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Wang L, Erb M. Feeding Assay to Study the Effect of Phytocytokines on Direct and Indirect Defense in Maize. Methods Mol Biol 2024; 2731:133-142. [PMID: 38019431 DOI: 10.1007/978-1-0716-3511-7_10] [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] [Indexed: 11/30/2023]
Abstract
Phytocytokines mediate defense against pests and pathogens. Many methods have been developed to study the physiological responses triggered by phytocytokines in dicot plants. Here, we describe a detailed peptide feeding protocol to study the effect of phytocytokines on direct and indirect anti-herbivore defense in maize. This method relies on peptide uptake by the excised maize seedling or leaves via the transpiration stream. The headspace volatiles from plant samples are then analyzed by proton transfer reaction time-of-flight mass spectrometry (PTR-TOF-MS), or by gas chromatography-mass spectrometry (GC-MS). The samples can also be further processed to evaluate phytocytokine-induced defense gene expression or phytohormone production.
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Affiliation(s)
- Lei Wang
- Institute of Plant Sciences, University of Bern, Bern, Switzerland.
| | - Matthias Erb
- Institute of Plant Sciences, University of Bern, Bern, Switzerland
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2
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Inoue TA, Suetake M, Nishidzu N, Yokohari F, Niihara K, Fukuda T. Behavioral and Electrophysiological Study on Eight Japanese Papilio Species with Five Host plant Volatiles and Linalool. J Chem Ecol 2023; 49:397-407. [PMID: 37378686 PMCID: PMC10611675 DOI: 10.1007/s10886-023-01433-2] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 02/07/2023] [Accepted: 05/09/2023] [Indexed: 06/29/2023]
Abstract
An electroantennogram (EAG) technique compared the antennal olfactory responses by both sexes of eight Japanese Papilio species with known host plants in laboratory experiments. Papilio species were collected from Honshû and Kyûshû (Japanese islands). The behavioral responses to volatile leaf substances from Citrus deliciosa, Zanthoxylum ailanthoides, Phellodendron amurense, Orixa japonica, and Foeniculum vulgare were examined in laboratory experiments. Individual EAG reactions were recorded. The results were very similar to the empirical field observations. The electrophysiological results of both sexes showed that the volatile substances released from non-preferred plants mainly elicited more significant EAG responses than the volatile substances from preferred host plants. Moreover, we performed behavioral experiments using eight female butterflies and their responses to five host plant species. An association between host plant selection behavior and taxonomical classification exists within the Papilio genus. The EAG responses were small when exposed to the plants with high scores in the behavioral experiments. Host plant preference patterns seem to be related to the volatile substances within the host plants. The butterflies responded to Linalool in both the behavioral and electrophysiological experiments.
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Affiliation(s)
- Takashi A Inoue
- Studio Ace Enterprise and Pretties, Shimosueyoshi 5- 5- 2, Tsurumi, Kanagawa, 230-0012, Japan.
- Graduate School of Integrative Science and Engineering, Tokyo City University, Tamadzutsumi, Setagata, Tokyo, 158-8557, Japan.
| | - Mami Suetake
- Department of Earth System Science, Fukuoka University, 8-19-1 Nanakuma, Jônan, Fukuoka, 814-0180, Japan
| | - Narumi Nishidzu
- Department of Earth System Science, Fukuoka University, 8-19-1 Nanakuma, Jônan, Fukuoka, 814-0180, Japan
| | - Fumio Yokohari
- Department of Earth System Science, Fukuoka University, 8-19-1 Nanakuma, Jônan, Fukuoka, 814-0180, Japan
| | - Kinuko Niihara
- Department of Natural Sciences, Faculty of Science and Engineering, Tokyo City University, Tamadzutsumi, Setagaya, Tokyo, 158-8557, Japan
| | - Tatsuya Fukuda
- Graduate School of Integrative Science and Engineering, Tokyo City University, Tamadzutsumi, Setagata, Tokyo, 158-8557, Japan
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Mondal R, Saha S, Kesh D, Mukherjee D. Basin Transition and Alternative States: Role of Multi-species Herbivores-Induced Volatile in Plant-Insect Interactions. Bull Math Biol 2021; 83:100. [PMID: 34448068 DOI: 10.1007/s11538-021-00930-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 10/28/2020] [Accepted: 07/26/2021] [Indexed: 10/20/2022]
Abstract
A simple model on volatile organic compound (VOC)-mediated plant-insect interactions is proposed and examined here, when two different classes of herbivorous insects competing for a common resource (plant) in the presence of a specialist carnivorous enemy, which only predates one of the herbivore species. We, particularly, emphasize the impact of VOCs on plant's growth fitness. The system experiences several local and global bifurcations with emergent alternative states for variations in recruitment factors and predation rate. Basin transitions and basin of attractions have provided detail descriptions on the selectivity of the alternative states, when only one of the herbivore species can survive depending on the choice of initial population densities of the interacting species and how it provides a steady growth in plant. Additionally, our results support the concept of competitive exclusion principle in an indirect interspecific competition between the two herbivore types for the common resource, plant.
