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Orsolini M, Russack J, Huynh H, Raburn D, Fox J, Schust D. In vivo gamete toxicology in the context of in vitro fertilization: a narrative review. F&S REVIEWS 2025; 6:100090. [PMID: 40417415 PMCID: PMC12097544 DOI: 10.1016/j.xfnr.2025.100090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 05/27/2025]
Abstract
IVF as a clinical method to surmount infertility has existed since the 1970s, and yet fertilization, embryo development, pregnancy, and live birth rates remain unacceptably low. Although a multitude of factors may contribute to stagnated success despite substantial advances in basic and applied IVF sciences, gamete quality is inarguably integral to IVF success rates. In this review, the authors will explore the role of environmental toxicology in impairing in vivo fertility and gamete quality prior to starting IVF that will influence downstream IVF success. In vivo contaminants of interest that may affect gamete potential in the context of IVF include heavy metals, per- and polyfluoroalkyl substances (PFAS), persistent organic pollutants (POPs), and airborne contaminants. By evaluating the current literature on reproductive toxicology and how toxic exposures may influence IVF, this review aims to provide a comprehensive reference of potential toxicological exposures for clinicians, to use in vitro and animal data to supplement correlative human studies with potential causative mechanisms, and to strengthen the case for patient assessment of toxicological risk.
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Affiliation(s)
- Morgan Orsolini
- Duke University, Department of Obstetrics and Gynecology, Durham, NC USA
| | | | | | - Douglas Raburn
- Duke University, Department of Obstetrics and Gynecology, Durham, NC USA
| | - John Fox
- Lehigh University, Department of Civil and Environmental Engineering Bethlehem, PA USA
| | - Danny Schust
- Duke University, Department of Obstetrics and Gynecology, Durham, NC USA
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2
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Otto P, Célestin G, Kergunteuil A, Valantin-Morison M, Pashalidou FG. Oviposition-induced plant volatiles prime defences against impending herbivores in neighbouring non-damaged plants. Sci Rep 2025; 15:17461. [PMID: 40394137 DOI: 10.1038/s41598-025-02371-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2024] [Accepted: 05/13/2025] [Indexed: 05/22/2025] Open
Abstract
Plants exploit environmental cues about the risks of encountering insect herbivores, often sensitising defensive responses. While herbivore-induced plant volatiles (HIPVs) are reported to enhance plant defences against incoming herbivores, responses to oviposition-induced plant volatiles (OIPVs) are massively under-explored. We studied whether OIPV emissions from Brassica napus enhance defences in non-damaged neighbouring B. napus when subsequently infested with Pieris brassicae larvae. We collected and analysed the emission rates of plant volatile organic compounds under different treatments and measured P. brassicae larvae biomass as a proxy for defence. We show that oviposition triggers the release of specific volatiles, i.e. α-pinene, dimethyl-trisulfide, and limonene, potentially serving as herbivore early warning cues for neighbouring non-damaged plants. Initially, after three days of herbivory, OIPV-receivers emitted lower levels of volatiles compared to control receivers; however, following seven days of herbivory, both control and OIPV-receivers emitted similar amounts of volatiles. We suggest a potential trade-off between direct and indirect defences, with sensitised plants investing metabolic resources initially towards direct and later enhancing indirect defences. We show that OIPVs mediate plant-plant communication, a natural potential for Brassicaceae crop protection.
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Affiliation(s)
- Pius Otto
- UMR Agronomie, INRAE, AgroParisTech, Université Paris-Saclay, 91123, Palaiseau Cedex, France
| | - Gerlens Célestin
- UMR Agronomie, INRAE, AgroParisTech, Université Paris-Saclay, 91123, Palaiseau Cedex, France
| | - Alan Kergunteuil
- INRAE, LAE, Université de Lorraine, 54000, Nancy, France
- INRAE, PSH, 84000, Avignon, France
| | - Muriel Valantin-Morison
- UMR Agronomie, INRAE, AgroParisTech, Université Paris-Saclay, 91123, Palaiseau Cedex, France
| | - Foteini G Pashalidou
- UMR Agronomie, INRAE, AgroParisTech, Université Paris-Saclay, 91123, Palaiseau Cedex, France.
- UMR ABSys-Agrosystèmes Biodiversifiés (INRAE), Campus Supagro Montpellier 2 Place Viala, 34060, Montpellier Cedex 2, France.
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Zhai D, Lu H, Liu S, Liu J, Zhang W, Wu J, Li J, Bai R, Yan F, Zhao C. Fungal Warriors: Effects of Beauveria bassiana and Purpureocillium lilacinum on CCYV-Carrying Whiteflies. Biomolecules 2025; 15:593. [PMID: 40305369 PMCID: PMC12025157 DOI: 10.3390/biom15040593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2025] [Revised: 04/06/2025] [Accepted: 04/10/2025] [Indexed: 05/02/2025] Open
Abstract
Bemisia tabaci is a major agricultural pest that affects both greenhouse and field crops by feeding on plant sap, which impairs plant growth, and by secreting honeydew, promotes sooty mold growth that further reduces photosynthesis. Additionally, these insects are vectors for viruses such as the cucurbit chlorotic yellows virus (CCYV), which causes significant damage to cucurbit crops. Traditional chemical pesticide treatments have limitations, including the development of resistance, harm to non-target organisms, and environmental contamination. Traditional chemical pesticides have limitations when it comes to controlling plants infested by CCYV and whitefly. However, the underlying reasons for these limitations remain unclear, as does the impact of entomopathogenic fungi on whitefly responses. This study explores the potential of using biological control agents, specifically Beauveria bassiana and Purpureocillium lilacinum, to manage whitefly populations and control CCYV transmission. Laboratory experiments were conducted to evaluate the pathogenicity of these fungi on non/viruliferous whitefly. The results indicated that both fungi effectively reduced whitefly populations, with B. bassiana showing particularly strong adverse effects. Whiteflies infected with CCYV exhibited a higher LC50 to B. bassiana and P. lilacinum. Furthermore, bio-pesticides significantly altered the bacterial microbiome dynamics of the whitefly. Interestingly, CCYV increased the susceptibility of whiteflies to entomopathogenic fungus. The findings suggest that these biocontrol agents offer a sustainable alternative to chemical pesticides. Our study unraveled a new horizon for the multiple interaction theories among bio-pesticides-insects-symbionts-viruses.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Fengming Yan
- Henan International Laboratory for Green Pest Control, Henan Engineering Laboratory of Pest Biological Control, College of Plant Protection, Henan Agricultural University, Zhengzhou 450046, China; (D.Z.); (H.L.); (S.L.); (J.L.); (W.Z.); (J.W.); (J.L.); (R.B.)
| | - Chenchen Zhao
- Henan International Laboratory for Green Pest Control, Henan Engineering Laboratory of Pest Biological Control, College of Plant Protection, Henan Agricultural University, Zhengzhou 450046, China; (D.Z.); (H.L.); (S.L.); (J.L.); (W.Z.); (J.W.); (J.L.); (R.B.)
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4
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Kumar D, Roy S, Babu A, Pandey AK. Harnessing Fungal Bioagents Rich in Volatile Metabolites for Sustainable Crop Protection: A Critical Review. J Basic Microbiol 2025; 65:e70003. [PMID: 40007229 DOI: 10.1002/jobm.70003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2024] [Revised: 12/29/2024] [Accepted: 01/11/2025] [Indexed: 02/27/2025]
Abstract
Pests and diseases have a significant impact on crop health and yields, posing a serious threat to global agriculture. Effective management strategies, such as integrated pest management (IPM), including crop rotation, use of synthetic pesticides, biological control, and resistant/tolerant crop varieties, are essential to mitigate these risks and ensure sustainable agricultural practices. Fungal bioagents play an important role in managing phytopathogens and insect pests by acting as biological agents. They promote healthy plant growth by enhancing the uptake of nutrients and combating systemic resistance in plants. Furthermore, fungal bioagents are environmentally friendly, reducing application of fungicides and insecticides and minimizing their negative impact on the crops and environment. Their use in IPM promotes sustainable agriculture and ensures high-quality crops while maintaining soil health and microbial biodiversity. These fungal bioagents are rich sources of volatile organic compounds (VOCs), which play an important role in biological communication during interaction with insect pests and phytopathogens. In pest management, VOC production by beneficial fungi is accountable for their efficacy against pests and pathogens. Thus, this review discusses the important fungal bioagents producing VOCs, extraction methods of VOC, and the use of VOC-producing fungi in pest and disease management, knowledge gaps, and future research areas.
