1
|
Sgadari F, Vaglica A, Porrello A, Schicchi R, Bruno M. Chemical composition of the essential oils of three taxa of Cytisus growing wild in Sicily, Italy. Nat Prod Res 2023:1-8. [PMID: 37882439 DOI: 10.1080/14786419.2023.2273917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Accepted: 10/15/2023] [Indexed: 10/27/2023]
Abstract
The genus Cytisus is native Canary Islands, Europe to Mediterranean, Morocco, Algeria and Tunisia and several species of the genus are used in folk medicine of different countries. In this work the chemical composition of the essential oils from the aerial parts of three taxa of this genus growing wild in Sicily, Cytisus scoparius (L.) Link, C. villosus Pourr. and C. aeolicus Guss., has been investigated. No one report has been published on the Sicilian accession of the former two species, and, at the best of our knowledge, C. aeolicus is devoid of any chemical investigation. Cytisus scoparius and C. aeolicus essential oils have similar composition characterised by the occurrence of almost the same amount of compounds belonging to "other" class (59.5-52.0%) and carbonyl compounds (22.2-19.6%). Cytisus villosus showed a different composition with hydrocarbons as the main class (52.0%), totally absent in the other two species.
Collapse
Affiliation(s)
- Francesco Sgadari
- Department of Agricultural, Food and Forest Sciences (SAAF), Università degli Studi di Palermo, Palermo, Italy
| | - Alessandro Vaglica
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Palermo, Italy
| | - Antonella Porrello
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Palermo, Italy
| | - Rosario Schicchi
- Department of Agricultural, Food and Forest Sciences (SAAF), Università degli Studi di Palermo, Palermo, Italy
| | - Maurizio Bruno
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Palermo, Italy
- Centro Interdipartimentale di Ricerca "Riutilizzo bio-based degli scarti da matrici agroalimentari" (RIVIVE), Università di Palermo, Palermo, Italy
| |
Collapse
|
2
|
El Jaddaoui I, Rangel DEN, Bennett JW. Fungal volatiles have physiological properties. Fungal Biol 2023; 127:1231-1240. [PMID: 37495313 DOI: 10.1016/j.funbio.2023.03.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Accepted: 03/29/2023] [Indexed: 04/04/2023]
Abstract
All fungi emit mixtures of volatile organic compounds (VOCs) during growth. The qualitative and quantitative composition of these volatile mixtures vary with the species of fungus, the age of the fungus, and the environmental parameters attending growth. In nature, fungal VOCs are found as combinations of alcohols, aldehydes, acids, ethers, esters, ketones, terpenes, thiols and their derivatives, and are responsible for the characteristic odors associated with molds, mushrooms and yeasts. One of the single most common fungal volatiles is 1-octen-3-ol also known as "mushroom alcohol" or "matsutake alcohol." Many volatiles, including 1-octen-3-ol, serve as communication agents and display biological activity as germination inhibitors, plant growth retardants or promoters, and as semiochemicals ("infochemicals") in interactions with arthropods. Volatiles are understudied and underappreciated elements of the chemical lives of fungi. This review gives a brief introduction to fungal volatiles in hopes of raising awareness of the physiological importance of these gas phase fungal metabolites to encourage mycologists and other biologists to stop "throwing away the head space."
Collapse
Affiliation(s)
- Islam El Jaddaoui
- Department of Plant Biology, Rutgers, The State University of New Jersey, New Brunswick, NJ, USA
| | - Drauzio E N Rangel
- Universidade Tecnológica Federal do Paraná, Dois Vizinhos, Paraná, Brazil
| | - Joan Wennstrom Bennett
- Department of Plant Biology, Rutgers, The State University of New Jersey, New Brunswick, NJ, USA.
| |
Collapse
|
3
|
Cascone P, Vuts J, Birkett MA, Rasmann S, Pickett JA, Guerrieri E. Small volatile lipophilic molecules induced belowground by aphid attack elicit a defensive response in neighbouring un-infested plants. Front Plant Sci 2023; 14:1154587. [PMID: 37426972 PMCID: PMC10326905 DOI: 10.3389/fpls.2023.1154587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Accepted: 06/07/2023] [Indexed: 07/11/2023]
Abstract
In pioneering studies on plant-aphid interactions, we have observed that Vicia faba plants infested by aphids can transmit signals via the rhizosphere that induce aboveground defence in intact, neighbouring plants. The aphid parasitoid Aphidius ervi is significantly attracted towards intact broad bean plants grown in a hydroponic solution previously harbouring Acyrtosiphon pisum-infested plants. To identify the rhizosphere signal(s) possibly mediating this belowground plant-plant communication, root exudates were collected using Solid-Phase Extraction (SPE) from 10-day old A. pisum-infested and un-infested Vicia faba plants hydroponically grown. To verify the ability of these root exudates to trigger defence mechanisms against the aphids we added them to V. fabae plants grown in hydroponic solution, and tested these plants in the wind-tunnel bioassay to assess their attractiveness towards the aphids' parasitoids A. ervi. We identified three small volatile lipophilic molecules as plant defence elicitors: 1-octen-3-ol, sulcatone and sulcatol, in SPE extracts of A. pisum-infested broad bean plants. In wind tunnel assays, we recorded a significant increase in the attractiveness towards A. ervi of V. faba plants grown in hydroponic solution treated with these compounds, compared to plants grown in hydroponic treated with ethanol (control). Both 1-octen-3-ol and sulcatol have asymmetrically substituted carbon atoms at positions 3 and 2, respectively. Hence, we tested both their enantiomers alone or in mixture. We highlighted a synergistic effect on the level of attractiveness towards the parasitoid when testing the three compounds together in respect to the response recorded against them singly tested. These behavioural responses were supported by the characterization of headspace volatiles released by tested plants. These results shed new light on the mechanisms underlying plant-plant communication belowground and prompt the use of bio-derived semiochemicals for a sustainable protection of agricultural crops.
Collapse
Affiliation(s)
- Pasquale Cascone
- Institute for Sustainable Plant Protection, Consiglio Nazionale delle Ricerche, Portici, Napoli, Italy
| | - Jozsef Vuts
- Biointeractions and Crop Protection Department, Rothamsted Research, Harpenden, Hertfordshire, United Kingdom
| | - Michael A. Birkett
- Biointeractions and Crop Protection Department, Rothamsted Research, Harpenden, Hertfordshire, United Kingdom
| | - Sergio Rasmann
- Institute of Biology, University of Neuchatel, Neuchatel, Switzerland
| | - John A. Pickett
- School of Chemistry, Cardiff University, Cardiff, United Kingdom
| | - Emilio Guerrieri
- Institute for Sustainable Plant Protection, Consiglio Nazionale delle Ricerche, Portici, Napoli, Italy
- Institute for Sustainable Plant Protection, Consiglio Nazionale delle Ricerche, Torino, Italy
| |
Collapse
|
4
|
Calabrese A, Battistoni P, Ceylan S, Zeni L, Capo A, Varriale A, D’Auria S, Staiano M. An Impedimetric Biosensor for Detection of Volatile Organic Compounds in Food. Biosensors (Basel) 2023; 13:341. [PMID: 36979553 PMCID: PMC10046769 DOI: 10.3390/bios13030341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 02/23/2023] [Accepted: 03/01/2023] [Indexed: 06/18/2023]
Abstract
The demand for a wide choice of food that is safe and palatable increases every day. Consumers do not accept off-flavors that have atypical odors resulting from internal deterioration or contamination by substances alien to the food. Odor response depends on the volatile organic compounds (VOCs), and their detection can provide information about food quality. Gas chromatography/mass spectrometry is the most powerful method available for the detection of VOC. However, it is laborious, costly, and requires the presence of a trained operator. To develop a faster analytic tool, we designed a non-Faradaic impedimetric biosensor for monitoring the presence of VOCs involved in food spoilage. The biosensor is based on the use of the pig odorant-binding protein (pOBP) as the molecular recognition element. We evaluated the affinity of pOBP for three different volatile organic compounds (1-octen-3-ol, trans-2-hexen-1-ol, and hexanal) related to food spoilage. We developed an electrochemical biosensor conducting impedimetric measurements in liquid and air samples. The impedance changes allowed us to detect each VOC sample at a minimum concentration of 0.1 μM.
Collapse
Affiliation(s)
- Alessia Calabrese
- Institute of Food Science, CNR Italy, 83100 Avellino, Italy
- URT-ISA, CNR at Department of Biology, University of Naples Federico II, 80126 Napoli, Italy
- Department of Engineering, University of Campania Luigi Vanvitelli, 81031 Aversa, Italy
| | | | | | - Luigi Zeni
- Department of Engineering, University of Campania Luigi Vanvitelli, 81031 Aversa, Italy
| | - Alessandro Capo
- Institute of Food Science, CNR Italy, 83100 Avellino, Italy
- URT-ISA, CNR at Department of Biology, University of Naples Federico II, 80126 Napoli, Italy
| | - Antonio Varriale
- Institute of Food Science, CNR Italy, 83100 Avellino, Italy
- URT-ISA, CNR at Department of Biology, University of Naples Federico II, 80126 Napoli, Italy
| | - Sabato D’Auria
- Department of Biology, Agriculture, and Food Science, National Research Council of Italy (CNR-DISBA), 00185 Rome, Italy
| | - Maria Staiano
- Institute of Food Science, CNR Italy, 83100 Avellino, Italy
| |
Collapse
|
5
|
Liu WB, Li HM, Wang GR, Cao HQ, Wang B. Conserved Odorant Receptor, EcorOR4, Mediates Attraction of Mated Female Eupeodes corollae to 1-Octen-3-ol. J Agric Food Chem 2023; 71:1837-1844. [PMID: 36682010 DOI: 10.1021/acs.jafc.2c06132] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Odorant receptors (ORs) in insects are crucial for the detection of chemical signals. However, the functions of the conserved OR genes among insect species are rarely studied. In this study, we analyzed a well-conserved OR clade in Diptera insects and cloned a gene from this clade, EcorOR4, in the hoverfly Eupeodes corollae. Real-time quantitative PCR showed that EcorOR4 was highly expressed in the antennae and upregulated in the mated females, and in vitro functional characterization showed that EcorOR4 was narrowly tuned to 1-octen-3-ol. Electroantennogram assays revealed that the antennal response of mated females to 1-octen-3-ol was significantly higher than that of mated males, but no significant differences were observed between male and female virgins. Finally, a Y-tube olfactometer bioassay showed that 1-octen-3-ol is an attractant for only mated female E. corollae adults. These results demonstrate that EcorOR4 is involved in the detection of 1-octen-3-ol and that this compound may affect the host-finding and oviposition behavior in female E. corollae.
