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Gai YP, Zhao YN, Zhao HN, Yuan CZ, Yuan SS, Li S, Zhu BS, Ji XL. The Latex Protein MLX56 from Mulberry ( Morus multicaulis) Protects Plants against Insect Pests and Pathogens. FRONTIERS IN PLANT SCIENCE 2017; 8:1475. [PMID: 28878804 PMCID: PMC5572373 DOI: 10.3389/fpls.2017.01475] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2017] [Accepted: 08/08/2017] [Indexed: 05/06/2023]
Abstract
Biotic stresses are major constraints limiting the leaf quality and productivity of mulberry. MLX56 is a unique chitin-binding protein isolated from Shin-Ichinose (Morus alba) latex that displays toxicity against lepidopteran caterpillars. In this study, the full-length cDNA encoding MLX56 was isolated from Husang 32 (M. multicaulis) and designated HMLX56. Amino acid sequence analysis and protein modeling of three MLX56 proteins showed that they were highly conserved among Morus species. Tissue expression pattern analysis showed that the HMLX56 gene was strongly expressed in mulberry bark and leaves but only slightly expressed in fruits. In addition, analysis of GUS expression indicated that the promoter of HMLX56 showed higher transcriptional activity along the vascular strands, and its activity can be regulated by various environmental factors. Like the MLX56 protein from M. alba, the HMLX56 protein showed toxicity to Plutella xylostella. Moreover, when the HMLX56 gene was ectopically expressed in Arabidopsis, the transgenic plants showed enhanced resistance to aphids, the fungal pathogen Botrytis cinerea and the bacterial pathogen Pseudomonas syringae pv. tomato DC3000. Our data suggest that the HMLX56 protein has a lectin-like molecular structure consisting of two hevein-like chitin-binding domains which provide not only chitin-binding activities but also other mechanisms of defense. The information provided here improves our understanding of the potential functions and defense mechanisms of MLX56 proteins, enabling in-depth functional analysis of latex exudates and perhaps facilitating mulberry genetic improvement in the future.
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Affiliation(s)
- Ying-Ping Gai
- State Key Laboratory of Crop Biology, Shandong Agricultural UniversityTai’an, China
| | - Ya-Nan Zhao
- State Key Laboratory of Crop Biology, Shandong Agricultural UniversityTai’an, China
| | - Huai-Ning Zhao
- College of Forestry, Shandong Agricultural UniversityTai’an, China
| | - Chuan-Zhong Yuan
- College of Forestry, Shandong Agricultural UniversityTai’an, China
| | - Shuo-Shuo Yuan
- College of Forestry, Shandong Agricultural UniversityTai’an, China
| | - Shuo Li
- College of Forestry, Shandong Agricultural UniversityTai’an, China
| | - Bing-Sen Zhu
- State Key Laboratory of Crop Biology, Shandong Agricultural UniversityTai’an, China
| | - Xian-Ling Ji
- College of Forestry, Shandong Agricultural UniversityTai’an, China
- Mountain Tai Forest Ecosystem Research Station of State Forestry AdministrationTai’an, China
- *Correspondence: Xian-Ling Ji,
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Huber M, Bont Z, Fricke J, Brillatz T, Aziz Z, Gershenzon J, Erb M. A below-ground herbivore shapes root defensive chemistry in natural plant populations. Proc Biol Sci 2016; 283:20160285. [PMID: 27009228 DOI: 10.1098/rspb.2016.0285] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2016] [Accepted: 02/22/2016] [Indexed: 01/03/2023] Open
Abstract
Plants display extensive intraspecific variation in secondary metabolites. However, the selective forces shaping this diversity remain often unknown, especially below ground. Using Taraxacum officinale and its major native insect root herbivore Melolontha melolontha, we tested whether below-ground herbivores drive intraspecific variation in root secondary metabolites. We found that high M. melolontha infestation levels over recent decades are associated with high concentrations of major root latex secondary metabolites across 21 central European T. officinale field populations. By cultivating offspring of these populations, we show that both heritable variation and phenotypic plasticity contribute to the observed differences. Furthermore, we demonstrate that the production of the sesquiterpene lactone taraxinic acid β-D-glucopyranosyl ester (TA-G) is costly in the absence, but beneficial in the presence of M. melolontha, resulting in divergent selection of TA-G. Our results highlight the role of soil-dwelling insects for the evolution of plant defences in nature.
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Affiliation(s)
- Meret Huber
- Root Herbivore Interactions Group, Department of Biochemistry, Max Planck Institute for Chemical Ecology, Jena, Germany
| | - Zoe Bont
- Institute of Plant Sciences, University of Bern, Bern, Switzerland
| | - Julia Fricke
- Institute of Plant Sciences, University of Bern, Bern, Switzerland
| | - Théo Brillatz
- Root Herbivore Interactions Group, Department of Biochemistry, Max Planck Institute for Chemical Ecology, Jena, Germany
| | - Zohra Aziz
- Root Herbivore Interactions Group, Department of Biochemistry, Max Planck Institute for Chemical Ecology, Jena, Germany
| | - Jonathan Gershenzon
- Department of Biochemistry, Max Planck Institute for Chemical Ecology, Jena, Germany
| | - Matthias Erb
- Root Herbivore Interactions Group, Department of Biochemistry, Max Planck Institute for Chemical Ecology, Jena, Germany Institute of Plant Sciences, University of Bern, Bern, Switzerland
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103
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Freitas CDT, Viana CA, Vasconcelos IM, Moreno FBB, Lima-Filho JV, Oliveira HD, Moreira RA, Monteiro-Moreira ACO, Ramos MV. First insights into the diversity and functional properties of chitinases of the latex of Calotropis procera. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2016; 108:361-371. [PMID: 27521700 DOI: 10.1016/j.plaphy.2016.07.028] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Accepted: 07/31/2016] [Indexed: 05/07/2023]
Abstract
Chitinases (EC 3.2.1.14) found in the latex of Calotropis procera (Ait) R. Br. were studied. The proteins were homogeneously obtained after two ion exchange chromatography steps. Most proteins were identified individually in 15 spots on 2-D gel electrophoresis with isoelectric points ranging from 4.6 to 6.0 and molecular masses extending from 27 to 30 kDa. Additionally, 66 kDa proteins were identified as chitinases in SDS-PAGE. Their identities were further confirmed by mass spectrometry (MS) analysis of the tryptic digests of each spot and MS analysis of the non-digested proteins. Positive reaction for Schiff's reagent suggested the proteins are glycosylated. The chitinases exhibited high catalytic activity toward to colloidal chitin at pH 5.0, and this activity underwent decay in the presence of increasing amounts of reducing agent dithiothreitol. Spore germination and hyphae growth of two phytopathogenic fungi were inhibited only marginally by the chitinases but were affected differently. This suggested a complex relationship might exist between the specificity of the proteins toward the fungal species. The chitinases showed potent insecticidal activity against the Bruchidae Callosobruchus maculatus, drastically reducing survival, larval weight and adult emergence. It is concluded that closely related chitinases are present in the latex of C. procera, and the first experimental evidence suggests these proteins are involved more efficiently in defence strategies against insects rather than fungi.
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Affiliation(s)
- Cleverson D T Freitas
- Departamento de Bioquímica e Biologia Molecular da Universidade Federal do Ceará, Campus do Pici, Cx. Postal 6033, Fortaleza, CE CEP 60451-970, Brazil.
| | - Carolina A Viana
- Departamento de Bioquímica e Biologia Molecular da Universidade Federal do Ceará, Campus do Pici, Cx. Postal 6033, Fortaleza, CE CEP 60451-970, Brazil
| | - Ilka M Vasconcelos
- Departamento de Bioquímica e Biologia Molecular da Universidade Federal do Ceará, Campus do Pici, Cx. Postal 6033, Fortaleza, CE CEP 60451-970, Brazil
| | - Frederico B B Moreno
- Centro de Ciências da Saúde, Universidade de Fortaleza (UNIFOR), Fortaleza, CE, Brazil
| | - José V Lima-Filho
- Departamento de Biologia, Universidade Federal Rural de Pernambuco, Recife, PE, Brazil
| | - Hermogenes D Oliveira
- Departamento de Bioquímica e Biologia Molecular da Universidade Federal do Ceará, Campus do Pici, Cx. Postal 6033, Fortaleza, CE CEP 60451-970, Brazil
| | - Renato A Moreira
- Centro de Ciências da Saúde, Universidade de Fortaleza (UNIFOR), Fortaleza, CE, Brazil
| | | | - Márcio V Ramos
- Departamento de Bioquímica e Biologia Molecular da Universidade Federal do Ceará, Campus do Pici, Cx. Postal 6033, Fortaleza, CE CEP 60451-970, Brazil.
