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Reyhani Haghighi S, Hosseininaveh V, Talebi K, Maali-Amiri R, Stelinski LL. Salicylic Acid Induced Resistance in Drought-Stressed Pistachio Seedlings Influences Physiological Performance of Agonoscena pistaciae (Hemiptera: Aphalaridae). JOURNAL OF ECONOMIC ENTOMOLOGY 2021; 114:2172-2188. [PMID: 34323979 DOI: 10.1093/jee/toab149] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Indexed: 06/13/2023]
Abstract
Induced host plant resistance is a potential approach to insect and disease management. Salicylic acid (SA) acts as a signal molecule to induce resistance in plants against sap-sucking insects. The effects of salicylic acid-induced resistance against common pistachio psylla, Agonoscena pistaciae Burckhardt and Lauterer, were investigated in well-watered and drought-stressed pistachio, Pistacia vera L. cv. Akbari, seedlings. Agonoscena pistaciae exhibited a significant preference for plants treated with SA as compared with untreated controls or those subjected to drought stress. Plants subjected to both drought stress and SA treatment were equivalently colonized as compared with control plants but were more attractive than those subjected to drought stress alone. Psyllid mortality increased on plants subjected to simultaneous drought stress and SA treatment as compared with controls. Salicylic acid treatment mediated production of defensive enzymes in plants, including superoxide dismutase (SOD), ascorbate peroxidase (APX), catalase (CAT), glutathione reductase (GR), guaiacol peroxidase (GPX) and polyphenol oxidase (PPO), as well as that of other metabolites such as phenol, malondialdehyde (MDA), H2O2, free amino acids, and pigments via phenylpropanoid pathways under conditions of drought. Despite increases in activity of detoxification (glutathione S transferase, carboxylesterase) and antioxidative (SOD, CAT, APX, phenoloxidase, GPX) enzymes in psyllids, reduced survival of A. pistaciae on drought stressed and SA-treated plants was likely caused by excessive H2O2 and high phenolic content in treated plants. Based on our results, we postulate that salicylic acid-induced defense against A. pistaciae under drought conditions could be manipulated to enhance antibiosis against this key pest in pistachio orchards.
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Affiliation(s)
- Sajjad Reyhani Haghighi
- Department of Plant Protection, College of Agriculture and Natural Resources, University of Tehran, 31587-77871 Karaj, Iran
| | - Vahid Hosseininaveh
- Department of Plant Protection, College of Agriculture and Natural Resources, University of Tehran, 31587-77871 Karaj, Iran
| | - Khalil Talebi
- Department of Plant Protection, College of Agriculture and Natural Resources, University of Tehran, 31587-77871 Karaj, Iran
| | - Reza Maali-Amiri
- Department of Agronomy and Plant Breeding, University College of Agriculture and Natural Resources, University of Tehran, 31587-77871 Karaj, Iran
| | - Lukasz L Stelinski
- Entomology and Nematology Department, Citrus Research and Education Center, University of Florida, Lake Alfred, FL, USA
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2
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Zhang J, Sun X. Recent advances in polyphenol oxidase-mediated plant stress responses. PHYTOCHEMISTRY 2021; 181:112588. [PMID: 33232863 DOI: 10.1016/j.phytochem.2020.112588] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 11/06/2020] [Accepted: 11/07/2020] [Indexed: 05/29/2023]
Abstract
Plant polyphenol oxidases (PPOs) are ubiquitous copper metalloenzymes with a biochemistry that has been known for more than a century. By the 1990s, biologists began to recognize the importance of PPOs in plant response to the infestation of herbivores and pathogens; ideas concerning a defensive role for PPOs arose to address observed evidence, and several testable hypotheses were suggested. Two pivotal discoveries in tomato (Lycopersicon esculentum Miller) plants, an inverse correlation between PPO levels and insect growth and PPO induction by defence signals, have driven many studies of PPO defence functions in the context of abiotic and biotic stresses. During the past three decades, extensive molecular research in transgenic and non-transgenic systems has partly revealed the sophisticated mechanisms underlying PPO defence against herbivores and pathogens. These understandings, rather than theoretical predictions, have driven the development of new hypotheses and advanced PPO-related studies. Here, we review progress in PPO family features, expression regulation and the defensive role of PPOs in plants. We propose assumptions of an extended range of co- and post-transcriptional processes to the regulation of unexplored PPO expression. In addition, the identification of endogenous PPO substrates and downstream targets of PPO action will be useful for elucidating PPO defensive roles. The potential effects of PPO-mediated oxidative defences on herbivore performance ultimately needs to be further investigated. Therefore, expanding multidisciplinary approaches to unexplored dimensions of PPO defence function should be a future priority.
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Affiliation(s)
- Jin Zhang
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, 310008, Zhejiang, China; Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture, Hangzhou, 310008, Zhejiang, China
| | - Xiaoling Sun
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, 310008, Zhejiang, China; Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture, Hangzhou, 310008, Zhejiang, China.
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3
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Homayoonzadeh M, Esmaeily M, Talebi K, Allahyari H, Nozari J, Michaud JP. Micronutrient Fertilization of Greenhouse Cucumbers Mitigates Pirimicarb Resistance in Aphis gossypii (Hemiptera: Aphididae). JOURNAL OF ECONOMIC ENTOMOLOGY 2020; 113:2864-2872. [PMID: 32964224 DOI: 10.1093/jee/toaa202] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Indexed: 06/11/2023]
Abstract
The nutritional status of host plants can have direct impacts on herbivore physiology and insect-plant interactions. We investigated the effect of micronutrients, including manganese, iron, zinc, and copper, on cucumber plant physiology, and on the biology and physiology of a strain of Aphis gossypii Glover selected over 12 generations to be resistant to pirimicarb. The micronutrient treatment increased the activity of superoxide dismutase, ascorbate peroxidase, guaiacol peroxidase, polyphenol oxidase, and phenylalanine ammonia-lyase in cucumber plants, and also increased levels of total phenolics, hydrogen peroxide, salicylic acid, and total chlorophyl, whereas malondialdehyde levels were unaffected. Pirimicarb-resistant cotton aphids that fed on micronutritient-amended cucumber plants expressed significantly decreased levels of acetylcholinesterase and detoxifying enzymes, specifically glutathione S-transferase, and carboxylesterase. Analysis of energy reserves in resistant A. gossypii fed on micronutritient-amended plants revealed decreases in the lipid and protein contents of aphids, whereas glycogen and carbohydrate contents showed no response. Resistant cotton aphids fed on micronutritient-amended plants showed significantly reduced fecundity, longevity, and reproductive periods, and a 1.7-fold reduction in pirimicarb LC50 compared with those fed on control plants. We conclude that micronutrient amendment negatively impacts the biological performance of insecticide-resistant cotton aphids, and diminishes their resistance to pirimicarb. Both direct effects on plant health, such as enhanced inducible defenses, and indirect effects on aphid fitness, such as reduced biological performance and detoxification abilities, were implicated. Therefore, optimization of micronutrient amendments could be a useful complement to other tactics for managing insecticide-resistant A. gossypii on cucumbers, and warrants exploration in other contexts.