Collapse
Affiliation(s)
- Wen-Biao Liu
- College of Plant Protection, Anhui Agricultural University, Hefei 230036, Anhui, China
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Hui-Min Li
- College of Plant Protection, Anhui Agricultural University, Hefei 230036, Anhui, China
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Gui-Rong Wang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
- Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China
| | - Hai-Qun Cao
- College of Plant Protection, Anhui Agricultural University, Hefei 230036, Anhui, China
| | - Bing Wang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| |
Collapse
|
6
|
Ferreira I, Dias T, Cruz C. The Potential of Ectomycorrhizal Fungi to Modulate below and Aboveground Communities May Be Mediated by 1-Octen-3-ol. J Fungi (Basel) 2023; 9:jof9020180. [PMID: 36836295 PMCID: PMC9961352 DOI: 10.3390/jof9020180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 01/13/2023] [Accepted: 01/25/2023] [Indexed: 01/31/2023] Open
Abstract
It is known that ectomycorrhizal (ECM) fungi can modulate below and aboveground communities. They are a key part of belowground communication as they produce a vast array of metabolites, including volatile organic compounds (VOCs) such as 1-octen-3-ol. Here, we tested if the VOC 1-octen-3-ol may be involved in the ECM fungal mechanisms that modulate below and aboveground communities. For that, we conducted three in vitro assays with ECM fungi and the 1-octen-3-ol volatile to (i) explore the effects of mycelium growth of three ECM species, (ii) investigate the impact on the germination of six host Cistaceae species, and (iii) study the impact on host plant traits. The effects of 1-octen-3-ol on mycelium growth of the three ECM species depended on the dose and species: Boletus reticulatus was the most sensitive species to the low (VOC) dose, while T. leptoderma was the most tolerant. In general, the presence of the ECM fungi resulted in higher seed germination, while 1-octen-3-ol resulted in lower seed germination. The combined application of the ECM fungus and the volatile further inhibited seed germination, possibly due to the accumulation of 1-octen-3-ol above the plant species' threshold. Seed germination and plant development of Cistaceae species were influenced by ECM fungal volatiles, suggesting that 1-octen-3-ol may mediate changes in below and aboveground communities.
Collapse
|
7
|
Delcros L, Godet T, Collas S, Hervé M, Blondin B, Roland A. Identification of a Glycosylated Fraction Involved in Mushroom Off-Flavors in Grapes: Influence of Gray Rot, Powdery Mildew and Crustomyces subabruptus. Molecules 2022; 27:7306. [PMID: 36364131 PMCID: PMC9656183 DOI: 10.3390/molecules27217306] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 10/18/2022] [Accepted: 10/25/2022] [Indexed: 09/28/2023] Open
Abstract
An organoleptic defect, termed fresh mushroom off-flavor and mainly caused by the C8 compounds 1-octen-3-one, 3-octanol and 1-octen-3-ol, has been identified in wines and spirits since the 2000s. The aim of this work was to identify the presence of glycosidic precursors of these C8 compounds and to evaluate the influence of different molds on the glycosylated fractions of three grape varieties. Must samples contaminated by molds (gray rot, powdery mildew and Crustomyces subabruptus) and three levels of attack severity (from healthy to 10-15%) were studied. After a β-glycosidase treatment on Meunier and Pinot noir musts contaminated by Crustomyces subabruptus, 1-octen-3-one, 1-octen-3-ol and 3-octanol were identified by GC-MS, proving the existence of glycosidic fractions in the musts. A Pinot noir must contaminated by Crustomyces subabruptus displayed a 230% increase in the glycosylated fraction responsible for 1-octen-3-one in comparison with an uncontaminated sample. Powdery mildew did not appear to affect the levels of the studied glycosidic fractions in Chardonnay musts. Gray rot on Meunier and Pinot noir musts had opposite effects depending on glycoside type, decreasing the 1-octen-3-one fraction and increasing the 1-octen-3-ol fraction.
Collapse
Affiliation(s)
- Léa Delcros
- MHCS, 51200 Epernay, France
- Comité Champagne, 51200 Epernay, France
| | - Teddy Godet
- UMR SPO, Université de Montpellier INRAE, Institut Agro, 34060 Montpellier, France
| | | | | | - Bruno Blondin
- UMR SPO, Université de Montpellier INRAE, Institut Agro, 34060 Montpellier, France
| | - Aurélie Roland
- UMR SPO, Université de Montpellier INRAE, Institut Agro, 34060 Montpellier, France
| |
Collapse
|
8
|
Teshima T, Funai R, Nakazawa T, Ito J, Utsumi T, Kakumyan P, Mukai H, Yoshiga T, Murakami R, Nakagawa K, Honda Y, Matsui K. Coprinopsis cinerea dioxygenase is an oxygenase forming 10(S)-hydroperoxide of linoleic acid, essential for mushroom alcohol, 1-octen-3-ol synthesis. J Biol Chem 2022; 298:102507. [PMID: 36122804 PMCID: PMC9579011 DOI: 10.1016/j.jbc.2022.102507] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 09/14/2022] [Accepted: 09/15/2022] [Indexed: 11/03/2022] Open
Abstract
1-Octen-3-ol is a volatile oxylipin found ubiquitously in Basidiomycota and Ascomycota. The biosynthetic pathway forming 1-octen-3-ol from linoleic acid via the linoleic acid 10(S)-hydroperoxide was characterized 40 years ago in mushrooms, yet the enzymes involved are not identified. The dioxygenase 1 and 2 genes (Ccdox1 and Ccdox2) in the mushroom Coprinopsis cinerea contain an N-terminal cyclooxygenase-like heme peroxidase domain and a C-terminal cytochrome P450-related domain. Herein, we show that recombinant CcDOX1 is responsible for dioxygenation of linoleic acid to form the 10(S)-hydroperoxide, the first step in 1-octen-3-ol synthesis, whereas CcDOX2 conceivably forms linoleate 8-hydroperoxide. We demonstrate that knockout of the Ccdox1 gene suppressed 1-octen-3-ol synthesis, although added linoleic acid 10(S)-hydroperoxide was still efficiently converted. The P450-related domain of CcDOX1 lacks the characteristic Cys heme ligand and the evidence indicates that a second uncharacterized enzyme converts the 10(S)-hydroperoxide to 1-octen-3-ol. Additionally, we determined the gene knockout strain (ΔCcdox1) was less attractive to fruit fly larvae, while the feeding behavior of fungus gnats on ΔCcdox1 mycelia showed little difference from that on the mycelia of the wild-type strain. The proliferation of fungivorous nematodes on ΔCcdox1 mycelia was similar to or slightly worse than that on wild-type mycelia. Thus, 1-octen-3-ol seems to be an attractive compound involved in emitter-receiver ecological communication in mushrooms.
Collapse
Affiliation(s)
- Takuya Teshima
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University, Yamaguchi, 753-8515, Japan
| | - Risa Funai
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University, Yamaguchi, 753-8515, Japan
| | - Takehito Nakazawa
- Graduate School of Agriculture, Kyoto University, Oiwakecho, Kitashirakawa, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Junya Ito
- Food and Biodynamic Chemistry Laboratory, Graduate School of Agricultural Science, Tohoku University, Sendai, Miyagi, 980-8572, Japan
| | - Toshihiko Utsumi
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University, Yamaguchi, 753-8515, Japan
| | - Pattana Kakumyan
- School of Science, Mae Fah Luang University, Chiang Rai, 57100, Thailand
| | - Hiromi Mukai
- Department of Forest Entomology, Forestry and Forest Products Research Institute, Tsukuba, 305-8687, Japan
| | - Toyoshi Yoshiga
- Department of Applied Biological Sciences, Faculty of Agriculture, Saga University, Saga, 840-8502, Japan
| | - Ryutaro Murakami
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University, Yamaguchi, 753-8515, Japan
| | - Kiyotaka Nakagawa
- Food and Biodynamic Chemistry Laboratory, Graduate School of Agricultural Science, Tohoku University, Sendai, Miyagi, 980-8572, Japan
| | - Yoichi Honda
- Graduate School of Agriculture, Kyoto University, Oiwakecho, Kitashirakawa, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Kenji Matsui
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University, Yamaguchi, 753-8515, Japan.
| |
Collapse
|
9
|
Macedo GE, Vieira PDB, Rodrigues NR, Gomes KK, Rodrigues JF, Franco JL, Posser T. Effect of fungal indoor air pollutant 1-octen-3-ol on levels of reactive oxygen species and nitric oxide as well as dehydrogenases activities in drosophila melanogaster males. J Toxicol Environ Health A 2022; 85:573-585. [PMID: 35354383 DOI: 10.1080/15287394.2022.2054887] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Fungal pollution of indoor environments contributes to several allergic symptoms and represents a public health problem. It is well-established that 1-octen-3-ol, also known as mushroom alcohol, is a fungal volatile organic compound (VOC) commonly found in damp indoor spaces and responsible for the typical musty odor. Previously it was reported that exposure to 1-octen-3-ol induced inflammations and disrupted mitochondrial morphology and bioenergetic rate in Drosophila melanogaster. The aim of this study was to examine the influence of 1-octen-3-ol on dehydrogenase activity, apoptotic biomarkers, levels of nitric oxide (NO) and reactive oxygen species (ROS), as well as antioxidant enzymes activities. D. melanogaster flies were exposed to an atmosphere containing 1-octen-3-ol (2.5 or ∞l/L) for 24 hr. Data demonstrated that 1-octen-3-ol decreased dehydrogenases activity and NO levels but increased ROS levels accompanied by stimulation of glutathione-S-transferase (GST) and superoxide dismutase (SOD) activities without altering caspase 3/7 activation. These findings indicate that adverse mitochondrial activity effects following exposure of D. melanogaster to 1-octen-3-ol, a fungal VOC, may be attributed to oxidant stress. The underlying mechanisms involved in adverse consequences of indoor fungal exposure appear to be related to necrotic but not apoptotic mechanisms. The adverse consequences were sex-dependent with males displaying higher sensitivity to 1-octen-3-ol. Based upon on the fact that the fly genome shares nearly 75% of disease-related genes to human exposure to this fungus may explain the adverse human responses to mold especially for males.
Collapse
Affiliation(s)
- Giulianna Echeverria Macedo
- Oxidative Stress and Cell Signaling Research Group, Centro Interdisciplinar em Biotecnologia - CIPBIOTEC, Universidade Federal do Pampa, Campus São Gabriel, São Gabriel, Brazil
| | - Patrícia de Brum Vieira
- Oxidative Stress and Cell Signaling Research Group, Centro Interdisciplinar em Biotecnologia - CIPBIOTEC, Universidade Federal do Pampa, Campus São Gabriel, São Gabriel, Brazil
| | - Nathane Rosa Rodrigues
- Oxidative Stress and Cell Signaling Research Group, Centro Interdisciplinar em Biotecnologia - CIPBIOTEC, Universidade Federal do Pampa, Campus São Gabriel, São Gabriel, Brazil
- Departamento de Bioquímica e Biologia Molecular, CCNE, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - Karen Kich Gomes
- Oxidative Stress and Cell Signaling Research Group, Centro Interdisciplinar em Biotecnologia - CIPBIOTEC, Universidade Federal do Pampa, Campus São Gabriel, São Gabriel, Brazil
| | - Jéssica Ferreira Rodrigues
- Oxidative Stress and Cell Signaling Research Group, Centro Interdisciplinar em Biotecnologia - CIPBIOTEC, Universidade Federal do Pampa, Campus São Gabriel, São Gabriel, Brazil
| | - Jeferson Luis Franco
- Oxidative Stress and Cell Signaling Research Group, Centro Interdisciplinar em Biotecnologia - CIPBIOTEC, Universidade Federal do Pampa, Campus São Gabriel, São Gabriel, Brazil
- Departamento de Bioquímica e Biologia Molecular, CCNE, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - Thaís Posser
- Oxidative Stress and Cell Signaling Research Group, Centro Interdisciplinar em Biotecnologia - CIPBIOTEC, Universidade Federal do Pampa, Campus São Gabriel, São Gabriel, Brazil
| |
Collapse
|
10
|
Ntoruru JM, Ohnishi T, Katsumata F, Koeduka T, Matsui K. 1-Octen-3-ol is formed from its primeveroside after mechanical wounding of soybean leaves. Plant Mol Biol 2022; 109:551-561. [PMID: 34837579 DOI: 10.1007/s11103-021-01226-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Accepted: 11/19/2021] [Indexed: 06/13/2023]
Abstract
KEY MESSAGE Hydrolysis of 1-octen-3-yl β-primeveroside implemented by a system with high structure-specificity is accountable for the rapid formation of 1-octen-3-ol from soybean leaves after mechanical wounding. 1-Octen-3-ol is a volatile compound ubiquitous in fungi; however, a subset of plant species also has the ability to form 1-octen-3-ol. Owing to its volatile nature, it has been anticipated that 1-octen-3-ol is associated with the effort of the emitter to control the behavior of the surrounding organisms; however, its ecological significance and the enzymes involved in its biosynthesis have not been fully elucidated, particularly in plants. We previously found that soybean (Glycine max) seeds contain 1-octen-3-yl β-primeveroside (pri). To elucidate the physiological significance and the biosynthesis of 1-octen-3-ol in plants, changes in the amount of 1-octen-3-yl pri during development of soybean plants was examined. A high 1-octen-3-yl pri level was found in young developing green organs, such as young leaves and sepals. Treatment of soybean leaves with methyl jasmonates resulted in a significant increase in the amount of 1-octen-3-yl pri; suggesting its involvement in defense responses. Although 1-octen-3-ol was below the detection limit in intact soybean leaves, mechanical damage to the leaves caused rapid hydrolysis of almost all 1-octen-3-yl pri to liberate volatile 1-octen-3-ol. Under the same conditions, the other glycosides, including isoflavone glycoside and linalool diglycoside, were hardly hydrolyzed. Therefore, the enzyme system to liberate aglycone from glycosides in soybean leaves should have strict substrate specificity. 1-Octen-3-yl pri might function as a storage form of volatile 1-octen-3-ol for immediate response against stresses accompanying tissue wounding.