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104
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Vigneshwaran V, Thirusangu P, Madhusudana S, Krishna V, Pramod SN, Prabhakar B. The latex sap of the ‘Old World Plant’ Lagenaria siceraria with potent lectin activity mitigates neoplastic malignancy targeting neovasculature and cell death. Int Immunopharmacol 2016; 39:158-171. [DOI: 10.1016/j.intimp.2016.07.024] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2016] [Revised: 07/18/2016] [Accepted: 07/22/2016] [Indexed: 01/13/2023]
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Nascimento DCDO, Ralph MT, Batista JEC, Silva DMF, Gomes-Filho MA, Alencar NM, Leal NC, Ramos MV, Lima-Filho JV. Latex protein extracts from Calotropis procera with immunomodulatory properties protect against experimental infections with Listeria monocytogenes. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2016; 23:745-753. [PMID: 27235713 DOI: 10.1016/j.phymed.2016.03.012] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Revised: 03/22/2016] [Accepted: 03/30/2016] [Indexed: 06/05/2023]
Abstract
BACKGROUND The latex from the medicinal plant Calotropis procera is often used in folk medicine against infectious and inflammatory diseases. PURPOSE In this study, we investigate a protein fraction with immunomodulatory properties, named LPPI, against experimental infections, in vitro and in vivo, with a virulent strain of Listeria monocytogenes. STUDY DESIGN LPPI was exposed to cultured macrophages or Swiss mice and then challenged with L. monocytogenes. METHODS Peritoneal macrophages were obtained from Swiss mice, and cultured in 96-well microplates. Soluble latex proteins (LP) were subjected to fractionation by ion-exchange chromatography. The major peak (LPPI) was added into wells at 10 or 100µg/ml. Albumin (100µg/ml) was used for comparison between protein treatments. After incubation for 1h at 5% CO2/ 37°C, the supernatant was discarded and 0.2ml of L. monocytogenes overnight culture was added in the wells. Following 4h and 24h infection, the cytokine mRNA expression was evaluated as well as the number of intracellular colony forming units. Swiss mice (n=16) were injected intraperitoneally (i.p.) with LPPI (5 and 10mg/kg) while the control mice received albumin (10mg/kg) or LP (10mg/kg). After 24h, all animal groups were challenged with L. monocytogenes (10(6) CFU/ ml), also by i.p. route. RESULTS LPPI was not toxic to uninfected macrophages (pMØ) and significantly increased mRNA expression of TNF-α, IL-6, IL-1β and iNOS. Following infection, cell viability was reduced by 50% in albumin-treated pMØ (control); but only 17% in pMØ treated with LPPI at 100µg/ml. In this case, LPPI increased expression of TNF-α and IL-6 whereas the number of bacterial colony-forming units was reduced 100-fold in comparison to control groups. Swiss mice pretreated with LPPI showed dose-dependent survival rates that reached 80%, while mice that received albumin died 1-3 days after infection. After 24h infection, leukocyte migration to the infectious foci was high in LPPI-treated mice whereas the number of viable bacteria in the peritoneal fluid, liver and bloodstream were significantly reduced. CONCLUSION We conclude that LPPI present immunomodulatory properties that are beneficial for prevention of systemic bacterial infections caused by the intracellular bacteria L. monocytogenes.
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Affiliation(s)
| | - Maria Taciana Ralph
- Departamento de Biologia, Universidade Federal Rural de Pernambuco, Recife-PE, Brazil
| | | | - Diogo Manoel Farias Silva
- Departamento de Morfologia e Fisiologia Animal, Universidade Federal Rural de Pernambuco, Recife-PE, Brazil
| | - Manoel Adrião Gomes-Filho
- Departamento de Morfologia e Fisiologia Animal, Universidade Federal Rural de Pernambuco, Recife-PE, Brazil
| | - Nylane Maria Alencar
- Departamento de Fisiologia e Farmacologia, Universidade Federal do Ceará, Fortaleza-CE, Brazil
| | - Nilma Cintra Leal
- Departamento de Microbiologia, Centro de Pesquisa Aggeu Magalhães, Fiocruz, Recife, PE
| | - Márcio Viana Ramos
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Ceará, Fortaleza-CE, Brazil
| | - Jose Vitor Lima-Filho
- Departamento de Biologia, Universidade Federal Rural de Pernambuco, Recife-PE, Brazil.
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106
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Patil CD, Borase HP, Suryawanshi RK, Patil SV. Trypsin inactivation by latex fabricated gold nanoparticles: A new strategy towards insect control. Enzyme Microb Technol 2016; 92:18-25. [PMID: 27542740 DOI: 10.1016/j.enzmictec.2016.06.005] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Revised: 05/10/2016] [Accepted: 06/09/2016] [Indexed: 12/26/2022]
Abstract
Before applying nanotechnologies in biomedical and environmental areas it is advised to study interactions of nanoparticles and other nanomaterials with biomacromolecule present in living system. Moreover there is scarcity of reports on interactions between nanoparticles and biomaterials. In present report a rapid, ecofriendly method of fabricating stable gold nanoparticles (AuNPs) using latex of Jatropha curcas is reported for the first time. AuNPs found to have characteristic absorption maxima centered at 540nm, multiple irregular shapes with size range from 20 to 50nm and have crystalline nature. Latex fabricated AuNPs were found to inhibit catalytic potential of trypsin (a vital enzyme responsible for digestion, insecticide resistance and in several disease conditions). The interactions between AuNPs and trypsin were analyzed by UV-vis spectrophotometry and microwave plasma-atomic emission spectrometry which suggests formation of trypsin-AuNPs complex responsible for lowering catalytic activity of trypsin. Transmission electron microscopy, Fourier transform infrared spectroscopy and particle size distribution studies further confirm complex formation between trypsin and AuNPs. Diverse interactions of metal nanoparticles with proteins such as covalent interaction, electrostatic interactions and binding to SH group of amino acid may be the reasons behind inhibition of trypsin activity. In vivo studies on serum of several vectors and agriculturally important pests supported instrumental results on AuNPs induced trypsin inhibition. This work will bring a new research direction to explore eco-friendly nanoparticle in insect control via inhibition of enzyme catalytic potential.
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Affiliation(s)
- Chandrashekhar D Patil
- School of Life Sciences, North Maharashtra University, Post Box 80, Jalgaon, 425001, Maharashtra, India
| | - Hemant P Borase
- School of Life Sciences, North Maharashtra University, Post Box 80, Jalgaon, 425001, Maharashtra, India
| | - Rahul K Suryawanshi
- School of Life Sciences, North Maharashtra University, Post Box 80, Jalgaon, 425001, Maharashtra, India
| | - Satish V Patil
- School of Life Sciences, North Maharashtra University, Post Box 80, Jalgaon, 425001, Maharashtra, India; North Maharashtra Microbial Culture Collection Centre (NMCC), North Maharashtra University, Post Box 80, Jalgaon, 425001, Maharashtra, India.
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107
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Konno K. A general parameterized mathematical food web model that predicts a stable green world in the terrestrial ecosystem. ECOL MONOGR 2016. [DOI: 10.1890/15-1420] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- Kotaro Konno
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO); Tsukuba, Ibaraki 305-8634 Japan
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108
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de Freitas CDT, da Cruz WT, Silva MZR, Vasconcelos IM, Moreno FBMB, Moreira RA, Monteiro-Moreira ACO, Alencar LMR, Sousa JS, Rocha BAM, Ramos MV. Proteomic analysis and purification of an unusual germin-like protein with proteolytic activity in the latex of Thevetia peruviana. PLANTA 2016; 243:1115-1128. [PMID: 26794967 DOI: 10.1007/s00425-016-2468-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2015] [Accepted: 01/10/2016] [Indexed: 06/05/2023]
Abstract
The latex from Thevetia peruviana is rich in plant defense proteins, including a 120 kDa cysteine peptidase with structural characteristics similar to germin-like proteins. More than 20,000 plant species produce latex, including Apocynaceae, Sapotaceae, Papaveraceae and Euphorbiaceae. To better understand the physiological role played by latex fluids, a proteomic analysis of Thevetia peruviana (Pers.) Schum latex was performed using two-dimensional gel electrophoresis and mass spectrometry. A total of 33 proteins (86 %) were identified, including storage proteins, a peptidase inhibitor, cysteine peptidases, peroxidases and osmotins. An unusual cysteine peptidase, termed peruvianin-I, was purified from the latex by a single chromatographic step involving gel filtration. The enzyme (glycoprotein) was inhibited by E-64 and iodoacetamide and exhibited high specific activity towards azocasein (K m 17.6 µM), with an optimal pH and temperature of 5.0-6.0 and 25-37 °C, respectively. Gel filtration chromatography, two-dimensional gel electrophoresis, and mass spectrometry revealed that peruvianin-I possesses 120 kDa, pI 4.0, and six subunits (20 kDa). A unique N-terminal amino acid sequence was obtained to oligomer and monomers of peruvianin-I (1ADPGPLQDFCLADLNSPLFINGYPCRNPALAISDDF36). High-resolution images from atomic force microscopy showed the homohexameric structure of peruvianin-I may be organized as a trimer of dimers that form a central channel similar to germin-like proteins. Peruvianin-I exhibited no oxalate oxidase and superoxide dismutase activity or antifungal effects. Peruvianin-I represents the first germin-like protein (GLP) with cysteine peptidase activity, an activity unknown in the GLP family so far.
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Affiliation(s)
- Cleverson D T de Freitas
- Departamento de Bioquímica e Biologia Molecular da Universidade Federal do Ceará, Campus do Pici, Cx. Postal 6033, Fortaleza, CE, CEP 60451-970, Brazil.