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Affiliation(s)
- Dheeraj Kumar
- Department of Mycology & Microbiology, Tea Research Association, North Bengal Regional R & D Center, Nagrakata, India
| | - Somnath Roy
- Entomology Department, Tea Research Association, Tocklai Tea Research Institute, Jorhat, India
| | - Azariah Babu
- Entomology Department, Tea Research Association, Tocklai Tea Research Institute, Jorhat, India
| | - Abhay K Pandey
- Department of Mycology & Microbiology, Tea Research Association, North Bengal Regional R & D Center, Nagrakata, India
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Qi W, Lu Y, Shao X, Maienfisch P. Effects of natural Ionones and derived novel analogues with simplified structures on behavioral responses of whiteflies. PEST MANAGEMENT SCIENCE 2024; 80:4523-4532. [PMID: 38747159 DOI: 10.1002/ps.8159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 03/02/2024] [Accepted: 04/25/2024] [Indexed: 08/10/2024]
Abstract
BACKGROUND Whiteflies are major pests in agriculture, causing damage to crops and transmitting plant viruses. Using Volatile Organic Compounds (VOCs) as semiochemicals offers a sustainable approach for combating whiteflies. One such group of compounds, represented by β-ionone, has been found to possess repellent/attractant properties. To further explore the behavioral effects of these compounds on whiteflies, we selected five natural ionone compounds and synthesized six novel analogues to examine the impact of structural variations on whitefly behavior. RESULTS Our results demonstrated that β-ionone and its analogues have a significant impact on the behavior of whiteflies. Among them, 0.01% pseudo ionone solution exhibited an attractant effect on whiteflies. Notably, the application of 1% β-ionone and 0.1% β-ionol solution demonstrated a notable repellent effect and oviposition deterrent effect on whitefly. We also found that the novel ionone analogue (±)1A exhibited a strong repellent effect. Both β-ionol and compound (±)1A possess high logP values and low saturation vapor pressures, which contribute to enhanced lipophilicity, making them more likely to penetrate insect antennae and prolong their presence in the air. CONCLUSION The newly discovered ionone analogue (±)1A and β-ionol exhibit improved repellent effects, while pseudo ionone shows an attractant effect. These three compounds hold promising potential for development as novel biological control agents. Our work highlights the efficacy of VOCs as a protection method against whiteflies. These findings indicate that our new technology for a 'push-pull' control method of B. tabaci can offer a novel tool for integrated pest management (IPM). © 2024 Society of Chemical Industry.
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Affiliation(s)
- Wensong Qi
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, China
| | - Yiming Lu
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, China
| | - Xusheng Shao
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, China
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, China
- Shanghai Frontier Science Research Base of Optogenetic Techniques for Cell Metabolism, School of Pharmacy, East China University of Science and Technology, Shanghai, China
- Engineering Research Center of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy, East China University of Science and Technology, Shanghai, China
| | - Peter Maienfisch
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, China
- CreInSol Consulting & Biocontrols, Rodersdorf, Switzerland
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6
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Ramírez-Ordorica A, Adame-Garnica SG, Ramos-Aboites HE, Winkler R, Macías-Rodríguez L. Volatile Semiochemicals Emitted by Beauveria bassiana Modulate Larval Feeding Behavior and Food Choice Preference in Spodoptera frugiperda (Lepidoptera: Noctuidae). J Fungi (Basel) 2024; 10:438. [PMID: 38921424 PMCID: PMC11204931 DOI: 10.3390/jof10060438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2024] [Revised: 06/18/2024] [Accepted: 06/18/2024] [Indexed: 06/27/2024] Open
Abstract
Beauveria bassiana is an entomopathogenic fungus that parasitizes and kills insects. The role of volatile organic compounds (VOCs) emitted by B. bassiana acting as semiochemicals during its interaction with lepidopterans is poorly explored. Here, we studied the effect of VOCs from B. bassiana and 3-methylbutanol (as a single compound) on the feeding behavior of L2 larvae of Spodoptera frugiperda in sorghum plants. Additionally, we assessed whether fungal VOCs induce chemical modifications in the plants that affect larval food preferences. Metabolomic profiling of plant tissues was performed by mass spectrometry and bioassays in a dual-choice olfactometer. The results showed that the larval feeding behavior was affected by the B. bassiana strain AI2, showing that the insect response is strain-specific. Furthermore, 80 µg of 3-methylbutanol affected the number of bites. The larval feeding choice was dependent on the background context. Fragment spectra and a matching precursor ion mass of 165.882 m/z enabled the putative identification of 4-coumaric acid in sorghum leaves exposed to fungal VOCs, which may be associated with larval deterrent responses. These results provide valuable insights into the bipartite interaction of B. bassiana with lepidopterans through VOC emission, with the plant as a mediator of the interaction.
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Affiliation(s)
- Arturo Ramírez-Ordorica
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Edificio B3, Ciudad Universitaria, Morelia C.P. 58030, Mexico;
| | - Sandra Goretti Adame-Garnica
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Edificio B3, Ciudad Universitaria, Morelia C.P. 58030, Mexico;
| | - Hilda Eréndira Ramos-Aboites
- Laboratorio de Análisis Bioquímico e Instrumental, Unidad de Genómica Avanzada, Cinvestav, Km 9.6, Libramiento Norte, Carretera Irapuato-León, Irapuato C.P. 36824, Mexico; (H.E.R.-A.); (R.W.)
| | - Robert Winkler
- Laboratorio de Análisis Bioquímico e Instrumental, Unidad de Genómica Avanzada, Cinvestav, Km 9.6, Libramiento Norte, Carretera Irapuato-León, Irapuato C.P. 36824, Mexico; (H.E.R.-A.); (R.W.)
| | - Lourdes Macías-Rodríguez
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Edificio B3, Ciudad Universitaria, Morelia C.P. 58030, Mexico;
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7
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Cuervo L, Méndez C, Salas JA, Olano C, Malmierca MG. Volatile communication in Actinobacteria: a language for secondary metabolism regulation. Microb Cell Fact 2024; 23:181. [PMID: 38890640 PMCID: PMC11186294 DOI: 10.1186/s12934-024-02456-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Accepted: 06/08/2024] [Indexed: 06/20/2024] Open
Abstract
BACKGROUND Volatile compounds are key elements in the interaction and communication between organisms at both interspecific and intraspecific levels. In complex bacterial communities, the emission of these fast-acting chemical messengers allows an exchange of information even at a certain distance that can cause different types of responses in the receiving organisms. The changes in secondary metabolism as a consequence of this interaction arouse great interest in the field of searching for bioactive compounds since they can be used as a tool to activate silenced metabolic pathways. Regarding the great metabolic potential that the Actinobacteria group presents in the production of compounds with attractive properties, we evaluated the reply the emitted volatile compounds can generate in other individuals of the same group. RESULTS We recently reported that volatile compounds released by different streptomycete species trigger the modulation of biosynthetic gene clusters in Streptomyces spp. which finally leads to the activation/repression of the production of secondary metabolites in the recipient strains. Here we present the application of this rationale in a broader bacterial community to evaluate volatiles as signaling effectors that drive the activation of biosynthesis of bioactive compounds in other members of the Actinobacteria group. Using cocultures of different actinobacteria (where only the volatile compounds reach the recipient strain) we were able to modify the bacterial secondary metabolism that drives overproduction (e.g., granaticins, actiphenol, chromomycins) and/or de novo production (e.g., collismycins, skyllamycins, cosmomycins) of compounds belonging to different chemical species that present important biological activities. CONCLUSIONS This work shows how the secondary metabolism of different Actinobacteria species can vary significantly when exposed in co-culture to the volatile compounds of other phylum-shared bacteria, these effects being variable depending on strains and culture media. This approach can be applied to the field of new drug discovery to increase the battery of bioactive compounds produced by bacteria that can potentially be used in treatments for humans and animals.
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Affiliation(s)
- Lorena Cuervo
- Department Functional Biology, University of Oviedo, 33006, Oviedo, Spain
- University Institute of Oncology of Asturias (I.U.O.P.A), University of Oviedo, 33006, Oviedo, Spain
- Health Research Institute of Asturias (ISPA), 33006, Oviedo, Spain
| | - Carmen Méndez
- Department Functional Biology, University of Oviedo, 33006, Oviedo, Spain
- University Institute of Oncology of Asturias (I.U.O.P.A), University of Oviedo, 33006, Oviedo, Spain
- Health Research Institute of Asturias (ISPA), 33006, Oviedo, Spain
| | - José A Salas
- Department Functional Biology, University of Oviedo, 33006, Oviedo, Spain
- University Institute of Oncology of Asturias (I.U.O.P.A), University of Oviedo, 33006, Oviedo, Spain
- Health Research Institute of Asturias (ISPA), 33006, Oviedo, Spain
| | - Carlos Olano
- Department Functional Biology, University of Oviedo, 33006, Oviedo, Spain
- University Institute of Oncology of Asturias (I.U.O.P.A), University of Oviedo, 33006, Oviedo, Spain
- Health Research Institute of Asturias (ISPA), 33006, Oviedo, Spain
| | - Mónica G Malmierca
- Department Functional Biology, University of Oviedo, 33006, Oviedo, Spain.
- University Institute of Oncology of Asturias (I.U.O.P.A), University of Oviedo, 33006, Oviedo, Spain.
- Health Research Institute of Asturias (ISPA), 33006, Oviedo, Spain.