Collapse
Affiliation(s)
- Juliano Mwenda Ntoruru
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University, Yamaguchi, 753-8515, Japan
| | - Toshiyuki Ohnishi
- College of Agriculture, Academic Institute, Shizuoka University, Shizuoka, 422-8529, Japan
- Research Institute of Green Science and Technology, Shizuoka University, Shizuoka, 422-8529, Japan
| | - Fumiya Katsumata
- Department of Agriculture, Graduate School of Integrated Science and Technology, Shizuoka University, Shizuoka, 422-8529, Japan
| | - Takao Koeduka
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University, Yamaguchi, 753-8515, Japan
| | - Kenji Matsui
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University, Yamaguchi, 753-8515, Japan.
| |
Collapse
|
11
|
Pennerman KK, Yin G, Bennett JW. Eight-carbon volatiles: prominent fungal and plant interaction compounds. J Exp Bot 2022; 73:487-497. [PMID: 34727164 DOI: 10.1093/jxb/erab438] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Accepted: 09/24/2021] [Indexed: 06/13/2023]
Abstract
Signaling via volatile organic compounds (VOCs) has historically been studied mostly by entomologists; however, botanists and mycologists are increasingly aware of the physiological potential of chemical communication in the gas phase. Most research to date focuses on the observed effects of VOCs on different organisms such as differential growth or metabolite production. However, with the increased interest in volatile signaling, more researchers are investigating the molecular mechanisms for these effects. Eight-carbon VOCs are among the most prevalent and best-studied fungal volatiles. Therefore, this review emphasizes examples of eight-carbon VOCs affecting plants and fungi. These compounds display different effects that include growth suppression in both plants and fungi, induction of defensive behaviors such as accumulation of mycotoxins, phytohormone signaling cascades, and the inhibition of spore and seed germination. Application of '-omics' and other next-generation sequencing techniques is poised to decipher the mechanistic basis of volatiles in plant-fungal communication.
Collapse
Affiliation(s)
- Kayla K Pennerman
- Joint Institute for Food Safety and Applied Nutrition, University of Maryland, College Park, MD 20742, USA
- United States Department of Agriculture, Toxicology and Mycotoxin Research Unit, Athens, GA 30605, USA
| | - Guohua Yin
- United States Department of Agriculture, Mycotoxin Prevention and Applied Microbiology Research Unit, National Center for Agricultural Utilization Research, Peoria, IL 61604, USA
- Department of Plant Biology, Rutgers University, The State University of New Jersey, New Brunswick, NJ 08901, USA
| | - Joan W Bennett
- Department of Plant Biology, Rutgers University, The State University of New Jersey, New Brunswick, NJ 08901, USA
| |
Collapse
|
12
|
Song GC, Jeon J, Choi HK, Sim H, Kim S, Ryu C. Bacterial type III effector-induced plant C8 volatiles elicit antibacterial immunity in heterospecific neighbouring plants via airborne signalling. Plant Cell Environ 2022; 45:236-247. [PMID: 34708407 PMCID: PMC9298316 DOI: 10.1111/pce.14209] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 10/08/2021] [Accepted: 10/15/2021] [Indexed: 05/10/2023]
Abstract
Upon sensing attack by pathogens and insect herbivores, plants release complex mixtures of volatile compounds. Here, we show that the infection of lima bean (Phaseolus lunatus L.) plants with the non-host bacterial pathogen Pseudomonas syringae pv. tomato led to the production of microbe-induced plant volatiles (MIPVs). Surprisingly, the bacterial type III secretion system, which injects effector proteins directly into the plant cytosol to subvert host functions, was found to prime both intra- and inter-specific defense responses in neighbouring wild tobacco (Nicotiana benthamiana) plants. Screening of each of 16 effectors using the Pseudomonas fluorescens effector-to-host analyser revealed that an effector, HopP1, was responsible for immune activation in receiver tobacco plants. Further study demonstrated that 1-octen-3-ol, 3-octanone and 3-octanol are novel MIPVs emitted by the lima bean plant in a HopP1-dependent manner. Exposure to synthetic 1-octen-3-ol activated immunity in tobacco plants against a virulent pathogen Pseudomonas syringae pv. tabaci. Our results show for the first time that a bacterial type III effector can trigger the emission of C8 plant volatiles that mediate defense priming via plant-plant interactions. These results provide novel insights into the role of airborne chemicals in bacterial pathogen-induced inter-specific plant-plant interactions.
Collapse
Affiliation(s)
- Geun Cheol Song
- Molecular Phytobacteriology LaboratoryInfectious Disease Research Center, KRIBBDaejeonSouth Korea
| | - Je‐Seung Jeon
- Molecular Phytobacteriology LaboratoryInfectious Disease Research Center, KRIBBDaejeonSouth Korea
| | - Hye Kyung Choi
- Molecular Phytobacteriology LaboratoryInfectious Disease Research Center, KRIBBDaejeonSouth Korea
| | - Hee‐Jung Sim
- Environmental Chemistry Research GroupKorea Institute of Toxicology (KIT)JinjuSouth Korea
| | - Sang‐Gyu Kim
- Department of Biological SciencesKorea Advanced Institute of Science and TechnologyDaejeonSouth Korea
| | - Choong‐Min Ryu
- Molecular Phytobacteriology LaboratoryInfectious Disease Research Center, KRIBBDaejeonSouth Korea
- Biosystems and Bioengineering ProgramUniversity of Science and Technology (UST)DaejeonSouth Korea
| |
Collapse
|
13
|
Abstract
Many volatile organic compounds (VOCs) associated with industry cause adverse health effects, but less is known about the physiological effects of biologically produced volatiles. This review focuses on the VOCs emitted by fungi, which often have characteristic moldy or "mushroomy" odors. One of the most common fungal VOCs, 1-octen-3-ol, is a semiochemical for many arthropod species and also serves as a developmental hormone for several fungal groups. Other fungal VOCs are flavor components of foods and spirits or are assayed in indirect methods for detecting the presence of mold in stored agricultural produce and water-damaged buildings. Fungal VOCs function as antibiotics as well as defense and plant-growth-promoting agents and have been implicated in a controversial medical condition known as sick building syndrome. In this review, we draw attention to the ubiquity, diversity, and toxicological significance of fungal VOCs as well as some of their ecological roles.
Collapse
Affiliation(s)
- Arati A Inamdar
- Department of Pathology, RWJ Barnabas Health, Livingston, New Jersey 07039, USA;
| | - Shannon Morath
- Department of Plant Biology, Rutgers, The State University of New Jersey, New Brunswick, New Jersey 08901, USA; ,
| | - Joan W Bennett
- Department of Plant Biology, Rutgers, The State University of New Jersey, New Brunswick, New Jersey 08901, USA; ,
| |
Collapse
|
14
|
Cui K, Yang S, Zou N, He L, Zhang T, Liu F, Mu W. Residual behavior of the potential grain fumigant 1-octen-3-ol in wheat during fumigation and ventilation processes. Pest Manag Sci 2021; 77:2933-2938. [PMID: 33619815 DOI: 10.1002/ps.6329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Revised: 12/10/2020] [Accepted: 02/23/2021] [Indexed: 06/12/2023]
Abstract
BACKGROUND Our previous works indicated that 1-octen-3-ol has promising potential as an alternative grain fumigant. However, aside from its insecticidal efficacy, the presence of 1-octen-3-ol residues in grains must be investigated to assess its food safety profile. RESULTS A convenient and sensitive QuEChERS based GC-MS/MS method was developed to detect residues of 1-octen-3-ol in wheat. The sample pretreatment procedures were optimized. The developed method showed good linearity (R2 = 0.9999) and negligible matrix effects. The limit of detection (LOD) and limit of quantification (LOQ) for 1-octen-3-ol were 0.003 and 0.01 mg kg-1 , respectively. Recoveries at spiked concentration levels of 0.01, 0.5, 10, 100 and 200 mg kg-1 ranged from 90.8% to 112.4%, with relative standard deviations (RSDs, n = 5) ranged from 1.2 to 7.5%. In the fumigation process during wheat storage, there were positive correlations between the accumulation rate and fumigation concentration as well as between the accumulation amounts and fumigation time. In the ventilation process, temperature significantly affected the dissipation dynamics of 1-octen-3-ol in wheat, and the t1/2 values at ventilation temperatures of 30 and 5 °C for 0.1 μL mL-1 were 0.16 and 21.80 days, respectively, representing a 136-fold difference. CONCLUSION Preservers can regulate the ventilation temperature to achieve different goals, with either a long duration period for long-term storage or rapid dissipation for quick food consumption. This study provides guidance on the reasonable usage of 1-octen-3-ol on wheat and other stored grains. © 2021 Society of Chemical Industry.
Collapse
Affiliation(s)
- Kaidi Cui
- Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, College of Plant Protection, Shandong Agricultural University, Tai'an, China
| | - Song Yang
- Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, College of Plant Protection, Shandong Agricultural University, Tai'an, China
| | - Nan Zou
- Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, College of Plant Protection, Shandong Agricultural University, Tai'an, China
| | - Leiming He
- College of Plant Protection, Henan Agricultural University, Zhengzhou, China
| | - Tao Zhang
- Institute of Grain Storage and Logistics, Academy of National Food and Strategic Reserves Administration, Beijing, China
| | - Feng Liu
- Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, College of Plant Protection, Shandong Agricultural University, Tai'an, China
| | - Wei Mu
- Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, College of Plant Protection, Shandong Agricultural University, Tai'an, China
| |
Collapse
|
15
|
Jin Y, Cui H, Yuan X, Liu L, Liu X, Wang Y, Ding J, Xiang H, Zhang X, Liu J, Li H, Zhao G, Wen J. Identification of the main aroma compounds in Chinese local chicken high-quality meat. Food Chem 2021; 359:129930. [PMID: 33951611 DOI: 10.1016/j.foodchem.2021.129930] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 04/18/2021] [Accepted: 04/19/2021] [Indexed: 02/07/2023]
Abstract
Chicken meat flavor has deteriorated with the increase of meat production. With the aim to identify the main aroma compounds in chicken meat, 972 Chinese local chickens are used to analyze the volatile organic compounds (VOCs) in meat by gas chromatography-mass spectrometry analysis. The results revealed that various VOCs present in the meat belong to aldehyde, alcohol and alkane classes. Total aldehyde content is highest in breeds significantly negatively correlated with the content of the other two classes, and their flavor can be distinguished by E-nose. Also, 9 common VOCs were shared by different breeds. Furthermore, principal component analysis identified hexanal and 1-octen-3-ol as the major VOCs according to the three classes, 9 common VOCs, or all VOCs as a whole in each breed, respectively. This study identified the main aroma VOCs in chicken meat, which could serve as a basis for breeding chickens with improved meat flavor.