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Affiliation(s)
- Ritwika Mondal
- Department of Mathematics, Centre for Mathematical Biology and Ecology, Jadavpur University, Kolkata, 700032, India
| | - Suman Saha
- Translational Health Science and Technology Institute, NCR Biotech Science Cluster, Faridabad, 121001, India
| | - Dipak Kesh
- Department of Mathematics, Vivekananda College, Thakurpukur, Kolkata, 700063, India.
| | - Debasis Mukherjee
- Department of Mathematics, Vivekananda College, Thakurpukur, Kolkata, 700063, India
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Lin Y, Huang J, Akutse KS. Whitefly-induced tomato volatiles enhance the virulence of Lecanicillium lecanii. J Invertebr Pathol 2021; 183:107623. [PMID: 34052281 DOI: 10.1016/j.jip.2021.107623] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 02/19/2021] [Revised: 05/20/2021] [Accepted: 05/21/2021] [Indexed: 11/24/2022]
Abstract
Entomopathogenic fungi (EPF) are a group of microorganisms that have potential for replacing synthetic chemical pesticides. However, EPF virulence is often insufficient, and therefore adoption of EPF biopesticides has been relatively limited. Previous studies have shown that herbivore-induced plant volatiles (HIPVs) promoted the virulence of Lecanicillium lecanii, and that extracellular proteases and chitinases are important virulence factors of entomopathogenic fungi. We therefore put forward the hypothesis that HIPVs promote L. lecanii virulence by inducing extracellular protease or/and chitinase activity. Lecanicillium lecanii was treated with tomato HIPVs induced by various numbers/densities of Bemisia tabaci, the effect of HIPVs on L. lecanii virulence and activities of virulence-related enzymes (extracellular proteases and chitinases) was analyzed. Changes in enzyme activities were confirmed by measuring the variations in Pr1 and Chit II genes expression of virulence-related enzymes under the influence of HIPVs. Finally, the correlation between virulence and virulence-related enzymes or genes was analyzed to explore the mechanism of promoting HIPVs in L. lecanii virulence enhancement. The results showed that volatiles produced by the tomato plants induced by 50 B. tabaci adults (50-HIPVs) significantly enhanced the virulence of L. lecanii. When exposed to both 50-HIPVs and L. lecanii, the mortality rate of B. tabaci reached 79.0% within 7 days compared to 28.87% in the control group. Additionally, 50-HIPVs significantly promoted the activity of chitinase and the relative expression of Chit II genes, which consequently increased by 62.74% and 48.55%, respectively. However, each group of HIPVs had no promoting effect on extracellular protease and Pr1 gene expression. Correlation analysis results showed that the virulence of L. lecanii is significantly correlated with the activity of chitinase and relative expression of Chit II genes. Thus, HIPVs induced virulence of L. lecanii by increasing chitinase activity. This study demonstrates important methods to enhance the virulence of L. lecanii. Moreover, from the perspective of chemical ecology, the findings provide theoretical support for field application of EPF, and also reveal the impact of HIPVs on EPF from a biochemical perspective.