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Affiliation(s)
- Mohammad Homayoonzadeh
- Department of Plant Protection, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran
| | - Mojtaba Esmaeily
- Department of Plant Protection, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran
| | - Khalil Talebi
- Department of Plant Protection, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran
| | - Hossein Allahyari
- Department of Plant Protection, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran
| | - Jamasb Nozari
- Department of Plant Protection, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran
| | - J P Michaud
- Department of Entomology, Agricultural Research Center-Hays, Kansas State University, Hays, KS
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4
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Homayoonzadeh M, Moeini P, Talebi K, Allahyari H, Torabi E, Michaud JP. Physiological responses of plants and mites to salicylic acid improve the efficacy of spirodiclofen for controlling Tetranychus urticae (Acari: Tetranychidae) on greenhouse tomatoes. EXPERIMENTAL & APPLIED ACAROLOGY 2020; 82:319-333. [PMID: 33068164 DOI: 10.1007/s10493-020-00559-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Accepted: 10/13/2020] [Indexed: 06/11/2023]
Abstract
Salicylic acid (SA) is a signaling molecule that can induce plant resistance to certain herbivores. Although the role of jasmonic acid in mediating mite-tomato plant interactions has been well studied, the role of salicylic acid has not. This study examined how the application of exogenous SA, via its effects on tomato plant physiology, alters the activity of mite digestive enzymes, mite energy reserves, and mite susceptibility to spirodiclofen. Enzymatic activity-including superoxide dismutase, ascorbate peroxidase, guaiacol peroxidase, polyphenol oxidase, and phenylalanine ammonia-lyase-along with contents of total phenolic, hydrogen peroxide, and total chlorophyll significantly increased in plants 24 h after treatment with 2 mM of SA. In contrast, catalase activity significantly decreased in treated plants, and malondialdehyde content was unaffected. Mites fed on tomato plants treated with SA had significantly lower glutathione S-transferase, esterase, α-amylase, and aminopeptidase activities than those fed on control plants. Energy reserve analyses demonstrated a significant decrease in contents of lipid, protein, and glycogen in mites fed on SA-treated plants, whereas carbohydrate content significantly increased. The LC50 of spirodiclofen was decreased 1.8-fold for Tetranychus urticae fed on SA-treated tomato plants compared to controls. Treatment of adult mites with 2 mM SA on leaf discs did not cause any direct mortality after 24 h. Finally, a greenhouse bioassay confirmed that spider mite mortality following exposure to spirodiclofen was significantly higher on SA plants than on control plants. Mortality of mites exposed to half of the recommended rate of spirodiclofen was similar to those exposed to the recommended rate when they were held on treated plants. These results have valuable implications for T. urticae management programs in tomato production.
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Affiliation(s)
- Mohammad Homayoonzadeh
- Department of Plant Protection, College of Agriculture and Natural Resources, University of Tehran, 31587-77871, Karaj, Iran
| | - Pedram Moeini
- Plant Virology Research Center, College of Agriculture, Shiraz University, 71441-65186, Shiraz, Iran
| | - Khalil Talebi
- Department of Plant Protection, College of Agriculture and Natural Resources, University of Tehran, 31587-77871, Karaj, Iran
| | - Hossein Allahyari
- Department of Plant Protection, College of Agriculture and Natural Resources, University of Tehran, 31587-77871, Karaj, Iran
| | - Ehssan Torabi
- Department of Plant Protection, College of Agriculture and Natural Resources, University of Tehran, 31587-77871, Karaj, Iran
| | - J P Michaud
- Department of Entomology, Kansas State University, Agricultural Research Center-Hays, Hays, KS, 67601, USA.
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Alber AV, Renault H, Basilio-Lopes A, Bassard JE, Liu Z, Ullmann P, Lesot A, Bihel F, Schmitt M, Werck-Reichhart D, Ehlting J. Evolution of coumaroyl conjugate 3-hydroxylases in land plants: lignin biosynthesis and defense. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2019; 99:924-936. [PMID: 31038800 DOI: 10.1111/tpj.14373] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 04/03/2019] [Accepted: 04/17/2019] [Indexed: 05/16/2023]
Abstract
Multiple adaptations were necessary when plants conquered the land. Among them were soluble phenylpropanoids related to plant protection and lignin necessary for upright growth and long-distance water transport. Cytochrome P450 monooxygenase 98 (CYP98) catalyzes a rate-limiting step in phenylpropanoid biosynthesis. Phylogenetic reconstructions suggest that a single copy of CYP98 founded each major land plant lineage (bryophytes, lycophytes, monilophytes, gymnosperms and angiosperms), and was maintained as a single copy in all lineages but the angiosperms. In angiosperms, a series of independent gene duplications and losses occurred. Biochemical assays in four angiosperm species tested showed that 4-coumaroyl-shikimate, a known intermediate in lignin biosynthesis, was the preferred substrate of one member in each species, while independent duplicates in Populus trichocarpa and Amborella trichopoda each showed broad substrate ranges, accepting numerous 4-coumaroyl-esters and -amines, and were thus capable of producing a wide range of hydroxycinnamoyl conjugates. The gymnosperm CYP98 from Pinus taeda showed a broad substrate range, but preferred 4-coumaroyl-shikimate as its best substrate. In contrast, CYP98s from the lycophyte Selaginella moellendorffii and the fern Pteris vittata converted 4-coumaroyl-shikimate poorly in vitro, but were able to use alternative substrates, in particular 4-coumaroyl-anthranilate. Thus, caffeoyl-shikimate appears unlikely to be an intermediate in monolignol biosynthesis in non-seed vascular plants, including ferns. The best substrate for CYP98A34 from the moss Physcomitrella patens was also 4-coumaroyl-anthranilate, while 4-coumaroyl-shikimate was converted to lower extents. Despite having in vitro activity with 4-coumaroyl-shikimate, CYP98A34 was unable to complement the Arabidopsis thaliana cyp98a3 loss-of-function phenotype, suggesting distinct properties also in vivo.