Collapse
Affiliation(s)
- Yuxi Jin
- Chinese Academy of Agricultural Science, State Key Laboratory of Animal Nutrition, Beijing 100193, China
| | - Huanxian Cui
- Chinese Academy of Agricultural Science, State Key Laboratory of Animal Nutrition, Beijing 100193, China
| | - Xiaoya Yuan
- Chinese Academy of Agricultural Science, State Key Laboratory of Animal Nutrition, Beijing 100193, China
| | - Lu Liu
- Chinese Academy of Agricultural Science, State Key Laboratory of Animal Nutrition, Beijing 100193, China
| | - Xiaojing Liu
- Chinese Academy of Agricultural Science, State Key Laboratory of Animal Nutrition, Beijing 100193, China
| | - Yongli Wang
- Chinese Academy of Agricultural Science, State Key Laboratory of Animal Nutrition, Beijing 100193, China
| | - Jiqiang Ding
- Chinese Academy of Agricultural Science, State Key Laboratory of Animal Nutrition, Beijing 100193, China
| | - Hai Xiang
- Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding, Foshan University, Guangdong 528225, China
| | - Xinxiao Zhang
- Jiangsu Academy of Agricultural Sciences, Jiangsu 210014, China
| | - Jianfeng Liu
- China Agricultural University, Beijing 100193, China
| | - Hua Li
- Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding, Foshan University, Guangdong 528225, China
| | - Guiping Zhao
- Chinese Academy of Agricultural Science, State Key Laboratory of Animal Nutrition, Beijing 100193, China
| | - Jie Wen
- Chinese Academy of Agricultural Science, State Key Laboratory of Animal Nutrition, Beijing 100193, China.
| |
Collapse
|
16
|
Miranda TG, Alves RJM, de Souza RF, Maia JGS, Figueiredo PLB, Tavares-Martins ACC. Volatile concentrate from the neotropical moss Neckeropsis undulata (Hedw.) Reichardt, existing in the brazilian Amazon. BMC Chem 2021; 15:7. [PMID: 33494804 PMCID: PMC7836487 DOI: 10.1186/s13065-021-00736-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 01/16/2021] [Indexed: 11/22/2022] Open
Abstract
Background Many natural compounds have been identified and synthesized by the advancement of bryophytes phytochemistry studies. This work aimed to report the composition of Neckeropsis undulata (Hedw.) Reichardt moss volatiles, sampled in the Combú Island, Belém city, Pará state, Brazil. The volatile concentrate of N. undulata was obtained by a simultaneous distillation-extraction micro-system, analyzed by GC and GC-MS, and reported for the first time. Results Ten compounds were identified in the volatile concentrate, corresponding to 91.6% of the total, being 1-octen-3-ol (35.7%), α-muurolol (21.4%), naphthalene (11.3%), and n-hexanal (10.0 %) the main constituents. Most of the constituents of the N. undulata volatile concentrate have been previously identified in other mosses, and liverworts spread wide in the world. Conclusions 1-Octen-3-ol, n-hexanal, 2-ethylhexanol, isoamyl propionate, and octan-3-one are already known metabolic products obtained from enzymatic oxidation of polyunsaturated fatty acids, belonging to the large family of minor oxygenated compounds known as oxylipins. The knowledge of the composition of volatiles from moss N. undulata could contribute to the Neckeraceae species’ chemotaxonomy.
Collapse
Affiliation(s)
- Thyago G Miranda
- Programa de Pós-Graduação em Biodiversidade e Biotecnologia, Universidade Federal do Pará, Belém, PA, 66075-110, Brazil
| | - Raynon Joel M Alves
- Programa de Pós-Graduação em Biodiversidade e Biotecnologia, Universidade Federal do Pará, Belém, PA, 66075-110, Brazil
| | - Ronilson F de Souza
- Departamento de Ciências Naturais, Universidade do Estado do Pará, Belém, PA, 66050-540, Brazil
| | - José Guilherme S Maia
- Programa de Pós-Graduação em Química, Universidade Federal do Maranhão, São Luís, MA, 64080-040, Brazil
| | - Pablo Luis B Figueiredo
- Departamento de Ciências Naturais, Universidade do Estado do Pará, Belém, PA, 66050-540, Brazil.
| | - Ana Cláudia C Tavares-Martins
- Programa de Pós-Graduação em Biodiversidade e Biotecnologia, Universidade Federal do Pará, Belém, PA, 66075-110, Brazil.,Departamento de Ciências Naturais, Universidade do Estado do Pará, Belém, PA, 66050-540, Brazil
| |
Collapse
|
17
|
Yang L, Agramonte N, Linthicum KJ, Bloomquist JR. A Survey of Chemoreceptive Responses on Different Mosquito Appendages. J Med Entomol 2021; 58:475-479. [PMID: 32740665 DOI: 10.1093/jme/tjaa154] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Indexed: 06/11/2023]
Abstract
Research on the functions of insect chemoreceptors have primarily focused on antennae (olfactory receptors) and mouthparts (gustatory receptors). However, chemoreceptive sensilla are also present on other appendages, such as the leg tarsi and the anterior wing margin, and their specific roles in chemoreception and mosquito behavior remain largely unknown. In this study, electrophysiological analyses in an electroantennogram recording format were performed on Aedes aegypti (L., Diptera: Culicidae) antennae, mouthparts, tarsi, and wings during exposure to a variety of insect repellent and attractant compounds. The results provide evidence that the tarsi and wings can sense chemicals in a gaseous form, and that the odors produce differing responses on different appendages. The most consistent and strongest response occurred when exposed to triethylamine (TEA). Antennae and mouthparts showed nearly identical responses pattern to all tested compounds, and their rank orders of effectiveness were similar to those of fore- and mid-leg tarsi. Hindleg tarsi only responded to TEA, indicating that the hind legs are not as chemoreceptive. Wings responded to a range of odorants, but with a different rank order and voltage amplitude. Insights gleaned into the function of these appendages in insect chemoreception are discussed.
Collapse
Affiliation(s)
- Liu Yang
- Neurotoxicology Laboratory, Department of Entomology and Nematology, Emerging Pathogens Institute, University of Florida, Gainesville, FL
| | - Natasha Agramonte
- Neurotoxicology Laboratory, Department of Entomology and Nematology, Emerging Pathogens Institute, University of Florida, Gainesville, FL
| | - Kenneth J Linthicum
- USDA, ARS, Center for Medical, Agricultural and Veterinary Entomology, Gainesville, FL
| | - Jeffrey R Bloomquist
- Neurotoxicology Laboratory, Department of Entomology and Nematology, Emerging Pathogens Institute, University of Florida, Gainesville, FL
| |
Collapse
|
18
|
Xu L, Tang KY, Chen XF, Tao Y, Jiang HB, Wang JJ. Comparative transcriptomic analysis reveals female-biased olfactory genes potentially involved in plant volatile-mediated oviposition behavior of Bactrocera dorsalis. BMC Genomics 2021; 22:25. [PMID: 33407105 DOI: 10.1186/s12864-020-07325-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 12/14/2020] [Indexed: 01/10/2023] Open
Abstract
Background Olfactory systems take on important tasks to distinguish salient information from a complex olfactory environment, such as locating hosts, mating, aggression, selecting oviposition sites, and avoiding predators. The olfactory system of an adult insect consists of two pairs of main olfactory appendages on the head, the antennae, and the palps, which are covered with sensilla. Benzothiazole and 1-octen-3-ol could elicit oviposition behavior in gravid B. dorsalis are regarded as oviposition stimulants. However, the mechanism for how B. dorsalis percepts benzothiazole and 1-octen-3-ol still remains unknown. Results We conducted a comparative analysis of the antennal transcriptomes in different genders of B. dorsalis using Illumina RNA sequencing (RNA-seq). We identified a total of 1571 differentially expressed genes (DEGs) among the two sexes, including 450 female-biased genes and 1121 male-biased genes. Among these DEGs, we screened out 24 olfaction-related genes and validated them by qRT-PCR. The expression patterns of these genes in different body parts were further determined. In addition, we detected the expression profiles of the screened female-biased chemosensory genes in virgin and mated female flies. Furthermore, the oviposition stimulants-induced expression profilings were used to identify chemosensory genes potentially responsible for benzothiazole and 1-octen-3-ol perception in this fly. Conclusions The results from this study provided fundamental data of chemosensory DEGs in the B. dorsalis antenna. The odorant exposure assays we employed lay a solid foundation for the further research regarding the molecular mechanism of benzothiazole and 1-octen-3-ol mediated oviposition behavior in B. dorsalis. Supplementary Information The online version contains supplementary material available at 10.1186/s12864-020-07325-z.
Collapse
|
19
|
Abstract
The volatile composition of plants is of great importance because of its wide applications in aromatherapy, pharmaceuticals, perfumes and chemical ecology. This article describes the volatile fraction of Clerodendrum infortunatum L. leaves extracted by partitioning the hydro-distillate using hexane. A fatty acid derivative, 1-octen-3-ol is found as the main component in the volatile fraction ranging from 48.7 to 63.7%. Other compounds found with significant amounts were trans-3-hexenol, 1-hexanol, (3E)-hexen-1-ol acetate, 3-octanone, phenylacetaldehyde, linalool and methyl salicylate. Irregular terpenoid compounds like (E)-β-damascenone, (E)-β-ionone and isophorone are also present in the volatile part of C. infortunatum. The chemical composition of the volatile fraction was identified by spectroscopic analysis, GC and GC-MS.
Collapse
Affiliation(s)
- Naresh Babu Gera
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, Kolkata, India.,National Institute of Pharmaceutical Education and Research - Kolkata, Kolkata, India
| | - Priya Darshani
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, Kolkata, India.,National Institute of Pharmaceutical Education and Research - Kolkata, Kolkata, India
| | - Thasmeer P P
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, Kolkata, India.,National Institute of Pharmaceutical Education and Research - Kolkata, Kolkata, India
| | - Pragadheesh V S
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, Kolkata, India
| |
Collapse
|
20
|
Baars JJP, Scholtmeijer K, Sonnenberg ASM, van Peer A. Critical Factors Involved in Primordia Building in Agaricus bisporus: A Review. Molecules 2020; 25:molecules25132984. [PMID: 32610638 PMCID: PMC7411738 DOI: 10.3390/molecules25132984] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 06/24/2020] [Accepted: 06/25/2020] [Indexed: 11/19/2022] Open
Abstract
The button mushroom Agaricus bisporus is an economically important crop worldwide. Many aspects of its cultivation are well known, except for the precise biological triggers for its fructification. By and large, for most basidiomycete species, nutrient availability, light and a drop in temperature are critical factors for fructification. A. bisporus deviates from this pattern in the sense that it does not require light for fructification. Furthermore its fructification seems to be inhibited by a self-generated factor which needs to be removed by microorganisms in order to initiate fruiting. This review explores what is known about the morphogenesis of fruiting initiation in A. bisporus, the microflora, the self-inhibitors for fruiting initiation and transcription factors involved. This information is subsequently contrasted with an overall model of the regulatory system involved in the initiation of the formation of primordia in basidiomycetes. The comparison reveals a number of the blank spots in our understanding of the fruiting process in A. bisporus.