| | - Wallace T da Cruz
- Departamento de Bioquímica e Biologia Molecular da Universidade Federal do Ceará, Campus do Pici, Cx. Postal 6033, Fortaleza, CE, CEP 60451-970, Brazil
| | - Maria Z R Silva
- Departamento de Bioquímica e Biologia Molecular da Universidade Federal do Ceará, Campus do Pici, Cx. Postal 6033, Fortaleza, CE, CEP 60451-970, Brazil
| | - Ilka M Vasconcelos
- Departamento de Bioquímica e Biologia Molecular da Universidade Federal do Ceará, Campus do Pici, Cx. Postal 6033, Fortaleza, CE, CEP 60451-970, Brazil
| | | | - Renato A Moreira
- Centro de Ciências da Saúde da Universidade de Fortaleza, Fortaleza, CE, Brazil
| | | | - Luciana M R Alencar
- Departamento de Física da Universidade Federal do Ceará, Campus do Pici, Fortaleza, CE, Brazil
| | - Jeanlex S Sousa
- Departamento de Física da Universidade Federal do Ceará, Campus do Pici, Fortaleza, CE, Brazil
| | - Bruno A M Rocha
- Departamento de Bioquímica e Biologia Molecular da Universidade Federal do Ceará, Campus do Pici, Cx. Postal 6033, Fortaleza, CE, CEP 60451-970, Brazil
| | - Márcio V Ramos
- Departamento de Bioquímica e Biologia Molecular da Universidade Federal do Ceará, Campus do Pici, Cx. Postal 6033, Fortaleza, CE, CEP 60451-970, Brazil
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109
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Huber M, Epping J, Schulze Gronover C, Fricke J, Aziz Z, Brillatz T, Swyers M, Köllner TG, Vogel H, Hammerbacher A, Triebwasser-Freese D, Robert CAM, Verhoeven K, Preite V, Gershenzon J, Erb M. A Latex Metabolite Benefits Plant Fitness under Root Herbivore Attack. PLoS Biol 2016; 14:e1002332. [PMID: 26731567 PMCID: PMC4701418 DOI: 10.1371/journal.pbio.1002332] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Accepted: 11/18/2015] [Indexed: 11/19/2022] Open
Abstract
Plants produce large amounts of secondary metabolites in their shoots and roots and store them in specialized secretory structures. Although secondary metabolites and their secretory structures are commonly assumed to have a defensive function, evidence that they benefit plant fitness under herbivore attack is scarce, especially below ground. Here, we tested whether latex secondary metabolites produced by the common dandelion (Taraxacum officinale agg.) decrease the performance of its major native insect root herbivore, the larvae of the common cockchafer (Melolontha melolontha), and benefit plant vegetative and reproductive fitness under M. melolontha attack. Across 17 T. officinale genotypes screened by gas and liquid chromatography, latex concentrations of the sesquiterpene lactone taraxinic acid β-D-glucopyranosyl ester (TA-G) were negatively associated with M. melolontha larval growth. Adding purified TA-G to artificial diet at ecologically relevant concentrations reduced larval feeding. Silencing the germacrene A synthase ToGAS1, an enzyme that was identified to catalyze the first committed step of TA-G biosynthesis, resulted in a 90% reduction of TA-G levels and a pronounced increase in M. melolontha feeding. Transgenic, TA-G-deficient lines were preferred by M. melolontha and suffered three times more root biomass reduction than control lines. In a common garden experiment involving over 2,000 T. officinale individuals belonging to 17 different genotypes, high TA-G concentrations were associated with the maintenance of high vegetative and reproductive fitness under M. melolontha attack. Taken together, our study demonstrates that a latex secondary metabolite benefits plants under herbivore attack, a result that provides a mechanistic framework for root herbivore driven natural selection and evolution of plant defenses below ground.
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Affiliation(s)
- Meret Huber
- Root Herbivore Interactions Group, Max-Planck Institute for Chemical Ecology, Jena, Germany
- Department of Biochemistry, Max-Planck Institute for Chemical Ecology, Jena, Germany
| | - Janina Epping
- Fraunhofer Institute for Molecular Biology and Applied Ecology, Münster, Germany
| | | | - Julia Fricke
- Institute of Plant Sciences, University of Bern, Bern, Switzerland
| | - Zohra Aziz
- Root Herbivore Interactions Group, Max-Planck Institute for Chemical Ecology, Jena, Germany
- Department of Biochemistry, Max-Planck Institute for Chemical Ecology, Jena, Germany
| | - Théo Brillatz
- Root Herbivore Interactions Group, Max-Planck Institute for Chemical Ecology, Jena, Germany
- Department of Biochemistry, Max-Planck Institute for Chemical Ecology, Jena, Germany
| | - Michael Swyers
- Root Herbivore Interactions Group, Max-Planck Institute for Chemical Ecology, Jena, Germany
- Department of Biochemistry, Max-Planck Institute for Chemical Ecology, Jena, Germany
| | - Tobias G. Köllner
- Department of Biochemistry, Max-Planck Institute for Chemical Ecology, Jena, Germany
| | - Heiko Vogel
- Department of Entomology, Max-Planck Institute for Chemical Ecology, Jena, Germany
| | - Almuth Hammerbacher
- Department of Biochemistry, Max-Planck Institute for Chemical Ecology, Jena, Germany
| | - Daniella Triebwasser-Freese
- Root Herbivore Interactions Group, Max-Planck Institute for Chemical Ecology, Jena, Germany
- Department of Biochemistry, Max-Planck Institute for Chemical Ecology, Jena, Germany
- Institute of Plant Sciences, University of Bern, Bern, Switzerland
| | - Christelle A. M. Robert
- Root Herbivore Interactions Group, Max-Planck Institute for Chemical Ecology, Jena, Germany
- Institute of Plant Sciences, University of Bern, Bern, Switzerland
| | - Koen Verhoeven
- Netherlands Institute of Ecology, Wageningen, Netherlands
| | | | - Jonathan Gershenzon
- Department of Biochemistry, Max-Planck Institute for Chemical Ecology, Jena, Germany
| | - Matthias Erb
- Root Herbivore Interactions Group, Max-Planck Institute for Chemical Ecology, Jena, Germany
- Institute of Plant Sciences, University of Bern, Bern, Switzerland
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Hua J, Liu YC, Jing SX, Luo SH, Li SH. Macrocyclic Diterpenoids from the Latex of Euphorbia helioscopia. Nat Prod Commun 2015. [DOI: 10.1177/1934578x1501001206] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
One new jatrophane diterpenoid, 7α,9β,15β-triacetoxy-3β-benzoyloxy-14β-hydroxyjatropha-5 E,11 E-diene (3), together with four known macrocyclic diterpenoids, euphoheliosnoid A (1), epieuphoscopin B (2), euphohelioscopin A (4) and euphoscopin C (5), were isolated from the stem latex of Euphorbia helioscopia. Their structures were established by spectroscopic analyses. In the anti-inflammatory assay, euphohelioscopin A (4) exhibited moderate inhibitory activity on the release of cytokine TNF-α (IC50 = 23.7 ± 1.7 μM), IL-6 (IC50 = 46.1 ± 1.1 μM) and chemokine MCP-1 (IC50 = 33.7 ± 3.8 μM) in lipopolysaccharide (LPS) induced RAW 264.7 macrophages without notable cytotoxicity (IC50 > 80 μM).
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Affiliation(s)
- Juan Hua
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yan-Chun Liu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Shu-Xi Jing
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Shi-Hong Luo
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Sheng-Hong Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
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Sytwala S, Domsalla A, Melzig MF. Investigation of plant latices of Asteraceae and Campanulaceae regarding proteolytic activity. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2015; 97:117-123. [PMID: 26458257 DOI: 10.1016/j.plaphy.2015.09.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2015] [Revised: 09/01/2015] [Accepted: 09/21/2015] [Indexed: 06/05/2023]
Abstract
Occurrence of plant latices is widespread, there are more than 40 families of plants characterized to establish lactiferous structures. The appearance of hydrolytic active proteins, incorporated in latices is already characterized, and hydrolytic active proteins are considerable, and for several plant families, the occurrence of hydrolytic active proteins is already specified e.g. Apocynaceae Juss., Caricaceae Dumort, Euphorbiaceae Juss., Moraceae Gaudich and Papaveraceae Juss. In our investigation, focused on latex bearing plants of order Asterales, Asteraceae and Campanulaceae in particular. The present outcomes represent a comprehensive study, relating to the occurrence of proteolytic active enzymes of order Asterales for the first time. 131 different species of Asteraceae and Campanulaceae were tested, and the appearance of plant latex proteases were determined in different quantities. Proteolytic activity was investigated by inhibitory studies and determination of residual activity in the following, enable us to characterize the proteases. Most of the considered species exhibit a serine protease activity and a multiplicity of species exhibited two or more subclasses of proteases.
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Affiliation(s)
- Sonja Sytwala
- Institute of Pharmacy, Freie Universitaet, Berlin, Germany
| | - André Domsalla
- Institute of Pharmacy, Freie Universitaet, Berlin, Germany
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Gunawardana M, Hyde ER, Lahmeyer S, Dorsey BL, La Val TP, Mullen M, Yoo J, Knight R, Baum MM. Euphorbia plant latex is inhabited by diverse microbial communities. AMERICAN JOURNAL OF BOTANY 2015; 102:1966-1977. [PMID: 26656131 DOI: 10.3732/ajb.1500223] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Accepted: 10/12/2015] [Indexed: 06/05/2023]
Abstract
PREMISE OF THE STUDY The antimicrobial properties and toxicity of Euphorbia plant latex should make it a hostile environment to microbes. However, when specimens from Euphorbia spp. were propagated in tissue culture, microbial growth was observed routinely, raising the question whether the latex of this diverse plant genus can be a niche for polymicrobial communities. METHODS Latex from a phylogenetically diverse set of Euphorbia species was collected and genomic microbial DNA extracted. Deep sequencing of bar-coded amplicons from taxonomically informative gene fragments was used to measure bacterial and fungal species richness, evenness, and composition. KEY RESULTS Euphorbia latex was found to contain unexpectedly complex bacterial (mean: 44.0 species per sample; 9 plants analyzed) and fungal (mean: 20.9 species per sample; 22 plants analyzed) communities using culture-independent methods. Many of the identified taxa are known plant endophytes, but have not been previously found in latex. CONCLUSIONS Our results suggest that Euphorbia plant latex, a putatively hostile antimicrobial environment, unexpectedly supports diverse bacterial and fungal communities. The ecological roles of these microorganisms and potential interactions with their host plants are unknown and warrant further research.