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Tu J, Wang Z, Yang F, Liu H, Qiao G, Zhang A, Wang S. The Female-Biased General Odorant Binding Protein 2 of Semiothisa cinerearia Displays Binding Affinity for Biologically Active Host Plant Volatiles. BIOLOGY 2024; 13:274. [PMID: 38666886 PMCID: PMC11048283 DOI: 10.3390/biology13040274] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Revised: 04/13/2024] [Accepted: 04/16/2024] [Indexed: 04/28/2024]
Abstract
Herbivorous insects rely on volatile chemical cues from host plants to locate food sources and oviposition sites. General odorant binding proteins (GOBPs) are believed to be involved in the detection of host plant volatiles. In the present study, one GOBP gene, ScinGOBP2, was cloned from the antennae of adult Semiothisa cinerearia. Reverse-transcription PCR and real-time quantitative PCR analysis revealed that the expression of ScinGOBP2 was strongly biased towards the female antennae. Fluorescence-based competitive binding assays revealed that 8 of the 27 host plant volatiles, including geranyl acetone, decanal, cis-3-hexenyl n-valerate, cis-3-hexenyl butyrate, 1-nonene, dipentene, α-pinene and β-pinene, bound to ScinGOBP2 (KD = 2.21-14.94 μM). The electrical activities of all eight ScinGOBP2 ligands were confirmed using electroantennography. Furthermore, oviposition preference experiments showed that eight host volatiles, such as decanal, cis-3-hexenyl n-valerate, cis-3-hexenyl butyrate, and α-pinene, had an attractive effect on female S. cinerearia, whereas geranyl acetone, 1-nonene, β-pinene, and dipentene inhibited oviposition in females. Consequently, it can be postulated that ScinGOBP2 may be implicated in the perception of host plant volatiles and that ScinGOBP2 ligands represent significant semiochemicals mediating the interactions between plants and S. cinerearia. This insight could facilitate the development of a chemical ecology-based approach for the management of S. cinerearia.
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Affiliation(s)
- Jingjing Tu
- Key Laboratory of Environment Friendly Management on Fruit and Vegetable Pests in North China (Coconstructed by the Ministry and Province), Ministry of Agriculture and Rural Affairs, Institute of Plant Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; (J.T.); (Z.W.); (F.Y.); (H.L.); (G.Q.)
- College of Bioscience and Resources Environment, Beijing University of Agriculture, Beijing 102206, China;
| | - Zehua Wang
- Key Laboratory of Environment Friendly Management on Fruit and Vegetable Pests in North China (Coconstructed by the Ministry and Province), Ministry of Agriculture and Rural Affairs, Institute of Plant Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; (J.T.); (Z.W.); (F.Y.); (H.L.); (G.Q.)
| | - Fan Yang
- Key Laboratory of Environment Friendly Management on Fruit and Vegetable Pests in North China (Coconstructed by the Ministry and Province), Ministry of Agriculture and Rural Affairs, Institute of Plant Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; (J.T.); (Z.W.); (F.Y.); (H.L.); (G.Q.)
| | - Han Liu
- Key Laboratory of Environment Friendly Management on Fruit and Vegetable Pests in North China (Coconstructed by the Ministry and Province), Ministry of Agriculture and Rural Affairs, Institute of Plant Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; (J.T.); (Z.W.); (F.Y.); (H.L.); (G.Q.)
| | - Guanghang Qiao
- Key Laboratory of Environment Friendly Management on Fruit and Vegetable Pests in North China (Coconstructed by the Ministry and Province), Ministry of Agriculture and Rural Affairs, Institute of Plant Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; (J.T.); (Z.W.); (F.Y.); (H.L.); (G.Q.)
| | - Aihuan Zhang
- College of Bioscience and Resources Environment, Beijing University of Agriculture, Beijing 102206, China;
| | - Shanning Wang
- Key Laboratory of Environment Friendly Management on Fruit and Vegetable Pests in North China (Coconstructed by the Ministry and Province), Ministry of Agriculture and Rural Affairs, Institute of Plant Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; (J.T.); (Z.W.); (F.Y.); (H.L.); (G.Q.)
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9
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Flores N, Prado J, Espin R, Rodríguez H, Pais-Chanfrau JM. Laboratory evaluation of a bio-insecticide candidate from tangerine peel extracts against Trialeurodes vaporariorum (Homoptera: Aleyrodidae). PeerJ 2024; 12:e16885. [PMID: 38525279 PMCID: PMC10959105 DOI: 10.7717/peerj.16885] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Accepted: 01/13/2024] [Indexed: 03/26/2024] Open
Abstract
Background The excessive use of synthetic insecticides in modern agriculture has led to environmental contamination and the development of insect resistance. Also, the prolonged use of chemical insecticides in producing flowers and tomatoes in greenhouses has caused health problems for workers and their offspring. In this study, we analyzed the efficacy of mandarin peel (Citrus reticulata L.) essential oil (EO) as a natural insecticide against greenhouse whitefly (Trieurodes vaporariorum W., Homoptera: Aleyrodidae), a common pest in greenhouse production of different crops. Methods Petroleum ether (PET) and n-hexane (HEX) were used as solvents to extract essential oil (EO) from tangerine peels. Results The yield of EO was 1.59% and 2.00% (m/m) for PET and HEX, respectively. Additionally, the insect-killing power of EO was tested by checking how many greenhouse whiteflies died at different times. The results showed that PET and HEX extracts of tangerine EO effectively controlled greenhouse whiteflies. Furthermore, with both solvents, a 12.5% (v/v) application was as practical as the commercial insecticide imidacloprid. Further characterization tests with the polarimeter, FTIR, HPLC-RP, and GC-MS showed that the essential oil (EO) contained about 41% (v/v) of d-limonene and that this compound may be responsible for the observed insecticidal properties. Conclusion Therefore, tangerine peel essential oil is an excellent botanical insecticide candidate for controlling greenhouse whiteflies.
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Affiliation(s)
| | - Julia Prado
- FICAYA/Carrera de Agroindustria, Universidad Técnica del Norte (UTN), Ibarra, Imbabura, Ecuador
| | - Rosario Espin
- FICAYA/Carrera de Agroindustria, Universidad Técnica del Norte (UTN), Ibarra, Imbabura, Ecuador
| | - Hortensia Rodríguez
- School of Chemical Sciences and Engineering, Yachay Tech University, Urcuquí, Imbabura, Ecuador
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10
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Niassy S, Omuse ER, Khang’ati JE, Bächinger I, Kupesa DM, Cheseto X, Mbatha BW, Copeland RS, Mohamed SA, Gama M, Mitti JM, Belayneh Y, Delabays N, Lefort F, Ekesi S, Subramanian S. Validating Indigenous Farmers' Practice in the Management of the Fall Armyworm Spodoptera frugiperda (J. E. Smith) in Maize Cropping Systems in Africa. Life (Basel) 2024; 14:180. [PMID: 38398690 PMCID: PMC10890150 DOI: 10.3390/life14020180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 01/01/2024] [Accepted: 01/11/2024] [Indexed: 02/25/2024] Open
Abstract
Before the invasion of the fall armyworm (FAW) Spodoptera frugiperda into Africa, smallholder farmers had been using indigenous practices such as applying fish soup to plants to manage stemborer pests. Although farmers have since begun adapting this practice against FAW, no attempt has been made to scientifically evaluate this practice. Therefore, we assessed the efficacy of applying fish soup to maize plants that were artificially infested with FAW under semi-field conditions. Our results showed that foliar damage is inversely correlated with the concentration of a fish soup and sugar solution, with the highest (100%) concentration resulting in the lowest foliar damage and the highest plant recovery. The FAW foliar damage results for maize plants treated with 100%, 50%, 10% fish soup and sugar, and distilled water were 46.3 ± 5.6, 51.1 ± 5.0, 71.6 ± 5.2, and 99.4 ± 0.4%, respectively, whereas plant recovery results from the same treatments were 35.2 ± 3.7, 31.1 ± 5.4, 20.0 ± 4.6, and 0.0 ± 0.0%, respectively. A concentration of fish soup and sugar solution of at least 25.9% was required to achieve the lowest foliar damage of 17.8% and peak plant recovery of 73.6%. Fish soup and sugar solutions attracted a wide range of insects, including potential natural enemies (predators and parasitoids) of FAW, in a dose-dependent manner. Maize plants treated with fish soup and sugar showed higher chlorophyll content and better growth than the control did. Proximate and chemical analysis showed that fish soup contains essential plant growth nutrients (e.g., nitrogen, phosphorus, and calcium). Through GC-MS analyses, we identified 76 volatile organic compounds in fish soup, of which 16 have been reported as insect attractants, highlighting their potential ecological significance. Therefore, the indigenous pest management practices for FAW, such as the use of fish soup, deserve particular attention. These practices could contribute to food security and improve the livelihoods of vulnerable communities. Further field validation studies, economic analyses, product development, and optimisation are therefore required to optimise the use of fish soup based on fish waste.