Collapse
|
21
|
Bray D, Isberg E, Hillbur Y, Ignell R. Influence of light and kairomone baiting systems on trap collections of biting midges in southern Sweden. J Vector Ecol 2020; 45:45-56. [PMID: 32492275 DOI: 10.1111/jvec.12372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Accepted: 02/03/2020] [Indexed: 06/11/2023]
Abstract
Effective surveillance is essential for protecting livestock from Culicoides biting midges and the viruses they transmit. The objective of this study was to determine how the baiting system used in traps (UV, incandescent light, incandescent light with CO2 , and incandescent light with CO2 and 1-octen-3-ol) influences estimates of midge population abundance, parity, and diel activity. This was achieved through a standardized trapping protocol conducted in three habitats in Sweden. UV light traps caught the most Culicoides species and more C. obsoletus complex females than incandescent light traps. Traps baited with CO2 plus 1-octen-3-ol caught more female C. impunctatus than incandescent light traps. No consistent effect of bait type was found on C. obsoletus parity rate, as estimated from the proportion of midges with presence or absence of pigmentation. Midge activity, as reflected by trap catches, peaked between -3 h and +3 h relative to sunset, with UV traps catching significantly more female C. obsoletus complex and C. impunctatus at and after sunset than before sunset. We conclude that baiting system can influence biting midge collections, even using identical traps. Effective surveillance may require more than one bait type and kairomones to attract species that do not feed exclusively on cattle.
Collapse
Affiliation(s)
- Daniel Bray
- Swedish University of Agricultural Sciences, Department of Plant Protection Biology, Unit of Chemical Ecology, Box 102, 230 53, Alnarp, Sweden
- Agriculture, Health and Environment Department, Natural Resources Institute, University of Greenwich, Kent, ME4 4TB, UK
| | - Elin Isberg
- Swedish University of Agricultural Sciences, Department of Plant Protection Biology, Unit of Chemical Ecology, Box 102, 230 53, Alnarp, Sweden
| | - Ylva Hillbur
- Swedish University of Agricultural Sciences, Department of Plant Protection Biology, Unit of Chemical Ecology, Box 102, 230 53, Alnarp, Sweden
| | - Rickard Ignell
- Swedish University of Agricultural Sciences, Department of Plant Protection Biology, Unit of Chemical Ecology, Box 102, 230 53, Alnarp, Sweden
| |
Collapse
|
22
|
Caboni P, Scano P, Sanchez S, Garcia-Barreda S, Corrias F, Marco P. Multi-platform metabolomic approach to discriminate ripening markers of black truffles (Tuber melanosporum). Food Chem 2020; 319:126573. [PMID: 32169760 DOI: 10.1016/j.foodchem.2020.126573] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Revised: 03/04/2020] [Accepted: 03/05/2020] [Indexed: 11/16/2022]
Abstract
Black truffle is characterized by a black ascocarp and white veins. This hypogeous fruit body is known for its aroma. Understanding metabolic variation during ripening can shed light on truffle biology. In this work, the comprehensive polar metabolome and the volatile organic compounds of T. melanosporum were studied at different ripening stages by means of a metabolomic approach using GC-MS. Multivariate statistical data analysis indicated that the metabolic profile changed during ripening and that the metabolites that mostly discriminated truffles in the early ripening stages belonged to the classes of carbohydrates, while free fatty acids and amino acids, among which precursors of VOCs, characterized the late stages of ripening. Principal component analysis of the volatilome indicated that dimethylsulfide and dimethyldisulfide characterized most of the samples collected in December-January, while 1-octen-3-ol samples collected in February-March.
Collapse
Affiliation(s)
- Pierluigi Caboni
- Department of Life and Environmental Sciences, University of Cagliari, via Ospedale 72, 09124 Cagliari, Italy.
| | - Paola Scano
- Department of Life and Environmental Sciences, University of Cagliari, via Ospedale 72, 09124 Cagliari, Italy
| | - Sergio Sanchez
- Forest Resources Department, Agrifood Research and Technology Centre of Aragon (CITA), Agrifood Institute of Aragón-IA2 (CITA-Zaragoza University), Av. Montañana 930, 50059 Zaragoza, Spain
| | - Sergi Garcia-Barreda
- Forest Resources Department, Agrifood Research and Technology Centre of Aragon (CITA), Agrifood Institute of Aragón-IA2 (CITA-Zaragoza University), Av. Montañana 930, 50059 Zaragoza, Spain
| | - Francesco Corrias
- Department of Life and Environmental Sciences, University of Cagliari, via Ospedale 72, 09124 Cagliari, Italy
| | - Pedro Marco
- Forest Resources Department, Agrifood Research and Technology Centre of Aragon (CITA), Agrifood Institute of Aragón-IA2 (CITA-Zaragoza University), Av. Montañana 930, 50059 Zaragoza, Spain
| |
Collapse
|
23
|
Yang L, Norris EJ, Jiang S, Bernier UR, Linthicum KJ, Bloomquist JR. Reduced effectiveness of repellents in a pyrethroid-resistant strain of Aedes aegypti (Diptera: culicidae) and its correlation with olfactory sensitivity. Pest Manag Sci 2020; 76:118-124. [PMID: 31338960 DOI: 10.1002/ps.5562] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 07/03/2019] [Accepted: 07/21/2019] [Indexed: 06/10/2023]
Abstract
BACKGROUND The mosquito, Aedes aegypti (Diptera: Culicidae), is a vector of dengue fever, zika, chikungunya, and yellow fever viruses, and in many areas possesses significant levels of resistance to pyrethroids. Behavioral performance was assessed in 15, 30, and 60 min exposures in a high throughput vapor phase spatial repellency assay to three contact repellent standards: N,N-diethyl-3-methylbenzamide (DEET), ethyl 3-[acetyl(butyl)amino] propanoate (IR3535), and 2-undecanone, as well as pyrethrum extract, transfluthrin, and metofluthrin in susceptible (Orlando) and a pyrethroid-resistant Puerto Rico strain of Aedes aegypti. Additionally, electroantennographic studies were used to investigate the antennal sensitivities to these compounds in both strains. RESULTS Resistance was found to all tested insect repellents in the Puerto Rico strain of Ae. aegypti. Resistance ratios at the different time points were about 2 for DEET, 3 for 2-undecanone, and 12 for IR3535. Resistance was also observed to pyrethrum extract (∼9-fold), transfluthrin (∼5-fold), and metofluthrin (∼48-fold) in repellent behavioral response. Electrophysiological analysis found decreased antennal sensitivity to all repellents tested, consistent with their behavioral effects. CONCLUSION The reduced sensitivity to these repellents may represent a fitness cost arising from the kdr mutation present in Puerto Rico Aedes aegypti. This work highlights the need for understanding collateral effects from the evolution of pesticide resistance in mosquitoes, and the importance of finding alternative strategies to control resistance development. © 2019 Society of Chemical Industry.
Collapse
Affiliation(s)
- Liu Yang
- Emerging Pathogens Institute, Department of Entomology and Nematology, University of Florida, Gainesville, FL, USA
| | - Edmund J Norris
- Emerging Pathogens Institute, Department of Entomology and Nematology, University of Florida, Gainesville, FL, USA
| | - Shiyao Jiang
- Emerging Pathogens Institute, Department of Entomology and Nematology, University of Florida, Gainesville, FL, USA
| | - Ulrich R Bernier
- USDA, ARS, Center for Medical, Agricultural and Veterinary Entomology, Gainesville, FL, USA
| | - Kenneth J Linthicum
- USDA, ARS, Center for Medical, Agricultural and Veterinary Entomology, Gainesville, FL, USA
| | - Jeffrey R Bloomquist
- Emerging Pathogens Institute, Department of Entomology and Nematology, University of Florida, Gainesville, FL, USA
| |
Collapse
|
24
|
Yang L, Hu XP, Allan SA, Alborn HT, Bernier UR. Electrophysiological and Behavioral Responses of the Kudzu Bug, Megacopta cribraria (Hemiptera: Plataspidae), to Volatile Compounds from Kudzu and Soybean Plants. J Agric Food Chem 2019; 67:4177-4183. [PMID: 30920823 DOI: 10.1021/acs.jafc.8b06765] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The kudzu bug, Megacopta cribraria, is a key pest of soybean in the United States. Electrophysiological and behavioral responses of adult M. cribraria to kudzu and soybean volatile compounds were examined to identify semiochemicals used for host location. Headspace volatiles collected from undamaged potted plants were analyzed by gas chromatography with electroantennographic detection (GC-EAD). Subsequently, six GC-EAD-active compounds were identified by gas chromatography-mass spectrometry (GC-MS). These six compounds, along with some previously reported insect attractants, were selected for electroantennogram (EAG) assays. The four chemicals that elicited the strongest EAG responses, 1-octen-3-ol, nonanal, benzaldehyde, and ocimene, were selected for evaluation in olfactometer bioassays. Both benzaldehyde and 1-octen-3-ol exhibited dose-dependent responses at higher concentration. Our results provide insight into host location compounds used by adult M. cribraria. These results may be evaluated in future field tests and ultimately useful to develop a semiochemical-based monitoring technique and integrated pest management program for M. cribraria.
Collapse
Affiliation(s)
- Liu Yang
- Department of Entomology and Plant Pathology , Auburn University , Auburn , Alabama 36849 , United States
| | - Xing Ping Hu
- Department of Entomology and Plant Pathology , Auburn University , Auburn , Alabama 36849 , United States
| | - Sandra A Allan
- United States Department of Agriculture-Agricultural Research Service, Center for Medical, Agricultural, and Veterinary, Entomology , Gainesville , Florida 32608 , United States
| | - Hans T Alborn
- United States Department of Agriculture-Agricultural Research Service, Center for Medical, Agricultural, and Veterinary, Entomology , Gainesville , Florida 32608 , United States
| | - Ulrich R Bernier
- United States Department of Agriculture-Agricultural Research Service, Office of National Programs , Beltsville , Maryland 20705 , United States
| |
Collapse
|
25
|
Chen H, Yang R, Chen J, Luo Q, Cui X, Yan X, Gerwick WH. 1-Octen-3-ol, a self-stimulating oxylipin messenger, can prime and induce defense of marine alga. BMC Plant Biol 2019; 19:37. [PMID: 30669983 PMCID: PMC6341616 DOI: 10.1186/s12870-019-1642-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Accepted: 01/09/2019] [Indexed: 05/20/2023]
Abstract
BACKGROUND Short chain oxylipins in plants as the main volatile organic carbon have been speculated to playing an important role for plant innate immunity, however, not yet intensively studied and far away established as the fully recognized algae defense signals. RESULTS The production of 1-octen-3-ol is self-amplified via the fatty acid-oxylipin metabolic cycle through positive feedback loop. Production of 1-octen-3-ol may act as a messenger that induces P. haitanensis to be in a "primed" state and ready for defense by upregulating the synthesis of methyl jasmonic acid, indole-3-acetic acid, and gibberellin A3. Production of these oxylipins also adjust the redox state in cells, resulting in host defense activation. CONCLUSIONS We provide the first demonstration that 1-octen-3-ol from P. haitanensis, can act as a self-stimulating community messenger. The multiple effects of 1-octen-3-ol may explain why P. haitanensis, a very ancient lineage within plant kingdom, thrives in the niche of intertidal zones.