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Affiliation(s)
- Yongwen Lin
- Food and Biological Engineering in Zhangzhou Institute of Technology, No. 2 in College Street, Zhangzhou City 363000, China; Fujian Provincial Key Laboratory of Food Microbiology and Enzyme Engineering, Xiamen, Fujian Province 361021, China.
| | - Jinhua Huang
- Department of Information Engineering in Zhangzhou Institute of Technology, No. 2 in College Street, Zhangzhou City 363000, China
| | - Komivi S Akutse
- International Centre of Insect Physiology and Ecology, Nairobi, P.O. Box 30772-00100, Kenya
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Shi XB, Yan S, Zhang C, Zheng LM, Zhang ZH, Sun SE, Gao Y, Tan XQ, Zhang DY, Zhou XG. Aphid endosymbiont facilitates virus transmission by modulating the volatile profile of host plants. BMC Plant Biol 2021; 21:67. [PMID: 33514310 PMCID: PMC7846988 DOI: 10.1186/s12870-021-02838-5] [Citation(s) in RCA: 1] [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] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Accepted: 01/11/2021] [Indexed: 06/12/2023]
Abstract
BACKGROUND Most plant viruses rely on vectors for their transmission and spread. One of the outstanding biological questions concerning the vector-pathogen-symbiont multi-trophic interactions is the potential involvement of vector symbionts in the virus transmission process. Here, we used a multi-factorial system containing a non-persistent plant virus, cucumber mosaic virus (CMV), its primary vector, green peach aphid, Myzus persicae, and the obligate endosymbiont, Buchnera aphidicola to explore this uncharted territory. RESULTS Based on our preliminary research, we hypothesized that aphid endosymbiont B. aphidicola can facilitate CMV transmission by modulating plant volatile profiles. Gene expression analyses demonstrated that CMV infection reduced B. aphidicola abundance in M. persicae, in which lower abundance of B. aphidicola was associated with a preference shift in aphids from infected to healthy plants. Volatile profile analyses confirmed that feeding by aphids with lower B. aphidicola titers reduced the production of attractants, while increased the emission of deterrents. As a result, M. persicae changed their feeding preference from infected to healthy plants. CONCLUSIONS We conclude that CMV infection reduces the B. aphidicola abundance in M. persicae. When viruliferous aphids feed on host plants, dynamic changes in obligate symbionts lead to a shift in plant volatiles from attraction to avoidance, thereby switching insect vector's feeding preference from infected to healthy plants.
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Affiliation(s)
- Xiao-Bin Shi
- Laboratory of Pest Management of Horticultural Crop of Hunan Province, Hunan Plant Protection Institute, Hunan Academy of Agricultural Sciences, Changsha, 410125, China
| | - Shuo Yan
- Laboratory of Pest Management of Horticultural Crop of Hunan Province, Hunan Plant Protection Institute, Hunan Academy of Agricultural Sciences, Changsha, 410125, China
| | - Chi Zhang
- Department of Entomology, University of Kentucky, Lexington, KY, 40546, USA
| | - Li-Min Zheng
- Laboratory of Pest Management of Horticultural Crop of Hunan Province, Hunan Plant Protection Institute, Hunan Academy of Agricultural Sciences, Changsha, 410125, China
| | - Zhan-Hong Zhang
- Institute of Vegetable, Hunan Academy of Agricultural Sciences, Changsha, 410125, China
| | - Shu-E Sun
- Laboratory of Pest Management of Horticultural Crop of Hunan Province, Hunan Plant Protection Institute, Hunan Academy of Agricultural Sciences, Changsha, 410125, China
| | - Yang Gao
- Laboratory of Pest Management of Horticultural Crop of Hunan Province, Hunan Plant Protection Institute, Hunan Academy of Agricultural Sciences, Changsha, 410125, China
| | - Xin-Qiu Tan
- Laboratory of Pest Management of Horticultural Crop of Hunan Province, Hunan Plant Protection Institute, Hunan Academy of Agricultural Sciences, Changsha, 410125, China
| | - De-Yong Zhang
- Laboratory of Pest Management of Horticultural Crop of Hunan Province, Hunan Plant Protection Institute, Hunan Academy of Agricultural Sciences, Changsha, 410125, China.
| | - Xu-Guo Zhou
- Department of Entomology, University of Kentucky, Lexington, KY, 40546, USA.
