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Vuts J, Powers SJ, Venter E, Szentesi Á. A semiochemical view of the ecology of the seed beetle Acanthoscelides obtectus Say (Coleoptera: Chrysomelidae, Bruchinae). THE ANNALS OF APPLIED BIOLOGY 2024; 184:19-36. [PMID: 38516560 PMCID: PMC10953445 DOI: 10.1111/aab.12862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 08/01/2023] [Accepted: 08/14/2023] [Indexed: 03/23/2024]
Abstract
The dried bean beetle, Acanthoscelides obtectus, is an economically important pest of stored legumes worldwide. Tracking the human-aided dispersion of its primary hosts, the Phaseolus vulgaris beans, it is now widespread in most bean-growing areas of the tropics and subtropics. In temperate regions where it can only occasionally overwinter in the field, A. obtectus proliferates in granaries, having multiple generations a year. Despite its negative impact on food production, no sensitive detection or monitoring tools exist, and the reduction of local populations still relies primarily on inorganic insecticides as fumigating agents. However, in the quest to produce more nutritious food more sustainably and healthily, the development of environmentally benign crop protection methods is vital against A. obtectus. For this, knowledge of the biology and chemistry of both the host plant and its herbivore will underpin the development of, among others, chemical ecology-based approaches to form an essential part of the toolkit of integrated bruchid management. We review the semiochemistry of the mate- and host-finding behaviour of A. obtectus and provide new information about the effect of seed chemistry on the sensory and behavioural ecology of host acceptance and larval development.
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Affiliation(s)
- József Vuts
- Protecting Crops and the Environment DepartmentRothamsted ResearchHarpendenUK
| | | | - Eudri Venter
- Rothamsted BioimagingRothamsted ResearchHarpendenUK
- JEOL UKWelwyn Garden CityUK
| | - Árpád Szentesi
- Department of Systematic Zoology and EcologyEötvös Loránd UniversityBudapestHungary
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Smits M, Verhoeckx K, Knulst A, Welsing P, de Jong A, Gaspari M, Ehlers A, Verhoeff P, Houben G, Le TM. Co-sensitization between legumes is frequently seen, but variable and not always clinically relevant. FRONTIERS IN ALLERGY 2023; 4:1115022. [PMID: 37007648 PMCID: PMC10060518 DOI: 10.3389/falgy.2023.1115022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Accepted: 02/02/2023] [Indexed: 03/18/2023] Open
Abstract
BackgroundFood allergy to peanut and soybean, both legumes, is highly prevalent. The consumption of other legumes and legume protein isolates, some of which may be considered novel foods, is increasing. This may lead to an increase in sensitization and allergy and may pose a risk for legume-allergic (e.g. peanut and soybean) patients due to cross-reactivity.ObjectiveThis study investigated the frequency of co-sensitization and co-allergy between legumes and the role of different protein families.MethodsSix legume-allergic patient groups were included: peanut (n = 30), soybean (n = 30), lupine (n = 30), green pea (n = 30), lentil (n = 17), bean (n = 9). IgE binding to total extracts, protein fractions (7S/11S globulin, 2S albumin, albumin), and 16 individual proteins from 10 legumes (black lentil, blue lupine, chickpea, faba bean, green lentil, pea, peanut, soybean, white bean, and white lupine) was measured by line blotResultsCo-sensitization varied from 36.7% to 100%. Mono-sensitization was only found in soybean (16.7%), peanut (10%), and green pea-allergic (3.3%) patients. A high frequency of co-sensitization between the 7S/11S globulin fractions of all 10 legumes and individual 7S and 11S globulins was observed. In peanut and soybean-allergic patients, co-allergies for other legumes were uncommon (≤16,7%), while in green pea, lupine, lentil, and bean-allergic patients co-allergy for peanut (64.7%–77.8%) or soybean (50%–64.7%) was frequently seen.ConclusionCo-sensitization between legumes was high, but generally not clinically relevant. Co-allergy to other legumes was not often seen in peanut- and soybean allergic patients. The 7S and 11S globulins were likely responsible for the observed co-sensitization.
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Affiliation(s)
- Mark Smits
- Department of Dermatology/Allergology, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
- Center for Translational Immunology, University Medical Center Utrecht, Utrecht, Netherlands
- Risk Analysis for Products in Development, Netherlands Organisation for Applied Scientific Research (TNO), Utrecht, Netherlands
- Correspondence: Mark Smits Thuy-My Le
| | - Kitty Verhoeckx
- Department of Dermatology/Allergology, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
- Center for Translational Immunology, University Medical Center Utrecht, Utrecht, Netherlands
| | - André Knulst
- Department of Dermatology/Allergology, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
- Center for Translational Immunology, University Medical Center Utrecht, Utrecht, Netherlands
| | - Paco Welsing
- Department of Dermatology/Allergology, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht, Netherlands
| | - Aard de Jong
- Risk Analysis for Products in Development, Netherlands Organisation for Applied Scientific Research (TNO), Utrecht, Netherlands
- Fresh Food & Chains, Wageningen Food & Biobased Research, Wageningen University, Wageningen, Netherlands
| | - Marco Gaspari
- Research Centre for Advanced Biochemistry and Molecular Biology, Department of Experimental and Clinical Medicine, Magna Graecia University of Catanzaro, Catanzaro, Italy
| | - Anna Ehlers
- Department of Dermatology/Allergology, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
- Center for Translational Immunology, University Medical Center Utrecht, Utrecht, Netherlands
| | - Paulien Verhoeff
- Department of Dermatology/Allergology, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
- Center for Translational Immunology, University Medical Center Utrecht, Utrecht, Netherlands
| | - Geert Houben
- Department of Dermatology/Allergology, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
- Center for Translational Immunology, University Medical Center Utrecht, Utrecht, Netherlands
- Risk Analysis for Products in Development, Netherlands Organisation for Applied Scientific Research (TNO), Utrecht, Netherlands
| | - Thuy-My Le
- Department of Dermatology/Allergology, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
- Center for Translational Immunology, University Medical Center Utrecht, Utrecht, Netherlands
- Correspondence: Mark Smits Thuy-My Le
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A Proteinaceous Alpha-Amylase Inhibitor from Moringa Oleifera Leaf Extract: Purification, Characterization, and Insecticide Effects against C. maculates Insect Larvae. Molecules 2022; 27:molecules27134222. [PMID: 35807466 PMCID: PMC9268253 DOI: 10.3390/molecules27134222] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 06/15/2022] [Accepted: 06/20/2022] [Indexed: 11/26/2022] Open
Abstract
The main objective of the current study was the extraction, purification, and enzymatic characterization of a potent proteinaceous amylase inhibitor from Moringa oleifera. The antimicrobial potential and insecticide effects against C. maculates insect larvae were also studied. The α-amylase inhibitor was extracted in methanol (with an inhibitory activity of 65.6% ± 4.93). Afterwards, the inhibitor αAI.Mol was purified after a heat treatment at 70 °C for 15 min followed by one chromatographic step of Sephadex G-50. An apparent molecular weight of 25 kDa was analyzed, and the N-terminal sequence showed the highest identity level (89%) with the monomeric α-amylase inhibitor from Triticum dicoccoides. αAI.Mol was found to tolerate pH values ranging from 5.0 to 11.0 and showed maximal activity at pH 9.0. Thermal stability was remarkably important, since the inhibitory activity was maintained at 55% after 1 h of incubation at 70 °C and at 53% after an incubation of 45 min at 80 °C. The potency of the current purified inhibitor against amylases from different origins indicates that αAI.Mol seems to possess the highest affinity toward human salivary α-amylase (90% inhibitory activity), followed by the α-amylase of insects Callosobruchus maculatus and Tribolium confusum (71% and 61%, respectively). The kinetic parameters were also calculated, and the Kmax and Vmax of the digestive amylase were estimated at 185 (mmol/min/mg) and 0.13 mM, respectively. The inhibitor possesses a strong bactericidal effect against Gram+ and Gram- strains, and the MIC values were >1 against B. cereus but >6 against E. coli. Interestingly, the rates of survival and pupation of C. maculates insect larvae were remarkably affected by the purified αAI.Mol from Moringa oleifera.
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Salaria S, Boatwright JL, Thavarajah P, Kumar S, Thavarajah D. Protein Biofortification in Lentils ( Lens culinaris Medik.) Toward Human Health. FRONTIERS IN PLANT SCIENCE 2022; 13:869713. [PMID: 35449893 PMCID: PMC9016278 DOI: 10.3389/fpls.2022.869713] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Accepted: 03/14/2022] [Indexed: 05/11/2023]
Abstract
Lentil (Lens culinaris Medik.) is a nutritionally dense crop with significant quantities of protein, low-digestible carbohydrates, minerals, and vitamins. The amino acid composition of lentil protein can impact human health by maintaining amino acid balance for physiological functions and preventing protein-energy malnutrition and non-communicable diseases (NCDs). Thus, enhancing lentil protein quality through genetic biofortification, i.e., conventional plant breeding and molecular technologies, is vital for the nutritional improvement of lentil crops across the globe. This review highlights variation in protein concentration and quality across Lens species, genetic mechanisms controlling amino acid synthesis in plants, functions of amino acids, and the effect of antinutrients on the absorption of amino acids into the human body. Successful breeding strategies in lentils and other pulses are reviewed to demonstrate robust breeding approaches for protein biofortification. Future lentil breeding approaches will include rapid germplasm selection, phenotypic evaluation, genome-wide association studies, genetic engineering, and genome editing to select sequences that improve protein concentration and quality.
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Affiliation(s)
- Sonia Salaria
- Plant and Environmental Sciences, Clemson University, Clemson, SC, United States
| | - Jon Lucas Boatwright
- Plant and Environmental Sciences, Clemson University, Clemson, SC, United States
| | | | - Shiv Kumar
- Biodiversity and Crop Improvement Program, International Centre for Agricultural Research in the Dry Areas (ICARDA), Rabat-Institute, Rabat, Morocco
| | - Dil Thavarajah
- Plant and Environmental Sciences, Clemson University, Clemson, SC, United States
- *Correspondence: Dil Thavarajah,
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Sulatskaya AI, Kosolapova AO, Bobylev AG, Belousov MV, Antonets KS, Sulatsky MI, Kuznetsova IM, Turoverov KK, Stepanenko OV, Nizhnikov AA. β-Barrels and Amyloids: Structural Transitions, Biological Functions, and Pathogenesis. Int J Mol Sci 2021; 22:11316. [PMID: 34768745 PMCID: PMC8582884 DOI: 10.3390/ijms222111316] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 10/15/2021] [Accepted: 10/18/2021] [Indexed: 01/17/2023] Open
Abstract
Insoluble protein aggregates with fibrillar morphology called amyloids and β-barrel proteins both share a β-sheet-rich structure. Correctly folded β-barrel proteins can not only function in monomeric (dimeric) form, but also tend to interact with one another-followed, in several cases, by formation of higher order oligomers or even aggregates. In recent years, findings proving that β-barrel proteins can adopt cross-β amyloid folds have emerged. Different β-barrel proteins were shown to form amyloid fibrils in vitro. The formation of functional amyloids in vivo by β-barrel proteins for which the amyloid state is native was also discovered. In particular, several prokaryotic and eukaryotic proteins with β-barrel domains were demonstrated to form amyloids in vivo, where they participate in interspecies interactions and nutrient storage, respectively. According to recent observations, despite the variety of primary structures of amyloid-forming proteins, most of them can adopt a conformational state with the β-barrel topology. This state can be intermediate on the pathway of fibrillogenesis ("on-pathway state"), or can be formed as a result of an alternative assembly of partially unfolded monomers ("off-pathway state"). The β-barrel oligomers formed by amyloid proteins possess toxicity, and are likely to be involved in the development of amyloidoses, thus representing promising targets for potential therapy of these incurable diseases. Considering rapidly growing discoveries of the amyloid-forming β-barrels, we may suggest that their real number and diversity of functions are significantly higher than identified to date, and represent only "the tip of the iceberg". Here, we summarize the data on the amyloid-forming β-barrel proteins, their physicochemical properties, and their biological functions, and discuss probable means and consequences of the amyloidogenesis of these proteins, along with structural relationships between these two widespread types of β-folds.
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Affiliation(s)
- Anna I. Sulatskaya
- Laboratory for Proteomics of Supra-Organismal Systems, All-Russia Research Institute for Agricultural Microbiology, 3 Podbelskogo Sh., Pushkin, 196608 St. Petersburg, Russia; (A.I.S.); (A.O.K.); (M.V.B.); (K.S.A.)