Collapse
Affiliation(s)
- Haimin Chen
- Key Laboratory of Marine Biotechnology of Zhejiang Province, Ningbo University, Ningbo, Zhejiang, 315211 China
| | - Rui Yang
- Key Laboratory of Marine Biotechnology of Zhejiang Province, Ningbo University, Ningbo, Zhejiang, 315211 China
| | - Juanjuan Chen
- Key Laboratory of Marine Biotechnology of Zhejiang Province, Ningbo University, Ningbo, Zhejiang, 315211 China
| | - Qijun Luo
- Key Laboratory of Marine Biotechnology of Zhejiang Province, Ningbo University, Ningbo, Zhejiang, 315211 China
| | - Xiaoshan Cui
- Key Laboratory of Marine Biotechnology of Zhejiang Province, Ningbo University, Ningbo, Zhejiang, 315211 China
| | - Xiaojun Yan
- Key Laboratory of Marine Biotechnology of Zhejiang Province, Ningbo University, Ningbo, Zhejiang, 315211 China
| | - William H. Gerwick
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California, La Jolla, San Diego, CA 92093 USA
| |
Collapse
|
26
|
Matsui K, Takemoto H, Koeduka T, Ohnishi T. 1-Octen-3-ol Is Formed from Its Glycoside during Processing of Soybean [ Glycine max (L.) Merr.] Seeds. J Agric Food Chem 2018; 66:7409-7416. [PMID: 29943986 DOI: 10.1021/acs.jafc.8b01950] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Soaking and maceration of dry soybean seeds induce the formation of aliphatic volatile compounds that impact the flavor properties of food products prepared from soybean. Most aliphatic volatile compounds are formed through oxygenation of unsaturated fatty acids by lipoxygenases; however, lipoxygenases are not responsible for the formation of 1-octen-3-ol. 1-Octen-3-ol in soybean products is in general an off-flavor compound; thus, a procedure to manage its formation is required. In this study, we show that the formation of 1-octen-3-ol after hydration of soybean seed powder is independent of oxygen, suggesting that 1-octen-3-ol is not formed de novo from unsaturated fatty acids but instead from its derivative. When crude methanol extract of soybean seeds was reacted with β-glycosidases, 1-octen-3-ol was rather liberated from its glycoside. We purified the parent glycoside from soybean seeds and confirmed it as ( R)-1-octen-3-yl β-primeveroside [( R)-1-octen-3-yl 6- O-β-d-xylopyranosyl-β-d-glucopyranoside]. Green immature soybean fruits (pericarp and seeds) contain a high amount of 1-octen-3-yl β-primeveroside. Its amount decreases after hydration of dry soybean powder. The results indicate that management of 1-octen-3-ol levels in soybean products requires a different strategy than that applied to off-flavor compounds formed de novo.
Collapse
Affiliation(s)
- Kenji Matsui
- Graduate School of Sciences and Technology for Innovation, Faculty of Agriculture , Yamaguchi University , Yoshida 1677-1 , Yamaguchi , Yamaguchi 753-8515 , Japan
| | | | - Takao Koeduka
- Graduate School of Sciences and Technology for Innovation, Faculty of Agriculture , Yamaguchi University , Yoshida 1677-1 , Yamaguchi , Yamaguchi 753-8515 , Japan
| | | |
Collapse
|
27
|
Ouedraogo L, den Otter CJ. Comparison of single cell sensitivities to acetone, 1-octen-3-ol and 3-methylphenol in the riverine tsetse species Glossina fuscipes fuscipes and G. palpalis palpalis. J Insect Physiol 2018; 107:144-151. [PMID: 29559304 DOI: 10.1016/j.jinsphys.2018.03.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Revised: 03/09/2018] [Accepted: 03/12/2018] [Indexed: 06/08/2023]
Abstract
Action potentials from individual cells were recorded from antennae (funiculi) of living tsetse flies, Glossina p. palpalis and Glossina f. fuscipes using a "surface-contact" recording technique. Stimuli were vapours of 1-octen-3-ol, acetone and 3-methylphenol. Of the 101 and 128 olfactory cells tested for their sensitivity to odour stimuli in G. p. palpalis and G. f. fuscipes, respectively, the majority (83 and 77%) were activated by more than one chemical. The numbers of these "generalist" cells were 20 and 15% higher in females than in males. Response intensity increased with increasing odour dose. Temporal patterns of excitation were phasic-tonic and showed cells with relatively rapid cessation of spike activity after the end of stimulation and cells which continued firing for several seconds or even minutes after stimulation. Inhibition by odours only occurred in a minority of cells and was dose-dependent. For each of the three substances the excitatory response was significantly higher in G. f. fuscipes than in G. p. palpalis, whereas no significant differences between inhibitory responses were found. In G. f. fuscipes each stimulus evoked equal excitatory responses. In G. p. palpalis, however, acetone induced significantly higher responses than 1-octen-3-ol and 3-methylphenol. Response intensities to each of the three chemicals did not differ between male and female G. p. palpalis, whereas in G. f. fuscipes 1-octen-3-ol evoked significantly higher responses in males. Possible mechanisms of receptor cell odour coding and behavioural effects of the various cell type activities are discussed.
Collapse
Affiliation(s)
- Lamini Ouedraogo
- Laboratoire de Physiologie Animale, Unité de Formation et de la Recherche en Sciences de la Vie et de la Terre (UFR/SVT), Universite Ouaga I Pr Joseph KI-ZERBO, Burkina Faso.
| | - C J den Otter
- FRES, Rijksstraatweg 377, 9752 CH Haren, The Netherlands.
| |
Collapse
|
28
|
Wallingford AK, Cha DH, Loeb GM. Evaluating a push-pull strategy for management of Drosophila suzukii Matsumura in red raspberry. Pest Manag Sci 2018; 74:120-125. [PMID: 28714131 DOI: 10.1002/ps.4666] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Revised: 05/25/2017] [Accepted: 07/08/2017] [Indexed: 06/07/2023]
Abstract
BACKGROUND Drosophila suzukii Matsumura is a serious pest of small fruits that lays its eggs in growing fruit. Current management strategies rely on an unsustainable schedule of foliar applications of chemical insecticides. Alternative approaches to suppressing oviposition are under investigation, such as attract-and-kill and the use of oviposition deterrents. Here, we evaluated two behavioral control approaches in combination as a push-pull strategy using laboratory and field assays. RESULTS In laboratory caged assays, both an attractive mass trapping device (pull) and an oviposition deterrent (push: 1-octen-3-ol) reduced oviposition by D. suzukii, and the combination of the two (push-pull) resulted in significantly greater reduction than either treatment alone. In field experiments, oviposition reduction was observed in fruit from plots treated with oviposition deterrent (push) or a combination of mass trapping devices and deterrent (push-pull) compared with fruit from control plots. However, oviposition in plots with mass trapping devices (pull) was higher than observed in all other treatments. Additionally, the protection provided by the deterrent in push plots extended to the entire plot rather than just in fruit closest to deterrent dispensers. CONCLUSION Push-pull treatments negatively affected D. suzukii infestation in both laboratory and field experiments. The reduction in oviposition observed in laboratory experiments was based on the additive effect of push and pull components acting on a finite population, while the reduction observed in field experiments appeared to be mainly based on the effect of pull components. We discuss potential underlying reasons for the discrepancy results and suggest potential improvements. © 2017 Society of Chemical Industry.
Collapse
Affiliation(s)
- Anna K Wallingford
- Cornell University, New York Agricultural Experiment Station, Geneva, NY, USA
| | - Dong H Cha
- USDA-ARS, US Pacific Basin Agricultural Research Center, Hilo, HI, USA
| | - Gregory M Loeb
- Cornell University, New York Agricultural Experiment Station, Geneva, NY, USA
| |
Collapse
|
29
|
Wallingford AK, Cha DH, Linn CE, Wolfin MS, Loeb GM. Robust Manipulations of Pest Insect Behavior Using Repellents and Practical Application for Integrated Pest Management. Environ Entomol 2017; 46:1041-1050. [PMID: 28981656 DOI: 10.1093/ee/nvx125] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Indexed: 06/07/2023]
Abstract
In agricultural settings, examples of effective control strategies using repellent chemicals in integrated pest management (IPM) are relatively scarce compared to those using attractants. This may be partly due to a poor understanding of how repellents affect insect behavior once they are deployed. Here we attempt to identify potential hallmarks of repellent stimuli that are robust enough for practical use in the field. We explore the literature for success stories using repellents in IPM and we investigate the mechanisms of repellency for two chemical oviposition deterrents for controlling Drosophila suzukii Matsumura, a serious pest of small fruit crops. Drosophila suzukii causes injury by laying her eggs in ripening fruit and resulting larvae make fruit unmarketable. In caged choice tests, reduced oviposition was observed in red raspberry fruit treated with volatile 1-octen-3-ol and geosmin at two initial concentrations (10% and 1%) compared to untreated controls. We used video monitoring to observe fly behavior in these caged choice tests and investigate the mode of action for deterrence through the entire behavioral repertoire leading to oviposition. We observed fewer visitors and more time elapsed before flies first landed on 1-octen-3-ol-treated fruits than control fruits and concluded that this odor primarily inhibits behaviors that occur before D. suzukii comes in contact with a potential oviposition substrate (precontact). We observed some qualitative differences in precontact behavior of flies around geosmin-treated fruits; however, we concluded that this odor primarily inhibits behaviors that occur after D. suzukii comes in contact with treated fruits (postcontact). Field trials found reduced oviposition in red raspberry treated with 1-octen-3-ol and a combination of 1-octen-3-ol and geosmin, but no effect of geosmin alone. Recommendations for further study of repellents for practical use in the field are discussed.
Collapse
Affiliation(s)
- Anna K Wallingford
- Department of Entomology, Cornell University, 630 W. North St., Geneva, NY 14456
| | - Dong H Cha
- USDA-ARS, US Pacific Basin Agricultural Research Center, Hilo, HI 96720
| | - Charles E Linn
- Department of Entomology, Cornell University, 630 W. North St., Geneva, NY 14456
| | - Michael S Wolfin
- Department of Entomology, Cornell University, 630 W. North St., Geneva, NY 14456
| | - Gregory M Loeb
- Department of Entomology, Cornell University, 630 W. North St., Geneva, NY 14456
| |
Collapse
|
30
|
Xiong C, Li Q, Li S, Chen C, Chen Z, Huang W. In vitro Antimicrobial Activities and Mechanism of 1-Octen-3-ol against Food-related Bacteria and Pathogenic Fungi. J Oleo Sci 2017; 66:1041-1049. [PMID: 28794307 DOI: 10.5650/jos.ess16196] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
1-Octen-3-ol, known as mushroom alcohol, is a natural product extracted from fungi and plants. Its antimicrobial activities against five common food-related bacteria and two pathogenic fungi were evaluated in this paper, including Staphylococcus aureus, Bacillus subtilis, Staphylococcus epidermidis, Escherichia coli, Pseudomonas aeruginosa, Fusarium tricinctum and Fusarium oxysporum. The results showed that 1-octen-3-ol had a strong antibacterial activity against the tested bacteria, especially against Gram-positive bacteria, and it can also inhibit fungal growth and spore germination. The minimum inhibitory concentrations (MICs) for Gram-positive bacteria and Gram-negative bacteria were 1.0 and 2.0 mg/mL, respectively. The minimum bactericidal concentrations (MBCs) for Gram-positive bacteria and Gram-negative bacteria were 4.0 and 8.0 mg/mL, respectively. The completely inhibitory concentrations for fungal growth and spore germination were 8.0 and 2.0 mg/ml, respectively. Cell constituents' leakage and scanning electron microscope assays indicated that 1-octen-3-ol changed the permeability of the cell membrane. Discrepant antimicrobial activity between 1-octen-3-ol and 1-octen-3-one indicated that hydroxyl may play a decisive role in antimicrobial activity. It is suggested that 1-octen-3-ol, with attractive mushroom aroma and antimicrobial activity, has potential applications in control of pathogens.