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Gaffke AM, Alborn HT. Desorption Temperature, Solid-Phase Microextraction (SPME), and Natural Product Analyses, how Low Can we Go? J Chem Ecol 2021; 47:134-8. [PMID: 33460000 DOI: 10.1007/s10886-021-01247-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 11/13/2020] [Accepted: 01/07/2021] [Indexed: 10/22/2022]
Abstract
Solid phase microextraction (SPME) has become a common technique for volatile sampling due to its ease of use and limited technical requirements. The solvent-free nature of SPME is also exceptionally attractive for gas chromatography mass spectrometry (GC/MS) analysis. To ensure efficient transfer of the sample to the GC, the manufacturer recommend injector desorption temperatures in the range of 200 to 320 °C. A high desorption temperature can, however, have unwanted effects on analyses of plant and insect produced semiochemicals. By investigating the quantitative and qualitative chromatographic responses at varying inlet temperatures for a component blend of seven plant produced volatile compounds, we found the thermally labile plant-nematode signaling compound, pregeijerene to degrade to geijerene at all tested temperatures within the recommended range (200, 240, and 280 °C), but that it did not break down with an inlet temperature below 200 °C (100 °C and 150 °C). Degradation was also detected for the sesquiterpene germacrene D, but only at the highest inlet temperature tested (280 °C). Surprisingly, an inlet temperature of 200 °C gave the highest sample recovery, measured as total peak area while an inlet temperature of 100 °C as well as 280 °C gave the lowest total area values. An increase in desorption time from 3 to 5 min. Resulted in a recovery at 100 °C close to that obtained at 200 °C. Peak broadening was minimal, and only observed at the 100 °C inlet temperature. Based on these results, we highly recommend that SPME users include desorption temperature as one variable when developing sampling procedures for novel biological systems to ensure that potentially present thermally labile compounds are not degraded.
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Hoffmann A, Bourgeois T, Munoz A, Anton S, Gevar J, Dacher M, Renou M. A plant volatile alters the perception of sex pheromone blend ratios in a moth. J Comp Physiol A Neuroethol Sens Neural Behav Physiol 2020; 206:553-570. [PMID: 32335729 DOI: 10.1007/s00359-020-01420-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [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: 11/20/2019] [Revised: 03/31/2020] [Accepted: 04/04/2020] [Indexed: 11/29/2022]
Abstract
Mate finding in most moths is based on male perception of a female-emitted pheromone whose species specificity resides in component chemistry and proportions. Components are individually detected by specialized olfactory receptor neurons (ORNs) projecting into the macroglomerular complex (MGC) of the male brain. We asked how robust ratio recognition is when challenged by a plant volatile background. To test this, we investigated the perception of the pheromone blend in Agrotis ipsilon, a moth species whose females produce a blend of Z7-dodecenyl acetate (Z7-12:Ac), Z9-tetradecenyl acetate (Z9-14:Ac), and Z11-hexadecenyl acetate in a 4:1:4 ratio optimally attractive for males. First, we recorded the responses of specialist ORNs for Z7 and Z9 and showed that heptanal, a flower volatile, activated Z7 but not Z9 neurons. Then, we recorded intracellularly the responses of MGC neurons to various ratios and showed that heptanal altered ratio responses of pheromone-sensitive neurons. Finally, we analyzed the behavior of males in a wind tunnel and showed that their innate preference for the 4:1:4 blend was shifted in the presence of heptanal. Pheromone ratio recognition may thus be altered by background odorants. Therefore, the olfactory environment might be a selective force for the evolution of pheromone communication systems.
