
11
|
Lee YS, Kim YC. Tobacco Growth Promotion by the Entomopathogenic Fungus, Isaria javanica pf185. MYCOBIOLOGY 2019; 47:126-133. [PMID: 31001453 PMCID: PMC6452915 DOI: 10.1080/12298093.2018.1562692] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Revised: 12/12/2018] [Accepted: 12/15/2018] [Indexed: 06/09/2023]
Abstract
Isaria javanica pf185 is an important entomopathogenic fungus with potential for use as an agricultural biocontrol agent. However, the effect of I. javanica pf185 on plant growth is unknown. Enhanced tobacco growth was observed when tobacco roots were exposed to spores, cultures, and fungal cell-free culture supernatants of this fungus. Tobacco seedlings were also exposed to the volatiles of I. javanica pf185 in vitro using I-plates in which the plant and fungus were growing in separate compartments connected only by air space. The length and weight of seedlings, content of leaf chlorophyll, and number of root branches were significantly increased by the fungal volatiles. Heptane, 3-hexanone, 2,4-dimethylhexane, and 2-nonanone were detected, by solid-phase micro-extraction and gas chromatography-mass spectrophotometry, as the key volatile compounds produced by I. javanica pf185. These findings illustrate that I. javanica pf185 can be used to promote plant growth, and also as a biocontrol agent of insect and plant diseases. Further studies are necessary to elucidate the mechanisms by which I. javanica pf185 promotes plant growth.
Collapse
Affiliation(s)
- Yong-Seong Lee
- Department of Applied Biology, College of Agriculture and Life Sciences, Chonnam National University, Gwangju, Republic of Korea
| | - Young Cheol Kim
- Department of Applied Biology, College of Agriculture and Life Sciences, Chonnam National University, Gwangju, Republic of Korea
| |
Collapse
|
12
|
Weeks EN, Machtinger ET, Leemon D, Geden CJ. 12. Biological control of livestock pests: entomopathogens. ECOLOGY AND CONTROL OF VECTOR-BORNE DISEASES 2018. [DOI: 10.3920/978-90-8686-863-6_12] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Emma N.I. Weeks
- University of Florida, Entomology and Nematology Dept., 970 Natural Area Drive, Gainesville, FL 32653, USA
| | - Erika T. Machtinger
- Penn State University, Department of Entomology, 501 ASI Building, University Park, State College, PA 16082, USA
| | - Diana Leemon
- Department of Agriculture and Fisheries (Queensland), Agri-Science Queensland, Ecosciences Precinct, GPO Box 267, Brisbane, Queensland, 4001, Australia
| | - Christopher J. Geden
- United States Department of Agriculture, Agricultural Research Service, Center for Medical, Agricultural and Veterinary Entomology, 1600 SW 23rd Drive, Gainesville, FL 32608, USA
| |
Collapse
|
13
|
Fancelli M, Borges M, Laumann RA, Pickett JA, Birkett MA, Blassioli-Moraes MC. Attractiveness of Host Plant Volatile Extracts to the Asian Citrus Psyllid, Diaphorina citri, is Reduced by Terpenoids from the Non-Host Cashew. J Chem Ecol 2018; 44:397-405. [PMID: 29500752 PMCID: PMC5899996 DOI: 10.1007/s10886-018-0937-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2017] [Revised: 02/01/2018] [Accepted: 02/16/2018] [Indexed: 11/26/2022]
Abstract
Diaphorina citri is a vector of the bacterial causative agent of Huanglongbing (HLB = Citrus greening), a severe disease affecting citrus crops. As there is no known control for HLB, manipulating insect behaviour through deployment of semiochemicals offers a promising opportunity for protecting citrus crops. The behavioural responses of D. citri to plant volatiles, and the identity of these plant volatiles were investigated. Volatiles were collected from host plants Murraya paniculata, Citrus sinensis, C. reshni, C. limettioides, Poncirus trifoliata, and from non-host plants Psidium guajava, Mangifera indica, Anacardium occidentale. In behavioural assays, female D. citri spent more time in the arms containing volatiles from either M. paniculata or C. sinensis compared to the control arms. When D. citri was exposed to volatiles collected from A. occidentale, they preferred the control arm. Volatiles emitted from the other studied plants did not influence the foraging behaviour of D. citri. Chemical analyses of volatile extracts from C. sinensis, M. paniculata, and A. occidentale revealed the presence of the terpenoids (E)-4,8-dimethylnona-1,3,7–triene (DMNT) and (E,E)-4,8,12-trimethyltrideca-1,3,7,11-tetraene (TMTT) in higher amounts in A. occidentale. In further behavioural bioassays, female D. citri spent less time in arms containing a synthetic blend of DMNT and TMTT compared to the control arms. Female D. citri also spent less time in arms containing the synthetic blend in combination with volatile extracts from either M. paniculata or C. sinensis compared to the control arms. Results suggest that higher release of the two terpenoids by A. occidentale make this species unattractive to D. citri, and that the terpenoids could be used in reducing colonisation of citrus plants and therefore HLB infection.
Collapse
Affiliation(s)
- Marilene Fancelli
- Embrapa Cassava and Fruits, PO Box 007, Cruz das Almas, 44380-000, Brazil.
| | - Miguel Borges
- Embrapa Genetic Resources and Biotechnology, Brasília, 70770-917, Brazil
| | - Raul A Laumann
- Embrapa Genetic Resources and Biotechnology, Brasília, 70770-917, Brazil
| | - John A Pickett
- Rothamsted Research, Harpenden, Hertfordshire, AL5 2JQ, UK
| | | | | |
Collapse
|