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Affiliation(s)
- Manjula Gunawardana
- Department of Chemistry, Oak Crest Institute of Science, 128-132 W. Chestnut Ave., Monrovia, California 91016 USA
| | - Embriette R Hyde
- BioFrontiers Institute, the University of Colorado at Boulder, 3415 Colorado Avenue, Boulder, Colorado 80303 USA; present address: Department of Pediatrics, the University of California at San Diego, 9600 Gilman Drive, La Jolla, California 92093 USA
| | - Sean Lahmeyer
- The Huntington Library, Art Collections, and Botanical Gardens, 1151 Oxford Road, San Marino, California 91108 USA
| | - Brian L Dorsey
- The Huntington Library, Art Collections, and Botanical Gardens, 1151 Oxford Road, San Marino, California 91108 USA
| | - Taylor P La Val
- Department of Chemistry, Oak Crest Institute of Science, 128-132 W. Chestnut Ave., Monrovia, California 91016 USA
| | - Madeline Mullen
- Department of Chemistry, Oak Crest Institute of Science, 128-132 W. Chestnut Ave., Monrovia, California 91016 USA
| | - Jennifer Yoo
- Department of Chemistry, Oak Crest Institute of Science, 128-132 W. Chestnut Ave., Monrovia, California 91016 USA
| | - Rob Knight
- BioFrontiers Institute, the University of Colorado at Boulder, 3415 Colorado Avenue, Boulder, Colorado 80303 USA; present address: Department of Pediatrics, the University of California at San Diego, 9600 Gilman Drive, La Jolla, California 92093 USA Departments of Chemistry and Biochemistry and Computer Science, the University of Colorado at Boulder, 3415 Colorado Avenue, Boulder, Colorado 80303 USA; present address: Departments of Pediatrics and Computer Science and Engineering, the University of California at San Diego, 9600 Gilman Drive, La Jolla, California 92093 USA
| | - Marc M Baum
- Department of Chemistry, Oak Crest Institute of Science, 128-132 W. Chestnut Ave., Monrovia, California 91016 USA
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113
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Sytwala S, Günther F, Melzig MF. Lysozyme- and chitinase activity in latex bearing plants of genus Euphorbia--A contribution to plant defense mechanism. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2015; 95:35-40. [PMID: 26184089 DOI: 10.1016/j.plaphy.2015.07.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Revised: 06/30/2015] [Accepted: 07/01/2015] [Indexed: 05/04/2023]
Abstract
Occurrence of latices in plants is widespread, there are 40 families of plants characterized to establish lactiferous structures. Latices exhibit a constitutive part of plant defense due to the stickiness. The appearance of proteins incorporated in latices is well characterized, and hydrolytic active proteins are considerable. A lot of plants constitute so-called pathogenesis-related (PR) proteins, to overcome stressful conditions. In our investigation we are focused on latex bearing plants of Euphorbiaceae Juss., and investigated the appearance of chitinase- and lysozyme activity in particular. The present outcomes represent a comprehensive study, relating to the occurrence of lysozyme and chitinase activity of genus Euphorbia at the first time. 110 different species of genus Euphorbia L. were tested, and the appearance of chitinase and lysozyme were determined in different quantities. The appearance itself, and the physicochemical properties of latices indicate an efficient interaction for plant defense against pathogen attack.
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Affiliation(s)
- Sonja Sytwala
- Institute of Pharmacy, Freie Universitaet, Berlin, Germany
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114
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Souza CD, Pereira RAS, Marinho CR, Kjellberg F, Teixeira SP. Diversity of fig glands is associated with nursery mutualism in fig trees. AMERICAN JOURNAL OF BOTANY 2015; 102:1564-77. [PMID: 26419809 DOI: 10.3732/ajb.1500279] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Accepted: 08/21/2015] [Indexed: 05/04/2023]
Abstract
PREMISE OF THE STUDY Fig trees (Moraceae) have remarkable enclosed inflorescences called figs or syconia. The flowers are pollinated by host-specific fig wasps that enter the fig to lay their eggs. This nursery pollination system is one of the most studied of tropical mutualism interactions, but the source of the volatiles that attract fig wasps to their specific host figs has not been confirmed. The fragrance is the basis of host selection and, therefore, of reproductive isolation among sympatric Ficus species. This study locates and characterizes the glands likely to be responsible for pollinator attraction and also protection from herbivory in the figs of nine Ficus species representing all the major lineages within the genus. METHODS Figs with receptive pistillate flowers were examined using light and scanning electron microscopy. Tests for histolocalization of substances were employed to detect glandular activity throughout the figs. KEY RESULTS A great diversity of glands is found throughout the fig, and for the first time, the sites producing fragrances are identified. Scent glands are present on the ostiolar bracts and the outer layers of the fig receptacle. Laticifers and phenolic-producing idioblasts, epidermis, and trichomes associated with fig protection occur on the ostiolar bracts, the fig receptacle, and floral tissues. CONCLUSIONS The volatiles produced by glands on the ostiolar bracts are candidate sources for the long-distance attraction of pollinator fig wasps. Scent glands on the outer layers of the receptacle may also play a role in chemical perception of the figs or may be related to their protection. The high cost to the plants if the figs are eaten and the temperature conditions required for nursery pollination are likely the factors that led to the selection of phenolic glands and laticifers during the group's evolution.
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Affiliation(s)
- Camila D Souza
- PPG em Biologia Comparada, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Av. Bandeirantes, 3900 - 14040-901, Ribeirão Preto/ SP, Brazil Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Av. do Café, s/n - 14040-903, Ribeirão Preto/ SP, Brazil
| | - Rodrigo A S Pereira
- Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Av. Bandeirantes 3900 - 14040-903, Ribeirão Preto/ SP, Brazil
| | - Cristina R Marinho
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Av. do Café, s/n - 14040-903, Ribeirão Preto/ SP, Brazil
| | - Finn Kjellberg
- CEFE UMR 5175, CNRS-Université de Montpellier-Université Paul-Valéry Montpellier-EPHE, 1919 route de Mende, F-34293 Montpellier Cédex 5, France
| | - Simone P Teixeira
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Av. do Café, s/n - 14040-903, Ribeirão Preto/ SP, Brazil
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LoPresti EF. Chemicals on plant surfaces as a heretofore unrecognized, but ecologically informative, class for investigations into plant defence. Biol Rev Camb Philos Soc 2015; 91:1102-1117. [PMID: 26280356 DOI: 10.1111/brv.12212] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Revised: 06/21/2015] [Accepted: 07/09/2015] [Indexed: 11/28/2022]
Abstract
Plants produce and utilize a great diversity of chemicals for a variety of physiological and ecological purposes. Many of these chemicals defend plants against herbivores, pathogens and competitors. The location of these chemicals varies within the plant, some are located entirely within plant tissues, others exist in the air- (or water-) space around plants, and still others are secreted onto plant surfaces as exudates. I argue herein that the location of a given defensive chemical has profound implications for its ecological function; specifically, I focus on the characteristics of chemical defences secreted onto plant surfaces. Drawing from a broad literature encompassing ecology, evolution, taxonomy and physiology, I found that these external chemical defences (ECDs) are common and widespread in plants and algae; hundreds of examples have been detailed, yet they are not delineated as a separate class from internal chemical defences (ICDs). I propose a novel typology for ECDs and, using existing literature, explore the ecological consequences of the hypothesized unique characteristics of ECDs. The axis of total or proportional investment in ECDs versus ICDs should be considered as one axis of investment by a plant, in the same way as quantitative versus qualitative chemical defences or induced versus constitutive defences is considered. The ease of manipulating ECDs in many plant systems presents a powerful tool to help test plant defence theory (e.g. optimal defence). The framework outlined here integrates various disciplines of botany and ecology and suggests a need for further examinations of exudates in a variety of contexts, as well as recognition of the effects of within-plant localization of defences.
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Affiliation(s)
- Eric F LoPresti
- Department of Entomology, Graduate Group in Ecology, Center for Population Biology, UC-Davis, Davis, CA 95616, U.S.A..
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116
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Agrawal AA, Weber MG. On the study of plant defence and herbivory using comparative approaches: how important are secondary plant compounds. Ecol Lett 2015; 18:985-91. [DOI: 10.1111/ele.12482] [Citation(s) in RCA: 117] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Revised: 06/01/2015] [Accepted: 07/06/2015] [Indexed: 11/28/2022]
Affiliation(s)
- Anurag A. Agrawal
- Department of Ecology and Evolutionary Biology Cornell University, Corson Hall Ithaca NY 14853 USA
| | - Marjorie G. Weber
- Center for Population Biology University of California Davis CA 95616 USA
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Abstract
Self-healing is a natural process common to all living organisms which provides increased longevity and the ability to adapt to changes in the environment. Inspired by this fitness-enhancing functionality, which was tuned by billions of years of evolution, scientists and engineers have been incorporating self-healing capabilities into synthetic materials. By mimicking mechanically triggered chemistry as well as the storage and delivery of liquid reagents, new materials have been developed with extended longevity that are capable of restoring mechanical integrity and additional functions after being damaged. This Review describes the fundamental steps in this new field of science, which combines chemistry, physics, materials science, and mechanical engineering.
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Affiliation(s)
- Charles E Diesendruck
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology, Technion City, Haifa 32000 (Israel)
| | - Nancy R Sottos
- Department of Materials Science and Engineering and Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405 N. Matthews Ave. Urbana, IL 61801 (USA)
| | - Jeffrey S Moore
- Department of Chemistry and Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405 N. Matthews Ave. Urbana, IL 61801 (USA)
| | - Scott R White
- Department of Aerospace Engineering and Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405 N. Matthews Ave. Urbana, IL 61801 (USA).