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Affiliation(s)
- Saliou Niassy
- International Centre of Insect Physiology and Ecology, Nairobi P.O. Box 30772-00100, Kenya; (E.R.O.); (J.E.K.); (D.M.K.); (X.C.); (B.W.M.); (R.S.C.); (S.A.M.); (S.E.); (S.S.)
| | - Evanson Rigan Omuse
- International Centre of Insect Physiology and Ecology, Nairobi P.O. Box 30772-00100, Kenya; (E.R.O.); (J.E.K.); (D.M.K.); (X.C.); (B.W.M.); (R.S.C.); (S.A.M.); (S.E.); (S.S.)
| | - John Emanuel Khang’ati
- International Centre of Insect Physiology and Ecology, Nairobi P.O. Box 30772-00100, Kenya; (E.R.O.); (J.E.K.); (D.M.K.); (X.C.); (B.W.M.); (R.S.C.); (S.A.M.); (S.E.); (S.S.)
| | - Ines Bächinger
- Research Institute Land Nature Environment, Geneva School of Engineering Architecture and Landscape, HES-SO University of Applied Sciences and Arts Western Switzerland, CH-1254 Jussy, Switzerland; (I.B.); (N.D.)
| | - David Mfuti Kupesa
- International Centre of Insect Physiology and Ecology, Nairobi P.O. Box 30772-00100, Kenya; (E.R.O.); (J.E.K.); (D.M.K.); (X.C.); (B.W.M.); (R.S.C.); (S.A.M.); (S.E.); (S.S.)
| | - Xavier Cheseto
- International Centre of Insect Physiology and Ecology, Nairobi P.O. Box 30772-00100, Kenya; (E.R.O.); (J.E.K.); (D.M.K.); (X.C.); (B.W.M.); (R.S.C.); (S.A.M.); (S.E.); (S.S.)
| | - Benjamin W. Mbatha
- International Centre of Insect Physiology and Ecology, Nairobi P.O. Box 30772-00100, Kenya; (E.R.O.); (J.E.K.); (D.M.K.); (X.C.); (B.W.M.); (R.S.C.); (S.A.M.); (S.E.); (S.S.)
| | - Robert S. Copeland
- International Centre of Insect Physiology and Ecology, Nairobi P.O. Box 30772-00100, Kenya; (E.R.O.); (J.E.K.); (D.M.K.); (X.C.); (B.W.M.); (R.S.C.); (S.A.M.); (S.E.); (S.S.)
| | - Samira Abuelgasim Mohamed
- International Centre of Insect Physiology and Ecology, Nairobi P.O. Box 30772-00100, Kenya; (E.R.O.); (J.E.K.); (D.M.K.); (X.C.); (B.W.M.); (R.S.C.); (S.A.M.); (S.E.); (S.S.)
| | - Mphatso Gama
- Machinga Agricultural Development Division, Liwonde Private Bag 3, Malawi;
| | - Joyce Mulila Mitti
- Figtree Limited (Figtree Consulting Services), Lusaka P.O. Box 33304-10101, Zambia;
| | - Yeneneh Belayneh
- USAID’s Bureau for Humanitarian Assistance (BHA) and Technical and Program Quality (TPQ), 1300 Pennsylvania Avenue, Washington, DC 20523, USA;
| | - Nicolas Delabays
- Research Institute Land Nature Environment, Geneva School of Engineering Architecture and Landscape, HES-SO University of Applied Sciences and Arts Western Switzerland, CH-1254 Jussy, Switzerland; (I.B.); (N.D.)
| | - François Lefort
- Research Institute Land Nature Environment, Geneva School of Engineering Architecture and Landscape, HES-SO University of Applied Sciences and Arts Western Switzerland, CH-1254 Jussy, Switzerland; (I.B.); (N.D.)
| | - Sunday Ekesi
- International Centre of Insect Physiology and Ecology, Nairobi P.O. Box 30772-00100, Kenya; (E.R.O.); (J.E.K.); (D.M.K.); (X.C.); (B.W.M.); (R.S.C.); (S.A.M.); (S.E.); (S.S.)
| | - Sevgan Subramanian
- International Centre of Insect Physiology and Ecology, Nairobi P.O. Box 30772-00100, Kenya; (E.R.O.); (J.E.K.); (D.M.K.); (X.C.); (B.W.M.); (R.S.C.); (S.A.M.); (S.E.); (S.S.)
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11
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Meijer D, Hopkoper S, Weldegergis BT, Westende WV, Gort G, van Loon JJA, Dicke M. Effects of far-red light on the behaviour and reproduction of the zoophytophagous predator Macrolophus pygmaeus and its interaction with a whitefly herbivore. PLANT, CELL & ENVIRONMENT 2024; 47:187-196. [PMID: 37705240 DOI: 10.1111/pce.14723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 09/01/2023] [Accepted: 09/07/2023] [Indexed: 09/15/2023]
Abstract
Plants can detect neighbouring plants through a reduction in the ratio between red and far-red light (R:FR). This provides a signal of plant-plant competition and induces rapid plant growth while inhibiting defence against biotic stress, two interlinked responses designated as the shade avoidance syndrome (SAS). Consequently, the SAS can influence plant-herbivore interactions that could cascade to higher trophic levels. However, little is known about how the expression of the SAS can influence tritrophic interactions. We investigated whether changes in R:FR affect the emission of herbivore-induced plant volatiles (HIPVs), and whether these changes influence the attraction of the zoophytophagous predator Macrolophus pygmaeus. We also studied how the expression of the SAS and subsequent inhibition of plant defences affects the reproduction of M. pygmaeus in both the presence and absence of the greenhouse whitefly (WF) (Trialeurodes vaporariorum) as arthropod prey. The results show that changes in R:FR have little effect on HIPV emissions and predator attraction. However, a reduction in R:FR leads to increased reproduction of both the predator and the WFs. We discuss that shade avoidance responses can increase the population development of M. pygmaeus through a combination of reduced plant defences and increased herbivore densities.
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Affiliation(s)
- Davy Meijer
- Laboratory of Entomology, Wageningen University, AA Wageningen, The Netherlands
| | - Syb Hopkoper
- Laboratory of Entomology, Wageningen University, AA Wageningen, The Netherlands
| | | | - Wendy Van't Westende
- Laboratory of Plant Breeding, Wageningen University, AA Wageningen, The Netherlands
| | - Gerrit Gort
- Biometris, Wageningen University, AA Wageningen, The Netherlands
| | - Joop J A van Loon
- Laboratory of Entomology, Wageningen University, AA Wageningen, The Netherlands
| | - Marcel Dicke
- Laboratory of Entomology, Wageningen University, AA Wageningen, The Netherlands
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Chacón-Fuentes M, Bardehle L, Seguel I, Espinoza J, Lizama M, Quiroz A. Herbivory Damage Increased VOCs in Wild Relatives of Murtilla Plants Compared to Their First Offspring. Metabolites 2023; 13:metabo13050616. [PMID: 37233657 DOI: 10.3390/metabo13050616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 04/10/2023] [Accepted: 04/25/2023] [Indexed: 05/27/2023] Open
Abstract
Murtilla (Ugni molinae) is a shrub native to Chile that has undergone an incipient domestication process aimed at increasing its productivity. The reduction in intrinsic chemical defenses due to the domestication process has resulted in a decrease in the plant's ability to defend itself against mechanical or insect damage. In response to this damage, plants release volatile organic compounds (VOCs) as a means of defense. To understand how domestication has impacted the production of VOCs in the first offspring of murtilla, we hypothesized that their levels would be reduced due to the induction of mechanical and herbivore damage. To test this hypothesis, we collected VOCs from four offspring ecotypes and three wild relatives of murtilla. We induced mechanical and herbivore damage in the plants and then enclosed them in a glass chamber, where we captured the VOCs. We identified 12 compounds using GC-MS. Our results showed that wild relative ecotypes had a higher VOC release rate of 624.6 µg/cm2/day. Herbivore damage was the treatment that produced the highest release of VOCs, with 439.3 µg/cm2/day in wild relatives. These findings suggest that herbivory triggers defenses through the emission of VOCs, and that domestication has influenced the production of these compounds in murtilla. Overall, this study contributes to bridging the gap in the incipient domestication history of murtilla and highlights the importance of considering the impact of domestication on a plant's chemical defenses.
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Affiliation(s)
| | - Leonardo Bardehle
- Laboratorio de Química Ecológica, Departamento de Ciencias Químicas y Recursos Naturales, Universidad de La Frontera, Av. Francisco Salazar 01145, Casilla 54-D, Temuco 4811230, Chile
- Centro de Investigación Biotecnológica Aplicada al Medio Ambiente (CIBAMA), Universidad de La Frontera, Av. Francisco Salazar 01145, Casilla 54-D, Temuco 4780000, Chile
- Departamento de Producción Agropecuaria, Facultad de Ciencias Agropecuarias y Medioambiente, Universidad de La Frontera, Av. Francisco Salazar 01145, Casilla 54-D, Temuco 4811230, Chile
| | - Ivette Seguel
- Innovalimentos SPA, Gabriela Mistral 02311, Temuco 4780000, Chile
| | - Javier Espinoza
- Laboratorio de Química Ecológica, Departamento de Ciencias Químicas y Recursos Naturales, Universidad de La Frontera, Av. Francisco Salazar 01145, Casilla 54-D, Temuco 4811230, Chile
- Centro de Investigación Biotecnológica Aplicada al Medio Ambiente (CIBAMA), Universidad de La Frontera, Av. Francisco Salazar 01145, Casilla 54-D, Temuco 4780000, Chile
| | - Marcelo Lizama
- Programa de Doctorado en Ciencias Agroalimentarias y Medioambiente, Facultad de Ciencias Agropecuarias y Medioambiente, Universidad de La Frontera, Temuco 4811230, Chile
| | - Andrés Quiroz
- Laboratorio de Química Ecológica, Departamento de Ciencias Químicas y Recursos Naturales, Universidad de La Frontera, Av. Francisco Salazar 01145, Casilla 54-D, Temuco 4811230, Chile
- Centro de Investigación Biotecnológica Aplicada al Medio Ambiente (CIBAMA), Universidad de La Frontera, Av. Francisco Salazar 01145, Casilla 54-D, Temuco 4780000, Chile
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13
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Lin PA, Kansman J, Chuang WP, Robert C, Erb M, Felton GW. Water availability and plant-herbivore interactions. JOURNAL OF EXPERIMENTAL BOTANY 2023; 74:2811-2828. [PMID: 36477789 DOI: 10.1093/jxb/erac481] [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: 07/28/2022] [Accepted: 12/04/2022] [Indexed: 06/06/2023]
Abstract
Water is essential to plant growth and drives plant evolution and interactions with other organisms such as herbivores. However, water availability fluctuates, and these fluctuations are intensified by climate change. How plant water availability influences plant-herbivore interactions in the future is an important question in basic and applied ecology. Here we summarize and synthesize the recent discoveries on the impact of water availability on plant antiherbivore defense ecology and the underlying physiological processes. Water deficit tends to enhance plant resistance and escape traits (i.e. early phenology) against herbivory but negatively affects other defense strategies, including indirect defense and tolerance. However, exceptions are sometimes observed in specific plant-herbivore species pairs. We discuss the effect of water availability on species interactions associated with plants and herbivores from individual to community levels and how these interactions drive plant evolution. Although water stress and many other abiotic stresses are predicted to increase in intensity and frequency due to climate change, we identify a significant lack of study on the interactive impact of additional abiotic stressors on water-plant-herbivore interactions. This review summarizes critical knowledge gaps and informs possible future research directions in water-plant-herbivore interactions.