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Affiliation(s)
- Annette V Alber
- Institute of Plant Molecular Biology, CNRS, University of Strasbourg, Strasbourg, France
- Department of Biology and Centre for Forest Biology, University of Victoria, Victoria, BC, Canada
| | - Hugues Renault
- Institute of Plant Molecular Biology, CNRS, University of Strasbourg, Strasbourg, France
| | | | - Jean-Etienne Bassard
- Institute of Plant Molecular Biology, CNRS, University of Strasbourg, Strasbourg, France
| | - Zhenhua Liu
- Institute of Plant Molecular Biology, CNRS, University of Strasbourg, Strasbourg, France
| | - Pascaline Ullmann
- Institute of Plant Molecular Biology, CNRS, University of Strasbourg, Strasbourg, France
| | - Agnès Lesot
- Institute of Plant Molecular Biology, CNRS, University of Strasbourg, Strasbourg, France
| | - Frédéric Bihel
- Laboratoire d'Innovation Thérapeutique, UMR CNRS 7200, Illkirch, France
| | - Martine Schmitt
- Laboratoire d'Innovation Thérapeutique, UMR CNRS 7200, Illkirch, France
| | | | - Jürgen Ehlting
- Department of Biology and Centre for Forest Biology, University of Victoria, Victoria, BC, Canada
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Golan K, Kot I, Górska-Drabik E, Jurado IG, Kmieć K, Łagowska B. Physiological Response of Basil Plants to Twospotted Spider Mite (Acari: Tetranychidae) Infestation. JOURNAL OF ECONOMIC ENTOMOLOGY 2019; 112:948-956. [PMID: 30602029 DOI: 10.1093/jee/toy399] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Indexed: 06/09/2023]
Abstract
The induction of plant resistance against pests is considered a potential method of controlling mite infestation as it restricts the use of chemical pesticides in herbal crops. Our goal was to investigate whether plant physiological response to mite feeding varied depending on basil cultivar and/or duration of mite infestation. The effect of plant acceptance, mite mortality rate, and changes in physiological parameters: malondialdehyde content (MDA), hydrogen peroxide (H2O2) concentration, and antioxidant enzyme activities, including guaiacol peroxidase (GPX) and catalase (CAT) were examined in this study. Tetranychus urticae Koch (Acari: Tetranychidae) infestation induced oxidative stress in three Ocimum basilicum L. cultivars: 'Sweet basil,' 'Purpurascens,' and 'Fino Verde.' The analysis of mite behavior and alteration in metabolic plant profiles showed different sensitivities of basil cultivars to biotic stress that were dependent on the cultivar and duration of infestation. All basil plants were suitable as host plants for T. urticae, but they varied in the level of susceptibility to mite feeding. O. basilicum 'Fino Verde' was the most suitable host for the twospotted spider mite. In turn, O. basilicum 'Purpurascens' was characterized by the lowest level of susceptibility to T. urticae feeding. The lowest acceptance, the highest mortality of twospotted spider mite individuals as well as decreased levels of H2O2 and MDA, significantly increased GPX activity and low level of CAT activity were recorded in O. basilicum 'Purpurascens' leaves. Research on plant responses to biotic stress can inform breeding cultivars resistant to arthropod attack.
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Affiliation(s)
- Katarzyna Golan
- Department of Plant Protection, University of Life Sciences in Lublin, Leszczyńskiego 7,20-069 Lublin, Poland
| | - Izabela Kot
- Department of Plant Protection, University of Life Sciences in Lublin, Leszczyńskiego 7,20-069 Lublin, Poland
| | - Edyta Górska-Drabik
- Department of Plant Protection, University of Life Sciences in Lublin, Leszczyńskiego 7,20-069 Lublin, Poland
- Corresponding author, e-mail:
| | - Inmaculada Garrido Jurado
- Department of Agricultural and Forestry Sciences, University of Cordoba, Campus de Rabanales building C4 'Celestino Mutis' 14071 Cordoba, Spain
| | - Katarzyna Kmieć
- Department of Plant Protection, University of Life Sciences in Lublin, Leszczyńskiego 7,20-069 Lublin, Poland
| | - Bożena Łagowska
- Department of Plant Protection, University of Life Sciences in Lublin, Leszczyńskiego 7,20-069 Lublin, Poland
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7
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Kot I, Rubinowska K. Physiological Response of Pedunculate Oak Trees to Gall-Inducing Cynipidae. ENVIRONMENTAL ENTOMOLOGY 2018; 47:669-675. [PMID: 29659765 DOI: 10.1093/ee/nvy047] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Indexed: 05/17/2023]
Abstract
Gall-inducing Cynipidae (Hymenoptera) manipulate the leaves of their host plants and induce local resistance, resulting in a diversity of physiological changes. In this study, three gall morphotypes caused by the asexual generation of Cynips quercusfolii L., Neuroterus numismalis (Fourc.) and Neuroterus quercusbaccarum L. (Hymenoptera: Cynipidae) on pedunculate oaks (Quercus robur L. (Fagales: Fagaceae)), were used as a model to examine physiological alterations in galls and foliar tissues, compared to non-galled tissues. Our goal was to investigate whether plant physiological response to insect feeding on the same host plant varies depending on gall-wasp species. In particular, the cytoplasmic membrane condition, hydrogen peroxide (H2O2) concentration and changes in antioxidative enzyme activities, including guaiacol peroxidase (GPX) and ascorbate peroxidase (APX) were examined in this study. All cynipid species increased H2O2 levels in the leaves with galls, while the level of H2O2 in galls depended on the species. The presence of galls of all species on oak leaves caused an increase of electrolyte leakage and lipid peroxidation level. A significant induction of GPX activity was observed in the leaves with galls of all species, indicating stress induction. Conversely, the decrease in APX activity in both leaves with galls and galled tissues exposed to feeding of all cynipid species.
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Affiliation(s)
- Izabela Kot
- Department of Plant Protection, University of Life Sciences in Lublin, Leszczynskiego, Lublin, Poland
| | - Katarzyna Rubinowska
- Department of Plant Physiology, University of Life Sciences in Lublin, Akademicka, Lublin, Poland
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Ruuhola T, Nybakken L, Randriamanana T, Lavola A, Julkunen-Tiitto R. Effects of long-term UV-exposure and plant sex on the leaf phenoloxidase activities and phenolic concentrations of Salix myrsinifolia (Salisb.). PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2018; 126:55-62. [PMID: 29501893 DOI: 10.1016/j.plaphy.2018.02.025] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Revised: 02/08/2018] [Accepted: 02/23/2018] [Indexed: 05/24/2023]
Abstract
The accumulation of flavonoids on the leaf surface is a well-characterized protective mechanism against UV-B radiation. Other protective mechanisms, such as the induction of antioxidative enzymes and peroxidase-mediated lignification may also be important. The effects of UV-B radiation have mainly been considered in short-term studies, whereas ecologically more relevant long-term field studies are still rare. Here we examined the effects of long-term exposure to enhanced UV-B radiation on the activities of two antioxidative enzymes, polyphenol oxidase (PPO; EC 1.10.2.2 and EC 1.14.18.1) and guaiacol peroxidase (POD; EC 1.11.1.7), as well as the phenolic concentrations in two sexes of the dioecious species, Salix myrsinifolia. After three consecutive growth seasons with enhanced UV-B radiation, we found that PPO activity was decreased by UV radiation in male plants, which might explain their lower UV-B tolerance when compared to female plants. In addition, male plants had higher specific activity than did female plants under ambient conditions, supporting the idea that males of S. myrsinifolia are generally more growth-oriented than females. By contrast, neither UV treatment nor sex had significant effects on the POD activities of willows. Gender differences in the concentrations of phenolic compounds are in line with the general concept that males are less well defended than females. We suggest that the inability to increase PPO and POD activity, along with lower accumulation of UV-B absorbing compounds under UV-B exposure, might be one of the reasons why males had thinner leaves and were less tolerant of UV-B than were females.