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Affiliation(s)
- Antoine Hoffmann
- Institut National de La Recherche Agronomique (INRA), Sorbonne Université, Université Paris Est Créteil, CNRS, UMR IEES, IRD-Institute for Ecology and Environmental Sciences of Paris (iEES Paris), Route de Saint Cyr, 78026, Versailles, France.,Department of Neurobiology, Max Planck Institute of Animal Behavior, University of Konstanz, Univeristätsstraße 10, 78464, Konstanz, Germany
| | - Thomas Bourgeois
- Institut National de La Recherche Agronomique (INRA), Sorbonne Université, Université Paris Est Créteil, CNRS, UMR IEES, IRD-Institute for Ecology and Environmental Sciences of Paris (iEES Paris), Route de Saint Cyr, 78026, Versailles, France
| | - Alicia Munoz
- Institut National de La Recherche Agronomique (INRA), Sorbonne Université, Université Paris Est Créteil, CNRS, UMR IEES, IRD-Institute for Ecology and Environmental Sciences of Paris (iEES Paris), Route de Saint Cyr, 78026, Versailles, France.,Centre d'élevage conservatoire de l'outarde canepetière-Zoodyssée, 79360, Villiers-en-Bois, France
| | - Sylvia Anton
- Institute for Genetics, Environment and Plant Protection-EGI, INRA-Agrocampus Ouest, Université de Rennes 1, 49045, Angers, France
| | - Jeremy Gevar
- Institut National de La Recherche Agronomique (INRA), Sorbonne Université, Université Paris Est Créteil, CNRS, UMR IEES, IRD-Institute for Ecology and Environmental Sciences of Paris (iEES Paris), Route de Saint Cyr, 78026, Versailles, France
| | - Matthieu Dacher
- Institut National de La Recherche Agronomique (INRA), Sorbonne Université, Université Paris Est Créteil, CNRS, UMR IEES, IRD-Institute for Ecology and Environmental Sciences of Paris (iEES Paris), Route de Saint Cyr, 78026, Versailles, France
| | - Michel Renou
- Institut National de La Recherche Agronomique (INRA), Sorbonne Université, Université Paris Est Créteil, CNRS, UMR IEES, IRD-Institute for Ecology and Environmental Sciences of Paris (iEES Paris), Route de Saint Cyr, 78026, Versailles, France.
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Shi X, Preisser EL, Liu B, Pan H, Xiang M, Xie W, Wang S, Wu Q, Li C, Liu Y, Zhou X, Zhang Y. Variation in both host defense and prior herbivory can alter plant-vector-virus interactions. BMC Plant Biol 2019; 19:556. [PMID: 31842757 PMCID: PMC6916021 DOI: 10.1186/s12870-019-2178-z] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2019] [Accepted: 11/29/2019] [Indexed: 05/05/2023]
Abstract
BACKGROUND While virus-vector-host interactions have been a major focus of both basic and applied ecological research, little is known about how different levels of plant defense interact with prior herbivory to affect these relationships. We used genetically-modified strains of tomato (Solanum lycopersicum) varying in the jasmonic acid (JA) plant defense pathways to explore how plant defense and prior herbivory affects a plant virus (tomato yellow leaf curl virus, 'TYLCV'), its vector (the whitefly Bemisia tabaci MED), and the host. RESULTS Virus-free MED preferred low-JA over high-JA plants and had lower fitness on high-JA plants. Viruliferous MED preferred low-JA plants but their survival was unaffected by JA levels. While virus-free MED did not lower plant JA levels, viruliferous MED decreased both JA levels and the expression of JA-related genes. Infestation by viruliferous MED reduced plant JA levels. In preference tests, neither virus-free nor viruliferous MED discriminated among JA-varying plants previously exposed to virus-free MED. However, both virus-free and viruliferous MED preferred low-JA plant genotypes when choosing between plants that had both been previously exposed to viruliferous MED. The enhanced preference for low-JA genotypes appears linked to the volatile compound neophytadiene, which was found only in whitefly-infested plants and at concentrations inversely related to plant JA levels. CONCLUSIONS Our findings illustrate how plant defense can interact with prior herbivory to affect both a plant virus and its whitefly vector, and confirm the induction of neophytadiene by MED. The apparent attraction of MED to neophytadiene may prove useful in pest detection and management.