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Affiliation(s)
- Po-An Lin
- Department of Entomology, National Taiwan University, Taipei, Taiwan
| | - Jessica Kansman
- Department of Entomology, the Pennsylvania State University, University Park, PA, USA
| | - Wen-Po Chuang
- Department of Agronomy, National Taiwan University, Taipei, Taiwan
| | | | - Matthias Erb
- Institute of Plant Science, University of Bern, Bern, Switzerland
| | - Gary W Felton
- Department of Entomology, the Pennsylvania State University, University Park, PA, USA
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Ali J, Wei D, Mahamood M, Zhou F, King PJH, Zhou W, Shamsi IH. Exogenous Application of Methyl Salicylate Induces Defence in Brassica against Peach Potato Aphid Myzus persicae. PLANTS (BASEL, SWITZERLAND) 2023; 12:plants12091770. [PMID: 37176828 PMCID: PMC10180576 DOI: 10.3390/plants12091770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 04/21/2023] [Accepted: 04/23/2023] [Indexed: 05/15/2023]
Abstract
Plants use a variety of secondary metabolites to defend themselves against herbivore insects. Methyl salicylate (MeSA) is a natural plant-derived compound that has been used as a plant defence elicitor and a herbivore repellent on several crop plants. The aim of this study was to investigate the effect of MeSA treatment of Brassica rapa subsp. chinensis ('Hanakan' pak choi) on its interactions with peach potato aphids, Myzus persicae, and their natural enemy, Diaeretiella rapae. For this, we selected two concentrations of MeSA (75 mg/L and 100 mg/L). Our results showed that aphid performance was significantly reduced on plants treated with MeSA (100 mg/L). In a cage bioassay, the MeSA (100 mg/L)-treated plants showed lower adult survival and larviposition. Similarly, the MeSA (100 mg/L)-treated plants had a significantly lower aphid settlement in a settlement bioassay. In contrast, the M. persicae aphids did not show any significant difference between the MeSA (75 mg/L)-treated and control plants. In a parasitoid foraging bioassay, the parasitoid D. rapae also did not show any significant difference in the time spent on MeSA-treated and control plants. A volatile analysis showed that the MeSA treatment induced a significant change in volatile emissions, as high numbers of volatile compounds were detected from the MeSA-treated plants. Our results showed that MeSA has potential to induce defence in Brassica against M. persicae and can be utilised in developing sustainable approaches for the management of peach potato aphids.
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Affiliation(s)
- Jamin Ali
- School of Life Sciences, Keele University, Keele, Staffordshire ST5 5BG, UK
| | - Dongming Wei
- Key Laboratory of Crop Germplasm Resource, Department of Agronomy, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Mohammad Mahamood
- Department of Biology, Qassim University, Buraydah 51452, Saudi Arabia
| | - Fanrui Zhou
- Department of Food Science and Nutrition, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang University, Hangzhou 310058, China
- Key Laboratory of State Forestry and Grassland Administration on Highly Efficient Utilization of Forestry Biomass Resources in Southwest China, College of Material and Chemical Engineering, Southwest Forestry University, Kunming 650224, China
| | - Patricia Jie Hung King
- Institute of Ecosystem Science Borneo, University Putra Malaysia, Bintulu 97000, Malaysia
- Faculty of Agricultural and Forestry Sciences, University Putra Malaysia, Bintulu 97000, Malaysia
| | - Wenwu Zhou
- Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Institute of Insect Sciences, Zhejiang University, Hangzhou 310058, China
| | - Imran Haider Shamsi
- Key Laboratory of Crop Germplasm Resource, Department of Agronomy, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
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Ming L, Du YW, Yuan GG, Su Q, Shi XB, Yu H, Chen G. Spodoptera litura larvae are attracted by HvAV-3h-infected S. litura larvae-damaged pepper leaves. PEST MANAGEMENT SCIENCE 2023. [PMID: 36905637 DOI: 10.1002/ps.7449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 02/21/2023] [Accepted: 03/11/2023] [Indexed: 06/18/2023]
Abstract
BACKGROUND Herbivore-induced plant volatiles (HIPVs) are important self-defense outputs of pepper plants to resist insect pests. Ascoviruses are pathogenic to the larvae of most lepidopteran vegetable pests. However, whether Heliothis virescens ascovirus 3h (HvAV-3h)-infected Spodoptera litura larvae can change pepper leaf HIPVs is not well understood. RESULTS Spodoptera litura larvae preferred S. litura-infested leaves, and this preference was stronger with longer duration of S. litura infestation. In addition, S. litura larvae significantly chose pepper leaves damaged by HvAV-3h-infected S. litura over the healthy pepper leaves. Results also showed that S. litura larvae preferred leaves mechanically damaged and treated with oral secretions from HvAV-3h infected-S. litura larvae in a simulation test. We captured the volatiles emitted by leaves under six treatments. Results showed that the volatile profile changed with the different treatments. Testing of volatile blends, prepared to the proportion released showed that the blend from simulated HvAV-3h-infected S. litura larvae-damaged plants was the most attractive to S. litura larvae. Further, we also found that some of the compounds significantly attracted S. litura larvae at specific concentrations. CONCLUSION HvAV-3h-infected S. litura can alter the release of HIPVs in pepper plants and thus become more attractive to S. litura larvae. We speculate that this may be due to alterations in the concentration of some compounds (such as geranylacetone and prohydrojasmon) affecting the behavior of S. litura larvae. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Lang Ming
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, Hunan Agricultural University, Changsha, Hunan, People's Republic of China
- College of Plant Protection, Hunan Agricultural University, Changsha, Hunan, People's Republic of China
| | - Yuan-Wen Du
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, Hunan Agricultural University, Changsha, Hunan, People's Republic of China
- College of Plant Protection, Hunan Agricultural University, Changsha, Hunan, People's Republic of China
| | - Ge-Ge Yuan
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, Hunan Agricultural University, Changsha, Hunan, People's Republic of China
- College of Plant Protection, Hunan Agricultural University, Changsha, Hunan, People's Republic of China
| | - Qi Su
- College of Agriculture, Yangtze University, Jingzhou, Hubei, People's Republic of China
| | - Xiao-Bing Shi
- Hunan Plant Protection Institute, Hunan Academy of Agricultural Sciences, Changsha, Hunan, People's Republic of China
| | - Huan Yu
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, Hunan Agricultural University, Changsha, Hunan, People's Republic of China
- College of Plant Protection, Hunan Agricultural University, Changsha, Hunan, People's Republic of China
| | - Gong Chen
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, Hunan Agricultural University, Changsha, Hunan, People's Republic of China
- College of Plant Protection, Hunan Agricultural University, Changsha, Hunan, People's Republic of China
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Ali Q, Yu C, Wang Y, Sheng T, Zhao X, Wu X, Jing L, Gu Q, Wu H, Gao X. High killing rate of nematode and promotion of rice growth by synthetic volatiles from Bacillus strains due to enhanced oxidative stress response. PHYSIOLOGIA PLANTARUM 2023; 175:e13868. [PMID: 36724171 DOI: 10.1111/ppl.13868] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 12/29/2022] [Accepted: 01/25/2023] [Indexed: 06/18/2023]
Abstract
The plant parasitic nematode Aphelenchoides besseyi is a major pest that poses serious threats to different vegetables and crop plants. In the present study, volatiles isolated from Bacillus spp. were utilized as green biocontrol agents to overcome nematodes. In in vitro experiment, Bacillus spp. GBSC56, SYST2, and FZB42 showed the strongest nematicidal activity with killing rates of 80.78%, 75.69%, and 60.45%, respectively, as compared with control. The selected synthetic volatile organic compounds (VOCs), namely albuterol, benzaldehyde (BDH), 1,2-benzisothiazol-3(2H)-one (1,2-HIT), dimethyl disulfide (DMDS), 2-undecanone (2-UD), and 1,3-propanediole (1,3-PD), exhibited strong nematicidal activity, with A. besseyi killing rate of 85.58%, 82.65%, 81.75%, 80.36%, 84.45%, and 82.36%, respectively, at 400 μg/mL. Microscopic analysis proved that the rapid mortality was due to the production of reactive oxygen species (ROS). Molecular docking attributed this ROS production to the nematicidal effect of synthetic VOCs on NADH DEHYDROGENASE SUBUNIT 2, which is known to play a critical role in the suppression of ROS in nematode models. In a greenhouse experiment, the Bacillus strains GBSC56, SYST2, and FZB42 and their synthetic VOCs significantly improved the physiological parameters in terms of growth promotion traits. In addition, selected genes related to growth promotion and defense genes showed a significant upregulation of their expression in rice seedlings treated with those synthetic VOCs. Overall, these findings revealed that the selected Bacillus strains and their synthetic VOCs possess high potential against A. besseyi. Moreover, this study also sheds new light on the mechanisms by which specific Bacillus nematicidal VOCs influence important genes involved in rice plant growth promotion and could effectively be used to suppress plant parasitic nematodes.