- Laboratory of Structural Dynamics, Stability and Folding of Proteins, Institute of Cytology, Russian Academy of Sciences, 4 Tikhoretsky Av., 194064 St. Petersburg, Russia; (I.M.K.); (K.K.T.); (O.V.S.)
| | - Anastasiia O. Kosolapova
- Laboratory for Proteomics of Supra-Organismal Systems, All-Russia Research Institute for Agricultural Microbiology, 3 Podbelskogo Sh., Pushkin, 196608 St. Petersburg, Russia; (A.I.S.); (A.O.K.); (M.V.B.); (K.S.A.)
- Faculty of Biology, St. Petersburg State University, 7/9 Universitetskaya Emb., 199034 St. Petersburg, Russia
| | - Alexander G. Bobylev
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, 3 Institutskaya St., 142290 Moscow, Russia;
| | - Mikhail V. Belousov
- Laboratory for Proteomics of Supra-Organismal Systems, All-Russia Research Institute for Agricultural Microbiology, 3 Podbelskogo Sh., Pushkin, 196608 St. Petersburg, Russia; (A.I.S.); (A.O.K.); (M.V.B.); (K.S.A.)
- Faculty of Biology, St. Petersburg State University, 7/9 Universitetskaya Emb., 199034 St. Petersburg, Russia
| | - Kirill S. Antonets
- Laboratory for Proteomics of Supra-Organismal Systems, All-Russia Research Institute for Agricultural Microbiology, 3 Podbelskogo Sh., Pushkin, 196608 St. Petersburg, Russia; (A.I.S.); (A.O.K.); (M.V.B.); (K.S.A.)
- Faculty of Biology, St. Petersburg State University, 7/9 Universitetskaya Emb., 199034 St. Petersburg, Russia
| | - Maksim I. Sulatsky
- Laboratory of Cell Morphology, Institute of Cytology, Russian Academy of Sciences, 4 Tikhoretsky Av., 194064 St. Petersburg, Russia;
| | - Irina M. Kuznetsova
- Laboratory of Structural Dynamics, Stability and Folding of Proteins, Institute of Cytology, Russian Academy of Sciences, 4 Tikhoretsky Av., 194064 St. Petersburg, Russia; (I.M.K.); (K.K.T.); (O.V.S.)
| | - Konstantin K. Turoverov
- Laboratory of Structural Dynamics, Stability and Folding of Proteins, Institute of Cytology, Russian Academy of Sciences, 4 Tikhoretsky Av., 194064 St. Petersburg, Russia; (I.M.K.); (K.K.T.); (O.V.S.)
| | - Olesya V. Stepanenko
- Laboratory of Structural Dynamics, Stability and Folding of Proteins, Institute of Cytology, Russian Academy of Sciences, 4 Tikhoretsky Av., 194064 St. Petersburg, Russia; (I.M.K.); (K.K.T.); (O.V.S.)
| | - Anton A. Nizhnikov
- Laboratory for Proteomics of Supra-Organismal Systems, All-Russia Research Institute for Agricultural Microbiology, 3 Podbelskogo Sh., Pushkin, 196608 St. Petersburg, Russia; (A.I.S.); (A.O.K.); (M.V.B.); (K.S.A.)
- Faculty of Biology, St. Petersburg State University, 7/9 Universitetskaya Emb., 199034 St. Petersburg, Russia
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Smits M, Meijerink M, Le TM, Knulst A, de Jong A, Caspers MPM, Lima ES, Babé L, Ladics G, McClain S, Houben G, Verhoeckx K. Predicting the allergenicity of legume proteins using a PBMC gene expression assay. BMC Immunol 2021; 22:27. [PMID: 33849432 PMCID: PMC8042678 DOI: 10.1186/s12865-021-00415-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Accepted: 03/23/2021] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Food proteins differ in their allergenic potential. Currently, there is no predictive and validated bio-assay to evaluate the allergenicity of novel food proteins. The objective of this study was to investigate the potential of a human peripheral blood mononuclear cell (PBMC) gene expression assay to identify biomarkers to predict the allergenicity of legume proteins. RESULTS PBMCs from healthy donors were exposed to weakly and strongly allergenic legume proteins (2S albumins, and 7S and 11S globulins from white bean, soybean, peanut, pea and lupine) in three experiments. Possible biomarkers for allergenicity were investigated by exposing PBMCs to a protein pair of weakly (white bean) and strongly allergenic (soybean) 7S globulins in a pilot experiment. Gene expression was measured by RNA-sequencing and differentially expressed genes were selected as biomarkers. 153 genes were identified as having significantly different expression levels to the 7S globulin of white bean compared to soybean. Inclusion of multiple protein pairs from 2S albumins (lupine and peanut) and 7S globulins (white bean and soybean) in a larger study, led to the selection of CCL2, CCL7, and RASD2 as biomarkers to distinguish weakly from strongly allergenic proteins. The relevance of these three biomarkers was confirmed by qPCR when PBMCs were exposed to a larger panel of weakly and strongly allergenic legume proteins (2S albumins, and 7S and 11S globulins from white bean, soybean, peanut, pea and lupine). CONCLUSIONS The PBMC gene expression assay can potentially distinguish weakly from strongly allergenic legume proteins within a protein family, though it will be challenging to develop a generic method for all protein families from plant and animal sources. Graded responses within a protein family might be of more value in allergenicity prediction instead of a yes or no classification.
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Affiliation(s)
- Mark Smits
- Netherlands Organisation for Applied Scientific Research (TNO), Utrecht, The Netherlands
- Department of Dermatology and Allergology, University Medical Center Utrecht, Utrecht, The Netherlands
- Center of Translational Immunology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Marjolein Meijerink
- Netherlands Organisation for Applied Scientific Research (TNO), Utrecht, The Netherlands.
| | - Thuy-My Le
- Department of Dermatology and Allergology, University Medical Center Utrecht, Utrecht, The Netherlands
- Center of Translational Immunology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - André Knulst
- Department of Dermatology and Allergology, University Medical Center Utrecht, Utrecht, The Netherlands
- Center of Translational Immunology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Aard de Jong
- Netherlands Organisation for Applied Scientific Research (TNO), Utrecht, The Netherlands
| | | | - Everton Souto Lima
- Netherlands Organisation for Applied Scientific Research (TNO), Utrecht, The Netherlands
| | - Lilia Babé
- DuPont Nutrition and Biosciences, Palo Alto, CA, USA
| | | | - Scott McClain
- Formerly, Syngenta Crop Protection, LLC, 754 Research Triangle Park, Durham, USA
| | - Geert Houben
- Netherlands Organisation for Applied Scientific Research (TNO), Utrecht, The Netherlands
- Department of Dermatology and Allergology, University Medical Center Utrecht, Utrecht, The Netherlands
- Center of Translational Immunology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Kitty Verhoeckx
- Netherlands Organisation for Applied Scientific Research (TNO), Utrecht, The Netherlands
- Department of Dermatology and Allergology, University Medical Center Utrecht, Utrecht, The Netherlands
- Center of Translational Immunology, University Medical Center Utrecht, Utrecht, The Netherlands
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Nunes NN, Ferreira RS, de Sá LF, de Oliveira AEA, Oliva MLV. A novel cysteine proteinase inhibitor from seeds of Enterolobium contortisiliquum and its effect on Callosobruchus maculatus larvae. Biochem Biophys Rep 2021; 25:100876. [PMID: 33364447 PMCID: PMC7750491 DOI: 10.1016/j.bbrep.2020.100876] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 10/14/2020] [Accepted: 12/07/2020] [Indexed: 11/28/2022] Open
Abstract
This study focused on the characterization of a novel cysteine proteinase inhibitor from Enterolobium contortisiliquum seeds targeting the inhibition of the growth of Callosobruchus maculatus larvae, an important cosmopolitan pest of the cowpea Vigna unguiculata during storage. The inhibitor was isolated by ion-exchange besides of size exclusion chromatography. EcCI molecular mass is 19,757 Da, composed of two polypeptide chains. It strongly inhibits papain (Kiapp 0.036 nM) and proteinases from the midguts of C. maculatus (80 μg mL-1, 60% inhibition). The inhibitory activity is reduced by 40% after a heat treatment at 100 °C for 2 h. The protein displayed noxious activity at 0.5% and 1% (w/w) when incorporated in artificial seeds, reducing larval mass in 87% and 92%, respectively. Treatment of C. maculatus larvae with conjugated EcCI-FIT and subsequent biodistribution resulted in high fluorescence intensity in midguts and markedly low intensity in malpighian tubules and fat body. Small amounts of labeled proteins were detected in larvae feces. The detection of high fluorescence in larvae midguts and low fluorescence in their feces indicate the retention of the FITC conjugated EcCI inhibitor in larvae midguts. These results demonstrate the potential of the natural protein from E. contortisiliquum to inhibit the development of C. maculatus.
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Affiliation(s)
- Natalia N.S. Nunes
- Biochemistry Department, Universidade Federal de São Paulo-UNIFESP, 04044-020, São Paulo, SP, Brazil
| | - Rodrigo S. Ferreira
- Biochemistry Department, Universidade Federal de São Paulo-UNIFESP, 04044-020, São Paulo, SP, Brazil
| | - Leonardo F.R. de Sá
- Chemistry Laboratory on Chemistry and Function of Proteins and Peptides, Biosciences and Biotechnology Center, CBB, Universidade Estadual do Norte Fluminense Darcy Ribeiro -UENF, Campos dos Goytacazes, RJ, Brazil
| | - Antônia Elenir A. de Oliveira
- Chemistry Laboratory on Chemistry and Function of Proteins and Peptides, Biosciences and Biotechnology Center, CBB, Universidade Estadual do Norte Fluminense Darcy Ribeiro -UENF, Campos dos Goytacazes, RJ, Brazil
| | - Maria Luiza V. Oliva
- Biochemistry Department, Universidade Federal de São Paulo-UNIFESP, 04044-020, São Paulo, SP, Brazil
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Letting FK, Venkataramana PB, Ndakidemi PA. Breeding potential of lablab [ Lablab purpureus (L.) Sweet]: a review on characterization and bruchid studies towards improved production and utilization in Africa. GENETIC RESOURCES AND CROP EVOLUTION 2021; 68:3081-3101. [PMID: 34580565 PMCID: PMC8457029 DOI: 10.1007/s10722-021-01271-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Accepted: 09/14/2021] [Indexed: 05/15/2023]
Abstract
Lablab (Lablab purpureus) [Lablab purpureus (L.) Sweet] is termed a lost, underutilized and neglected crop in Africa. Despite the multipurpose use, production, consumption and research are still limited. Wide genetic diversity of lablab germplasm exists in Africa. Diversity studies provide significant information for subsequent research programs and improvement. The advent of genotyping and sequencing technologies has enabled the identification of unique and agronomically important traits. Application of next-generation sequencing on lablab as a pioneer orphan crop is currently underway. This has enabled description of the whole genome, generation of reference genome and resequencing that provide information on variation within the entire genome. Information from these technological advances helps in identifying potential traits for biotic and abiotic stress for further breeding programs. Storage pests specifically bruchids (Callosobruchus spp.), are considered a major obstacle in lablab production. Screening of available genotypes for bruchid resistance and studies on the physical and biochemical factors that confer resistance in lablab is required. Applying advanced technologies provides precise and reliable identification of the novel markers responsible for bruchid resistance allowing for introgression of important genes to breeding programs. This review provides a detailed analysis on the characterization of lablab and the information on bruchid resistance vital for breeding farmer-preferred varieties that possess agronomically beneficial traits. Concerted efforts and research on this neglected crop will enhance its production, utilization and consumption.