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Villanueva J, Quirós LM, Castañón S. Purification and partial characterization of a ribosome-inactivating protein from the latex of Euphorbia trigona Miller with cytotoxic activity toward human cancer cell lines. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2015; 22:689-695. [PMID: 26141754 DOI: 10.1016/j.phymed.2015.04.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2015] [Revised: 03/10/2015] [Accepted: 04/06/2015] [Indexed: 06/04/2023]
Abstract
BACKGROUND The objective of this study is to investigate the cytotoxic activity of three isolectins purified from the latex of Euphorbia trigona Miller. HYPOTHESIS Among lectins are the ribosome-inactivating proteins (RIPs), which are potent inhibitors of protein synthesis in cells and in cell-free systems. RESULTS Three isolectins, ETR1, ETR2 and ETR3, were purified by anion exchange chromatography. Both ETR1 and ETR3 yielded a single band on SDS-PAGE under reducing conditions, corresponding to a molecular weight of 32 g mol(-1), while ETR2 yielded two bands corresponding to 31 and 33 g mol(-1). When non-reducing conditions were used molecular weight decreased, indicating the presence of intrachain disulfide bonds. Size-exclusion chromatography revealed proteins of apparent molecular weight of 59-63 g mol(-1), suggesting a dimeric nature, with subunits not being held together by disulfide linkage. ETR1, ETR2 and ETR3 hemagglutinated human, sheep and rat erythrocytes and this hemagglutination was specifically inhibited by galactose and its derivatives. The lectins studied were thermostable up to 60 °C and their observed activity was maintained across pH range 5-12. These lectins, from the latex of Euphorbia trigona, are potent inhibitors of eukaryotic protein synthesis in a cell-free system. Flow cytometry analysis revealed the antiproliferative activity of them toward A549, HeLa, H116, HL-60 cell lines. CONCLUSION Euphorbia trigona isolectins are RIPs with cytotoxic activity toward human cancer cell lines.
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Affiliation(s)
- Judith Villanueva
- Neiker-Tecnalia, Biotechnology Department, Arkaute Agrifood Campus, PO Box 46, 01080 Vitoria-Gasteiz, Álava, Spain
| | - Luis Manuel Quirós
- University Institute of Oncology of Asturias and Department of Functional Biology, University of Oviedo, Julian Claveria s/n, Oviedo 33006, Spain
| | - Sonia Castañón
- Neiker-Tecnalia, Biotechnology Department, Arkaute Agrifood Campus, PO Box 46, 01080 Vitoria-Gasteiz, Álava, Spain .
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120
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Huber M, Triebwasser-Freese D, Reichelt M, Heiling S, Paetz C, Chandran JN, Bartram S, Schneider B, Gershenzon J, Erb M. Identification, quantification, spatiotemporal distribution and genetic variation of major latex secondary metabolites in the common dandelion (Taraxacum officinale agg.). PHYTOCHEMISTRY 2015; 115:89-98. [PMID: 25682510 DOI: 10.1016/j.phytochem.2015.01.003] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2014] [Revised: 12/18/2014] [Accepted: 01/15/2015] [Indexed: 05/21/2023]
Abstract
The secondary metabolites in the roots, leaves and flowers of the common dandelion (Taraxacum officinale agg.) have been studied in detail. However, little is known about the specific constituents of the plant's highly specialized laticifer cells. Using a combination of liquid and gas chromatography, mass spectrometry and nuclear magnetic resonance spectrometry, we identified and quantified the major secondary metabolites in the latex of different organs across different growth stages in three genotypes, and tested the activity of the metabolites against the generalist root herbivore Diabrotica balteata. We found that common dandelion latex is dominated by three classes of secondary metabolites: phenolic inositol esters (PIEs), triterpene acetates (TritAc) and the sesquiterpene lactone taraxinic acid β-D-glucopyranosyl ester (TA-G). Purification and absolute quantification revealed concentrations in the upper mgg(-1) range for all compound classes with up to 6% PIEs, 5% TritAc and 7% TA-G per gram latex fresh weight. Contrary to typical secondary metabolite patterns, concentrations of all three classes increased with plant age. The highest concentrations were measured in the main root. PIE profiles differed both quantitatively and qualitatively between plant genotypes, whereas TritAc and TA-G differed only quantitatively. Metabolite concentrations were positively correlated within and between the different compound classes, indicating tight biosynthetic co-regulation. Latex metabolite extracts strongly repelled D. balteata larvae, suggesting that the latex constituents are biologically active.
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Affiliation(s)
- Meret Huber
- Department of Biochemistry, Max-Planck Institute for Chemical Ecology, D-07745 Jena, Germany
| | | | - Michael Reichelt
- Department of Biochemistry, Max-Planck Institute for Chemical Ecology, D-07745 Jena, Germany
| | - Sven Heiling
- Department of Molecular Ecology, Max-Planck Institute for Chemical Ecology, D-07745 Jena, Germany
| | - Christian Paetz
- Research Group Biosynthesis/NMR, Max-Planck Institute for Chemical Ecology, D-07745 Jena, Germany
| | - Jima N Chandran
- Research Group Biosynthesis/NMR, Max-Planck Institute for Chemical Ecology, D-07745 Jena, Germany
| | - Stefan Bartram
- Department of Bioorganic Chemistry, Max-Planck Institute for Chemical Ecology, D-07745 Jena, Germany
| | - Bernd Schneider
- Research Group Biosynthesis/NMR, Max-Planck Institute for Chemical Ecology, D-07745 Jena, Germany
| | - Jonathan Gershenzon
- Department of Biochemistry, Max-Planck Institute for Chemical Ecology, D-07745 Jena, Germany
| | - Matthias Erb
- Institute of Plant Sciences, University of Bern, Altenbergrain 21, CH-3013 Bern, Switzerland.
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121
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Secondary Defense Chemicals in Milkweed Reduce Parasite Infection in Monarch Butterflies, Danaus plexippus. J Chem Ecol 2015; 41:520-3. [DOI: 10.1007/s10886-015-0586-6] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Revised: 04/07/2015] [Accepted: 04/30/2015] [Indexed: 10/23/2022]
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122
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Agrawal AA, Hastings AP, Bradburd GS, Woods EC, Züst T, Harvey JA, Bukovinszky T. Evolution of plant growth and defense in a continental introduction. Am Nat 2015; 186:E1-E15. [PMID: 26098351 DOI: 10.1086/681622] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Substantial research has addressed adaptation of nonnative biota to novel environments, yet surprisingly little work has integrated population genetic structure and the mechanisms underlying phenotypic differentiation in ecologically important traits. We report on studies of the common milkweed Asclepias syriaca, which was introduced from North America to Europe over the past 400 years and which lacks most of its specialized herbivores in the introduced range. Using 10 populations from each continent grown in a common environment, we identified several growth and defense traits that have diverged, despite low neutral genetic differentiation between continents. We next developed a Bayesian modeling approach to account for relationships between molecular and phenotypic differences, confirming that continental trait differentiation was greater than expected from neutral genetic differentiation. We found evidence that growth-related traits adaptively diverged within and between continents. Inducible defenses triggered by monarch butterfly herbivory were substantially reduced in European populations, and this reduction in inducibility was concordant with altered phytohormonal dynamics, reduced plant growth, and a trade-off with constitutive investment. Freedom from the community of native and specialized herbivores may have favored constitutive over induced defense. Our replicated analysis of plant growth and defense, including phenotypically plastic traits, suggests adaptive evolution following a continental introduction.
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Affiliation(s)
- Anurag A Agrawal
- Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, New York 14853
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123
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Züst T, Rasmann S, Agrawal AA. Growth-defense tradeoffs for two major anti-herbivore traits of the common milkweedAsclepias syriaca. OIKOS 2015. [DOI: 10.1111/oik.02075] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Tobias Züst
- Dept of Ecology and Evolutionary Biology; Cornell Univ.; Ithaca NY 14853 USA
| | - Sergio Rasmann
- Dept of Ecology and Evolutionary Biology; Univ. of California; Irvine CA 92697 USA
| | - Anurag A. Agrawal
- Dept of Ecology and Evolutionary Biology; Cornell Univ.; Ithaca NY 14853 USA
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124
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Bell JL, Burke IC, Neff MM. Genetic and biochemical evaluation of natural rubber from Eastern Washington prickly lettuce (Lactuca serriola L.). JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:593-602. [PMID: 25513853 DOI: 10.1021/jf503934v] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Alternative sources of natural rubber are of importance due to economic, biological, and political threats that could diminish supplies of this resource. Prickly lettuce (Lactuca serriola L.) synthesizes long-chain natural rubber and was studied to determine underlying genetic and phenotypic characteristics of rubber biosynthesis. Genotypic and phenotypic analysis of an F2 segregating population using EST-SSR markers led to the discovery of genetic regions linked to natural rubber production. Interval mapping (IM) and multiple QTL mapping (MQM) identified several QTL in the mapping population that had significance based on LOD score thresholds. The discovered QTL and the corresponding local markers are genetic resources for understanding rubber biosynthesis in prickly lettuce and could be used in marker-assisted selection (MAS) breeding. Prickly lettuce is an excellent candidate for elucidating the rubber synthesis mechanism and has potential as a crop plant for rubber production.
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Affiliation(s)
- Jared L Bell
- Discovery Research, Dow Agrosciences, Indianapolis, Indiana, United States
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125
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Metabolic engineering of higher plants and algae for isoprenoid production. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2015; 148:161-99. [PMID: 25636485 DOI: 10.1007/10_2014_290] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Isoprenoids are a class of compounds derived from the five carbon precursors, dimethylallyl diphosphate, and isopentenyl diphosphate. These molecules present incredible natural chemical diversity, which can be valuable for humans in many aspects such as cosmetics, agriculture, and medicine. However, many terpenoids are only produced in small quantities by their natural hosts and can be difficult to generate synthetically. Therefore, much interest and effort has been directed toward capturing the genetic blueprint for their biochemistry and engineering it into alternative hosts such as plants and algae. These autotrophic organisms are attractive when compared to traditional microbial platforms because of their ability to utilize atmospheric CO2 as a carbon substrate instead of supplied carbon sources like glucose. This chapter will summarize important techniques and strategies for engineering the accumulation of isoprenoid metabolites into higher plants and algae by choosing the correct host, avoiding endogenous regulatory mechanisms, and optimizing potential flux into the target compound. Future endeavors will build on these efforts by fine-tuning product accumulation levels via the vast amount of available "-omic" data and devising metabolic engineering schemes that integrate this into a whole-organism approach. With the development of high-throughput transformation protocols and synthetic biology molecular tools, we have only begun to harness the power and utility of plant and algae metabolic engineering.