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Affiliation(s)
- Qurban Ali
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Chenjie Yu
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Yujie Wang
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Tao Sheng
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Xiaozhen Zhao
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Xiaohui Wu
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Liang Jing
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Qin Gu
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Huijun Wu
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Xuewen Gao
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing, China
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Bhavanam S, Stout MJ. Varietal Resistance and Chemical Ecology of the Rice Stink Bug, Oebalus pugnax, on Rice, Oryza sativa. PLANTS (BASEL, SWITZERLAND) 2022; 11:3169. [PMID: 36432898 PMCID: PMC9699337 DOI: 10.3390/plants11223169] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 11/13/2022] [Accepted: 11/15/2022] [Indexed: 06/16/2023]
Abstract
The rice stink bug, Oebalus pugnax F. (Hemiptera: Pentatomidae), is a key pest of heading rice in the southern United States. Chemical insecticide application is currently the primary method of control of O. pugnax, warranting an improved management program for this species. The potential other management tactics for O. pugnax include eco-friendly measures such as host-plant resistance, silicon application, and the use of semiochemicals. In this study, the feeding preference and performance of O. puganx on cultivated and non-cultivated rice varieties were examined. Choice tests showed that the rice varieties Cheniere and Kaybonnet were most and least preferred by O. pugnax for feeding, respectively. The results of a no-choice experiment showed that the number of nymphs surviving to the adult stage did not differ among rice varieties, although the percent survival was low on the varieties Kaybonnet and Jazzman. Here, we also showed for the first time that silicon application had a significant negative impact on O. pugnax performance, increasing the nymph development time and reducing survival by almost 40% relative to the control. Based on these results, it could be suggested that silicon amendment is a promising management strategy for this pest. Further research is needed to examine whether silicon application also reduces the feeding damage caused by O. puganx. In addition, the chemical compositions of the metathoracic gland and dorsal abdominal gland extracts were also characterized for the first time in this study, and their biological roles and potential use in pest management are discussed.
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Cagáň Ľ, Apacsová Fusková M, Hlávková D, Skoková Habuštová O. Essential Oils: Useful Tools in Storage-Pest Management. PLANTS (BASEL, SWITZERLAND) 2022; 11:plants11223077. [PMID: 36432806 PMCID: PMC9692832 DOI: 10.3390/plants11223077] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 11/08/2022] [Accepted: 11/11/2022] [Indexed: 05/31/2023]
Abstract
This study aimed to verify the level of repellent and mortality effect of two chemical substances (DEET and 2-undecanone) and seven essential oils (EOs), Allium sativum, Artemisia annua, Ocimum basilicum, Lavandula angustifolia, Eucalyptus globulus, Pinus sylvestris, and Curcuma longa. The storage pests Tribolium confusum, Tenebrio molitor, and Acanthoscelides obtectus were exposed to various concentrations in an olfactometer-and-mortality test. The effects were recorded 24-48-72 h after the treatments were applied. A. sativum, E. globulus, and L. augustifolia were found to have significant repellence effects. A substantial lethal effect was observed for A. sativum, E. globulus, and O. basilicum. We also found that even if the most efficient EOs were diluted to low concentrations, they still produced repellent and mortality effects. The presented results indicate that A. sativum and O. basilicum were the most effective against T. confusum and T. molitor; simultaneously, L. angustifolia and C. longa showed high activity against A. obtectus. All of these efficient EOs could be applied as effective bio-control agents in various stored conditions.
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Affiliation(s)
- Ľudovít Cagáň
- Department of Plant Protection, Slovak University of Agriculture, 949 76 Nitra, Slovakia
| | - Miroslava Apacsová Fusková
- National Agricultural and Food Centre, Research Institute of Plant Production, 921 01 Piešťany, Slovakia
| | - Daniela Hlávková
- Biology Centre, Czech Academy of Sciences, Institute of Entomology, 370 05 České Budějovice, Czech Republic
- Faculty of Science, University of South Bohemia, Branišovská 31a, 370 05 České Budějovice, Czech Republic
| | - Oxana Skoková Habuštová
- Biology Centre, Czech Academy of Sciences, Institute of Entomology, 370 05 České Budějovice, Czech Republic
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19
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Gondor OK, Pál M, Janda T, Szalai G. The role of methyl salicylate in plant growth under stress conditions. JOURNAL OF PLANT PHYSIOLOGY 2022; 277:153809. [PMID: 36099699 DOI: 10.1016/j.jplph.2022.153809] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Revised: 09/02/2022] [Accepted: 09/02/2022] [Indexed: 06/15/2023]
Abstract
Methyl salicylate is a volatile compound, the synthesis of which takes place via the salicylic acid pathway in plants. Both compounds can be involved in the development of systemic acquired resistance and they play their role partly independently. Salicylic acid transport has an important role in long-distance signalling, but methyl salicylate has also been suggested as a phloem-based mobile signal, which can be demethylated to form salicylic acid, inducing the de-novo synthesis of salicylic acid in distal tissue. Despite the fact that salicylic acid has a protective role in abiotic stress responses and tolerance, very few investigations have been reported on the similar effects of methyl salicylate. In addition, as salicylic acid and methyl salicylate are often treated simply as the volatile and non-volatile forms of the same compound, and in several cases they also act in the same way, it is hard to highlight the differences in their mode of action. The main aim of the present review is to reveal the individual role and action mechanism of methyl salicylate in systemic acquired resistance, plant-plant communication and various stress conditions in fruits and plants.
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Affiliation(s)
- Orsolya Kinga Gondor
- Eötvös Loránd Research Network, Centre for Agricultural Research, 2462 Martonvásár, H-2462, Hungary.
| | - Magda Pál
- Eötvös Loránd Research Network, Centre for Agricultural Research, 2462 Martonvásár, H-2462, Hungary
| | - Tibor Janda
- Eötvös Loránd Research Network, Centre for Agricultural Research, 2462 Martonvásár, H-2462, Hungary
| | - Gabriella Szalai
- Eötvös Loránd Research Network, Centre for Agricultural Research, 2462 Martonvásár, H-2462, Hungary
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20
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Paradza VM, Khamis FM, Yusuf AA, Subramanian S, Akutse KS. Efficacy of Metarhizium anisopliae and ( E)-2-hexenal combination using autodissemination technology for the management of the adult greenhouse whitefly, Trialeurodes vaporariorum Westwood (Hemiptera: Aleyrodidae). FRONTIERS IN INSECT SCIENCE 2022; 2:991336. [PMID: 38646071 PMCID: PMC11027017 DOI: 10.3389/finsc.2022.991336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Accepted: 08/24/2022] [Indexed: 04/23/2024]
Abstract
The efficiency of an autodissemination technique in controlling adult whiteflies, Trialeurodes vaporariorum Westwood (Hemiptera: Aleyrodidae) on tomato, Solunum lycopersicum was investigated with previously identified potent fungal isolates of Metarhizium anisopliae ICIPE 18, ICIPE 62 and ICIPE 69 under screenhouse or semi-field conditions. The autodissemination device was inoculated with dry conidia of the M. anisopliae isolates, while control insects were exposed to a fungus-free device. Sampling for conidia uptake, conidial viability and persistence, and insect mortality was done at 1, 2, 3, 5 and 8 days post-exposure, and collected insects were monitored for mortality over ten days. Overall, mortality was higher in insects exposed to ICIPE 18 (62.8%) and ICIPE 69 (61.8%) than in those exposed to ICIPE 62 (42.6%), with median lethal times, (LT50) ranging between 6.73-8.54 days. The control group recorded the lowest mortality rates (18.9%). A general linear reduction in conidial viability with exposure time was observed, although this was more pronounced with M. anisopliae ICIPE 62. Insects exposed to M. anisopliae ICIPE 69 also recorded the highest conidia uptake, hence selected for further evaluation with a T. vaporariorum attractant volatile organic compound, (E)-2-hexenal. The volatile inhibited fungal germination in laboratory compatibility tests, therefore, spatial separation of M. anisopliae ICIPE 69 and (E)-2-hexenal in the autodissemination device was conducted. The inhibitory effects of the volatile were significantly reduced by spatial separation at a distance of 5 cm between the fungus and the volatile, which was found to be more suitable and chosen for the subsequent experiments. Results showed that (E)-2-hexenal did not influence conidia uptake by the insects, while fungal viability and the subsequent mortality variations were more related to duration of exposure. The fungus-volatile compatibility demonstrated with spatial separation provides a basis for the optimisation of the volatile formulation to achieve better T. vaporariorum suppression with an excellent autodissemination efficiency when used in the management of whiteflies under screenhouse conditions.