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Affiliation(s)
- Fanuel K. Letting
- Department of Sustainable Agriculture, Biodiversity and Ecosystems Management, School of Life Science and Bio-Engineering, The Nelson Mandela African Institution of Science and Technology, Arusha, Tanzania
- Department of Seed, Crop and Horticultural Sciences, School of Agriculture and Biotechnology, University of Eldoret, Eldoret, Kenya
| | - Pavithravani B. Venkataramana
- Department of Sustainable Agriculture, Biodiversity and Ecosystems Management, School of Life Science and Bio-Engineering, The Nelson Mandela African Institution of Science and Technology, Arusha, Tanzania
| | - Patrick A. Ndakidemi
- Department of Sustainable Agriculture, Biodiversity and Ecosystems Management, School of Life Science and Bio-Engineering, The Nelson Mandela African Institution of Science and Technology, Arusha, Tanzania
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Grahl MVC, Lopes FC, Martinelli AHS, Carlini CR, Fruttero LL. Structure-Function Insights of Jaburetox and Soyuretox: Novel Intrinsically Disordered Polypeptides Derived from Plant Ureases. Molecules 2020; 25:molecules25225338. [PMID: 33207637 PMCID: PMC7696265 DOI: 10.3390/molecules25225338] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 11/05/2020] [Accepted: 11/06/2020] [Indexed: 12/24/2022] Open
Abstract
Intrinsically disordered proteins (IDPs) and intrinsically disordered regions (IDRs) do not have a stable 3D structure but still have important biological activities. Jaburetox is a recombinant peptide derived from the jack bean (Canavalia ensiformis) urease and presents entomotoxic and antimicrobial actions. The structure of Jaburetox was elucidated using nuclear magnetic resonance which reveals it is an IDP with small amounts of secondary structure. Different approaches have demonstrated that Jaburetox acquires certain folding upon interaction with lipid membranes, a characteristic commonly found in other IDPs and usually important for their biological functions. Soyuretox, a recombinant peptide derived from the soybean (Glycine max) ubiquitous urease and homologous to Jaburetox, was also characterized for its biological activities and structural properties. Soyuretox is also an IDP, presenting more secondary structure in comparison with Jaburetox and similar entomotoxic and fungitoxic effects. Moreover, Soyuretox was found to be nontoxic to zebra fish, while Jaburetox was innocuous to mice and rats. This profile of toxicity affecting detrimental species without damaging mammals or the environment qualified them to be used in biotechnological applications. Both peptides were employed to develop transgenic crops and these plants were active against insects and nematodes, unveiling their immense potentiality for field applications.
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Affiliation(s)
- Matheus V. Coste Grahl
- Graduate Program in Medicine and Health Sciences, Brain Institute of Rio Grande do Sul (InsCer), Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre CEP 90610-000, Brazil;
| | - Fernanda Cortez Lopes
- Graduate Program in Cellular and Molecular Biology, Center of Biotechnology, Universidade Federal do Rio Grande do Sul (UFRGS), Av. Bento Gonçalves 9500, Building 43431, Porto Alegre CEP 91501-970, RS, Brazil;
| | - Anne H. Souza Martinelli
- Department of Biophysics & Deparment of Molecular Biology and Biotechnology-Biosciences Institute (IB), Universidade Federal do Rio Grande do Sul, UFRGS, Porto Alegre 91501-970, RS, Brazil;
| | - Celia R. Carlini
- Graduate Program in Medicine and Health Sciences, Brain Institute of Rio Grande do Sul (InsCer), Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre CEP 90610-000, Brazil;
- Brain Institute and School of Medicine, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre 90610-000, RS, Brazil
- Correspondence: (C.R.C.); (L.L.F.); Tel.: +55-51-3320-3485 (C.R.C.); +54-351-535-3850 (L.L.F.)
| | - Leonardo L. Fruttero
- Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba CP 5000, Argentina
- Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Córdoba CP 5000, Argentina
- Correspondence: (C.R.C.); (L.L.F.); Tel.: +55-51-3320-3485 (C.R.C.); +54-351-535-3850 (L.L.F.)
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GonÇalves FV, Medici LO, Fonseca MPSDA, Pimentel C, Gaziola SA, Azevedo RA. Protein, Phytate and Minerals in Grains of Commercial Cowpea Genotypes. AN ACAD BRAS CIENC 2020; 92:e20180484. [PMID: 32756834 DOI: 10.1590/0001-3765202020180484] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Accepted: 12/17/2018] [Indexed: 11/22/2022] Open
Abstract
The objective of this study was to investigate and characterize cowpea (Vigna unguiculata) genotypes for total grain protein content, storage protein fractions (globulin, albumin, prolamin, basic and acid glutelins), and phytate and minerals contents. Eighteen cowpea genotypes were selected. Total grain protein content varied from 21.4% to 29.2%, for BRS Marataoã and Paulistinha genotypes, respectively. The variation in the concentration of each protein fraction was significant (P<0.05) only for glutelins (basic and acid). The genotypes studied exhibited great similarity in the PAGE electrophoretic profile of the grain protein fractions and also in the mineral content. BRS Paraguaçu genotype exhibited higher Zn content than thegenotypes that have been previously recommended for this characteristic. The lowest phytate grain content was observed in four of the 18 genotypes studied, which also exhibited high protein contents. Although the results did not converge to the selection of a few genotypes, some specific differences were detected that which may be further explored. Considering total grain protein, mineral and phytate contents, the genotype Paulistinha revealed a better balance unveiling high grain total protein content, low grain phytate content and more homogeneous mineral composition.
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Affiliation(s)
- FabÍola V GonÇalves
- Universidade Federal Rural do Rio de Janeiro, Departamento de Fitotecnia - IA, BR 465, Km 47, 23897-000 Seropédica, RJ, Brazil
| | - Leonardo O Medici
- Universidade Federal Rural do Rio de Janeiro, Departamento de Ciências Fisiológicas - ICBS, BR 465, Km 47, 23897-000 Seropédica, RJ, Brazil
| | - Marcos Paulo S DA Fonseca
- Universidade Federal Rural do Rio de Janeiro, Departamento de Fitotecnia - IA, BR 465, Km 47, 23897-000 Seropédica, RJ, Brazil
| | - Carlos Pimentel
- Universidade Federal Rural do Rio de Janeiro, Departamento de Fitotecnia - IA, BR 465, Km 47, 23897-000 Seropédica, RJ, Brazil
| | - Salete A Gaziola
- Universidade de São Paulo, Departamento de Genética, Escola Superior de Agricultura "Luiz de Queiroz", v. Pádua Dias, 11, Agronomia, 13418-900 Piracicaba, SP, Brazil
| | - Ricardo A Azevedo
- Universidade de São Paulo, Departamento de Genética, Escola Superior de Agricultura "Luiz de Queiroz", v. Pádua Dias, 11, Agronomia, 13418-900 Piracicaba, SP, Brazil
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11
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Antonets KS, Belousov MV, Sulatskaya AI, Belousova ME, Kosolapova AO, Sulatsky MI, Andreeva EA, Zykin PA, Malovichko YV, Shtark OY, Lykholay AN, Volkov KV, Kuznetsova IM, Turoverov KK, Kochetkova EY, Bobylev AG, Usachev KS, Demidov ON, Tikhonovich IA, Nizhnikov AA. Accumulation of storage proteins in plant seeds is mediated by amyloid formation. PLoS Biol 2020; 18:e3000564. [PMID: 32701952 PMCID: PMC7377382 DOI: 10.1371/journal.pbio.3000564] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2019] [Accepted: 06/19/2020] [Indexed: 02/04/2023] Open
Abstract
Amyloids are protein aggregates with a highly ordered spatial structure giving them unique physicochemical properties. Different amyloids not only participate in the development of numerous incurable diseases but control vital functions in archaea, bacteria and eukarya. Plants are a poorly studied systematic group in the field of amyloid biology. Amyloid properties have not yet been demonstrated for plant proteins under native conditions in vivo. Here we show that seeds of garden pea Pisum sativum L. contain amyloid-like aggregates of storage proteins, the most abundant one, 7S globulin Vicilin, forms bona fide amyloids in vivo and in vitro. Full-length Vicilin contains 2 evolutionary conserved β-barrel domains, Cupin-1.1 and Cupin-1.2, that self-assemble in vitro into amyloid fibrils with similar physicochemical properties. However, Cupin-1.2 fibrils unlike Cupin-1.1 can seed Vicilin fibrillation. In vivo, Vicilin forms amyloids in the cotyledon cells that bind amyloid-specific dyes and possess resistance to detergents and proteases. The Vicilin amyloid accumulation increases during seed maturation and wanes at germination. Amyloids of Vicilin resist digestion by gastrointestinal enzymes, persist in canned peas, and exhibit toxicity for yeast and mammalian cells. Our finding for the first time reveals involvement of amyloid formation in the accumulation of storage proteins in plant seeds.
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Affiliation(s)
- Kirill S. Antonets
- All-Russia Research Institute for Agricultural Microbiology (ARRIAM), St. Petersburg, Russia
- St. Petersburg State University, St. Petersburg, Russia
| | - Mikhail V. Belousov
- All-Russia Research Institute for Agricultural Microbiology (ARRIAM), St. Petersburg, Russia
- St. Petersburg State University, St. Petersburg, Russia
| | - Anna I. Sulatskaya
- Institute of Cytology, Russian Academy of Sciences, St. Petersburg, Russia
| | - Maria E. Belousova
- All-Russia Research Institute for Agricultural Microbiology (ARRIAM), St. Petersburg, Russia
| | - Anastasiia O. Kosolapova
- All-Russia Research Institute for Agricultural Microbiology (ARRIAM), St. Petersburg, Russia
- St. Petersburg State University, St. Petersburg, Russia
| | - Maksim I. Sulatsky
- Institute of Cytology, Russian Academy of Sciences, St. Petersburg, Russia
| | | | | | - Yury V. Malovichko
- All-Russia Research Institute for Agricultural Microbiology (ARRIAM), St. Petersburg, Russia
- St. Petersburg State University, St. Petersburg, Russia
| | - Oksana Y. Shtark
- All-Russia Research Institute for Agricultural Microbiology (ARRIAM), St. Petersburg, Russia
| | | | | | | | | | | | - Alexander G. Bobylev
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino, Moscow Region, Russia
| | - Konstantin S. Usachev
- Laboratory of Structural Biology, Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russia
| | - Oleg. N. Demidov
- Institute of Cytology, Russian Academy of Sciences, St. Petersburg, Russia
- INSERM UMR1231, UBFC, Dijon, France
| | - Igor A. Tikhonovich
- All-Russia Research Institute for Agricultural Microbiology (ARRIAM), St. Petersburg, Russia
- St. Petersburg State University, St. Petersburg, Russia
| | - Anton A. Nizhnikov
- All-Russia Research Institute for Agricultural Microbiology (ARRIAM), St. Petersburg, Russia
- St. Petersburg State University, St. Petersburg, Russia
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12
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Martínez-López AL, Pangua C, Reboredo C, Campión R, Morales-Gracia J, Irache JM. Protein-based nanoparticles for drug delivery purposes. Int J Pharm 2020; 581:119289. [DOI: 10.1016/j.ijpharm.2020.119289] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 03/27/2020] [Accepted: 03/28/2020] [Indexed: 02/07/2023]
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13
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Comparative study of 7S globulin from Corylus avellana and Solanum lycopersicum revealed importance of salicylic acid and Cu-binding loop in modulating their function. Biochem Biophys Res Commun 2020; 522:127-132. [PMID: 31753489 DOI: 10.1016/j.bbrc.2019.11.072] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Accepted: 11/12/2019] [Indexed: 11/22/2022]
Abstract
The plant seed proteins referred to as vicilins belong to a structurally common superfamily. While some of them are reported to exhibit superoxide dismutase activity, vicilins from other sources do not possess this activity. Vicilin from Corylus avellana (HZ.1) and Solanum lycopersicum (SL80.1) were purified and subjected to structure-function analysis. The superoxide dismutase activity assays were performed to understand the functional differences between them. While SL80.1 has the superoxide dismutase activity, HZ.1 was enzymatically inactive. Crystal structure followed by mass spectrometry analysis of both the proteins revealed that while SL80.1 has bound salicylic acid, HZ.1 does not. Comparison of C-terminal binding pocket of both the structures revealed that a point mutation at residue 321 in HZ.1 (Gly→Cys) leads to obstruction in binding of salicylic acid in the pocket. Similarly, copper-binding loop of HZ.1 was reportedly found to be intact and shorter than the loops reported in SL80.1. The copper-binding loop of SL80.1 is rich in polar residues and the absence of these residues in HZ.1 copper-binding loop possibly indicates deficiency in channeling of oxygen radicals to the active center of the enzyme. Difference in the enzymatic activity of vicilin from two evolutionarily distinct sources is due to mutations in its co-factor binding pocket and copper-binding loop.