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Affiliation(s)
- Xiaobin Shi
- Hunan Academy of Agricultural Sciences, Institute of Plant Protection, Changsha, 410000, China
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Evan L Preisser
- Department of Biological Sciences, University of Rhode Island, Kingston, RI, 02881, USA
| | - Baiming Liu
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Huipeng Pan
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Min Xiang
- Hunan Horticultural Research Institute, Hunan Academy of Agricultural Sciences, Changsha, 410125, China
| | - Wen Xie
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Shaoli Wang
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Qingjun Wu
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Chuanyou Li
- Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Yong Liu
- Hunan Academy of Agricultural Sciences, Institute of Plant Protection, Changsha, 410000, China
| | - Xuguo Zhou
- Department of Entomology, University of Kentucky, Lexington, KY, 40546, USA
| | - Youjun Zhang
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
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Ogah EO, Smart LE, Woodcock CM, Caulfield JC, Birkett MA, Pickett JA, Nwilene FE, Bruce TJ. Electrophysiological and behavioral responses of female African rice gall midge, Orseolia oryzivora Harris and Gagné, to host plant volatiles. J Chem Ecol 2017; 43:13-6. [PMID: 27815665 DOI: 10.1007/s10886-016-0788-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Revised: 09/02/2016] [Accepted: 10/20/2016] [Indexed: 10/20/2022]
Abstract
African rice gall midge, Orseolia oryzivora Harris and Gagné, is a major pest of rice in Africa. Depsite its economic importance, its chemical ecology is not well understood. Here, we assessed behavioral and electrophysiological responses of O. oryzivora to host plant volatiles. In olfactometer bioassays, mated female O. oryzivora were attracted to volatiles emitted from intact rice plants but were repelled by volatiles collected from plants infested by conspecifics. In a choice test, there was a preference for volatiles from uninfested plants over those from infested plants. Coupled gas chromatography-electroantennography analyses of panicle volatiles isolated four electrophysiologically active components: (S)-linalool, 4,8-dimethyl-1,3,7-nonatriene, (E)-caryophyllene, and (R/S)-(E)-nerolidol. A synthetic blend of volatiles at the same concentration and ratio as that from an intact plant was attractive to mated females, whereas a blend based on the ratio of volatiles from an infested plant was repellent. This suggests that O. oryzivora uses olfaction for host plant recognition. The identification of blends of volatiles emitted by plants that can both attract and repel O. oryzivora may aid the development of sustainable control measures.
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Cheng S, Fu X, Mei X, Zhou Y, Du B, Watanabe N, Yang Z. Regulation of biosynthesis and emission of volatile phenylpropanoids/benzenoids in petunia× hybrida flowers by multi-factors of circadian clock, light, and temperature. Plant Physiol Biochem 2016; 107:1-8. [PMID: 27235646 DOI: 10.1016/j.plaphy.2016.05.026] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [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: 03/22/2016] [Revised: 05/03/2016] [Accepted: 05/18/2016] [Indexed: 05/24/2023]
Abstract
Floral volatile phenylpropanoids and benzenoids (VPBs) play important ecological functions and have potential economic applications. Little is known about how multi-factors in integration regulate the formation and emission of floral VPBs. In the present study, we investigated effects of multi factors including endogenous circadian clock, light, and temperature on the formation and emission of VPBs, which are major volatiles in flowers of Petunia× hybrida cv. 'Mitchell Diploid'. Endogenous circadian clock was proposed as the most important factor regulating rhythmic emission of VPBs and expressions of structural genes involved in the upstream biosynthetic pathway of VPBs, but did not affect expression levels of structural genes involved in the downstream pathway and VPBs-related regulators. In contrast to light, temperature was a more constant factor affecting emission of VPBs. VPBs emission could be inhibited within a short time by increasing temperature. The information will contribute to our understanding of emission mechanism of floral volatiles.
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Affiliation(s)
- Sihua Cheng
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement & Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Xingke Road 723, Tianhe District, Guangzhou, 510650, China; University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing, 100049, China
| | - Xiumin Fu
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement & Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Xingke Road 723, Tianhe District, Guangzhou, 510650, China
| | - Xin Mei
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement & Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Xingke Road 723, Tianhe District, Guangzhou, 510650, China
| | - Ying Zhou
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement & Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Xingke Road 723, Tianhe District, Guangzhou, 510650, China
| | - Bing Du
- College of Food, South China Agricultural University, Wushan Road, Tianhe District, Guangzhou, 510642, China; Juxiangyuan Health Food (Zhongshan) Co., Ltd., No. 13, Yandong Second Road, Torch Development Zone, Zhongshan, 528400, China
| | - Naoharu Watanabe
- Graduate School of Science and Technology, Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu, 432-8561, Japan
| | - Ziyin Yang
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement & Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Xingke Road 723, Tianhe District, Guangzhou, 510650, China; University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing, 100049, China.