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Affiliation(s)
- Teija Ruuhola
- Department of Environmental and Biological Sciences, Natural Products Laboratory, University of Eastern Finland (UEF), P.O. Box, 111, FI-80101, Joensuu, Finland
| | - Line Nybakken
- Department of Environmental and Biological Sciences, Natural Products Laboratory, University of Eastern Finland (UEF), P.O. Box, 111, FI-80101, Joensuu, Finland; Department of Ecology and Natural Resource Management, Norwegian University of Life Sciences, P.O. Box 5003, NO-1432 Ås, Norway
| | - Tendry Randriamanana
- Department of Environmental and Biological Sciences, Natural Products Laboratory, University of Eastern Finland (UEF), P.O. Box, 111, FI-80101, Joensuu, Finland.
| | - Anu Lavola
- Department of Environmental and Biological Sciences, Natural Products Laboratory, University of Eastern Finland (UEF), P.O. Box, 111, FI-80101, Joensuu, Finland
| | - Riitta Julkunen-Tiitto
- Department of Environmental and Biological Sciences, Natural Products Laboratory, University of Eastern Finland (UEF), P.O. Box, 111, FI-80101, Joensuu, Finland
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Feistel F, Paetz C, Menezes RC, Veit D, Schneider B. Acylated Quinic Acids Are the Main Salicortin Metabolites in the Lepidopteran Specialist Herbivore Cerura vinula. J Chem Ecol 2018; 44:497-509. [PMID: 29549572 DOI: 10.1007/s10886-018-0945-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Revised: 03/04/2018] [Accepted: 03/08/2018] [Indexed: 11/25/2022]
Abstract
Salicortin is a phenolic glucoside produced in Salicaceae as a chemical defense against herbivory. The specialist lepidopteran herbivorous larvae of Cerura vinula are able to overcome this defense. We examined the main frass constituents of C. vinula fed on Populus nigra leaves, and identified 11 quinic acid derivatives with benzoate and/or salicylate substitution. We asked whether the compounds are a result of salicortin breakdown and sought answers by carrying out feeding experiments with highly 13C-enriched salicortin. Using HRMS and NMR analyses, we were able to confirm that salicortin metabolism in C. vinula proceeds through deglucosylation and ester hydrolysis, after which saligenin is oxidatively transformed into salicylic acid and, eventually, conjugated to quinic acid. To the best of our knowledge, this is the first report of a detoxification pathway based on conjugation with quinic acid.
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Affiliation(s)
- Felix Feistel
- Max Planck Institute for Chemical Ecology, Hans-Knöll-Straße 8, Beutenberg Campus, D-07745, Jena, Germany
| | - Christian Paetz
- Max Planck Institute for Chemical Ecology, Hans-Knöll-Straße 8, Beutenberg Campus, D-07745, Jena, Germany
| | - Riya C Menezes
- Max Planck Institute for Chemical Ecology, Hans-Knöll-Straße 8, Beutenberg Campus, D-07745, Jena, Germany
| | - Daniel Veit
- Max Planck Institute for Chemical Ecology, Hans-Knöll-Straße 8, Beutenberg Campus, D-07745, Jena, Germany
| | - Bernd Schneider
- Max Planck Institute for Chemical Ecology, Hans-Knöll-Straße 8, Beutenberg Campus, D-07745, Jena, Germany.
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Acquiring nutrients from tree leaves: effects of leaf maturity and development type on a generalist caterpillar. Oecologia 2017; 184:59-73. [PMID: 28342011 DOI: 10.1007/s00442-017-3854-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Accepted: 03/15/2017] [Indexed: 10/19/2022]
Abstract
The rapid growth and prolific reproduction of many insect herbivores depend on the efficiencies and rates with which they acquire nutrients from their host plants. However, little is known about how nutrient assimilation efficiencies are affected by leaf maturation or how they vary between plant species. Recent work showed that leaf maturation can greatly decrease the protein assimilation efficiency (PAE) of Lymantria dispar caterpillars on some tree species, but not on species in the willow family (Salicaceae). One trait of many species in the Salicaceae that potentially affects PAE is the continuous (or "indeterminate") development of leaves throughout the growing season. To improve our understanding of the temporal and developmental patterns of nutrient availability for tree-feeding insects, this study tested two hypotheses: nutrients (protein and carbohydrate) are more efficiently assimilated from immature than mature leaves, and, following leaf maturation, nutrients are more efficiently assimilated from indeterminate than determinate tree species. The nutritional physiology and growth of a generalist caterpillar (L. dispar) were measured on five determinate and five indeterminate tree species while their leaves were immature and again after they were mature. In support of the first hypothesis, caterpillars that fed on immature leaves had significantly higher PAE and carbohydrate assimilation efficiency (CAE), as well as higher protein assimilation rates and growth rates, than larvae that fed on mature leaves. Contrary to the second hypothesis, caterpillars that fed on mature indeterminate tree leaves did not have higher PAE than those that fed on mature determinate leaves, while CAE differed by only 3% between tree development types. Instead, "high-PAE" and "low-PAE" tree species were found across taxonomic and development categories. The results of this study emphasize the importance of physiological mechanisms, such as nutrient assimilation efficiency, to explain the large variation in host plant quality for insect herbivores.
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Scully ED, Donze-Reiner T, Wang H, Eickhoff TE, Baxendale F, Twigg P, Kovacs F, Heng-Moss T, Sattler SE, Sarath G. Identification of an orthologous clade of peroxidases that respond to feeding by greenbugs (Schizaphis graminum) in C 4 grasses. FUNCTIONAL PLANT BIOLOGY : FPB 2016; 43:1134-1148. [PMID: 32480533 DOI: 10.1071/fp16104] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Accepted: 07/29/2016] [Indexed: 06/11/2023]
Abstract
Knowledge of specific peroxidases that respond to aphid herbivory is limited in C4 grasses, but could provide targets for improving defence against these pests. A sorghum (Sorghum bicolor (L.) Moench) peroxidase (SbPrx-1; Sobic.002G416700) has been previously linked to biotic stress responses, and was the starting point for this study. Genomic analyses indicated that SbPrx-1 was part of a clade of five closely related peroxidase genes occurring within a ~30kb region on chromosome 2 of the sorghum genome. Comparison of this ~30-kb region to syntenic regions in switchgrass (Panicum virgatum L.) and foxtail millet (Setaria italica L.) identified similar related clusters of peroxidases. Infestation of a susceptible sorghum cultivar with greenbugs (Shizaphis graminum Rondani) induced three of the five peroxidases. Greenbug infestation of switchgrass and foxtail millet plants showed similar inductions of peroxidases. SbPrx-1 was also induced in response to aphid herbivory in a greenbug-resistant sorghum line, Cargill 607E. These data indicate that this genomic region of C4 grasses could be valuable as a marker to assess potential insect resistance in C4 grasses.