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14
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Khazaei H, Subedi M, Nickerson M, Martínez-Villaluenga C, Frias J, Vandenberg A. Seed Protein of Lentils: Current Status, Progress, and Food Applications. Foods 2019; 8:E391. [PMID: 31487958 PMCID: PMC6769807 DOI: 10.3390/foods8090391] [Citation(s) in RCA: 87] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2019] [Revised: 08/28/2019] [Accepted: 08/30/2019] [Indexed: 11/17/2022] Open
Abstract
Grain legumes are widely recognized as staple sources of dietary protein worldwide. Lentil seeds are an excellent source of plant-based proteins and represent a viable alternative to animal and soybean proteins for food processing formulations. Lentil proteins provide not only dietary amino acids but are also a source of bioactive peptides that provide health benefits. This review focuses on the current knowledge of seed protein, extraction and isolation methods, bioactive peptides, and food applications of lentil protein. Lentil is the most rapidly expanding crop for direct human consumption, and has potential for greater impact as a protein source for food processing applications. Improvements in lentil protein quality, amino acid composition, and processing fractions will enhance the nutritional quality of this rapidly expanding crop globally.
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Affiliation(s)
- Hamid Khazaei
- Department of Plant Sciences, University of Saskatchewan, Saskatoon, SK S7N 5A8, Canada.
| | - Maya Subedi
- Department of Plant Sciences, University of Saskatchewan, Saskatoon, SK S7N 5A8, Canada
| | - Mike Nickerson
- Food and Bioproduct Sciences, University of Saskatchewan, Saskatoon, SK S7N 5A8, Canada
| | - Cristina Martínez-Villaluenga
- Institute of Food Science, Technology and Nutrition (ICTAN), Spanish National Research Council (CSIC), Jose Antonio Novais 10, 28040 Madrid, Spain
| | - Juana Frias
- Institute of Food Science, Technology and Nutrition (ICTAN), Spanish National Research Council (CSIC), Jose Antonio Novais 10, 28040 Madrid, Spain
| | - Albert Vandenberg
- Department of Plant Sciences, University of Saskatchewan, Saskatoon, SK S7N 5A8, Canada
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15
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Choi WC, Parr T, Lim YS. The impact of four processing methods on trypsin-, chymotrypsin- and alpha-amylase inhibitors present in underutilised legumes. JOURNAL OF FOOD SCIENCE AND TECHNOLOGY 2019; 56:281-289. [PMID: 30728570 DOI: 10.1007/s13197-018-3488-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 10/27/2018] [Accepted: 11/02/2018] [Indexed: 11/26/2022]
Abstract
The global trend in increasing plant-based protein diets due to health and ideological reasons, has created an increased demand for food legumes that exceeds current production. To meet this demand, it is timely to reduce relying solely on soybean, and explore the potential of the underutilised legumes that are cultivated regionally. Underutilised legumes are rich in protein, carbohydrates and other nutrients that are essential for consumer. However, relatively little is known about their anti-nutritional properties and processing methods. Anti-nutritional factors (ANFs) such as enzyme inhibitors are prevalent in legumes and may interfere with digestibility and nutrient absorption. Nevertheless, an optimised food processing method will overcome this challenge and warrant a safe inclusion of legume in plant-based protein diets. Hence current study aimed to optimise the food processing methods (soaking, wet heating, autoclaving and freezing) and evaluate their efficiency in eliminating the enzyme inhibitors [trypsin, chymotrypsin (CIA) and α-amylase (AIA) inhibitors] present in seven underutilised legumes. Current study showed that autoclaving at 121 °C for 15 min reduced the AIA in all underutilised legumes tested. The AIA and CIA of bambara groundnut were successfully inactivated by wet heating at 50 °C for 60 min, and by autoclaving at 121 °C for 15 min. While the CIA of chickpea was successfully inactivated by freezing at - 80 °C for 24 h.
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Affiliation(s)
- Wai Chuen Choi
- 1School of Biosciences, Faculty of Science, University of Nottingham Malaysia Campus, Jalan Broga, 43500 Semenyih, Selangor Darul Ehsan Malaysia
| | - Tim Parr
- 2Division of Nutritional Sciences, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire LE12 5RD UK
| | - Yin Sze Lim
- 1School of Biosciences, Faculty of Science, University of Nottingham Malaysia Campus, Jalan Broga, 43500 Semenyih, Selangor Darul Ehsan Malaysia
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16
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Analysis of genes encoding seed storage proteins (SSPs) in chickpea (Cicer arietinum L.) reveals co-expressing transcription factors and a seed-specific promoter. Funct Integr Genomics 2018; 19:373-390. [PMID: 30560463 DOI: 10.1007/s10142-018-0650-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 11/22/2018] [Accepted: 11/26/2018] [Indexed: 12/27/2022]
Abstract
Improvement of the quality and quantity of chickpea seed protein can be greatly facilitated by an understanding of the genic organization and the genetic architecture of the genes encoding seed storage proteins (SSPs). The aim of this study was to provide a comprehensive analysis of the chickpea SSP genes, putative co-expressing transcription factors (TFs), and to identify a seed-specific SSP gene promoter. A genome-wide identification of SSP genes in chickpea led to the identification of 21 non-redundant SSP encoding genes located on 6 chromosomes. Phylogenetic analysis grouped SSP genes into 3 subgroups where members within the same clade demonstrated similar motif composition and intron-exon organization. Tandem duplications were identified to be the major contributors to the expansion of the SSP gene family in chickpea. Co-expression analysis revealed 14 TFs having expression profiles similar to the SSP genes that included members of important TF families that are known to regulate seed development. Expression analysis of SSP genes and TFs revealed significantly higher expression in late stages of seed development as well as in high seed protein content (HPC) genotypes. In silico analysis of the promoter regions of the SSP encoding genes revealed several seed-specific cis-regulatory elements such as RY repeats, ACGT motifs, CAANTG, and GCN4. A candidate promoter was analyzed for seed specificity by generating stable transgenics in Arabidopsis. Overall, this study provides a useful resource to explore the regulatory networks involved in SSP synthesis and/or accumulation for utilization in developing nutritionally improved chickpea genotypes.
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17
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Chen YH, Ruiz-Arocho J, von Wettberg EJ. Crop domestication: anthropogenic effects on insect-plant interactions in agroecosystems. CURRENT OPINION IN INSECT SCIENCE 2018; 29:56-63. [PMID: 30551826 DOI: 10.1016/j.cois.2018.06.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 06/13/2018] [Accepted: 06/20/2018] [Indexed: 05/14/2023]
Abstract
Although crop domestication is considered a model system for understanding evolution, the eco-evolutionary effects of domesticated crops on higher trophic levels have rarely been discussed. Changes in size, shape, quality, or timing of plant traits during domestication can influence entire arthropod communities. The plant traits specific to crop plants can be rare in nature. In the face of such novelty, it is important to understand how species and trophic levels vary in their responses. Although the evidence is still limited, crop domestication can influence the ecology, genetics, and evolution of plants, insect herbivores, natural enemies, and pollinators. We call for more study on how eco-evolutionary processes operate under domestication to provide new insight on the sustainability of species interactions within agroecosystems.
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Affiliation(s)
- Yolanda H Chen
- Department of Plant and Soil Science, University of Vermont, Burlington, VT, USA.
| | - Jorge Ruiz-Arocho
- Department of Plant and Soil Science, University of Vermont, Burlington, VT, USA
| | - Eric Jb von Wettberg
- Department of Plant and Soil Science, University of Vermont, Burlington, VT, USA
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18
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Weiss J, Terry MI, Martos-Fuentes M, Letourneux L, Ruiz-Hernández V, Fernández JA, Egea-Cortines M. Diel pattern of circadian clock and storage protein gene expression in leaves and during seed filling in cowpea (Vigna unguiculata). BMC PLANT BIOLOGY 2018; 18:33. [PMID: 29444635 PMCID: PMC5813328 DOI: 10.1186/s12870-018-1244-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Accepted: 01/18/2018] [Indexed: 05/15/2023]
Abstract
BACKGROUND Cowpea (Vigna unguiculata) is an important source of protein supply for animal and human nutrition. The major storage globulins VICILIN and LEGUMIN (LEG) are synthesized from several genes including LEGA, LEGB, LEGJ and CVC (CONVICILIN). The current hypothesis is that the plant circadian core clock genes are conserved in a wide array of species and that primary metabolism is to a large extent controlled by the plant circadian clock. Our aim was to investigate a possible link between gene expression of storage proteins and the circadian clock. RESULTS We identified cowpea orthologues of the core clock genes VunLHY, VunTOC1, VunGI and VunELF3, the protein storage genes VunLEG, VunLEGJ, and VunCVC as well as nine candidate reference genes used in RT-PCR. ELONGATION FACTOR 1-A (ELF1A) resulted the most suitable reference gene. The clock genes VunELF3, VunGI, VunTOC1 and VunLHY showed a rhythmic expression profile in leaves with a typical evening/night and morning/midday phased expression. The diel patterns were not completely robust and only VungGI and VungELF3 retained a rhythmic pattern under free running conditions of darkness. Under field conditions, rhythmicity and phasing apparently faded during early pod and seed development and was regained in ripening pods for VunTOC1 and VunLHY. Mature seeds showed a rhythmic expression of VunGI resembling leaf tissue under controlled growth chamber conditions. Comparing time windows during developmental stages we found that VunCVC and VunLEG were significantly down regulated during the night in mature pods as compared to intermediate ripe pods, while changes in seeds were non-significant due to high variance. The rhythmic expression under field conditions was lost under growth chamber conditions. CONCLUSIONS The core clock gene network is conserved in cowpea leaves showing a robust diel expression pattern except VunELF3 under growth chamber conditions. There appears to be a clock transcriptional reprogramming in pods and seeds compared to leaves. Storage protein deposition may be circadian regulated under field conditions but the strong environmental signals are not met under artificial growth conditions. Diel expression pattern in field conditions may result in better usage of energy for protein storage.
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Affiliation(s)
- Julia Weiss
- Genetics, ETSIA, Instituto de Biotecnología Vegetal, Universidad Politécnica de Cartagena, 30202, Cartagena, Spain.
| | - Marta I Terry
- Genetics, ETSIA, Instituto de Biotecnología Vegetal, Universidad Politécnica de Cartagena, 30202, Cartagena, Spain
| | - Marina Martos-Fuentes
- Genetics, ETSIA, Instituto de Biotecnología Vegetal, Universidad Politécnica de Cartagena, 30202, Cartagena, Spain
| | - Lisa Letourneux
- Mapping Consulting, 26 Rue St Antoine du T, 31000, Toulouse, France
| | - Victoria Ruiz-Hernández
- Genetics, ETSIA, Instituto de Biotecnología Vegetal, Universidad Politécnica de Cartagena, 30202, Cartagena, Spain
| | - Juan A Fernández
- Producción Vegetal, ETSIA, Instituto de Biotecnología Vegetal, Universidad Politécnica de Cartagena, 30202, Cartagena, Spain
| | - Marcos Egea-Cortines
- Genetics, ETSIA, Instituto de Biotecnología Vegetal, Universidad Politécnica de Cartagena, 30202, Cartagena, Spain
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Yin Y, Qi F, Gao L, Rao S, Yang Z, Fang W. iTRAQ-based quantitative proteomic analysis of dark-germinated soybeans in response to salt stress. RSC Adv 2018; 8:17905-17913. [PMID: 35542093 PMCID: PMC9080483 DOI: 10.1039/c8ra02996b] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2018] [Accepted: 05/01/2018] [Indexed: 11/21/2022] Open
Abstract
iTRAQ-based quantitative proteomic analysis reveals the molecular mechanisms of dark-germinated soybeans in response to salt stress.