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126
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Ramos MV, Pereira DA, Souza DP, Silva MLS, Alencar LMR, Sousa JS, Queiroz JFN, Freitas CDT. Peptidases and peptidase inhibitors in gut of caterpillars and in the latex of their host plants. PLANTA 2015; 241:167-178. [PMID: 25246317 DOI: 10.1007/s00425-014-2174-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2014] [Accepted: 09/12/2014] [Indexed: 06/03/2023]
Abstract
Studies investigating the resistance-susceptibility of crop insects to proteins found in latex fluids have been reported. However, latex-bearing plants also host insects. In this study, the gut proteolytic system of Pseudosphinx tetrio, which feeds on Plumeria rubra leaves, was characterized and further challenged against the latex proteolytic system of its own host plant and those of other latex-bearing plants. The gut proteolytic system of Danaus plexippus (monarch) and the latex proteolytic system of its host plant (Calotropis procera) were also studied. The latex proteins underwent extensive hydrolysis when mixed with the corresponding gut homogenates of the hosted insects. The gut homogenates partially digested the latex proteins of foreign plants. The fifth instar of D. plexippus that were fed diets containing foreign latex developed as well as those individuals who were fed diets containing latex proteins from their host plant. In vitro assays detected serine and cysteine peptidase inhibitors in both the gut homogenates and the latex fluids. Curiously, the peptidase inhibitors of caterpillars did not inhibit the latex peptidases of their host plants. However, the peptidase inhibitors of laticifer origin inhibited the proteolysis of gut homogenates. In vivo analyses of the peritrophic membrane proteins of D. plexippus demonstrate resistance against latex peptidases. Only discrete changes were observed when the peritrophic membrane was directly treated with purified latex peptidases in vitro. This study concludes that peptidase inhibitors are involved in the defensive systems of both caterpillars and their host plants. Although latex peptidase inhibitors inhibit gut peptidases (in vitro), the ability of gut peptidases to digest latex proteins (in vivo) regardless of their origin seems to be important in governing the resistance-susceptibility of caterpillars.
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Affiliation(s)
- Márcio V Ramos
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Ceará, Campus do Pici, Cx. Postal 6033, Fortaleza, CE, CEP 60451-970, Brazil,
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Barbosa EF, Monge-Fuentes V, Oliveira NB, Tavares R, Xavier MAE, Bemquerer MP, Silva LP. Protein characterisation of Brosimum gaudichaudii Trécul latex and study of nanostructured latex film formation. IET Nanobiotechnol 2014; 8:222-9. [PMID: 25429501 DOI: 10.1049/iet-nbt.2013.0042] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Brosimum gaudichaudii Tréc. (Moraceae) is a common Brazilian Cerrado plant known by its pharmaceutical industry relevance. The authors investigated the latex protein components and potential biotechnological applications. Some protein fragments had their sequences elucidated, presenting similarities to jacalin and Kunitz-type trypsin inhibitors. Amino acid residue modifications were found, such as glutamine N-terminal residue cyclisation into pyroglutamic acid residue, and mass differences corresponding to hexoses and N-acetylhexosamine presence. The latex was used to produce a nanoscale structured film, which presented an increased attraction and reduced adhesion behaviours. The film presented high homogeneity, as observed by low nanoroughness values, probably because of its intrinsic components, such as the jacalin-like protein that has known agglutination properties. The immobilised Kunitz-type trypsin inhibitor presence in the latex film allow us to point out to applications related to this inhibition, as in active food packaging, since these peptidase inhibitors are able to inhibit pests and microorganism proliferation.
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Affiliation(s)
- Eduardo F Barbosa
- Postgraduate Program in Animal Biology, Institute of Biological Sciences, University of Brasília, UnB, Brasília, Brazil
| | - Victoria Monge-Fuentes
- Postgraduate Program in Animal Biology, Institute of Biological Sciences, University of Brasília, UnB, Brasília, Brazil
| | - Natiela B Oliveira
- Postgraduate Program in Animal Biology, Institute of Biological Sciences, University of Brasília, UnB, Brasília, Brazil
| | - Rebecca Tavares
- Postgraduate Program in Animal Biology, Institute of Biological Sciences, University of Brasília, UnB, Brasília, Brazil
| | - Mary-Ann E Xavier
- Postgraduate Program in Animal Biology, Institute of Biological Sciences, University of Brasília, UnB, Brasília, Brazil
| | - Marcelo Porto Bemquerer
- Laboratory of Mass Spectrometry, Embrapa Genetic Resources and Biotechnology, Brasília, Brazil
| | - Luciano P Silva
- Postgraduate Program in Animal Biology, Institute of Biological Sciences, University of Brasília, UnB, Brasília, Brazil.
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129
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Affiliation(s)
- Juli G. Pausas
- CIDE‐CSIC Ctra. Nàquera Km. 4.5 (IVIA) Montcada Valencia 46113 Spain
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130
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Comparative study on plant latex particles and latex coagulation in Ficus benjamina, Campanula glomerata and three Euphorbia species. PLoS One 2014; 9:e113336. [PMID: 25409036 PMCID: PMC4237448 DOI: 10.1371/journal.pone.0113336] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2013] [Accepted: 10/27/2014] [Indexed: 12/04/2022] Open
Abstract
Among latex-producing plants, mainly the latex of Hevea brasiliensis has been studied in detail so far, while comprehensive comparative studies of latex coagulation mechanisms among the more than 20,000 latex-bearing plant species are lacking. In order to give new insights into the potential variety of coagulation mechanisms, the untreated natural latices of five latex-bearing plants from the families Euphorbiaceae, Moraceae and Campanulaceae were visualised using Cryo-SEM and their particle size compared using the laser diffraction method. Additionally, the laticifers of these plants species were examined in planta via Cryo-SEM. Similar latex particle sizes and shape were found in Ficus benjamina and Hevea brasiliensis. Hence, and due to other similarities, we hypothesize comparable, mainly chemical, coagulation mechanisms in these two species, whereas a physical coagulation mechanism is proposed for the latex of Euphorbia spp. The latter mechanism is based on the huge amount of densely packed particles that after evaporation of water build a large surface area, which accelerates the coagulation procedure.
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131
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El-Sayed ZA, El-Sayed SS, Zaki RM, Salama MA. Latex hypersensitivity among allergic Egyptian children: relation to parental/self reports. Pulm Med 2014; 2014:629187. [PMID: 25505988 PMCID: PMC4251815 DOI: 10.1155/2014/629187] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2014] [Accepted: 10/23/2014] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Latex allergy is one of the major health concerns and allergic reactions to latex may be serious and fatal. PURPOSE In this study, we sought to determine the frequency of latex hypersensitivity in a group of allergic Egyptian infants and children and its relation to the history provided by the patients or caregivers. METHODS We consecutively enrolled 400 patients with physician diagnosed allergic diseases. The study measurements included clinical evaluation for the site and duration of allergy, history suggestive of latex allergy, family history of allergy, and skin prick testing (SPT) using a commercial latex extract. RESULTS The study revealed that 16/400 (4%) patients had positive SPT; 11 of them only had positive history of sensitivity to latex. Positive latex SPT was reported in 3.4% (11/326) of patients with bronchial asthma, 5.9% (7/118) of patients with skin allergy, and 4.5% (2/44) of patients with allergic rhinitis. SPT was positive in 7.4% (4/54) of patients with concomitant respiratory and skin allergy. Latex SPT was more specific than sensitive (97.69% and 77.77%, resp.) with a negative predictive value of 99.47%. CONCLUSION Although underrecognized, latex is an important allergen in the pediatric age group with a sensitization frequency of 4% among allergic children. It was observed to be especially associated with multiple allergic diseases coexisting in the same patient. Pediatric allergologists should educate their patients on latex allergy and encourage the use of latex-free products.
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Affiliation(s)
- Zeinab A. El-Sayed
- Pediatric Allergy and Immunology Unit, Children's Hospital, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Shereen S. El-Sayed
- Pediatric Allergy and Immunology Unit, Children's Hospital, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Rehab M. Zaki
- Pediatric Allergy and Immunology Unit, Children's Hospital, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Mervat A. Salama
- Pediatric Allergy and Immunology Unit, Children's Hospital, Faculty of Medicine, Ain Shams University, Cairo, Egypt
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132
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Agrawal AA, Patrick ET, Hastings AP. Tests of the coupled expression of latex and cardenolide plant defense in common milkweed (Asclepias syriaca). Ecosphere 2014. [DOI: 10.1890/es14-00161.1] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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133
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Borase HP, Patil CD, Salunkhe RB, Suryawanshi RK, Salunke BK, Patil SV. Phytolatex synthesized gold nanoparticles as novel agent to enhance sun protection factor of commercial sunscreens. Int J Cosmet Sci 2014; 36:571-8. [PMID: 25124731 DOI: 10.1111/ics.12158] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2014] [Accepted: 07/26/2014] [Indexed: 01/16/2023]
Abstract
OBJECTIVE To study the potential of phytolatex (latex of Jatropha gossypifolia) fabricated gold nanoparticles as promising candidate in sunscreen formulations for enhancement in sun protection factor. METHODS In this study, plant latex was used as reducing and capping agent to synthesize gold nanoparticles. Latex fabricated gold nanoparticles were characterized by different analytical techniques such as UV-Vis spectroscopy, Fourier transforms infrared spectroscopy, dynamic light scattering, zeta potential, transmission electron microscopy and X-ray diffraction. Potential of sunscreen preparations containing gold nanoparticles to protect skin from UV radiation was investigated by in vitro sun protection factor analysis. Transmission electron microscopy and UV-Vis spectroscopy techniques were used to get insight into mechanism by which AuNPs enhance sun protection factor of sunscreen. RESULTS Monodisperse gold nanoparticles were synthesized using plant latex without need of hazardous chemical reducing and capping agents. Gold nanoparticles showed surface plasmon resonance peak at 550 nm in UV-Vis spectroscopic study. Gold nanoparticles were spherical and triangular in shape with size range of 30-50 nm. The zeta potential of gold nanoparticles was found to be -9.39 ± 0.19 mV. XRD analysis confirmed face-centred cubic (fcc) structure of gold nanoparticles. Incorporation of latex synthesized gold nanoparticles (2 and 4 [% w/w]) into commercial sunscreens increased the sun protection factor from 2.43 ± 0.74 to 24.11 ± 0.46% than sunscreen devoid of gold nanoparticles. From UV-Vis absorption spectroscopy and TEM analysis, it was observed that gold nanoparticles enhance the sun protection factor of commercial sunscreens due to reflection and scattering of UV radiation. CONCLUSION Phytolatex synthesized gold nanoparticle is novel agent to enhance sun protection factor of commercial sunscreens. Gold nanoparticles aggregation in commercial sunscreen was the main factor behind SPF enhancement. This study showed that gold nanoparticles are potent alternative to traditionally used hazardous titanium dioxide and zinc oxide nanoparticles in sunscreen.