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Affiliation(s)
- Erin D Scully
- Stored Product Insect and Engineering Research Unit, Center for Grain and Animal Health Research USDA-ARS, Manhattan, KS 66502, USA
| | | | - Haichuan Wang
- Department of Entomology, University of Nebraska-Lincoln, Lincoln, NE 68583, USA
| | - Thomas E Eickhoff
- Department of Entomology, University of Nebraska-Lincoln, Lincoln, NE 68583, USA
| | - Frederick Baxendale
- Department of Entomology, University of Nebraska-Lincoln, Lincoln, NE 68583, USA
| | - Paul Twigg
- Department of Biology, University of Nebraska-Kearney, Kearney, NE 68849, USA
| | - Frank Kovacs
- Department of Chemistry, University of Nebraska-Kearney, Kearney, NE 68849, USA
| | - Tiffany Heng-Moss
- Department of Entomology, University of Nebraska-Lincoln, Lincoln, NE 68583, USA
| | - Scott E Sattler
- Grain, Forage and Bioenergy Research Unit, USDA-ARS, Lincoln, NE 68583, USA
| | - Gautam Sarath
- Grain, Forage and Bioenergy Research Unit, USDA-ARS, Lincoln, NE 68583, USA
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Caretto S, Linsalata V, Colella G, Mita G, Lattanzio V. Carbon Fluxes between Primary Metabolism and Phenolic Pathway in Plant Tissues under Stress. Int J Mol Sci 2015; 16:26378-94. [PMID: 26556338 PMCID: PMC4661826 DOI: 10.3390/ijms161125967] [Citation(s) in RCA: 121] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Revised: 10/23/2015] [Accepted: 10/26/2015] [Indexed: 12/18/2022] Open
Abstract
Higher plants synthesize an amazing diversity of phenolic secondary metabolites. Phenolics are defined secondary metabolites or natural products because, originally, they were considered not essential for plant growth and development. Plant phenolics, like other natural compounds, provide the plant with specific adaptations to changing environmental conditions and, therefore, they are essential for plant defense mechanisms. Plant defensive traits are costly for plants due to the energy drain from growth toward defensive metabolite production. Being limited with environmental resources, plants have to decide how allocate these resources to various competing functions. This decision brings about trade-offs, i.e., promoting some functions by neglecting others as an inverse relationship. Many studies have been carried out in order to link an evaluation of plant performance (in terms of growth rate) with levels of defense-related metabolites. Available results suggest that environmental stresses and stress-induced phenolics could be linked by a transduction pathway that involves: (i) the proline redox cycle; (ii) the stimulated oxidative pentose phosphate pathway; and, in turn, (iii) the reduced growth of plant tissues.
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Affiliation(s)
- Sofia Caretto
- Institute of Sciences of Food Production, National Research Council, Via Provinciale Lecce-Monteroni, 73100 Lecce, Italy.
| | - Vito Linsalata
- Institute of Sciences of Food Production, National Research Council, Via Amendola, 122/O, 70126 Bari, Italy.
| | - Giovanni Colella
- Institute of Sciences of Food Production, National Research Council, Via Provinciale Lecce-Monteroni, 73100 Lecce, Italy.
| | - Giovanni Mita
- Institute of Sciences of Food Production, National Research Council, Via Provinciale Lecce-Monteroni, 73100 Lecce, Italy.
| | - Vincenzo Lattanzio
- Department of Sciences of Agriculture, Food and Environment, University of Foggia, Via Napoli 25, 71100 Foggia, Italy.
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Phenolic Compounds and Their Fates In Tropical Lepidopteran Larvae: Modifications In Alkaline Conditions. J Chem Ecol 2015; 41:822-36. [PMID: 26364295 DOI: 10.1007/s10886-015-0620-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Revised: 03/26/2015] [Accepted: 08/10/2015] [Indexed: 10/23/2022]
Abstract
Lepidopteran larvae encounter a variety of phenolic compounds while consuming their host plants. Some phenolics may oxidize under alkaline conditions prevailing in the larval guts, and the oxidation products may cause oxidative stress to the larvae. In this study, we aimed to find new ways to predict how phenolic compounds may be modified in the guts of herbivorous larvae. To do so, we studied the ease of oxidation of phenolic compounds from 12 tropical tree species. The leaf extracts were incubated in vitro in alkaline conditions, and the loss of total phenolics during incubation was used to estimate the oxidizability of extracts. The phenolic profiles of the leaf extracts before and after incubation were compared, revealing that some phenolic compounds were depleted during incubation. The leaves of the 12 tree species were each fed to 12 species of lepidopteran larvae that naturally feed on these trees. The phenolic profiles of larval frass were compared to those of in vitro incubated leaf extracts. These comparisons showed that the phenolic profiles of alkali-treated samples and frass samples were similar in many cases. This suggested that certain phenolics, such as ellagitannins, proanthocyanidins, and galloylquinic acid derivatives were modified by the alkaline pH of the larval gut. In other cases, the chromatographic profiles of frass and in vitro incubated leaf extracts were not similar, and new modifications of phenolics were detected in the frass. We conclude that the actual fates of phenolics in vivo are often more complicated than can be predicted by a simple in vitro method.
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Caseys C, Stritt C, Glauser G, Blanchard T, Lexer C. Effects of hybridization and evolutionary constraints on secondary metabolites: the genetic architecture of phenylpropanoids in European populus species. PLoS One 2015; 10:e0128200. [PMID: 26010156 PMCID: PMC4444209 DOI: 10.1371/journal.pone.0128200] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2015] [Accepted: 04/24/2015] [Indexed: 12/18/2022] Open
Abstract
The mechanisms responsible for the origin, maintenance and evolution of plant secondary metabolite diversity remain largely unknown. Decades of phenotypic studies suggest hybridization as a key player in generating chemical diversity in plants. Knowledge of the genetic architecture and selective constraints of phytochemical traits is key to understanding the effects of hybridization on plant chemical diversity and ecological interactions. Using the European Populus species P. alba (White poplar) and P. tremula (European aspen) and their hybrids as a model, we examined levels of inter- and intraspecific variation, heritabilities, phenotypic correlations, and the genetic architecture of 38 compounds of the phenylpropanoid pathway measured by liquid chromatography and mass spectrometry (UHPLC-MS). We detected 41 quantitative trait loci (QTL) for chlorogenic acids, salicinoids and flavonoids by genetic mapping in natural hybrid crosses. We show that these three branches of the phenylpropanoid pathway exhibit different geographic patterns of variation, heritabilities, and genetic architectures, and that they are affected differently by hybridization and evolutionary constraints. Flavonoid abundances present high species specificity, clear geographic structure, and strong genetic determination, contrary to salicinoids and chlorogenic acids. Salicinoids, which represent important defence compounds in Salicaceae, exhibited pronounced genetic correlations on the QTL map. Our results suggest that interspecific phytochemical differentiation is concentrated in downstream sections of the phenylpropanoid pathway. In particular, our data point to glycosyltransferase enzymes as likely targets of rapid evolution and interspecific differentiation in the 'model forest tree' Populus.