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Affiliation(s)
- Yongqi Yin
- College of Food Science and Technology
- Yangzhou University
- Yangzhou
- People’s Republic of China
| | - Fei Qi
- College of Food Science and Technology
- Yangzhou University
- Yangzhou
- People’s Republic of China
| | - Lu Gao
- College of Food Science and Technology
- Yangzhou University
- Yangzhou
- People’s Republic of China
| | - Shengqi Rao
- College of Food Science and Technology
- Yangzhou University
- Yangzhou
- People’s Republic of China
| | - Zhenquan Yang
- College of Food Science and Technology
- Yangzhou University
- Yangzhou
- People’s Republic of China
| | - Weiming Fang
- College of Food Science and Technology
- Yangzhou University
- Yangzhou
- People’s Republic of China
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20
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Liu MS, Kuo TCY, Ko CY, Wu DC, Li KY, Lin WJ, Lin CP, Wang YW, Schafleitner R, Lo HF, Chen CY, Chen LFO. Genomic and transcriptomic comparison of nucleotide variations for insights into bruchid resistance of mungbean (Vigna radiata [L.] R. Wilczek). BMC PLANT BIOLOGY 2016; 16:46. [PMID: 26887961 PMCID: PMC4756517 DOI: 10.1186/s12870-016-0736-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2015] [Accepted: 02/09/2016] [Indexed: 05/03/2023]
Abstract
BACKGROUND Mungbean (Vigna radiata [L.] R. Wilczek) is an important legume crop with high nutritional value in South and Southeast Asia. The crop plant is susceptible to a storage pest caused by bruchids (Callosobruchus spp.). Some wild and cultivated mungbean accessions show resistance to bruchids. Genomic and transcriptomic comparison of bruchid-resistant and -susceptible mungbean could reveal bruchid-resistant genes (Br) for this pest and give insights into the bruchid resistance of mungbean. RESULTS Flow cytometry showed that the genome size varied by 61 Mb (mega base pairs) among the tested mungbean accessions. Next generation sequencing followed by de novo assembly of the genome of the bruchid-resistant recombinant inbred line 59 (RIL59) revealed more than 42,000 genes. Transcriptomic comparison of bruchid-resistant and -susceptible parental lines and their offspring identified 91 differentially expressed genes (DEGs) classified into 17 major and 74 minor bruchid-resistance-associated genes. We found 408 nucleotide variations (NVs) between bruchid-resistant and -susceptible lines in regions spanning 2 kb (kilo base pairs) of the promoters of 68 DEGs. Furthermore, 282 NVs were identified on exons of 148 sequence-changed-protein genes (SCPs). DEGs and SCPs comprised genes involved in resistant-related, transposable elements (TEs) and conserved metabolic pathways. A large number of these genes were mapped to a region on chromosome 5. Molecular markers designed for variants of putative bruchid-resistance-associated genes were highly diagnostic for the bruchid-resistant genotype. CONCLUSIONS In addition to identifying bruchid-resistance-associated genes, we found that conserved metabolism and TEs may be modifier factors for bruchid resistance of mungbean. The genome sequence of a bruchid-resistant inbred line, candidate genes and sequence variations in promoter regions and exons putatively conditioning resistance as well as markers detecting these variants could be used for development of bruchid-resistant mungbean varieties.
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Affiliation(s)
- Mao-Sen Liu
- Institute of Plant and Microbial Biology, Academia Sinica, 128 Sec. 2, Academia Rd, Nankang, Taipei, 11529, Taiwan.
| | - Tony Chien-Yen Kuo
- Institute of Plant and Microbial Biology, Academia Sinica, 128 Sec. 2, Academia Rd, Nankang, Taipei, 11529, Taiwan.
- Department of Bio-Industrial Mechatronics Engineering, National Taiwan University, Taipei, 106, Taiwan.
| | - Chia-Yun Ko
- Institute of Plant and Microbial Biology, Academia Sinica, 128 Sec. 2, Academia Rd, Nankang, Taipei, 11529, Taiwan.
| | - Dung-Chi Wu
- Institute of Plant and Microbial Biology, Academia Sinica, 128 Sec. 2, Academia Rd, Nankang, Taipei, 11529, Taiwan.
- Department of Bio-Industrial Mechatronics Engineering, National Taiwan University, Taipei, 106, Taiwan.
| | - Kuan-Yi Li
- Institute of Plant and Microbial Biology, Academia Sinica, 128 Sec. 2, Academia Rd, Nankang, Taipei, 11529, Taiwan.
- Department of Bio-Industrial Mechatronics Engineering, National Taiwan University, Taipei, 106, Taiwan.
| | - Wu-Jui Lin
- Institute of Plant and Microbial Biology, Academia Sinica, 128 Sec. 2, Academia Rd, Nankang, Taipei, 11529, Taiwan.
- Department of Horticulture and Landscape Architecture, National Taiwan University, Taipei, 106, Taiwan.
| | - Ching-Ping Lin
- Institute of Plant and Microbial Biology, Academia Sinica, 128 Sec. 2, Academia Rd, Nankang, Taipei, 11529, Taiwan.
| | - Yen-Wei Wang
- AVRDC-the World Vegetable Center, 60 Yi-min Liao, Shanhua, Tainan, 74151, Taiwan.
| | - Roland Schafleitner
- AVRDC-the World Vegetable Center, 60 Yi-min Liao, Shanhua, Tainan, 74151, Taiwan.
| | - Hsiao-Feng Lo
- Department of Horticulture and Landscape Architecture, National Taiwan University, Taipei, 106, Taiwan.
| | - Chien-Yu Chen
- Department of Bio-Industrial Mechatronics Engineering, National Taiwan University, Taipei, 106, Taiwan.
| | - Long-Fang O Chen
- Institute of Plant and Microbial Biology, Academia Sinica, 128 Sec. 2, Academia Rd, Nankang, Taipei, 11529, Taiwan.
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Yin Y, Yang R, Han Y, Gu Z. Comparative proteomic and physiological analyses reveal the protective effect of exogenous calcium on the germinating soybean response to salt stress. J Proteomics 2015; 113:110-26. [PMID: 25284050 DOI: 10.1016/j.jprot.2014.09.023] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2014] [Revised: 09/22/2014] [Accepted: 09/26/2014] [Indexed: 01/16/2023]
Abstract
Calcium enhances salt stress tolerance of soybeans. Nevertheless, the molecular mechanism of calcium's involvement in resistance to salt stress is unclear. A comparative proteomic approach was used to investigate protein profiles in germinating soybeans under NaCl-CaCl2 and NaCl-LaCl3 treatments. A total of 80 proteins affected by calcium in 4-day-old germinating soybean cotyledons and 71 in embryos were confidently identified. The clustering analysis showed proteins were subdivided into 5 and 6 clusters in cotyledon and embryo, respectively. Among them, proteins involved in signal transduction and energy pathways, in transportation, and in protein biosynthesis were largely enriched while those involved in proteolysis were decreased. Abundance of nucleoside diphosphate kinase and three antioxidant enzymes were visibly increased by calcium. Accumulation of gamma-aminobutyric acid and polyamines was also detected after application of exogenous calcium. This was consistent with proteomic results, which showed that proteins involved in the glutamate and methionine metabolism were mediated by calcium. Calcium could increase the salt stress tolerance of germinating soybeans via enriching signal transduction, energy pathway and transportation, promoting protein biosynthesis, inhibiting proteolysis, redistributing storage proteins, regulating protein processing in endoplasmic reticulum, enriching antioxidant enzymes and activating their activities, accumulating secondary metabolites and osmolytes, and other adaptive responses. Biological significance Soybean (Glycine max L.), as a traditional edible legume, is being targeted for designing functional foods. During soybean germination under stressful conditions especially salt stress, newly discovered functional components such as gamma-aminobutyric acid (GABA) are rapidly accumulated. However, soybean plants are relatively salt-sensitive and the growth, development and biomass of germinating soybeans are significantly suppressed under salt stress condition. According to previous studies, exogenous calcium counters the harmful effect of salt stress and increases the biomass and GABA content of germinating soybeans. Nevertheless, the precise molecular mechanism underlying the role of calcium in resistance to salt stress is still unknown. This paper is the first study employing comparative proteomic and physiological analyses to reveal the protective effect of exogenous calcium in the germinating soybean response to salt stress. Our study links the biological events with proteomic information and provides detailed peptide information on all identified proteins. The functions of those significantly changed proteins are also analyzed. The physiological and comparative proteomic analyses revealed the putative molecular mechanism of exogenous calcium treatment induced salt stress responses. The findings from this paper are beneficial to high GABA-rich germinating soybean biomass. Additionally, these findings also might be applicable to the genetic engineering of soybean plants to improve stress tolerance.
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Affiliation(s)
- Yongqi Yin
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, PR China; College of Food Science and Technology, Yangzhou University, Yangzhou, Jiangsu 225127, PR China
| | - Runqiang Yang
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, PR China
| | - Yongbin Han
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, PR China
| | - Zhenxin Gu
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, PR China.
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Rashydov NM, Hajduch M. Chernobyl seed project. Advances in the identification of differentially abundant proteins in a radio-contaminated environment. FRONTIERS IN PLANT SCIENCE 2015. [PMID: 26217350 PMCID: PMC4492160 DOI: 10.3389/fpls.2015.00493] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Plants have the ability to grow and successfully reproduce in radio-contaminated environments, which has been highlighted by nuclear accidents at Chernobyl (1986) and Fukushima (2011). The main aim of this article is to summarize the advances of the Chernobyl seed project which has the purpose to provide proteomic characterization of plants grown in the Chernobyl area. We present a summary of comparative proteomic studies on soybean and flax seeds harvested from radio-contaminated Chernobyl areas during two successive generations. Using experimental design developed for radio-contaminated areas, altered abundances of glycine betaine, seed storage proteins, and proteins associated with carbon assimilation into fatty acids were detected. Similar studies in Fukushima radio-contaminated areas might complement these data. The results from these Chernobyl experiments can be viewed in a user-friendly format at a dedicated web-based database freely available at http://www.chernobylproteomics.sav.sk.
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Affiliation(s)
- Namik M. Rashydov
- Department of Biophysics and Radiobiology, Institute of Cell Biology and Genetic Engineering, National Academy of Sciences of Ukraine, KievUkraine
| | - Martin Hajduch
- Department of Developmental and Reproduction Biology, Institute of Plant Genetics and Biotechnology, Slovak Academy of Sciences, NitraSlovakia
- *Correspondence: Martin Hajduch, Department of Developmental and Reproduction Biology, Institute of Plant Genetics and Biotechnology, Slovak Academy of Sciences, Akademicka 2, P.O. Box 39A, Nitra, Slovakia,
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Yin Y, Yang R, Gu Z. Organ-specific proteomic analysis of NaCl-stressed germinating soybeans. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:7233-44. [PMID: 24960070 DOI: 10.1021/jf500851r] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A comparative proteomic approach was employed to explore proteome expression patterns in germinating soybeans under NaCl stress and NaCl-aminoguanidine treatment. The proteins were extracted from 4-day-old germinating soybean cotyledons and noncotyledons (hypocotyl and radicle) and were separated using two-dimensional polyacrylamide gel electrophoresis. A total of 63 and 72 differentially expressed proteins were confidently identified by MALDI-TOF/TOF in the noncotyledons and cotyledons, respectively. These identified proteins were divided into ten functional groups and most of them were predicted to be cytoplasmic proteins in noncotyledons. Moreover, γ-aminobutyric acid was accumulated while the major allergen (Bd 30K protein) was reduced in the germinating soybeans. The proteins involved in energy metabolism and in protein processing in endoplasmic reticulum were enriched under NaCl stress. Meanwhile, the negative effect of stress was aggravated once polyamine degradation was inhibited. Redistribution of storage proteins under stress indicated that storage proteins might not only function as seed storage reserves but also have additional roles in plant defense.
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Affiliation(s)
- Yongqi Yin
- College of Food Science and Technology, Nanjing Agricultural University , Nanjing, Jiangsu 210095, People's Republic of China
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25
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Molina D, Patiño L, Quintero M, Cortes J, Bastos S. Effects of the aspartic protease inhibitor from Lupinus bogotensis seeds on the growth and development of Hypothenemus hampei: an inhibitor showing high homology with storage proteins. PHYTOCHEMISTRY 2014; 98:69-77. [PMID: 24314849 DOI: 10.1016/j.phytochem.2013.11.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2013] [Revised: 06/14/2013] [Accepted: 11/05/2013] [Indexed: 06/02/2023]
Abstract
The coffee berry borer Hypothenemus hampei is a pest that causes great economic damage to coffee grains worldwide. Because the proteins consumed are digested by aspartic proteases in the insect's midgut, the inhibition of these proteases by transferring a gene encoding an aspartic protease inhibitor from Lupinus bogotensis Benth. to coffee plants could provide a promising strategy to control this pest. Five aspartic protease inhibitors from L. bogotensis (LbAPI) were accordingly purified and characterized. The gene encoding the L. bogotensis aspartic protease inhibitor (LbAPI), with the highest inhibitory activity against H. hampei, was expressed in Escherichia coli and the purified recombinant protein (rLbAPI), with a molecular mass of 15 kDa, was subsequently assessed for its ability to inhibit the aspartic protease activity present in the H. hampei midgut in vitro, as well as its effects on the growth and development of H. hampei in vivo. The in vitro experiments showed that rLbAPI was highly effective against aspartic proteases from H. hampei guts, with a half maximal inhibitory concentration (IC50) of 2.9 μg. The in vivo experiments showed that the concentration of rLbAPI (w/w) in the artificial diet necessary to cause 50% mortality (LD50) of the larvae was 0.91%. The amino acid sequence of LbAPI had high homology (52-80%) to the seed storage proteins, vicilin and β-conglutin, suggesting that this protein was generated by evolutionary events from a β-conglutin precursor. Based on these results, LbAPI may have a dual function as storage protein, and as defense protein against H. hampei. These results provide a promising alternative to obtain a coffee plant resistant to H. hampei.