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Affiliation(s)
- H P Borase
- School of Life Sciences, North Maharashtra University, PO Box- 80, Jalgaon, 425001, Maharashtra, India
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134
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Reciprocal interactions between native and introduced populations of common milkweed, Asclepias syriaca, and the specialist aphid, Aphis nerii. Basic Appl Ecol 2014. [DOI: 10.1016/j.baae.2014.07.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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135
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Tan D, Sun X, Zhang J. Age-dependent and jasmonic acid-induced laticifer-cell differentiation in anther callus cultures of rubber tree. PLANTA 2014; 240:337-344. [PMID: 24841475 DOI: 10.1007/s00425-014-2086-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2014] [Accepted: 04/23/2014] [Indexed: 06/03/2023]
Abstract
Callus cultures of rubber tree may serve as an efficient model to screen and study environmental factors and phytohormones that stimulate laticifer cell differentiation and improve latex yield. The number of laticifer cells in bark is one of the most important factors determining the biosynthesis and economic value of rubber trees (Hevea brasiliensis). The differentiation of laticifer cells in planta has been characterized, whereas laticifer-cell differentiation in callus cultures in vitro is largely unknown. In this study, we present molecular and physiological evidences for laticifer-cell differentiation in calli derived from rubber tree anthers. RT-PCR analysis showed that three key genes rubber elongation factor (REF), small rubber particle protein (SRPP), and cis-prenyl transferase (CPT) that are essential in latex biosynthesis in rubber tree bark also were transcribed in anther calli. Laticifer cell development in callus cultures was age-dependent; the cells began to appear at 58 days after initiation of culture, and the percentage of laticifer cells increased steadily with increasing callus age. Addition of 0-2 mg/L jasmonic acid (JA) to the media significantly promoted the differentiation of laticifer cells in callus cultures. However, JA concentrations higher than 3 mg/L were not optimum for laticifer cells differentiation; this result was not observed in previous in planta studies. Laticifer cells differentiated on media with pH 5.8-7.0, with an optimum of pH 6.2, whereas a higher pH inhibited differentiation. These results indicate that the anther-derived rubber tree callus may serve as a new and more efficient model to study environmental factors that influence laticifer cell differentiation, and may be useful for research on new technologies to improve latex yield, and to screen for commercially useful phytohormones.
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Affiliation(s)
- Deguan Tan
- Institute of Tropical Bioscience and Biotechnology, MOA Key Laboratory of Tropical Crops Biology and Genetic Resources, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, Hainan, China
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136
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Lev-Yadun S. Why is latex usually white and only sometimes yellow, orange or red? Simultaneous visual and chemical plant defense. CHEMOECOLOGY 2014. [DOI: 10.1007/s00049-014-0160-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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137
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Agrawal AA, Hastings AP, Patrick ET, Knight AC. Specificity of herbivore-induced hormonal signaling and defensive traits in five closely related milkweeds (Asclepias spp.). J Chem Ecol 2014; 40:717-29. [PMID: 24863490 DOI: 10.1007/s10886-014-0449-6] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2013] [Revised: 04/23/2014] [Accepted: 05/06/2014] [Indexed: 12/11/2022]
Abstract
Despite the recognition that phytohormonal signaling mediates induced responses to herbivory, we still have little understanding of how such signaling varies among closely related species and may generate herbivore-specific induced responses. We studied closely related milkweeds (Asclepias) to link: 1) plant damage by two specialist chewing herbivores (milkweed leaf beetles Labidomera clivicolis and monarch caterpillars Danaus plexippus); 2) production of the phytohormones jasmonic acid (JA), salicylic acid (SA), and abscisic acid (ABA); 3) induction of defensive cardenolides and latex; and 4) impacts on Danaus caterpillars. We first show that A. syriaca exhibits induced resistance following monarch herbivory (i.e., reduced monarch growth on previously damaged plants), while the defensively dissimilar A. tuberosa does not. We next worked with a broader group of five Asclepias, including these two species, that are highly divergent in defensive traits yet from the same clade. Three of the five species showed herbivore-induced changes in cardenolides, while induced latex was found in four species. Among the phytohormones, JA and ABA showed specific responses (although they generally increased) to insect species and among the plant species. In contrast, SA responses were consistent among plant and herbivore species, showing a decline following herbivore attack. Jasmonic acid showed a positive quantitative relationship only with latex, and this was strongest in plants damaged by D. plexippus. Although phytohormones showed qualitative tradeoffs (i.e., treatments that enhanced JA reduced SA), the few significant individual plant-level correlations among hormones were positive, and these were strongest between JA and ABA in monarch damaged plants. We conclude that: 1) latex exudation is positively associated with endogenous JA levels, even among low-latex species; 2) correlations among milkweed hormones are generally positive, although herbivore damage induces a divergence (tradeoff) between JA and SA; 3) induction of cardenolides and latex are not necessarily physiologically linked; and 4) even very closely related species show highly divergent induction, with some species showing strong defenses, hormonally-mediated induction, and impacts on herbivores, while other milkweed species apparently use alternative strategies to cope with insect attack.
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Affiliation(s)
- Anurag A Agrawal
- Department of Ecology and Evolutionary Biology, and Department of Entomology, Cornell University, Ithaca, NY, USA,
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138
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Barolo MI, Ruiz Mostacero N, López SN. Ficus carica L. (Moraceae): an ancient source of food and health. Food Chem 2014; 164:119-27. [PMID: 24996314 DOI: 10.1016/j.foodchem.2014.04.112] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2014] [Revised: 04/27/2014] [Accepted: 04/29/2014] [Indexed: 11/19/2022]
Abstract
Since early in the man history, common fig was appreciated as food and for its medicinal properties. This review explores some aspects about the importance of Ficus carica L., an amazing and ancient source of medicines and food. Topics regarding chemistry, biological activity, ethno-pharmacological uses, and its nutritional value are discussed, as well as the potential of the species as a source of new and different chemical scaffolds. Very important in the past, appreciated in our time and extremely promising in the future, F. carica represents an interesting example of healthy foods and bioproducts.
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Affiliation(s)
- Melisa I Barolo
- Farmacognosia, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, S2002LRK Rosario, Argentina
| | - Nathalie Ruiz Mostacero
- Farmacognosia, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, S2002LRK Rosario, Argentina
| | - Silvia N López
- Farmacognosia, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, S2002LRK Rosario, Argentina.
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139
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Mercury sensing and toxicity studies of novel latex fabricated silver nanoparticles. Bioprocess Biosyst Eng 2014; 37:2223-33. [DOI: 10.1007/s00449-014-1200-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2014] [Accepted: 04/15/2014] [Indexed: 01/02/2023]
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140
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Hoan RP, Ormond RA, Barton KE. Prickly poppies can get pricklier: ontogenetic patterns in the induction of physical defense traits. PLoS One 2014; 9:e96796. [PMID: 24802133 PMCID: PMC4011880 DOI: 10.1371/journal.pone.0096796] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2013] [Accepted: 04/11/2014] [Indexed: 11/18/2022] Open
Abstract
Plant ontogeny is a common source of variation in defense and herbivory. Yet, few studies have investigated how the induction of physical defense traits changes across plant ontogeny. Physical defense traits are costly to produce, and thus, it was predicted that induction as a cost-saving strategy would be particularly favorable for seedlings, leading to ontogenetic declines in the inducibility of these traits. We tested for induction of three different physical defense traits (prickles, latex and leaf toughness) in response to mechanical defoliation and jasmonic acid application using prickly poppies (Argemone glauca and A. mexicana, Papaveraceae) as a model system. Genetic variation in the induction of physical defenses was tested using maternal sib-ships sampled from multiple populations. Both species induced higher densities of laminar prickles, although the magnitude of induction was much higher in the endemic Hawaiian prickly poppy, A. glauca, than in the cosmopolitan A. mexicana. The magnitude of prickle induction was also higher in young compared to older juvenile plant stages in A. glauca, demonstrating a strong role of ontogeny. Neither latex exudation nor leaf toughness was induced in either species. Although significant genetic variation was detected within and among populations for constitutive expression of physical defense traits in Argemone, there was no evidence for genetic variation in the induction of these traits. This study provides the first evidence for the induction of physical defenses in prickly poppies, emphasizing how an ontogenetically explicit framework can reveal new insights into plant defense. Moreover, this study illustrates how sister species comparisons between island vs. continental plants can provide new insights into plant functional and evolutionary ecology, highlighting a fruitful area for future research on more species pairs.