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Affiliation(s)
- Celine Caseys
- Unit of Ecology and Evolution, Department of Biology, University of Fribourg, Fribourg, Switzerland
- Department of Botany and Biodiversity Research Centre, University of British Columbia, Vancouver, Canada
| | - Christoph Stritt
- Unit of Ecology and Evolution, Department of Biology, University of Fribourg, Fribourg, Switzerland
| | - Gaetan Glauser
- Neuchâtel Platform of Analytical Chemistry, Faculty of science, University of Neuchâtel, Neuchâtel, Switzerland
| | - Thierry Blanchard
- Unit of Ecology and Evolution, Department of Biology, University of Fribourg, Fribourg, Switzerland
| | - Christian Lexer
- Unit of Ecology and Evolution, Department of Biology, University of Fribourg, Fribourg, Switzerland
- Department of Botany and Biodiversity Research, University of Vienna, Vienna, Austria
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15
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Vihakas M, Pälijärvi M, Karonen M, Roininen H, Salminen JP. Rapid estimation of the oxidative activities of individual phenolics in crude plant extracts. PHYTOCHEMISTRY 2014; 103:76-84. [PMID: 24792346 DOI: 10.1016/j.phytochem.2014.02.019] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2013] [Revised: 01/17/2014] [Accepted: 02/28/2014] [Indexed: 05/09/2023]
Abstract
Previous studies of purified phenolic compounds have revealed that some phenolics, especially ellagitannins, can autoxidise under alkaline conditions, which predominate in the midgut of lepidopteran larvae. To facilitate screening for the pro-oxidant activities of all types of phenolic compounds from crude plant extracts, we developed a method that combined our recent spectrophotometric bioactivity method with an additional chromatographic step via UPLC-DAD-MS. This method allowed us to estimate the total pro-oxidant capacities of crude extracts from 12 plant species and to identify the individual phenolic compounds that were responsible for the detected activities. It was found that the pro-oxidant capacities of the plant species (i.e., the concentrations of the easily-oxidised phenolics) varied from 0 to 57 mg/g dry wt, representing from 0% to 46% of the total phenolics from different species. UPLC-DAD-MS analysis revealed that most flavonol and flavone glycosides were only slightly affected by alkaline conditions, thus indicating their low pro-oxidant activity. Interestingly, myricetin-type compounds differed from the other flavonoids, as their concentrations decreased strongly due to alkaline incubation. The same effect was detected for hydrolysable tannins and prodelphinidins, suggesting that a pyrogallol sub-structure could be a key structural component that partially explains their easy oxidation at high pH. Other types of phenolic compounds, such as hydroxycinnamic acids, were relatively active, as well. These findings demonstrate that this method displays the potential to identify most of the active and inactive pro-oxidant phenolic compounds in various plant species.
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Affiliation(s)
- Matti Vihakas
- Laboratory of Organic Chemistry and Chemical Biology, Department of Chemistry, University of Turku, FI-20014, Finland.
| | - Maija Pälijärvi
- Laboratory of Organic Chemistry and Chemical Biology, Department of Chemistry, University of Turku, FI-20014, Finland
| | - Maarit Karonen
- Laboratory of Organic Chemistry and Chemical Biology, Department of Chemistry, University of Turku, FI-20014, Finland
| | - Heikki Roininen
- Department of Biology, University of Eastern Finland, P.O. Box 111, FI-80101 Joensuu, Finland
| | - Juha-Pekka Salminen
- Laboratory of Organic Chemistry and Chemical Biology, Department of Chemistry, University of Turku, FI-20014, Finland
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16
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Boeckler GA, Gershenzon J, Unsicker SB. Gypsy Moth Caterpillar Feeding has Only a Marginal Impact on Phenolic Compounds in Old-Growth Black Poplar. J Chem Ecol 2013; 39:1301-12. [DOI: 10.1007/s10886-013-0350-8] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2013] [Revised: 09/18/2013] [Accepted: 09/19/2013] [Indexed: 10/26/2022]
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17
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Gayatridevi S, Jayalakshmi SK, Mulimani VH, Sreeramulu K. Salicylic acid and salicylic acid sensitive and insensitive catalases in different genotypes of chickpea against Fusarium oxysporum f. sp. ciceri. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2013; 19:529-36. [PMID: 24431522 PMCID: PMC3781282 DOI: 10.1007/s12298-013-0184-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Differential expression of catalase isozymes in different genotypes of chickpea resistant genotypes- A1, JG-315, JG-11, WR-315, R1-315, Vijaya, ICCV-15017, GBS-964, GBM-10, and susceptible genotypes- JG-62, MNK, ICCV-08321, ICCV-08311, KW-104, ICCV-08123, ICC-4951, ICC-11322, ICC-08116 for wilt disease caused by Fusarium oxysporum. f. sp. ciceri (Foc) was analyzed. Salicylic acid (SA) and H2O2 concentrations were determined in control as well as in plants infected with F. ciceri and found that the high and low levels of salicylic acid and H2O2 in resistant and susceptible genotypes of chickpea respectively. Catalase isozyme activities were detected in the gel and found that no induction of new catalases was observed in all the resistant genotypes and their some of the native catalase isozymes were inhibited; whereas, induction of multiple catalase isozymes was observed in all the screened susceptible genotypes and their activities were not inhibited upon Foc or SA treatments. The above results support the possible role of these isozymes as a marker to identify which genotype of chickpea is expressing systemic acquired resistance.
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Affiliation(s)
- S. Gayatridevi
- />Department of Biochemistry, Gulbarga University, Gulbarga, 585 106 India
| | - S. K. Jayalakshmi
- />Agricultural College, University of Agricultural Sciences, Raichur, Gulbarga, 585 103 India
| | - V. H. Mulimani
- />Department of Biochemistry, Gulbarga University, Gulbarga, 585 106 India
| | - K. Sreeramulu
- />Department of Biochemistry, Gulbarga University, Gulbarga, 585 106 India
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18
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Kawano T, Bouteau F. Crosstalk between intracellular and extracellular salicylic acid signaling events leading to long-distance spread of signals. PLANT CELL REPORTS 2013; 32:1125-38. [PMID: 23689257 DOI: 10.1007/s00299-013-1451-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2013] [Revised: 04/22/2013] [Accepted: 04/23/2013] [Indexed: 05/08/2023]
Abstract
It is well recognized that salicylic acid (SA) acts as a natural signaling molecule involved in both local and systemic plant defense responses upon attacks by pathogens. Recently, cellular SA receptors and a number of SA-related phloem-mobile signals were identified. Here, we compare the old and up-to-date concepts of plant defense signaling events involving SA. Finally, the crosstalk between intracellular and extracellular SA signaling events leading to long-distance spread of signals was outlined by focusing on the modes of both the short- and long-distance signaling events involving the actions of SA. For the above purpose, two distinct conceptual models for local SA perception and signaling mechanisms in the intracellular and extracellular paths (referred to as models i and ii, respectively) were proposed. In addition to two local SA perception models, we propose that the long-distance SA action could be attributed to three different modes, namely, (iii) local increase in SA followed by transport of SA and SA intermediates, (iv) systemic propagation of SA-derived signals with both chemical and electrical natures without direct movement of SA, and (v) integrated crosstalk allowing alternately repeated secondary signal propagation and biosynthesis of SA and/or conversion of inert SA intermediates to free SA finally contributing to the systemic spread of SA-derived signals. We review here that the long-distance SA signaling events (models iii-v), inevitably involve the mechanisms described in the local signaling models (models i and ii) as the key pieces of the crosstalk.