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Affiliation(s)
- Diana Molina
- National Coffee Research Center (Cenicafé), Plant Breeding Department, Plan Alto, Km 4 vía antigua Chinchina-Manizales, Manizales, Caldas, Colombia.
| | - Luisa Patiño
- National Coffee Research Center (Cenicafé), Plant Breeding Department, Plan Alto, Km 4 vía antigua Chinchina-Manizales, Manizales, Caldas, Colombia.
| | - Mónica Quintero
- National Coffee Research Center (Cenicafé), Plant Breeding Department, Plan Alto, Km 4 vía antigua Chinchina-Manizales, Manizales, Caldas, Colombia.
| | - José Cortes
- National Coffee Research Center (Cenicafé), Plant Breeding Department, Plan Alto, Km 4 vía antigua Chinchina-Manizales, Manizales, Caldas, Colombia.
| | - Sara Bastos
- McGill University, Department of Biochemistry, Francesco Bellini Life Sciences Building, 3649 Promenade Sir William Osler, Montreal, Quebec, Canada.
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de Sá LFR, Wermelinger TT, Ribeiro EDS, Gravina GDA, Fernandes KVS, Xavier-Filho J, Venancio TM, Rezende GL, Oliveira AEA. Effects of Phaseolus vulgaris (Fabaceae) seed coat on the embryonic and larval development of the cowpea weevil Callosobruchus maculatus (Coleoptera: Bruchidae). JOURNAL OF INSECT PHYSIOLOGY 2014; 60:50-57. [PMID: 24211390 DOI: 10.1016/j.jinsphys.2013.10.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2013] [Revised: 10/18/2013] [Accepted: 10/23/2013] [Indexed: 06/02/2023]
Abstract
Bruchid beetles infest various seeds. The seed coat is the first protective barrier against bruchid infestation. Although non-host seed coats often impair the oviposition, eclosion and survival of the bruchid Callosobruchus maculatus larvae, morphological and biochemical aspects of this phenomenon remain unclear. Here we show that Phaseolus vulgaris (non-host) seed coat reduced C. maculatus female oviposition about 48%, increased 83% the seed penetration time, reduced larval mass and survival about 62 % and 40 % respectively. Interestingly, we found no visible effect on the major events of insect embryogenesis, namely the formation of the cellular blastoderm, germ band extension/retraction, embryo segmentation, appendage formation and dorsal closure. Larvae fed on P. vulgaris seed coat have greater FITC fluorescence signal in the midgut than in the feces, as opposed to what is observed in control larvae fed on Vigna unguiculata. Cysteine protease, α-amylase and α-glucosidase activities were reduced in larvae fed on P. vulgaris natural seed coat. Taken together, our results suggest that although P. vulgaris seed coat does not interfere with C. maculatus embryonic development, food digestion was clearly compromised, impacting larval fitness (e.g. body mass and survivability).
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Affiliation(s)
- Leonardo Figueira Reis de Sá
- Laboratório de Química e Função de Proteínas e Peptídeos, Centro de Biociências e Biotecnologia - CBB, Universidade Estadual do Norte Fluminense Darcy Ribeiro - UENF, Campos dos Goytacazes-RJ, Brazil
| | - Tierry Torres Wermelinger
- Laboratório de Química e Função de Proteínas e Peptídeos, Centro de Biociências e Biotecnologia - CBB, Universidade Estadual do Norte Fluminense Darcy Ribeiro - UENF, Campos dos Goytacazes-RJ, Brazil
| | - Elane da Silva Ribeiro
- Laboratório de Química e Função de Proteínas e Peptídeos, Centro de Biociências e Biotecnologia - CBB, Universidade Estadual do Norte Fluminense Darcy Ribeiro - UENF, Campos dos Goytacazes-RJ, Brazil
| | - Geraldo de Amaral Gravina
- Laboratório de Experimentação Agrícola - LEAG, Centro de Ciências e Tecnologias Agropecuárias - CCTA, Universidade Estadual do Norte Fluminense Darcy Ribeiro - UENF, Campos dos Goytacazes-RJ, Brazil
| | - Kátia Valevski Sales Fernandes
- Laboratório de Química e Função de Proteínas e Peptídeos, Centro de Biociências e Biotecnologia - CBB, Universidade Estadual do Norte Fluminense Darcy Ribeiro - UENF, Campos dos Goytacazes-RJ, Brazil
| | - José Xavier-Filho
- Laboratório de Química e Função de Proteínas e Peptídeos, Centro de Biociências e Biotecnologia - CBB, Universidade Estadual do Norte Fluminense Darcy Ribeiro - UENF, Campos dos Goytacazes-RJ, Brazil
| | - Thiago Motta Venancio
- Laboratório de Química e Função de Proteínas e Peptídeos, Centro de Biociências e Biotecnologia - CBB, Universidade Estadual do Norte Fluminense Darcy Ribeiro - UENF, Campos dos Goytacazes-RJ, Brazil
| | - Gustavo Lazzaro Rezende
- Laboratório de Química e Função de Proteínas e Peptídeos, Centro de Biociências e Biotecnologia - CBB, Universidade Estadual do Norte Fluminense Darcy Ribeiro - UENF, Campos dos Goytacazes-RJ, Brazil.
| | - Antonia Elenir Amancio Oliveira
- Laboratório de Química e Função de Proteínas e Peptídeos, Centro de Biociências e Biotecnologia - CBB, Universidade Estadual do Norte Fluminense Darcy Ribeiro - UENF, Campos dos Goytacazes-RJ, Brazil.
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27
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Klubicová K, Danchenko M, Skultety L, Berezhna VV, Rashydov NM, Hajduch M. Radioactive Chernobyl environment has produced high-oil flax seeds that show proteome alterations related to carbon metabolism during seed development. J Proteome Res 2013; 12:4799-806. [PMID: 24111740 DOI: 10.1021/pr400528m] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Starting in 2007, we have grown soybean (Glycine max [L.] Merr. variety Soniachna) and flax (Linum usitatissimum, L. variety Kyivskyi) in the radio-contaminated Chernobyl area and analyzed the seed proteomes. In the second-generation flax seeds, we detected a 12% increase in oil content. To characterize the bases for this increase, seed development has been studied. Flax seeds were harvested in biological triplicate at 2, 4, and 6 weeks after flowering and at maturity from plants grown in nonradioactive and radio-contaminated plots in the Chernobyl area for two generations. Quantitative proteomic analyses based on 2-D gel electrophoresis (2-DE) allowed us to establish developmental profiles for 199 2-DE spots in both plots, out of which 79 were reliably identified by tandem mass spectrometry. The data suggest a statistically significant increased abundance of proteins associated with pyruvate biosynthesis via cytoplasmic glycolysis, L-malate decarboxylation, isocitrate dehydrogenation, and ethanol oxidation to acetaldehyde in early stages of seed development. This was followed by statistically significant increased abundance of ketoacyl-[acylcarrier protein] synthase I related to condensation of malonyl-ACP with elongating fatty acid chains. On the basis of these and previous data, we propose a preliminary model for plant adaptation to growth in a radio-contaminated environment. One aspect of the model suggests that changes in carbon assimilation and fatty acid biosynthesis are an integral part of plant adaptation.
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Affiliation(s)
- Katarína Klubicová
- Institute of Plant Genetics and Biotechnology, Slovak Academy of Sciences , Akademicka 2, P.O. Box 39A, Nitra 95007, Slovakia
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28
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Duan XH, Jiang R, Wen YJ, Bin JH. Some 2S albumin from peanut seeds exhibits inhibitory activity against Aspergillus flavus. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2013; 66:84-90. [PMID: 23500710 DOI: 10.1016/j.plaphy.2013.01.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2012] [Accepted: 01/25/2013] [Indexed: 06/01/2023]
Abstract
A crude 2S albumin fraction was separated from peanut (Arachis hypogaea L.) cotyledons. Untreated 2S albumin had little inhibitory activity against trypsin, spore germination, or hyphal growth of Aspergillus flavus. However, following treatment of 2S albumin with SDS, increased inhibitory activity was demonstrated. We further purified 2S albumin using Sephadex G-100 and DEAE cellulose (DE-32) chromatography. HPLC analysis showed that the partially pure 2S albumin consisted of two polypeptides, whereas SDS-PAGE analyzes exhibited six polypeptides. One of the polypeptides, 2S-1, was found to contain the same molecular weight and enzymatic properties as the peanut protease inhibitor (PI); however, the N-terminal amino acid sequence of 2S-1 differed from that of PI. An NCBI database search revealed that the 2S-1 polypeptide is homologous to the pathogenesis-related proteins from soybean, cowpea, chickpea, and Lupinus luteus. We hypothesize that the 2S-1 polypeptide might represent a novel antifungal protein.
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Affiliation(s)
- Xiao Hua Duan
- College of Life Sciences, South China Normal University, Guangdong Key Laboratory of Biotechnology for Plant Development, Guangzhou 510631, PR China
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29
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30
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Soares TS, Soares Torquato RJ, Alves Lemos FJ, Tanaka AS. Selective inhibitors of digestive enzymes from Aedes aegypti larvae identified by phage display. INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY 2013; 43:9-16. [PMID: 23142191 DOI: 10.1016/j.ibmb.2012.10.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2012] [Revised: 10/18/2012] [Accepted: 10/23/2012] [Indexed: 06/01/2023]
Abstract
Dengue is a serious disease transmitted by the mosquito Aedes aegypti during blood meal feeding. It is estimated that the dengue virus is transmitted to millions of individuals each year in tropical and subtropical areas. Dengue control strategies have been based on controlling the vector, Ae. aegypti, using insecticide, but the emergence of resistance poses new challenges. The aim of this study was the identification of specific protease inhibitors of the digestive enzymes from Ae. aegypti larvae, which may serve as a prospective alternative biocontrol method. High affinity protein inhibitors were selected by all of the digestive serine proteases of the 4th instar larval midgut, and the specificity of these inhibitors was characterized. These inhibitors were obtained from a phage library displaying variants of HiTI, a trypsin inhibitor from Haematobia irritans, that are mutated in the reactive loop (P1-P4'). Based on the selected amino acid sequence pattern, seven HiTI inhibitor variants were cloned, expressed and purified. The results indicate that the HiTI variants named T6 (RGGAV) and T128 (WNEGL) were selected by larval trypsin-like (IC(50) of 1.1 nM) and chymotrypsin-like enzymes (IC(50) of 11.6 nM), respectively. The variants T23 (LLGGL) and T149 (GGVWR) inhibited both larval chymotrypsin-like (IC(50) of 4.2 nM and 29.0 nM, respectively) and elastase-like enzymes (IC(50) of 1.2 nM for both). Specific inhibitors were successfully obtained for the digestive enzymes of Ae. aegypti larvae by phage display. Our data also strongly suggest the presence of elastase-like enzymes in Ae. aegypti larvae. The HiTI variants T6 and T23 are good candidates for the development as a larvicide to control the vector.
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Affiliation(s)
- Tatiane Sanches Soares
- Departamento de Bioquímica, Escola Paulista de Medicina, Universidade Federal de São Paulo, Rua 3 de Maio 100, 04044-020 São Paulo, SP, Brazil.
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31
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Wang WQ, Møller IM, Song SQ. Proteomic analysis of embryonic axis of Pisum sativum seeds during germination and identification of proteins associated with loss of desiccation tolerance. J Proteomics 2012; 77:68-86. [PMID: 22796356 DOI: 10.1016/j.jprot.2012.07.005] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2012] [Revised: 06/20/2012] [Accepted: 07/02/2012] [Indexed: 12/26/2022]
Abstract
Seed germination is an important stage in life cycle of higher plants. The germination processes and its associated loss of desiccation tolerance, however, are still poorly understood. In present study, pea seeds were used to study changes in embryonic axis proteome during germination by 2-DE and mass spectrometry. We identified a total of 139 protein spots showing a significant (>2-fold) change during germination. The results show that seed germination is not only the activation of a series of metabolic processes, but also involves reorganization of cellular structure and activation of protective systems. To uncouple the physiological processes of germination and its associated loss of desiccation tolerance, we used the fact that pea seeds have different desiccation tolerance when imbibed in water, CaCl(2) and methylviologen at the same germination stage. We compared the proteome amongst these seeds to identify the candidate proteins associated with the loss of desiccation tolerance and found a total of seven proteins - tubulin alpha-1 chain, seed biotin-containing protein SBP65, P54 protein, vicilin, vicilin-like antimicrobial peptides 2-3, convicilin and TCP-1/cpn60 chaperonin family protein. The metabolic function of these proteins indicates that seed desiccation tolerance is related to pathogen defense, protein conformation conservation and cell structure stabilization.