Collapse
Affiliation(s)
- Chuan Xiong
- College of Life Science, Sichuan University.,Biotechnology and Nuclear Technology Research Institute, Sichuan Academy of Agricultural Sciences
| | - Qiang Li
- College of Life Science, Sichuan University.,Biotechnology and Nuclear Technology Research Institute, Sichuan Academy of Agricultural Sciences
| | - Shuhong Li
- Biotechnology & Germplasm Resources Institute, Yunnan Academy of Agricultural Sciences
| | - Cheng Chen
- Institute of plant protection, Sichuan Academy of Agricultural Sciences
| | - Zuqin Chen
- College of Life Science, Sichuan University
| | - Wenli Huang
- Biotechnology and Nuclear Technology Research Institute, Sichuan Academy of Agricultural Sciences
| |
Collapse
|
31
|
Wallingford AK, Connelly HL, Dore Brind'Amour G, Boucher MT, Mafra-Neto A, Loeb GM. Field Evaluation of an Oviposition Deterrent for Management of Spotted-Wing Drosophila, Drosophila suzukii, and Potential Nontarget Effects. J Econ Entomol 2016; 109:1779-1784. [PMID: 27247303 DOI: 10.1093/jee/tow116] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Accepted: 05/05/2016] [Indexed: 06/05/2023]
Abstract
Spotted-wing drosophila, Drosophila suzukii Matsumura (Diptera: Drosophilidae), is a polyphagous, invasive pest of small fruits. Current management relies heavily on chemical insecticides, and an effective oviposition deterrent could contribute to alternative management approaches that reduce the need for these chemical insecticides. A novel deployment method for repelling Drosophila suzukii, thereby reducing D. suzukii oviposition in fall-bearing red raspberry, was evaluated in the field. Infestations occurring within 4 d after deployment were significantly lower in 2-m-long plots (Rubus idaeus 'Caroline') treated with the repellent (20% 1-octen-3-ol in specialized pheromone and lure application technology [SPLAT]) compared to control plots (blank SPLAT). Repellent-treated plots had roughly 28.8 and 49.5% fewer offspring reared per gram of fruit than control plots in two experiments, respectively. Nontarget effects were also evaluated in 2-m plot experiments as well as 5- by 5-m plot experiments. There were no differences in the number of parasitic hymenoptera trapped on yellow sticky cards hung in repellent compared to control plots. While there were no differences in the number of visits to raspberry flowers observed by honey bees in repellent versus control plots, the number of visits by bumble bees was greater in repellent plots compared to control plots. Challenges regarding evaporation rates and potential uses for repellents in an integrated pest management program for the control of D. suzukii are discussed.
Collapse
Affiliation(s)
- Anna K Wallingford
- Cornell University, New York Agricultural Experiment Station, 630 W. North St., Geneva, NY 14456 (; ; ; ; )
| | - Heather L Connelly
- Cornell University, New York Agricultural Experiment Station, 630 W. North St., Geneva, NY 14456 (; ; ; ; )
| | - Gabrielle Dore Brind'Amour
- Cornell University, New York Agricultural Experiment Station, 630 W. North St., Geneva, NY 14456 (; ; ; ; )
| | - Matthew T Boucher
- Cornell University, New York Agricultural Experiment Station, 630 W. North St., Geneva, NY 14456 (; ; ; ; )
| | | | - Greg M Loeb
- Cornell University, New York Agricultural Experiment Station, 630 W. North St., Geneva, NY 14456 (; ; ; ; )
| |
Collapse
|
32
|
Unelius CR, Suckling DM, Brown RL, Jósvai JK, El-Sayed AM. Combining odours isolated from phylogenetically diverse sources yields a better lure for yellow jackets. Pest Manag Sci 2016; 72:760-769. [PMID: 26017013 DOI: 10.1002/ps.4050] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2014] [Revised: 05/11/2015] [Accepted: 05/22/2015] [Indexed: 06/04/2023]
Abstract
BACKGROUND Invasive wasps have major impacts on bird populations and other biodiversity in New Zealand beech forests, and new solutions are needed for their management. Baits were combined from four phylogenetically diverse sources (protein and carbohydrate) to improve attraction to a level that could be used as the basis for more powerful attract-and-kill systems. Many compounds from honey, scale insect honeydew, fermenting brown sugar and green-lipped mussels were highly attractive and, when combined, outcompeted known attractants. RESULTS The equivolumetric lure (equal parts of 3-methylbut-1-yl acetate, 2-ethyl-1-butanol, 1-octen-3-ol, 3-octanone, methyl phenylacetate and heptyl butanoate), gave a 5-10-fold improvement over the known attractant, octyl butanoate, and other previously patented lures. An economically optimised lure of the same compounds, but in a ratio of 2:1.6:1:1:2:2.4, was equally attractive as the equal-ratio lure. Pilot mass trapping attempts with this latter lure revealed that >400 wasps trap(-1) day(-1) could be caught at the peak of the season. CONCLUSION The new lures are comprised of compounds from animals, plants and fungi, thus targeting the omnivorous behaviour of these wasps.
Collapse
Affiliation(s)
- C Rikard Unelius
- The New Zealand Institute for Plant & Food Research Ltd, Canterbury Agriculture and Science Centre, Christchurch, New Zealand
- School of Natural Sciences, Linnaeus University, Kalmar, Sweden
| | - D Maxwell Suckling
- The New Zealand Institute for Plant & Food Research Ltd, Canterbury Agriculture and Science Centre, Christchurch, New Zealand
- School of Biological Sciences, University of Auckland, Auckland, New Zealand
| | - Robert L Brown
- The New Zealand Institute for Plant & Food Research Ltd, Canterbury Agriculture and Science Centre, Christchurch, New Zealand
- School of Biological Sciences, University of Auckland, Auckland, New Zealand
| | - Julia K Jósvai
- Plant Protection Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Budapest, Hungary
| | - Ashraf M El-Sayed
- The New Zealand Institute for Plant & Food Research Ltd, Canterbury Agriculture and Science Centre, Christchurch, New Zealand
| |
Collapse
|
33
|
Wallingford AK, Hesler SP, Cha DH, Loeb GM. Behavioral response of spotted-wing drosophila, Drosophila suzukii Matsumura, to aversive odors and a potential oviposition deterrent in the field. Pest Manag Sci 2016; 72:701-6. [PMID: 25973596 DOI: 10.1002/ps.4040] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2015] [Revised: 04/30/2015] [Accepted: 05/11/2015] [Indexed: 05/10/2023]
Abstract
BACKGROUND Drosophilia suzukii Matsumura is an invasive pest insect that lays its eggs in the fruit of several commercially grown crops. An effective oviposition deterrent could contribute to its management. Repellant odors were evaluated in the laboratory and in the field. RESULTS Geosmin and 1-octen-3-ol were found to be aversive to seven-day-old female D. suzukii at concentrations of 10(-1) and 10(-2) in laboratory choice tests. Field experiments found that fewer eggs were observed in fruit on the day of harvest and fewer adult D. suzukii were reared from fruit associated with 1-octen-3-ol odors than control fruit in cultivated red raspberry. CONCLUSION Geosmin and 1-octen-3-ol induce aversive behaviors in Drosophila suzukii and are potential oviposition deterrents for its management in fruit crops.
Collapse
Affiliation(s)
- Anna K Wallingford
- Cornell University, New York Agricultural Experiment Station 630 W. North St, Geneva, NY, USA
| | - Stephen P Hesler
- Cornell University, New York Agricultural Experiment Station 630 W. North St, Geneva, NY, USA
| | - Dong H Cha
- Cornell University, New York Agricultural Experiment Station 630 W. North St, Geneva, NY, USA
- Yakima Agricultural Research Laboratory, USDA-ARS, Wapato, WA, USA
| | - Gregory M Loeb
- Cornell University, New York Agricultural Experiment Station 630 W. North St, Geneva, NY, USA
| |
Collapse
|
34
|
Guarino S, Colazza S, Peri E, Bue PL, Germanà MP, Kuznetsova T, Gindin G, Soroker V. Behaviour-modifying compounds for management of the red palm weevil (Rhynchophorus ferrugineus Oliver). Pest Manag Sci 2015; 71:1605-1610. [PMID: 25523649 DOI: 10.1002/ps.3966] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2014] [Revised: 12/13/2014] [Accepted: 12/13/2014] [Indexed: 06/04/2023]
Abstract
BACKGROUND Populations of red palm weevil (RPW), a severe pest of palms in Mediterranean countries, might be limited by semiochemical-based behaviour-disrupting methods. We evaluated the effects of electroantennogram (EAG)-active plant volatiles on the behaviour of RPWs from Italy and Israel. In field experiments, α-pinene, citronellol, geraniol, citral and 1-octen-3-ol were tested for their ability to disrupt attraction to pheromone-kairomone and molasses baited traps. Those that were found to be disruptive in the field were evaluated in a laboratory choice bioassay in individual cages for their effect on RPW female feeding and oviposition. RESULTS Field experiments showed reduced captures in traps loaded with geraniol (-57%), 1-octen-3-ol (-50%) or α-pinene (-45% to -60%); captures in citronellol- or citral-loaded traps did not differ from control. In laboratory experiments, 1-octen-3-ol was the most potent behaviour-modifying compound, eliciting a significant/marginally significant reduction in both feeding and oviposition at the lowest dose tested in both populations. Geraniol generally caused a strong reduction in feeding and oviposition at each dose tested (Israel), or at the highest dose (Italy). α-Pinene caused some reduction in feeding activity at the highest dose tested (Italy), but no consistent repellency (Israel). CONCLUSION Field and laboratory data suggest the potential for the use of 1-octen-3-ol, geraniol and α-pinene for RPW population management.