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Yan SW, Zhang J, Liu Y, Li GQ, Wang GR. An olfactory receptor from Apolygus lucorum (Meyer-Dur) mainly tuned to volatiles from flowering host plants. J Insect Physiol 2015; 79:36-41. [PMID: 26050917 DOI: 10.1016/j.jinsphys.2015.06.002] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2015] [Revised: 06/03/2015] [Accepted: 06/04/2015] [Indexed: 06/04/2023]
Abstract
Apolygus lucorum (Meyer-Dür) (Hemiptera: Miridae) is one of the most serious agricultural pests, feeding on a wide range of cultivated plants, including cotton, cereals and vegetables in the north of China. This insect can frequently switch between habitats and host plants over seasons and prefer plants in bloom. A. lucorum relies heavily on olfaction to locate its host plants finely discriminating different plant volatiles in the environment. Despite its economical importance, research on the olfactory system of this species has been so far very limited. In this study, we have identified and characterized an olfactory receptor which is sensitively tuned to (Z)-3-Hexenyl acetate and several flowering compounds. Besides being present in the bouquet of some flowers, these compounds are produced by plants that have suffered attacks and are supposed to act as chemical messengers between plants. This OR may play an important role in the selection of host plants.
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Affiliation(s)
- Shu-Wei Yan
- Education Ministry Key Laboratory of Integrated Management of Crop Disease and Pests, College of Plant Protection, Nanjing Agricultural University, Nanjing, China; State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Jin Zhang
- Education Ministry Key Laboratory of Integrated Management of Crop Disease and Pests, College of Plant Protection, Nanjing Agricultural University, Nanjing, China; State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Yang Liu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Guo-Qing Li
- Education Ministry Key Laboratory of Integrated Management of Crop Disease and Pests, College of Plant Protection, Nanjing Agricultural University, Nanjing, 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, China.
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Taniguchi S, Miyoshi S, Tamaoki D, Yamada S, Tanaka K, Uji Y, Tanaka S, Akimitsu K, Gomi K. Isolation of jasmonate-induced sesquiterpene synthase of rice: product of which has an antifungal activity against Magnaporthe oryzae. J Plant Physiol 2014; 171:625-32. [PMID: 24709155 DOI: 10.1016/j.jplph.2014.01.007] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [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: 11/11/2013] [Revised: 01/24/2014] [Accepted: 01/24/2014] [Indexed: 05/24/2023]
Abstract
Rice is one of the most important crops worldwide, and it is a model for molecular studies of monocotyledonous species, particularly for understanding the molecular mechanisms of plant disease resistance. Jasmonic acid (JA) is an important plant hormone involved in rice-pathogen interactions. In addition, JA-induced volatiles are known to be involved in the rice defense system regulated by JA signaling. In this study, we isolated a JA-induced terpene synthase from rice, and found that it produces two sesquiterpenes; β-elemene and β-bisabolene. Furthermore, β-elemene exhibited significant antifungal activity against Magnaporthe oryzae; however it did not exhibited any antibacterial activity against Xanthomonas oryzae pv. oryzae. JA-induced accumulation of β-elemene was regulated by OsJAZ8, a rice jasmonate ZIM-domain (JAZ) protein that is involved in the JA signaling pathway, suggesting that β-elemene plays an important role in JA-induced resistance, and that it functions as an antifungal compound in rice.
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Affiliation(s)
- Shiduku Taniguchi
- Faculty of Agriculture and Gene Research Center, Kagawa University, Miki, Kagawa 761-0795, Japan
| | - Seika Miyoshi
- Faculty of Agriculture and Gene Research Center, Kagawa University, Miki, Kagawa 761-0795, Japan
| | - Daisuke Tamaoki
- Faculty of Agriculture and Gene Research Center, Kagawa University, Miki, Kagawa 761-0795, Japan
| | - Shoko Yamada
- Faculty of Agriculture and Gene Research Center, Kagawa University, Miki, Kagawa 761-0795, Japan
| | - Keiichiro Tanaka
- Faculty of Agriculture and Gene Research Center, Kagawa University, Miki, Kagawa 761-0795, Japan
| | - Yuya Uji
- Faculty of Agriculture and Gene Research Center, Kagawa University, Miki, Kagawa 761-0795, Japan
| | - Suzumi Tanaka
- Faculty of Agriculture and Gene Research Center, Kagawa University, Miki, Kagawa 761-0795, Japan
| | - Kazuya Akimitsu
- Faculty of Agriculture and Gene Research Center, Kagawa University, Miki, Kagawa 761-0795, Japan
| | - Kenji Gomi
- Faculty of Agriculture and Gene Research Center, Kagawa University, Miki, Kagawa 761-0795, Japan.
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