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Affiliation(s)
- Wei-Qing Wang
- Institute of Botany, Chinese Academy of Sciences, 20 Nanxincun, Xiangshan, Beijing 100093, China
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Ialicicco M, Viscosi V, Arena S, Scaloni A, Trupiano D, Rocco M, Chiatante D, Scippa GS. Lens culinaris Medik. seed proteome: analysis to identify landrace markers. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2012; 197:1-9. [PMID: 23116666 DOI: 10.1016/j.plantsci.2012.08.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2012] [Revised: 08/06/2012] [Accepted: 08/17/2012] [Indexed: 05/19/2023]
Abstract
Unlike modern cultivars selected for their growth performances in specific environmental conditions, local landraces have a high genetic variability that is an important resource for plant breeding. Consequent to their high adaptation to different environmental conditions, these landraces may have evolved adaptive gene complexes To promote the survival of endangered lentil landraces, we previously investigated the genetic relationship between two ancient landraces cultivated in the Molise region (Capracotta and Conca Casale, south-central Italy) and widely spread commercial varieties using an integrated approach consisting of morphological, DNA and protein characterization. In the present study, we used a proteomic approach to compare the mature seed proteomes of the Capracotta and Conca Casale lentil landraces. Multivariate analysis of 145 differentially expressed protein spots demonstrated that 52 proteins are required to discriminate among the two landraces. Therefore, these 52 proteins can be considered "landrace markers". The results of this study show that the combination of proteomics and multivariate analysis can be used to identify physiological and/or environmental markers, and is thus a powerful tool that complements the analysis of biodiversity in plant ecotypes.
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Affiliation(s)
- Manuela Ialicicco
- Dipartimento di Bioscienze e Territorio, Università del Molise, 86090 Pesche (Isernia), Italy
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Klubicová K, Danchenko M, Skultety L, Berezhna VV, Uvackova L, Rashydov NM, Hajduch M. Soybeans grown in the Chernobyl area produce fertile seeds that have increased heavy metal resistance and modified carbon metabolism. PLoS One 2012; 7:e48169. [PMID: 23110204 PMCID: PMC3482187 DOI: 10.1371/journal.pone.0048169] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2012] [Accepted: 09/21/2012] [Indexed: 11/19/2022] Open
Abstract
Plants grow and reproduce in the radioactive Chernobyl area, however there has been no comprehensive characterization of these activities. Herein we report that life in this radioactive environment has led to alteration of the developing soybean seed proteome in a specific way that resulted in the production of fertile seeds with low levels of oil and β-conglycinin seed storage proteins. Soybean seeds were harvested at four, five, and six weeks after flowering, and at maturity from plants grown in either non-radioactive or radioactive plots in the Chernobyl area. The abundance of 211 proteins was determined. The results confirmed previous data indicating that alterations in the proteome include adaptation to heavy metal stress and mobilization of seed storage proteins. The results also suggest that there have been adjustments to carbon metabolism in the cytoplasm and plastids, increased activity of the tricarboxylic acid cycle, and decreased condensation of malonyl-acyl carrier protein during fatty acid biosynthesis.
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Affiliation(s)
- Katarína Klubicová
- Department of Reproduction and Developmental Biology, Institute of Plant Genetics and Biotechnology, Slovak Academy of Sciences, Nitra, Slovakia
| | - Maksym Danchenko
- Department of Reproduction and Developmental Biology, Institute of Plant Genetics and Biotechnology, Slovak Academy of Sciences, Nitra, Slovakia
- Department of Biophysics and Radiobiology, Institute of Cell Biology and Genetic Engineering, Kyiv, Ukraine
| | - Ludovit Skultety
- Institute of Virology, Slovak Academy of Sciences, Bratislava, Slovakia
- Center for Molecular Medicine, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Valentyna V. Berezhna
- Department of Biophysics and Radiobiology, Institute of Cell Biology and Genetic Engineering, Kyiv, Ukraine
| | - Lubica Uvackova
- Department of Reproduction and Developmental Biology, Institute of Plant Genetics and Biotechnology, Slovak Academy of Sciences, Nitra, Slovakia
| | - Namik M. Rashydov
- Department of Biophysics and Radiobiology, Institute of Cell Biology and Genetic Engineering, Kyiv, Ukraine
| | - Martin Hajduch
- Department of Reproduction and Developmental Biology, Institute of Plant Genetics and Biotechnology, Slovak Academy of Sciences, Nitra, Slovakia
- Institute of Chemistry, Centre of Excellence for White-Green Biotechnology, Slovak Academy of Sciences, Nitra, Slovak Republic
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Moura RDM, Aragão KS, de Melo AA, Carneiro RF, Osório CBH, Luz PB, de Queiroz AFS, Dos Santos EA, de Alencar NMN, Cavada BS. Holothuria grisea agglutinin (HGA): the first invertebrate lectin with anti-inflammatory effects. Fundam Clin Pharmacol 2012; 27:656-68. [PMID: 22943744 DOI: 10.1111/j.1472-8206.2012.01073.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2012] [Revised: 05/30/2012] [Accepted: 06/22/2012] [Indexed: 12/16/2022]
Abstract
Holothuria grisea agglutinin (HGA) is a dimeric lectin of molecular mass 228 kDa by gel filtration with monomers of 105 kDa by SDS-PAGE. The lectin is highly thermostable as it retains full activity for 1 h at 70 °C. Unlike other lectins purified from marine invertebrates, the hemagglutination activity of HGA does not require any divalent metal ions. The affinity analysis of HGA showed that only mucin was able to inhibit the hemagglutinating activity. HGA administered intravenously was tested in classical models of nociception and inflammation. HGA was able to inhibit neutrophil migration into the peritoneal cavity induced by carrageenan. This inhibitory effect was 68% at a dose of 1 mg/kg. In acetic acid-induced writhing tests, a significant antinociceptive effect was observed by treatment with HGA (0.1; 1 or 10 mg/kg) reducing constrictions by 27, 90 and 84%, respectively. In formalin tests, HGA at a dose of 10 mg/kg showed antinociceptive effect only in the inflammatory phase (phase 2). Nevertheless, in hot-plate tests, HGA did not show any nociceptive effect. In rota-rod and open-field tests, HGA did not alter the animals' behavior. The treatment with HGA 10 mg/kg presented diminished myeloperoxidase activity activity (81.6% inhibition) and raised the circulating levels of NO by 50.4% when compared with the carrageenan group. HGA has demonstrated the ability to modulate the inflammatory response in models of inflammation in vivo. HGA is the first marine invertebrate lectin that showed an anti-inflammatory effect. This finding opens a new perspective on the potential of lectins from the marine environment.
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Affiliation(s)
- Raniere da M Moura
- Department of Biochemistry and Molecular Biology, Federal University of Ceara, Campus do Pici, s/n, Bloco 907, Fortaleza, CE, 60451-970, Brazil
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Morran S, Eini O, Pyvovarenko T, Parent B, Singh R, Ismagul A, Eliby S, Shirley N, Langridge P, Lopato S. Improvement of stress tolerance of wheat and barley by modulation of expression of DREB/CBF factors. PLANT BIOTECHNOLOGY JOURNAL 2011; 9:230-49. [PMID: 20642740 DOI: 10.1111/j.1467-7652.2010.00547.x] [Citation(s) in RCA: 232] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Transcription factors have been shown to control the activity of multiple stress response genes in a coordinated manner and therefore represent attractive targets for application in molecular plant breeding. We investigated the possibility of modulating the transcriptional regulation of drought and cold responses in the agriculturally important species, wheat and barley, with a view to increase drought and frost tolerance. Transgenic wheat and barley plants were generated showing constitutive (double 35S) and drought-inducible (maize Rab17) expression of the TaDREB2 and TaDREB3 transcription factors isolated from wheat grain. Transgenic populations with constitutive over-expression showed slower growth, delayed flowering and lower grain yields relative to the nontransgenic controls. However, both the TaDREB2 and TaDREB3 transgenic plants showed improved survival under severe drought conditions relative to nontransgenic controls. There were two components to the drought tolerance: real (activation of drought-stress-inducible genes) and 'seeming' (consumption of less water as a result of smaller size and/or slower growth of transgenics compared to controls). The undesired changes in plant development associated with the 'seeming' component of tolerance could be alleviated by using a drought-inducible promoter. In addition to drought tolerance, both TaDREB2 and TaDREB3 transgenic plants with constitutive over-expression of the transgene showed a significant improvement in frost tolerance. The increased expression of TaDREB2 and TaDREB3 lead to elevated expression in the transgenics of 10 other CBF/DREB genes and a large number of stress responsive LEA/COR/DHN genes known to be responsible for the protection of cell from damage and desiccation under stress.
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Affiliation(s)
- Sarah Morran
- Australian Centre for Plant Functional Genomics, University of Adelaide, Urrbrae, Adelaide, SA, Australia
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Genetic and chemical analyses of six cowpea and two Phaseolus bean species differing in resistance to weevil pest. ACTA ACUST UNITED AC 2010. [DOI: 10.1007/s12892-010-0004-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Barbosa AEAD, Albuquerque EVS, Silva MCM, Souza DSL, Oliveira-Neto OB, Valencia A, Rocha TL, Grossi-de-Sa MF. Alpha-amylase inhibitor-1 gene from Phaseolus vulgaris expressed in Coffea arabica plants inhibits alpha-amylases from the coffee berry borer pest. BMC Biotechnol 2010; 10:44. [PMID: 20565807 PMCID: PMC2914071 DOI: 10.1186/1472-6750-10-44] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2009] [Accepted: 06/17/2010] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Coffee is an important crop and is crucial to the economy of many developing countries, generating around US$70 billion per year. There are 115 species in the Coffea genus, but only two, C. arabica and C. canephora, are commercially cultivated. Coffee plants are attacked by many pathogens and insect-pests, which affect not only the production of coffee but also its grain quality, reducing the commercial value of the product. The main insect-pest, the coffee berry borer (Hypotheneumus hampei), is responsible for worldwide annual losses of around US$500 million. The coffee berry borer exclusively damages the coffee berries, and it is mainly controlled by organochlorine insecticides that are both toxic and carcinogenic. Unfortunately, natural resistance in the genus Coffea to H. hampei has not been documented. To overcome these problems, biotechnological strategies can be used to introduce an alpha-amylase inhibitor gene (alpha-AI1), which confers resistance against the coffee berry borer insect-pest, into C. arabica plants. RESULTS We transformed C. arabica with the alpha-amylase inhibitor-1 gene (alpha-AI1) from the common bean, Phaseolus vulgaris, under control of the seed-specific phytohemagglutinin promoter (PHA-L). The presence of the alpha-AI1 gene in six regenerated transgenic T1 coffee plants was identified by PCR and Southern blotting. Immunoblotting and ELISA experiments using antibodies against alpha-AI1 inhibitor showed a maximum alpha-AI1 concentration of 0.29% in crude seed extracts. Inhibitory in vitro assays of the alpha-AI1 protein against H. hampei alpha-amylases in transgenic seed extracts showed up to 88% inhibition of enzyme activity. CONCLUSIONS This is the first report showing the production of transgenic coffee plants with the biotechnological potential to control the coffee berry borer, the most important insect-pest of crop coffee.
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Molina D, Zamora H, Blanco-Labra A. An inhibitor from Lupinus bogotensis seeds effective against aspartic proteases from Hypothenemus hampei. PHYTOCHEMISTRY 2010; 71:923-929. [PMID: 20347105 DOI: 10.1016/j.phytochem.2010.03.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2009] [Revised: 11/23/2009] [Accepted: 03/03/2010] [Indexed: 05/29/2023]
Abstract
The coffee berry borer, Hypothenemus hampei (Ferrari), is one of the most devastating coffee pests (Coffea arabica L.) worldwide. Digestion in the midgut of H. hampei is facilitated by aspartic proteases. This is the first report of an aspartic protease inhibitor from Lupinus bogotensis. The L. bogotensis aspartic protease inhibitor (LbAPI) exhibited a molecular mass of 12.84kDa, as determined by MALDI-TOF, and consists of a single polypeptide chain with an isoelectric point of 4.5. In thermal activity experiments, stability was retained at pH 2.5 after heating the protein at 70 degrees C for 30 min, but was unstable at 100 degrees C. The protein was also stable over a broad range of pH, from 2 to 11, at 30 degrees C. In in vitro assays, LbAPI was highly effective against aspartic proteases from H. hampei guts with a half maximal inhibitory concentration (IC(50)) of 2.9 microg. LbAPI inhibits pepsin in a stoichiometric ratio of 1:1. LbAPI inhibition of pepsin was competitive, with a K(i) of 3.1 microM, using hemoglobin as substrate. Its amino-terminal sequence had 76% homology with the seed storage proteins vicilin and beta-conglutin. The homology of LbAPI to vicilins from Lupinus albus L. suggests that they may also serve as storage proteins in the seed. LbAPI could be a promising tool to make genetically modified coffee with resistance to H. hampei.