Collapse
Affiliation(s)
- Salvatore Guarino
- Dipartimento di Scienze Agrarie e Forestali, Università degli Studi di Palermo, Palermo, Italy
- Istituto per la Protezione Sostenibile delle Piante (IPSP), Sesto Fiorentino, Florence, Italy
| | - Stefano Colazza
- Dipartimento di Scienze Agrarie e Forestali, Università degli Studi di Palermo, Palermo, Italy
| | - Ezio Peri
- Dipartimento di Scienze Agrarie e Forestali, Università degli Studi di Palermo, Palermo, Italy
| | - Paolo Lo Bue
- Dipartimento di Scienze Agrarie e Forestali, Università degli Studi di Palermo, Palermo, Italy
| | - Maria Pia Germanà
- Dipartimento di Scienze Agrarie e Forestali, Università degli Studi di Palermo, Palermo, Italy
| | | | - Galina Gindin
- Volcani Centre, Agricultural Research Organisation, Bet Dagan, Israel
| | - Victoria Soroker
- Volcani Centre, Agricultural Research Organisation, Bet Dagan, Israel
| |
Collapse
|
35
|
Yanagawa A, Imai T, Akino T, Toh Y, Yoshimura T. Olfactory Cues from Pathogenic Fungus Affect the Direction of Motion of Termites, Coptotermes formosanus. J Chem Ecol 2015; 41:1118-26. [PMID: 26563202 PMCID: PMC4675792 DOI: 10.1007/s10886-015-0649-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2015] [Revised: 07/26/2015] [Accepted: 10/26/2015] [Indexed: 12/04/2022]
Abstract
Formosan subterranean termites, Coptotermes formosanus, tend to avoid pathogen odors when tested in Y-tube olfactometers, but approach and groom exposed nestmates to remove pathogens from their cuticle and maintain a healthy population. To better understand their differential reaction to pathogens and their odors, the relationship between odor cues and direction of motion was examined with the fungus Isaria fumosorosea K3 strain. The results indicate that nestmate odor was strongly attractive only in tests where fungal odors were present in both branches of the olfactometer. Termites generally avoid fungal odors when offered a choice without fungal odor. We also tested termite aversion to 3-octanone and 1-octen-3-ol, major surface chemical compounds of I. fumosorosea K3, and estimated the total mass of these compounds present on the conidial surface by direct extraction method. The total quantity of these chemicals on the surface of fungal conidia was estimated to be approximately 0.01 ng per 107 conidia. This study demonstrates a context dependent behavioral change in termites in response to the odors of pathogenic fungi.
Collapse
Affiliation(s)
- Aya Yanagawa
- Research Institute for Sustainable Humanosphere, Kyoto University, Uji, 611-0011, Japan.
| | - Tomoya Imai
- Research Institute for Sustainable Humanosphere, Kyoto University, Uji, 611-0011, Japan
| | - Toshiharu Akino
- Laboratory of Applied Entomology, Kyoto Institute of Technology, Ukyo-ku, Kyoto, 616-8354, Japan
| | - Yoshihiro Toh
- Department of Biology, Faculty of Science, Kyushu University, Higashi-ku, Fukuoka, 812-8581, Japan
| | - Tsuyoshi Yoshimura
- Research Institute for Sustainable Humanosphere, Kyoto University, Uji, 611-0011, Japan
| |
Collapse
|
36
|
Hung R, Lee S, Bennett JW. The effects of low concentrations of the enantiomers of mushroom alcohol ( 1-octen-3-ol) on Arabidopsis thaliana.. Mycology 2014; 5:73-80. [PMID: 24999439 PMCID: PMC4066924 DOI: 10.1080/21501203.2014.902401] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2013] [Accepted: 02/25/2014] [Indexed: 01/12/2023] Open
Abstract
"Mushroom alcohol," or 1-octen-3-ol, is a common fungal volatile organic compound (VOC) that has been studied for its flavor properties, its effects on fungal spore germination, mushroom development, and as a signaling agent for insects. Far less is known about its effects on plants. We exposed Arabidopsis thaliana seeds, under conditions conducive to germination, to high (10 and 100 mg/1) and low concentrations (1, 2, and 3 mg/1) of racemic, S, and R forms of 1-octen-3-ol for 3 days. In addition, 1-, 2-, 3-, and 4-week-old A.thaliana plants also were exposed to 1 mg/1 of the compounds for the same period of time. Seedling formation was retarded with all tested levels of exposure to 1-octen-3-ol for both enantiomers and the racemer, while 95% of unexposed control seeds germinated to seedling within 3 days. There was a dose-dependent response in the reduction of seedling formation between 1 mg/1 and 3 mg/1 of exposure. When exposed seeds were removed from the VOC, nearly all resumed germination. Young plants exposed to 1 mg/1 of the R and S enantiomers of 1-octen-3-ol exhibited a mild inhibition of growth and chlorophyll production at 2 and 3 weeks but not at 4 weeks.
Collapse
Affiliation(s)
- Richard Hung
- Department of Plant Biology and Pathology, Rutgers, The State University of New Jersey, 59 Dudley Rd., New Brunswick, 08901, NJ, USA
| | - Samantha Lee
- Department of Plant Biology and Pathology, Rutgers, The State University of New Jersey, 59 Dudley Rd., New Brunswick, 08901, NJ, USA
| | - Joan W. Bennett
- Department of Plant Biology and Pathology, Rutgers, The State University of New Jersey, 59 Dudley Rd., New Brunswick, 08901, NJ, USA
| |
Collapse
|
37
|
Grant AJ, Muskavitch MAT, O’Connell RJ. Malaria infection does not affect the sensitivity of peripheral receptor neurons in Anopheles stephensi. Parasit Vectors 2013; 6:134. [PMID: 23642231 PMCID: PMC3659000 DOI: 10.1186/1756-3305-6-134] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2012] [Accepted: 04/23/2013] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND Mosquitoes transmit many important diseases including malaria, dengue and yellow fever. Disease transmission from one vertebrate host to another depends on repeated blood feedings by single mosquitoes. In order for the mosquito to acquire the blood that it needs to complete oogenesis, the insect must locate a suitable host. Olfactory cues (including carbon dioxide) released by the host and detected by the mosquito are the primary signals that vector insects use for host location. Previous studies have suggested that the physiological status - including bacterial, fungal, viral and Plasmodium infections - can modulate aspects of behavior in haematophagous insects. METHODS Standard electrophysiological techniques were used to record extracellular responses from the receptor neurons located in sensilla found on the maxillary palps of the insects. The recording microelectrode was inserted through the cuticle at the base of an individual sensillum and the extracellular electrical signals obtained from the three neurons within the sensillum were recorded. Stimulations consisted of 2 s pulses of the desired concentrations of CO(2) or dosages of 1-octen-3-ol. RESULTS Accordingly, we were interested in determining whether Plasmodium infection affects the sensitivity of those peripheral olfactory sensors that are involved in host-seeking in mosquitoes. Our studies indicate that infection of female Anopheles stephensi with Plasmodium berghei does not alter the response characteristics of the neurons innervating the maxillary palp sensilla that respond to the attractants carbon dioxide and 1-octen-3-ol. Although the response characteristics of the peripheral sensory neurons are not affected by infection status, we found that the age of the mosquito alone does affect the threshold of sensitivity of these neurons to carbon dioxide. The proportion of older insects (21-30 d post-emergence) that responds to 150 ppm carbon dioxide is higher than the proportion that responds among younger insects (1-10 d post-emergence). CONCLUSIONS Anopheles stephensi infected with Plasmodium berghei exhibit sensitivities to stimulation with carbon dioxide and 1-octen-3-ol similar to those of uninfected mosquitoes. However, the age of the infected or uninfected mosquito does affect the threshold of sensitivity of these neurons to carbon dioxide.
Collapse
Affiliation(s)
- Alan J Grant
- Department of Immunology and Infectious Diseases, Harvard School of Public Health, Harvard University, 665 Huntington Avenue, Boston, Massachusetts 02115, USA
| | - Marc A T Muskavitch
- Department of Immunology and Infectious Diseases, Harvard School of Public Health, Harvard University, 665 Huntington Avenue, Boston, Massachusetts 02115, USA
- Biology Department, Boston College, 140 Commonwealth Avenue, Chestnut Hill, Massachusetts, 02467, USA
| | - Robert J O’Connell
- University of Massachusetts Medical School, Worcester, Massachusetts, 01505, USA
| |
Collapse
|
38
|
Splivallo R, Valdez N, Kirchhoff N, Ona MC, Schmidt JP, Feussner I, Karlovsky P. Intraspecific genotypic variability determines concentrations of key truffle volatiles. New Phytol 2012; 194:823-835. [PMID: 22394027 PMCID: PMC3470932 DOI: 10.1111/j.1469-8137.2012.04077.x] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2011] [Accepted: 01/13/2012] [Indexed: 05/13/2023]
Abstract
• Aroma variability in truffles has been attributed to maturation (Tuber borchii), linked to environmental factors (Tuber magnatum), but the involvement of genetic factors has been ignored. We investigated aroma variability in Tuber uncinatum, a species with wide distribution. Our aim was to assess aroma variability at different spatial scales (i.e. trees, countries) and to quantify how aroma was affected by genotype, fruiting body maturity, and geographical origin. • A volatile fingerprinting method was used to analyze the aroma of 223 T. uncinatum fruiting bodies from seven European countries. Maturity was estimated from spore melanization. Genotypic fingerprinting was performed by amplified fragment length polymorphism (AFLP). • Discriminant analysis revealed that, regardless of the geographical origin of the truffles, most of the aroma variability was caused by eight-carbon-containing volatiles (C8-VOCs). In an orchard of T. uncinatum, truffles producing different concentrations of C8-VOCs clustered around distinct host trees. This clustering was not associated with maturity, but was associated with fungal genotype. • These results indicate that the variation in C8-VOCs in truffles is most likely under genetic control. They exemplify that understanding the factors behind aroma variability requires a holistic approach. Furthermore, they also raise new questions regarding the ecological role of 1-octen-3-ol in truffles.
Collapse
Affiliation(s)
- Richard Splivallo
- Molecular Phytopathology and Mycotoxin Research, University of GoettingenGrisebachstrasse 6, D-37077 Goettingen, Germany
| | - Nayuf Valdez
- Molecular Phytopathology and Mycotoxin Research, University of GoettingenGrisebachstrasse 6, D-37077 Goettingen, Germany
| | - Nina Kirchhoff
- Molecular Phytopathology and Mycotoxin Research, University of GoettingenGrisebachstrasse 6, D-37077 Goettingen, Germany
| | - Marta Castiella Ona
- Molecular Phytopathology and Mycotoxin Research, University of GoettingenGrisebachstrasse 6, D-37077 Goettingen, Germany
| | | | - Ivo Feussner
- Department of Plant Biochemistry, Albrecht von Haller Institute for Plant Sciences, Georg August UniversityJustus-von-Liebig Weg 11, D-37077 Göttingen, Germany
| | - Petr Karlovsky
- Molecular Phytopathology and Mycotoxin Research, University of GoettingenGrisebachstrasse 6, D-37077 Goettingen, Germany
| |
Collapse
|
39
|
Sawahata T, Shimano S, Suzuki M. Tricholoma matsutake 1-Ocen-3-ol and methyl cinnamate repel mycophagous Proisotoma minuta (Collembola: Insecta). Mycorrhiza 2008; 18:111-4. [PMID: 18066606 PMCID: PMC2245993 DOI: 10.1007/s00572-007-0158-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2007] [Accepted: 11/08/2007] [Indexed: 05/14/2023]
Abstract
Two major volatiles produced by the mycelia and fruiting bodies of Tricholoma matsutake (1-octen-3-ol and methyl cinnamate) repel a mycophagous collembolan, Proisotoma minuta. Aggregation of the collembolans on their diet was significantly inhibited by exposure to 1 ppm methyl cinnamate or 10 to 100 ppm 1-octen-3-ol. The aggregation activity decreased dose-dependently upon exposure to 1-octen-3-ol at concentrations higher than 0.01 ppm. Aggregation in the presence of methyl cinnamate exhibited three phases: no significant effect at concentrations ranging from 0.001 to 0.1 ppm, significant inhibition from 1 to 100 ppm, and strong inhibition at 1,000 ppm. These results may explain why certain collembolan species do not prefer T. matsutake fruiting bodies.
Collapse
Affiliation(s)
- Takuo Sawahata
- Matsunoyama Museum of Natural Science, Tokamachi City, Niigata, Japan.
| | | | | |
Collapse
|