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Affiliation(s)
- Ryan P. Hoan
- Department of Botany, University of Hawai’i at Mānoa, Honolulu, Hawai’i, United States of America
| | - Rhys A. Ormond
- Biology Department, Willamette University, Salem, Oregon, United States of America
| | - Kasey E. Barton
- Department of Botany, University of Hawai’i at Mānoa, Honolulu, Hawai’i, United States of America
- * E-mail:
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141
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Post J, Eisenreich W, Huber C, Twyman RM, Prüfer D, Schulze Gronover C. Establishment of an ex vivo laticifer cell suspension culture from Taraxacum brevicorniculatum as a production system for cis-isoprene. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.molcatb.2013.07.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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142
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Knoblauch M, Froelich DR, Pickard WF, Peters WS. SEORious business: structural proteins in sieve tubes and their involvement in sieve element occlusion. JOURNAL OF EXPERIMENTAL BOTANY 2014; 65:1879-93. [PMID: 24591057 DOI: 10.1093/jxb/eru071] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The phloem provides a network of sieve tubes for long-distance translocation of photosynthates. For over a century, structural proteins in sieve tubes have presented a conundrum since they presumably increase the hydraulic resistance of the tubes while no potential function other than sieve tube or wound sealing in the case of injury has been suggested. Here we summarize and critically evaluate current speculations regarding the roles of these proteins. Our understanding suffers from the suggestive power of images; what looks like a sieve tube plug on micrographs may not actually impede translocation very much. Recent reports of an involvement of SEOR (sieve element occlusion-related) proteins, a class of P-proteins, in the sealing of injured sieve tubes are inconclusive; various lines of evidence suggest that, in neither intact nor injured plants, are SEORs determinative of translocation stoppage. Similarly, the popular notion that P-proteins serve in the defence against phloem sap-feeding insects is unsupported by empirical facts; it is conceivable that in functional sieve tubes, aphids actually could benefit from inducing a plug. The idea that rising cytosolic Ca(2+) generally triggers sieve tube blockage by P-proteins appears widely accepted, despite lacking experimental support. Even in forisomes, P-protein assemblages restricted to one single plant family and the only Ca(2+)-responsive P-proteins known, the available evidence does not unequivocally suggest that plug formation is the cause rather than a consequence of translocation stoppage. We conclude that the physiological roles of structural P-proteins remain elusive, and that in vivo studies of their dynamics in continuous sieve tube networks combined with flow velocity measurements will be required to (hopefully) resolve this scientific roadblock.
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Affiliation(s)
- Michael Knoblauch
- School of Biological Sciences, Washington State University, Pullman, WA 99164, USA
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143
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Lasky JR, Yang J, Zhang G, Cao M, Tang Y, Keitt TH. The role of functional traits and individual variation in the co-occurrence ofFicusspecies. Ecology 2014; 95:978-90. [DOI: 10.1890/13-0437.1] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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144
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Purification and Biochemical Characterization of Lipase from Tunisian Euphorbia peplus Latex. J AM OIL CHEM SOC 2014. [DOI: 10.1007/s11746-014-2444-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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145
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Synergistic defensive function of raphides and protease through the needle effect. PLoS One 2014; 9:e91341. [PMID: 24621613 PMCID: PMC3951349 DOI: 10.1371/journal.pone.0091341] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2013] [Accepted: 02/11/2014] [Indexed: 11/30/2022] Open
Abstract
Raphides, needle-shaped calcium oxalate crystals in tissues of many plants, have been thought to play defensive roles against herbivores without detailed bioassays for their defensive roles and modes of function using purified raphides. In order to examine the defensive roles and modes of function of raphides in a clear experimental system, we performed bioassays giving the larvae of the Eri silkmoth, Samia ricini (Saturniidae), leaves of their host plant, the castor oil plant, Ricinus communis (Euphorbiaceae), painted with the raphides purified from kiwifruits, Actinidia deliciosa (Actinidiaceae), in presence or absence of cysteine protease, which often coincide with raphides in plant tissues. Raphides alone or cysteine protease alone showed only weak defensive activities around experimental concentrations. However, when raphides and cysteine protease coexisted, they synergistically showed very strong growth-reducing activities, and the mortality of caterpillars was very high. In contrast, amorphous calcium oxalate did not show synergism with cysteine protease on defensive activities, indicating that the needle-shape of raphides is essential for the synergism. The present study provides the first clear experimental evidence for the synergism between raphides and other defensive factors. Further, the study suggests that “the needle effect”, which intensify the bioactivities of other bioactive factors by making holes to the barriers (cell membrane, cuticle, epithelium, the nuclear membrane, etc.) and facilitate the bioactive factors to go through them and reach the targets, is important in the defensive activities of raphides, and possibly in the allergy caused by raphides, and in the carcinogenic activities of other needle-shaped components including asbestos and plant derived silica needles.
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146
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Ramos MV, Souza DP, Gomes MTR, Freitas CDT, Carvalho CPS, Júnior PAVR, Salas CE. A Phytopathogenic Cysteine Peptidase from Latex of Wild Rubber Vine Cryptostegia grandiflora. Protein J 2014; 33:199-209. [DOI: 10.1007/s10930-014-9551-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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147
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Prickles, latex, and tolerance in the endemic Hawaiian prickly poppy (Argemone glauca): variation between populations, across ontogeny, and in response to abiotic factors. Oecologia 2013; 174:1273-81. [DOI: 10.1007/s00442-013-2836-z] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2012] [Accepted: 11/07/2013] [Indexed: 10/26/2022]
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148
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Bauer G, Friedrich C, Gillig C, Vollrath F, Speck T, Holland C. Investigating the rheological properties of native plant latex. J R Soc Interface 2013; 11:20130847. [PMID: 24173604 DOI: 10.1098/rsif.2013.0847] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Plant latex, the source of natural rubber, has been of interest to mankind for millennia, with much of the research on its rheological (flow) properties focused towards industrial application. However, little is known regarding the rheology of the native material as produced by the plant, a key factor in determining latex's biological functions. In this study, we outline a method for rheological comparison between native latices that requires a minimum of preparatory steps. Our approach provides quantitative insights into the coagulation mechanisms of Euphorbia and Ficus latex allowing interpretation within a comparative evolutionary framework. Our findings reveal that in laboratory conditions both latices behave like non-Newtonian materials with the coagulation of Euphorbia latex being mediated by a slow evaporative process (more than 60 min), whereas Ficus appears to use additional biochemical components to increase the rate of coagulation (more than 30 min). Based on these results, we propose two different primary defensive roles for latex in these plants: the delivery of anti-herbivory compounds (Euphorbia) and rapid wound healing (Ficus).
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Affiliation(s)
- Georg Bauer
- Plant Biomechanics Group, Botanic Garden, Faculty of Biology, University of Freiburg, , Schänzlestraße 1, Freiburg 79104, Germany
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149
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Lev-Yadun S. Theoretical and functional complexity of white variegation of unripe fleshy fruits. PLANT SIGNALING & BEHAVIOR 2013; 8:doi: 10.4161/psb.25851. [PMID: 23921545 PMCID: PMC4091064 DOI: 10.4161/psb.25851] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2013] [Revised: 07/22/2013] [Accepted: 07/22/2013] [Indexed: 06/02/2023]
Abstract
In many plant species, the bright colors of ripe fruit serve to attract frugivores to enable efficient seed dispersal. Here I show that the fleshy fruit of several dozens of species originating from Asia (southeastern, eastern and central), the Middle East, Africa, America (South, Central and North), Australia, Polynesia and Micronesia, with fruit usually larger than 1 cm, have white or light green spots while they are still unripe. In many of these species, while the spots are conspicuous, the unripe fruit is known to be poisonous, bitter or sour. I propose that this fruit syndrome may signal frugivores that the fruit is still unripe. Similarly to the succulent leaves of window-plants, these spots form windows that enable light to penetrate deeper into the photosynthetic layers in the developing fruit. This seems to be a solution to overcome the limitations of light harvest because of the high volume to surface ratio of developing fleshy fruits. The white or whitish variegation in these unripe fleshy fruits may serve at least five functions: 1) Windows for photosynthesis, 2) camouflage, 3) signaling to frugivores that they are not ripe (possibly sometimes a type of mutualism with frugivores), 4) signaling to frugivores that they are poisonous--aposematism, and 5) mimicking insect eggs to reduce egg laying. All these functions may be partly or fully simultaneous. Because these white spots appear in plants of diverse geographical and taxonomic origin, it is probably an old adaptation, and such a syndrome has appeared and been selected for many times.
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150
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Wang X, Shi M, Wang D, Chen Y, Cai F, Zhang S, Wang L, Tong Z, Tian WM. Comparative proteomics of primary and secondary lutoids reveals that chitinase and glucanase play a crucial combined role in rubber particle aggregation in Hevea brasiliensis. J Proteome Res 2013; 12:5146-59. [PMID: 23991906 DOI: 10.1021/pr400378c] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Lutoids are specific vacuole-based organelles within the latex-producing laticifers in rubber tree Hevea brasiliensis. Primary and secondary lutoids are found in the primary and secondary laticifers, respectively. Although both lutoid types perform similar roles in rubber particle aggregation (RPA) and latex coagulation, they vary greatly at the morphological and proteomic levels. To compare the differential proteins and determine the shared proteins of the two lutoid types, a proteomic analysis of lutoid membranes and inclusions was performed, revealing 169 proteins that were functionally classified into 14 families. Biological function analysis revealed that most of the proteins are involved in pathogen defense, chitin catabolism, and proton transport. Comparison of the gene and protein changed patterns and determination of the specific roles of several main lutoid proteins, such as glucanase, hevamine, and hevein, demonstrated that Chitinase and glucanase appeared to play crucial synergistic roles in RPA. Integrative analysis revealed a protein-based metabolic network mediating pH and ion homeostasis, defense response, and RPA in lutoids. From these findings, we developed a modified regulation model for lutoid-mediated RPA that will deepen our understanding of potential mechanisms involved in lutoid-mediated RPA and consequent latex coagulation.
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Affiliation(s)
- Xuchu Wang
- Ministry of Agriculture Key Laboratory of Biology and Genetic Resources of Rubber Tree, Rubber Research Institute, Chinese Academy of Tropical Agricultural Sciences , Danzhou Hainan 571737, P. R. China
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