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Affiliation(s)
- Tomonori Kawano
- Faculty and Graduate School of Environmental Engineering, The University of Kitakyushu, Kitakyushu, Japan.
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19
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Barbehenn RV, Kochmanski J. Searching for synergism: effects of combinations of phenolic compounds and other toxins on oxidative stress in Lymantria dispar caterpillars. CHEMOECOLOGY 2013. [DOI: 10.1007/s00049-013-0136-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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20
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Proteome Analysis of Rice (Oryza sativa L.) Mutants Reveals Differentially Induced Proteins during Brown Planthopper (Nilaparvata lugens) Infestation. Int J Mol Sci 2013; 14:3921-45. [PMID: 23434671 PMCID: PMC3588078 DOI: 10.3390/ijms14023921] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2012] [Revised: 01/20/2013] [Accepted: 01/22/2013] [Indexed: 01/02/2023] Open
Abstract
Although rice resistance plays an important role in controlling the brown planthopper (BPH), Nilaparvata lugens, not all varieties have the same level of protection against BPH infestation. Understanding the molecular interactions in rice defense response is an important tool to help to reveal unexplained processes that underlie rice resistance to BPH. A proteomics approach was used to explore how wild type IR64 and near-isogenic rice mutants with gain and loss of resistance to BPH respond during infestation. A total of 65 proteins were found markedly altered in wild type IR64 during BPH infestation. Fifty-two proteins associated with 11 functional categories were identified using mass spectrometry. Protein abundance was less altered at 2 and 14 days after infestation (DAI) (T1, T2, respectively), whereas higher protein levels were observed at 28 DAI (T3). This trend diminished at 34 DAI (T4). Comparative analysis of IR64 with mutants showed 22 proteins that may be potentially associated with rice resistance to the brown planthopper (BPH). Ten proteins were altered in susceptible mutant (D1131) whereas abundance of 12 proteins including S-like RNase, Glyoxalase I, EFTu1 and Salt stress root protein “RS1” was differentially changed in resistant mutant (D518). S-like RNase was found in greater quantities in D518 after BPH infestation but remained unchanged in IR64 and decreased in D1131. Taken together, this study shows a noticeable level of protein abundance in the resistant mutant D518 compared to the susceptible mutant D1131 that may be involved in rendering enhanced level of resistance against BPH.
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21
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Barbehenn RV, Niewiadomski J, Kochmanski J, Constabel CP. Limited effect of reactive oxygen species on the composition of susceptible essential amino acids in the midguts of Lymantria dispar caterpillars. ARCHIVES OF INSECT BIOCHEMISTRY AND PHYSIOLOGY 2012; 81:160-177. [PMID: 22961657 DOI: 10.1002/arch.21065] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The essential amino acids (EAAs) arginine, histidine, lysine, and methionine, as well as cysteine (semiessential), are believed to be susceptible to reactions with reactive oxygen species (ROS) in biological systems. The decreased availability of these EAAs could harm insect nutrition, since several of them can also be limiting for protein synthesis. However, no in vivo studies have quantified the effect of ROS in the midguts of insect herbivores on EAA composition. This study examined the association between elevated levels of ROS in the midgut fluid of Lymantria dispar caterpillars and the compositions of EAAs (protein-bound + protein-free) in their midgut fluid and frass. Contrary to expectation, the compositions of EAAs were not significantly decreased by ROS in midgut fluid ex vivo when incubated with phenolic compounds. Two in vivo comparisons of low- and high-ROS-producing leaves also showed similar results: there were no significant decreases in the compositions of EAAs in the midgut fluids and/or frass of larvae with elevated levels of ROS in their midguts. In addition, waste nitrogen excretion was not significantly increased from larvae on high-ROS treatments, as would be expected if ROS produced unbalanced EAA compositions. These results suggest that L. dispar larvae are able to tolerate elevated levels of ROS in their midguts without nutritionally significant changes in the compositions of susceptible EAAs in their food.
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Affiliation(s)
- Raymond V Barbehenn
- Department of Molecular, Cellular and Developmental Biology, University of Michigan, Ann Arbor, MI 48109, USA.
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Peptide toxin glacontryphan-M is present in the wings of the butterfly Hebomoia glaucippe (Linnaeus, 1758) (Lepidoptera: Pieridae). Proc Natl Acad Sci U S A 2012; 109:17920-4. [PMID: 23071323 DOI: 10.1073/pnas.1209632109] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Protein profiling has revealed the presence of glacontryphan-M, a peptide toxin identified only in the sea snail genus Conus, in the wings of Hebomoia glaucippe (HG). The wings and body of HG were homogenized and the proteins were extracted and analyzed by 2D gel electrophoresis with subsequent in-gel digestion. Posttranslational protein modifications were detected and analyzed by nano-LC-MS/MS. An antibody was generated against glacontryphan-M, and protein extracts from the wings of HG samples from Malaysia, Indonesia, and the Philippines were tested by immunoblotting. Glacontryphan-M was unambiguously identified in the wings of HG containing the following posttranslational protein modifications: monoglutamylation at E55, methylation at E53, quinone modification at W61, cyanylation at C56, and amidation of the C terminus at G63. Immunoblotting revealed the presence of the toxin in the wings of HG from all origins, showing a single band for glacontryphan-M in HG samples from Malaysia and Philippines and a double band in HG samples from Indonesia. Intriguingly, sequence analysis indicated that the Conus glacontryphan is identical to that of HG. The toxin may function as a defense against diverse predators, including ants, mantes, spiders, lizards, green frogs, and birds.
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Mohanta TK, Occhipinti A, Atsbaha Zebelo S, Foti M, Fliegmann J, Bossi S, Maffei ME, Bertea CM. Ginkgo biloba responds to herbivory by activating early signaling and direct defenses. PLoS One 2012; 7:e32822. [PMID: 22448229 PMCID: PMC3308967 DOI: 10.1371/journal.pone.0032822] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2012] [Accepted: 02/06/2012] [Indexed: 01/03/2023] Open
Abstract
Background Ginkgo biloba (Ginkgoaceae) is one of the most ancient living seed plants and is regarded as a living fossil. G. biloba has a broad spectrum of resistance or tolerance to many pathogens and herbivores because of the presence of toxic leaf compounds. Little is known about early and late events occurring in G. biloba upon herbivory. The aim of this study was to assess whether herbivory by the generalist Spodoptera littoralis was able to induce early signaling and direct defense in G. biloba by evaluating early and late responses. Methodology/Principal Findings Early and late responses in mechanically wounded leaves and in leaves damaged by S. littoralis included plasma transmembrane potential (Vm) variations, time-course changes in both cytosolic calcium concentration ([Ca2+]cyt) and H2O2 production, the regulation of genes correlated to terpenoid and flavonoid biosynthesis, the induction of direct defense compounds, and the release of volatile organic compounds (VOCs). The results show that G. biloba responded to hebivory with a significant Vm depolarization which was associated to significant increases in both [Ca2+]cyt and H2O2. Several defense genes were regulated by herbivory, including those coding for ROS scavenging enzymes and the synthesis of terpenoids and flavonoids. Metabolomic analyses revealed the herbivore-induced production of several flavonoids and VOCs. Surprisingly, no significant induction by herbivory was found for two of the most characteristic G. biloba classes of bioactive compounds; ginkgolides and bilobalides. Conclusions/Significance By studying early and late responses of G. biloba to herbivory, we provided the first evidence that this “living fossil” plant responds to herbivory with the same defense mechanisms adopted by the most recent angiosperms.