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Affiliation(s)
- Vongai M. Paradza
- Plant Health Theme, International Centre of Insect Physiology and Ecology (icipe), Nairobi, Kenya
- Department of Zoology and Entomology, University of Pretoria, Hatfield, South Africa
| | - Fathiya M. Khamis
- Plant Health Theme, International Centre of Insect Physiology and Ecology (icipe), Nairobi, Kenya
| | - Abdullahi A. Yusuf
- Department of Zoology and Entomology, University of Pretoria, Hatfield, South Africa
- Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Hatfield, South Africa
| | - Sevgan Subramanian
- Plant Health Theme, International Centre of Insect Physiology and Ecology (icipe), Nairobi, Kenya
| | - Komivi S. Akutse
- Plant Health Theme, International Centre of Insect Physiology and Ecology (icipe), Nairobi, Kenya
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Huang Q, Han X, Zhang G, Zhu-Salzman K, Cheng W. Plant Volatiles Mediate Host Selection of Sitodiplosis mosellana (Diptera: Cecidomyiidae) among Wheat Varieties. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:10466-10475. [PMID: 35994613 DOI: 10.1021/acs.jafc.2c03244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Sitodiplosis mosellana is a major wheat pest that oviposits on spikes, and resistant wheat varieties have been released. However, wheat spike volatiles mediating S. mosellana host selection or resistance are largely unknown. In this study, we found that the highly susceptible wheat varieties Xinong 822, Xinong 88, and Xiaoyan 22 were preferred for S. mosellana oviposition, and their spike volatiles were more attractive to females compared to the resistant varieties Kenong 1006, Shanmai 139, and Jinmai 47. Importantly, we found five odor components evoking obvious concentration-dependent electroantennogram (EAG) and behavioral response. Notably, 3-hexanol, cis-3-hexenylacetate, and hexyl acetate strongly attracted females, whereas ocimene, a dominant component of three resistant varieties, and α-farnesene, absent in Xinong 88, repelled females. Significant attraction was also observed in a synthetic blend mimicking Xinong 822 volatiles. These results suggest that these wheat volatiles are involved in host selection of S. mosellana and provide a basis for development of semichemical-based pest management.
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Affiliation(s)
- Qitong Huang
- Key Laboratory of Plant Protection Resources & Pest Management of the Ministry of Education, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Xianqi Han
- Key Laboratory of Plant Protection Resources & Pest Management of the Ministry of Education, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Guojun Zhang
- Key Laboratory of Plant Protection Resources & Pest Management of the Ministry of Education, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Keyan Zhu-Salzman
- Department of Entomology, Texas A&M University, College Station, Texas 77843, United States
| | - Weining Cheng
- Key Laboratory of Plant Protection Resources & Pest Management of the Ministry of Education, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
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Ali MY, Naseem T, Zhang J, Pan M, Zhang F, Liu TX. Plant Volatiles and Herbivore Induced Plant Volatiles from Chili Pepper Act as Attractant of the Aphid Parasitoid Aphelinus varipes (Hymenoptera: Aphelinidae). PLANTS 2022; 11:plants11101350. [PMID: 35631774 PMCID: PMC9145887 DOI: 10.3390/plants11101350] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 05/03/2022] [Accepted: 05/16/2022] [Indexed: 11/17/2022]
Abstract
Plants have evolved a number of different chemical defenses, covering nearly all classes of (secondary) metabolites, that represent a major barrier to herbivory: some are constitutive; others are induced after attacks from herbivores (HIPVs) and may elicit the attraction of predators and parasitoids. Here, we studied how the female solitary endoparasitoid Aphelinus varipes responds to plant and host aphid volatiles in a series of experiments on five commercially important vegetables that were either healthy or infested with the aphid Myzus persicae: chili pepper, eggplant, crown daisy, Chinese cabbage and cabbage. The results for the olfactory responses of A. varipes showed that the presence of M. persicae increased the attraction of the endoparasitoid to the infested plants. In a second experiment, volatiles from highly attractive and repellent plants were obtained via headspace collection to investigate volatiles from healthy and aphid-damaged plants. The results for the differences in volatile profiles in response to aphid infestation in chili pepper cultivar were dominated by the volatile blends, including α-pinene, decanal and phthalic acid, while in cabbage they were dominated by isophorone. Moreover, when HIPVs with different concentrations were compared, α-pinene at a dose rate of 100 ng/μL attracted more parasitoids, and the comparison was useful to understand the mechanisms of plant secondary volatiles during aphid infestation and to provide new resources to control this insect pest. Overall our study shows how HIPVs can bolster tritrophic interactions by enhancing the attractiveness of parasitoids.
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Affiliation(s)
- Muhammad Yasir Ali
- Key Laboratory of Insect Ecology and Molecular Biology, College of Plant Health and Medicine, Qingdao Agricultural University, Qingdao 266109, China; (M.Y.A.); (M.P.)
- MARA-CABI Joint Laboratory for Bio-Safety, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China;
| | - Tayyaba Naseem
- Department of Botany, University of Agriculture Faisalabad, Faisalabad 38000, Pakistan;
| | - Jinping Zhang
- MARA-CABI Joint Laboratory for Bio-Safety, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China;
| | - Mingzhen Pan
- Key Laboratory of Insect Ecology and Molecular Biology, College of Plant Health and Medicine, Qingdao Agricultural University, Qingdao 266109, China; (M.Y.A.); (M.P.)
| | - Feng Zhang
- MARA-CABI Joint Laboratory for Bio-Safety, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China;
- Correspondence: (F.Z.); (T.-X.L.)
| | - Tong-Xian Liu
- Key Laboratory of Insect Ecology and Molecular Biology, College of Plant Health and Medicine, Qingdao Agricultural University, Qingdao 266109, China; (M.Y.A.); (M.P.)
- Correspondence: (F.Z.); (T.-X.L.)
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Agbessenou A, Akutse KS, Yusuf AA, Khamis FM. The Endophyte Trichoderma asperellum M2RT4 Induces the Systemic Release of Methyl Salicylate and ( Z)-jasmone in Tomato Plant Affecting Host Location and Herbivory of Tuta absoluta. FRONTIERS IN PLANT SCIENCE 2022; 13:860309. [PMID: 35449888 PMCID: PMC9016226 DOI: 10.3389/fpls.2022.860309] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Accepted: 03/11/2022] [Indexed: 05/30/2023]
Abstract
The use of endophytic fungi has dramatically increased plant performance through the enhancement of plant protection against abiotic and biotic stressors. We previously demonstrated that the endophytic fungus Trichoderma asperellum M2RT4 improves tomato defenses against the tomato leafminer Tuta absoluta through the reduction of oviposition, leafmining, pupation, and adult emergence. However, the underlying mechanism by which the presence of this endophytic fungus within tomato host plant affects T. absoluta host selection and life-history traits is unknown. We tested the behavioral responses of T. absoluta in Y-tube olfactometer bioassays and found that females preferred non-inoculated tomato plants against those inoculated by endophytes. Additionally, T. absoluta females were not attracted to non-inoculated infested nor to inoculated-infested tomato plants. Chemical analysis revealed the emission of methyl salicylate in inoculated tomato plant and an increase in the amounts of monoterpenes emitted from non-inoculated infested plants. Additionally, we found that upon herbivory, T. asperellum M2RT4 modulates tomato plant chemistry through the production of (Z)-jasmone thus activating both salicylic and jasmonic acid defense pathways. Further, T. absoluta females were attracted to monoterpernes including α-pinene, 2-carene, and β-phellandrene but repelled by methyl salicylate. Methyl salicylate could therefore be considered as a good semiochemical-based candidate for sustainable T. absoluta management using a "push-pull" approach. However, in dose-response bioassays, females of T. absoluta did not show any preference to the four component-blend (α-pinene, 2-carene, β-phellandrene, and methyl salicylate). (Z)-jasmone-treated tomato leaflets significantly reduced the leafmining activity of the pest at the concentration of 10 ng/μL and causing the highest larval mortality rate (83%) with the shortest LT50 (1.73 days) 7 days post-treatment. T. asperellum M2RT4 effect on herbivore performance was then (Z)-jasmone-mediated. These findings expand our understanding of how the endophytic fungus T. asperellum M2RT4 could mediate chemical interactions between T. absoluta and its host plant which are potentially important for development of environmentally friendly T. absoluta management programs.