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Affiliation(s)
- Tapan Kumar Mohanta
- Plant Physiology Unit, Department of Life Sciences and Systems Biology, Innovation Centre, University of Turin, Turin, Italy
| | - Andrea Occhipinti
- Plant Physiology Unit, Department of Life Sciences and Systems Biology, Innovation Centre, University of Turin, Turin, Italy
| | - Simon Atsbaha Zebelo
- Plant Physiology Unit, Department of Life Sciences and Systems Biology, Innovation Centre, University of Turin, Turin, Italy
| | - Maria Foti
- Plant Physiology Unit, Department of Life Sciences and Systems Biology, Innovation Centre, University of Turin, Turin, Italy
| | - Judith Fliegmann
- INRA, Laboratoire des Interactions Plantes-Microorganismes (LIPM), UMR441, Castanet-Tolosan, France
| | - Simone Bossi
- Plant Physiology Unit, Department of Life Sciences and Systems Biology, Innovation Centre, University of Turin, Turin, Italy
| | - Massimo E. Maffei
- Plant Physiology Unit, Department of Life Sciences and Systems Biology, Innovation Centre, University of Turin, Turin, Italy
- * E-mail:
| | - Cinzia M. Bertea
- Plant Physiology Unit, Department of Life Sciences and Systems Biology, Innovation Centre, University of Turin, Turin, Italy
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War AR, Paulraj MG, War MY, Ignacimuthu S. Role of salicylic acid in induction of plant defense system in chickpea (Cicer arietinum L.). PLANT SIGNALING & BEHAVIOR 2011; 6:1787-92. [PMID: 22057329 PMCID: PMC3329353 DOI: 10.4161/psb.6.11.17685] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Salicylic acid (SA), a plant hormone plays an important role in induction of plant defense against a variety of biotic and abiotic stresses through morphological, physiological and biochemical mechanisms. A series of experiments were carried out to evaluate the biochemical response of the chickpea (Cicer arietinum L.) plants to a range of SA concentrations (1, 1.5, and 2 mM). Water treated plants were maintained as control. Activities of peroxidase (POD) and polyphenol oxidase (PPO) were evaluated and amounts of total phenols, hydrogen peroxide (H2O2), and proteins were calculated after 96 h of treatment. Plants responded very quickly to SA at 1.5 mM and showed higher induction of POD and PPO activities, besides the higher accumulation of phenols, H2O2 and proteins. Plants treated with SA at 2 mM showed phytotoxic symptoms. These results suggest that SA at 1.5 mM is safe to these plants and could be utilized for the induction of plant defense.
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Affiliation(s)
- Abdul Rashid War
- Entomology Research Institute, Loyola College; Chennai, Tamilnadu, India
| | | | | | - Savarimuthu Ignacimuthu
- Entomology Research Institute, Loyola College; Chennai, Tamilnadu, India
- Correspondence to: Savarimuthu Ignacimuthu,
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War AR, Paulraj MG, War MY, Ignacimuthu S. Herbivore- and elicitor-induced resistance in groundnut to Asian armyworm, Spodoptera litura (Fab.) (Lepidoptera: Noctuidae). PLANT SIGNALING & BEHAVIOR 2011; 6:1769-77. [PMID: 22042128 PMCID: PMC3329351 DOI: 10.4161/psb.6.11.17323] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Induced defense was studied in three groundnut genotypes ICGV 86699 (resistant), NCAc 343 (resistant) and TMV 2 (susceptible) in response to Spodoptera litura infestation and jasmonic acid (JA) application. The activity of the oxidative enzymes [peroxidase (POD) and polyphenol oxidase (PPO)] and the amounts other host plant defense components [total phenols, hydrogen peroxide (H2O2), malondialdehyde (MDA), and protein content] were recorded at 24, 48, 72 and 96 h in JA pretreated (one day before) plants and infested with S. litura, and JA application and simultaneous infestation with S. litura to understand the defense response of groundnut genotypes against S. litura damage. Data on plant damage, larval survival and larval weights were also recorded. There was a rapid increase in the activities of POD and PPO and in the quantities of total phenols, H2O2, MDA and protein content in the JA pretreated + S. litura infested plants. All the three genotypes showed quick response to JA application and S. litura infestation by increasing the defensive compounds. Among all the genotypes, higher induction was recorded in ICGV 86699 in most of the parameters. Reduced plant damage, low larval survival and larval weights were observed in JA pretreated plants. It suggests that pretreatment with elicitors, such as JA could provide more opportunity for plant defense against herbivores.
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Affiliation(s)
- Abdul Rashid War
- Entomology Research Institute, Loyola College; Chennai, Tamilnadu, India
| | | | | | - Savarimuthu Ignacimuthu
- Entomology Research Institute, Loyola College; Chennai, Tamilnadu, India
- Correspondence to: Savarimuthu Ignacimuthu,
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Boron fertilization enhances the induced defense of silver birch. J Chem Ecol 2011; 37:460-71. [PMID: 21487920 DOI: 10.1007/s10886-011-9948-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2010] [Revised: 03/10/2011] [Accepted: 04/03/2011] [Indexed: 10/18/2022]
Abstract
Boron (B) deficiency is a common micronutrient deficiency that has been reported to affect the phenolic metabolism of plants. Thus, it may play a role in defense against herbivorous animals. However, the role of B in a plant's resistance to herbivores has not received any particular attention from researchers. In this study, we tested the effects of B nutrition 1) on the biochemical and mechanical defenses of birches and the growth of seedlings, and 2) the resistance of seedlings to larvae of the autumnal moth, Epirrita autumnata. Boron fertilization improved the resistance of birch, which was shown as reduced pupal weight of the herbivore. However, B fertilized trees suffered from heavier defoliation than unfertilized ones due to compensation feeding of larvae. The growth of the seedlings was diminished, and several biochemical changes occurred in leaves of herbivore seedlings, and B also played a role in these changes. Polyphenoloxidases (PPOs) and peroxidases (PODs) and their substrates, chlorogenic acids, were induced by herbivory in B fertilized seedlings but not in unfertilized seedlings. The lower pupal weights and increased consumption of the herbivores were probably linked to the plants' phenoloxidase-mediated production of reactive quinones, which decrease the nutritive value. Herbivory upon new stems led to an increase in the number of resin glands that provide defense against mammalian herbivores. Herbivory also had a substantially negative effect on B concentration in leaves of B fertilized seedlings. We postulate that B nutrition of trees may play a significant role in the induced defense of birches.
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