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Affiliation(s)
- Ayaovi Agbessenou
- International Centre of Insect Physiology and Ecology, Nairobi, Kenya
- Department of Zoology and Entomology, University of Pretoria, Hatfield, South Africa
| | - Komivi S. Akutse
- International Centre of Insect Physiology and Ecology, Nairobi, Kenya
| | - Abdullahi A. Yusuf
- Department of Zoology and Entomology, University of Pretoria, Hatfield, South Africa
- Forestry and Agricultural Biotechnology Institute, University of Pretoria, Hatfield, South Africa
| | - Fathiya M. Khamis
- International Centre of Insect Physiology and Ecology, Nairobi, Kenya
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Wang J, Li S, Fang Y, Zhang F, Jin ZY, Desneux N, Wang S. Enhanced and sustainable control of Myzus persicae by repellent plants in organic pepper and eggplant greenhouses. PEST MANAGEMENT SCIENCE 2022; 78:428-437. [PMID: 34658134 DOI: 10.1002/ps.6681] [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] [Received: 10/09/2021] [Accepted: 10/17/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Repellent plants (RPs), generally used to keep pests away from crops in integrated pest management, have been shown to reduce the need for synthetic insecticide sprays in various agroecosystems. However, few studies have evaluated the pest control efficiency of RPs over the entire growth period of crops. To evaluate the effect of RPs against Myzus persicae and explore the application and management modes of RPs in the field, we planted mint (Mentha haplocalyx), mung bean (Vigna radiata), celery (Apium graveolens) and coriander (Coriandrum sativum) near the ventilation openings of commercial greenhouses. RESULTS Five-month sampling results showed that mung bean and mint treatments significantly reduced M. persicae population levels over the entire growth period, whereas celery and coriander reduced aphid infestations during the main harvest period of eggplant. The four RP species showed the strongest repellence during their fast-growth periods. Mung bean and mint shortened the activity period of M. persicae in pepper by delaying the pest in reaching its peak activity. Celery and coriander reduced aphid density on eggplant during their main activity period. Mint, celery and coriander inhibited population growth in M. persicae in the laboratory, revealing the potential value of RPs in reducing M. persicae population levels in the field. CONCLUSION Mint, mung bean, celery and coriander planted near ventilation openings could be used to control M. persicae infestations in commercial greenhouses. Early planting and timely replanting of RPs is a more effective, environmentally friendly and suitable method for organic pest control compared with chemical pesticides. © 2021 Society of Chemical Industry.
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Affiliation(s)
- Jie Wang
- Forewarning and Management of Agricultural and Forestry Pest, Hubei Engineering Technology Center & College of Agriculture, Yangtze University, Jingzhou, China
- Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Shu Li
- Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Yan Fang
- Forewarning and Management of Agricultural and Forestry Pest, Hubei Engineering Technology Center & College of Agriculture, Yangtze University, Jingzhou, China
- Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Fan Zhang
- Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Zhen-Yu Jin
- Forewarning and Management of Agricultural and Forestry Pest, Hubei Engineering Technology Center & College of Agriculture, Yangtze University, Jingzhou, China
| | | | - Su Wang
- Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
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Assessment of Silicon- and Mycorrhizae- Mediated Constitutive and Induced Systemic Resistance in Rice, Oryza sativa L., against the Fall Armyworm, Spodoptera frugiperda Smith. PLANTS 2021; 10:plants10102126. [PMID: 34685935 PMCID: PMC8539287 DOI: 10.3390/plants10102126] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 09/28/2021] [Accepted: 10/01/2021] [Indexed: 11/16/2022]
Abstract
Induced resistance provides protection in plants against insect herbivores. Silicon and mycorrhizae often prime plant defenses and thereby enhance plant resistance against herbivores. In rice, Oryza sativa L., insect injury has been shown to induce resistance against future defoliators. However, it is unknown if silicon and mycorrhizae treatments in combination with insect injury result in greater induced resistance. Using the fall armyworm (FAW), Spodoptera frugiperda Smith, two experiments were conducted to investigate whether (1) silicon or mycorrhizae treatment alters resistance in rice and (2) induced systemic resistance in response to insect injury is augmented in silicon- or mycorrhizae- treated plants. In the first experiment, silicon treatment reduced FAW growth by 20% while mycorrhizae increased FAW growth by 8%. In the second experiment, insect injury induced systemic resistance, resulting in a 23% reduction in FAW larval weight gains on injured compared to uninjured plants, irrespective of treatment. Neither silicon nor mycorrhizae enhanced this systemic resistance in insect-injured plants. Furthermore, mycorrhizae resulted in the systemic increase of peroxidase (POD) and polyphenol oxidase (PPO) activities, and injury caused a slight decrease in these enzyme activities in mycorrhizae plants. Silicon treatment did not result in a stronger induction of POD and PPO activity in injured plants. Taken together, these results indicate a lack of silicon and mycorrhizae priming of plant defenses in rice. Regardless of injury, silicon reduced FAW weight gains by 36%. Based on these results, it appears silicon-mediated biomechanical rather than biochemical defenses may play a greater role in increased resistance against FAW in rice.
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In vitro and in silico approach of fungal growth inhibition by Trichoderma asperellum HbGT6-07 derived volatile organic compounds. ARAB J CHEM 2021. [DOI: 10.1016/j.arabjc.2021.103290] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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Electronic Nose Differentiation between Quercus robur Acorns Infected by Pathogenic Oomycetes Phytophthora plurivora and Pythium intermedium. Molecules 2021; 26:molecules26175272. [PMID: 34500705 PMCID: PMC8434229 DOI: 10.3390/molecules26175272] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 08/19/2021] [Accepted: 08/27/2021] [Indexed: 12/16/2022] Open
Abstract
Identification of the presence of pathogenic oomycetes in infected plant material proved possible using an electronic nose, giving hope for a tool to assist nurseries and quarantine services. Previously, species of Phytophthora plurivora and Pythium intermedium have been successfully distinguished in germinated acorns of English oak Quercus robur L. Chemical compound analyses performed by HS-SPME/GC-MS (Headspace Solid-Phase Microextraction/Gas Chromatography-Mass Spectrometry) revealed the presence of volatile antifungal molecules produced by oak seedlings belonging to terpenes and alkanes. Compounds characteristic only of Phytophthora plurivora or Pythium intermedium were also found. Methylcarveol occurred when germinated acorns were infected with Pythium, while neophytadiene (isomer 2 and 3) occurred only when infected with Phytophthora. Moreover, isopentanol was found in acorns infected with Phytophthora, while in control, isopentyl vinyl ether was not observed anywhere else. Among the numerous volatile compounds, isopentanol only occurred in acorns infected with Phytophthora and methylcarveol in acorns infected with Pythium.
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Ayaz M, Ali Q, Farzand A, Khan AR, Ling H, Gao X. Nematicidal Volatiles from Bacillus atrophaeus GBSC56 Promote Growth and Stimulate Induced Systemic Resistance in Tomato against Meloidogyne incognita. Int J Mol Sci 2021; 22:5049. [PMID: 34068779 PMCID: PMC8126219 DOI: 10.3390/ijms22095049] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2021] [Revised: 05/06/2021] [Accepted: 05/07/2021] [Indexed: 12/17/2022] Open
Abstract
Bacillus volatiles to control plant nematodes is a topic of great interest among researchers due to its safe and environmentally friendly nature. Bacillus strain GBSC56 isolated from the Tibet region of China showed high nematicidal activity against M. incognita, with 90% mortality as compared with control in a partition plate experiment. Pure volatiles produced by GBSC56 were identified through gas chromatography and mass spectrometry (GC-MS). Among 10 volatile organic compounds (VOCs), 3 volatiles, i.e., dimethyl disulfide (DMDS), methyl isovalerate (MIV), and 2-undecanone (2-UD) showed strong nematicidal activity with a mortality rate of 87%, 83%, and 80%, respectively, against M. incognita. The VOCs induced severe oxidative stress in nematodes, which caused rapid death. Moreover, in the presence of volatiles, the activity of antioxidant enzymes, i.e., SOD, CAT, POD, and APX, was observed to be enhanced in M. incognita-infested roots, which might reduce the adverse effect of oxidative stress-induced after infection. Moreover, genes responsible for plant growth promotion SlCKX1, SlIAA1, and Exp18 showed an upsurge in expression, while AC01 was downregulated in infested plants. Furthermore, the defense-related genes (PR1, PR5, and SlLOX1) in infested tomato plants were upregulated after treatment with MIV and 2-UD. These findings suggest that GBSC56 possesses excellent biocontrol potential against M. incognita. Furthermore, the study provides new insight into the mechanism by which GBSC56 nematicidal volatiles regulate antioxidant enzymes, the key genes involved in plant growth promotion, and the defense mechanism M. incognita-infested tomato plants use to efficiently manage root-knot disease.
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Affiliation(s)
- Muhammad Ayaz
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (M.A.); (Q.A.); (A.R.K.)
| | - Qurban Ali
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (M.A.); (Q.A.); (A.R.K.)
| | - Ayaz Farzand
- Department of Plant Pathology, University of Agriculture, Faisalabad P.O. Box 38040, Pakistan;
| | - Abdur Rashid Khan
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (M.A.); (Q.A.); (A.R.K.)
| | - Hongli Ling
- Shandong Vland Biotechnology Co., Ltd., Binzhou 251700, China;
| | - Xuewen Gao
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (M.A.); (Q.A.); (A.R.K.)
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