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Affiliation(s)
- Diana Molina
- National Coffee Research Center (Cenicafé), Plant Breeding Department, Chinchiná, Caldas, Colombia.
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Yezdani E, Sendi JJ, Zibaee A, Ghadamyari M. Enzymatic properties of alpha-amylase in the midgut and the salivary glands of mulberry moth, Glyphodes pyloalis Walker (Lepidoptera: Pyralidae). C R Biol 2010; 333:17-22. [PMID: 20176331 DOI: 10.1016/j.crvi.2009.11.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2009] [Revised: 11/01/2009] [Accepted: 11/14/2009] [Indexed: 10/19/2022]
Abstract
The pyralid moth, Glyphode pyloalis Walker, is an important pest of the mulberry. Amylases are the hydrolytic enzymes that catalyze the hydrolysis of the alpha-D-(1,4)-glucan linkage in glycogen and other related carbohydrates. Laboratory-reared fifth stadium larvae were randomly selected; the midgut (MG) and the salivary glands (SG) were removed by dissection under a dissecting microscope and alpha-amylase activity was assayed using the dinitrosalicylic acid procedure. The activity of alpha-amylase in the MG and the SG were 0.011 and 0.0018 micromol/min, respectively. The optimal pH and temperature for alpha-amylase were 9 for MG at 37-40 degrees C and 10 for SG at 37 degrees C respectively. Various concentrations of compounds (NaCl, KCl, MgCl(2), Urea, EDTA, SDS and CaCl(2)) had differential effects on the enzyme activity. Plant amylase inhibitors may play an important role against insect pests. Hence, the characterization of digestive enzymes and the examination of their inhibitors may be a useful tool in future management of this important mulberry pest.
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Affiliation(s)
- Elham Yezdani
- Department of Plant Protection, University of Guilan, Rast Ghazvin Road, PO Box. 41635, 41635, Rasht, Iran
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Scippa GS, Rocco M, Ialicicco M, Trupiano D, Viscosi V, Di Michele M, Arena S, Chiatante D, Scaloni A. The proteome of lentil (Lens culinaris Medik.) seeds: Discriminating between landraces. Electrophoresis 2010; 31:497-506. [DOI: 10.1002/elps.200900459] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Dos Santos IS, Carvalho ADO, de Souza-Filho GA, do Nascimento VV, Machado OLT, Gomes VM. Purification of a defensin isolated from Vigna unguiculata seeds, its functional expression in Escherichia coli, and assessment of its insect alpha-amylase inhibitory activity. Protein Expr Purif 2009; 71:8-15. [PMID: 19948221 DOI: 10.1016/j.pep.2009.11.008] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2009] [Revised: 11/17/2009] [Accepted: 11/23/2009] [Indexed: 10/20/2022]
Abstract
Plant defensins make up a family of cationic antimicrobial peptides with a characteristic three-dimensional folding pattern stabilized by four disulfide bridges. The aim of this work was the purification and functional expression of a defensin from cowpea seeds and the assessment of its alpha-amylase inhibitory activity. The cDNA encoding the cowpea defensin was cloned into the pET-32 EK/LIC vector, and the resulting construct was used to transform Escherichia coli cells. The recombinant peptide was purified via affinity chromatography on a Ni Sepharose column and by reverse-phase chromatography on a C2/C18 column using HPLC. N-terminal amino acid sequencing revealed that the recombinant peptide had a similar sequence to that of the defensin isolated from seeds. The natural and recombinant defensins were submitted to the alpha-amylase inhibition assay. The cowpea seed defensin was found to inhibit alpha-amylases from the weevils Callosobruchus maculatus and Zabrotes subfasciatus. alpha-Amylase inhibition assays also showed that the recombinant defensin inhibited alpha-amylase from the weevil C. maculatus. The cowpea seed defensin and its recombinant form were unable to inhibit mammalian alpha-amylases. The three-dimensional structure of the recombinant defensin was modeled, and the resulting structure was found to be similar to those of other plant defensins.
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Affiliation(s)
- Izabela S Dos Santos
- Universidade Estadual do Norte Fluminense, Laboratório de Fisiologia e Bioquímica de Microrganismos, Campos dos Goytacazes 28013-602, RJ, Brazil
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42
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Luo M, Brown RL, Chen ZY, Cleveland TE. Host genes involved in the interaction betweenAspergillus flavusand maize. TOXIN REV 2009. [DOI: 10.1080/15569540903089197] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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43
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Danchenko M, Skultety L, Rashydov NM, Berezhna VV, Mátel L, Salaj T, Pret'ová A, Hajduch M. Proteomic analysis of mature soybean seeds from the Chernobyl area suggests plant adaptation to the contaminated environment. J Proteome Res 2009; 8:2915-22. [PMID: 19320472 DOI: 10.1021/pr900034u] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The explosion in one of the four reactors of the Chernobyl Nuclear Power Plant (CNPP, Chernobyl) caused the worst nuclear environmental disaster ever seen. Currently, 23 years after the accident, the soil in the close vicinity of CNPP is still significantly contaminated with long-living radioisotopes, such as (137)Cs. Despite this contamination, the plants growing in Chernobyl area were able to adapt to the radioactivity, and survive. The aim of this study was to investigate plant adaptation mechanisms toward permanently increased level of radiation using a quantitative high-throughput proteomics approach. Soybeans of a local variety (Soniachna) were sown in contaminated and control fields in the Chernobyl region. Mature seeds were harvested and the extracted proteins were subjected to two-dimensional gel electrophoresis (2-DE). In total, 9.2% of 698 quantified protein spots on 2-D gel were found to be differentially expressed with a p-value = 0.05. All differentially expressed spots were excised from the 2-D gels and analyzed by tandem mass spectrometry. Identified differentially expressed proteins were categorized into six main metabolic classes. Most abundant functional classes were associated with protein destination and storage followed by disease and defense. On the basis of the identity of these proteins, a working model for plant adaptation toward radio-contaminated Chernobyl soil conditions was proposed. Our results suggest that adaptation toward heavy metal stress, protection against radiation damage, and mobilization of seed storage proteins are involved in plant adaptation mechanism to radioactivity in the Chernobyl region.
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Affiliation(s)
- Maksym Danchenko
- Department of Reproduction and Developmental Biology, Institute of Plant Genetics and Biotechnology, Slovak Academy of Sciences, Nitra, Slovakia
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Ramos VDS, Freire MGM, Parra JRP, Macedo MLR. Regulatory effects of an inhibitor from Plathymenia foliolosa seeds on the larval development of Anagasta kuehniella (Lepidoptera). Comp Biochem Physiol A Mol Integr Physiol 2009; 152:255-61. [PMID: 19007900 DOI: 10.1016/j.cbpa.2008.10.013] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2007] [Revised: 10/15/2008] [Accepted: 10/15/2008] [Indexed: 11/15/2022]
Affiliation(s)
- Vanessa da Silveira Ramos
- Departamento de Bioquímica, Instituto de Biologia, Universidade Estadual de Campinas, Campinas, SP, Brazil
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Amorim TML, Macedo LLP, Uchoa AF, Oliveira AS, Pitanga JCM, Macedo FP, Santos EA, de Sales MP. Proteolytic digestive enzymes and peritrophic membranes during the development of Plodia interpunctella (Lepidoptera: Piralidae): targets for the action of soybean trypsin inhibitor (SBTI) and chitin-binding vicilin (EvV). JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2008; 56:7738-45. [PMID: 18693741 DOI: 10.1021/jf801224d] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The digestive system of P. interpunctella was characterized during its larval development to determine possible targets for the action of proteinaceous enzyme inhibitors and chitin-binding proteins. High proteolytic activities using azocasein at pH 9.5 as substrate were found. These specific enzymatic activities (AU/mg protein) showed an increase in the homogenate of third instar larvae, and when analyzed by individual larvae (AU/gut), the increase was in sixth instar larvae. Zymograms showed two bands corresponding to those enzymatic activities, which were inhibited by TLCK and SBTI, indicating that the larvae mainly used serine proteinases at pH 9.5 in their digestive process. The presence of a peritrophic membrane in the larvae was confirmed by chemical testing and light microscopy. In a bioassay, P. interpunctella was not susceptible to the soybean trypsin inhibitor, which did not affect larval mass and mortality, likely due to the weak association with its target digestive enzyme. EvV (Erythrina velutina vicilin), when added to the diet, affected mortality (LD50 0.23%) and larval mass (ED50 0.27%). This effect was associated with EvV-binding to the peritrophic membrane, as seen by immunolocalization. EvV was susceptible to gut enzymes and after the digestion process, released an immunoreactive fragment that was bound to the peritrophic matrix, which probably was responsible for the action of EvV.
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Affiliation(s)
- Ticiana M L Amorim
- Chemistry and Bioactive Protein Function Laboratory, Department of Biochemistry, Bioscience Center, Federal University of Rio Grande do Norte, Natal, Brazil
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Wang JR, Wei YM, Yan ZH, Zheng YL. SNP and haplotype identification of the wheat monomeric α-amylase inhibitor genes. Genetica 2007; 134:277-85. [DOI: 10.1007/s10709-007-9235-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2006] [Accepted: 11/23/2007] [Indexed: 11/24/2022]
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Ferreira RB, Monteiro S, Freitas R, Santos CN, Chen Z, Batista LM, Duarte J, Borges A, Teixeira AR. The role of plant defence proteins in fungal pathogenesis. MOLECULAR PLANT PATHOLOGY 2007; 8:677-700. [PMID: 20507530 DOI: 10.1111/j.1364-3703.2007.00419.x] [Citation(s) in RCA: 96] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
SUMMARY It is becoming increasingly evident that a plant-pathogen interaction may be compared to an open warfare, whose major weapons are proteins synthesized by both organisms. These weapons were gradually developed in what must have been a multimillion-year evolutionary game of ping-pong. The outcome of each battle results in the establishment of resistance or pathogenesis. The plethora of resistance mechanisms exhibited by plants may be grouped into constitutive and inducible, and range from morphological to structural and chemical defences. Most of these mechanisms are defensive, exhibiting a passive role, but some are highly active against pathogens, using as major targets the fungal cell wall, the plasma membrane or intracellular targets. A considerable overlap exists between pathogenesis-related (PR) proteins and antifungal proteins. However, many of the now considered 17 families of PR proteins do not present any known role as antipathogen activity, whereas among the 13 classes of antifungal proteins, most are not PR proteins. Discovery of novel antifungal proteins and peptides continues at a rapid pace. In their long coevolution with plants, phytopathogens have evolved ways to avoid or circumvent the plant defence weaponry. These include protection of fungal structures from plant defence reactions, inhibition of elicitor-induced plant defence responses and suppression of plant defences. A detailed understanding of the molecular events that take place during a plant-pathogen interaction is an essential goal for disease control in the future.
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Affiliation(s)
- Ricardo B Ferreira
- Departamento de Botânica e Engenharia Biológica, Instituto Superior de Agronomia, Universidade Técnica de Lisboa, 1349-017 Lisboa, Portugal
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Zhang K, McKinlay C, Hocart CH, Djordjevic MA. The Medicago truncatula small protein proteome and peptidome. J Proteome Res 2007; 5:3355-67. [PMID: 17137337 DOI: 10.1021/pr060336t] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The small protein and native peptide component of plant tissues is a neglected area of proteomic studies. We have used fractionation techniques for denatured and nondenatured protein preparations combined with 2-D LC tandem mass spectrometry to examine the sequences of small proteins and peptides in four tissues of the model legume, Medicago truncatula: the root tip and root of germinating seedlings, nitrogen fixing nodules, and young leaves. The isolation and fractionation strategies successfully enriched the small protein and native peptide content of the samples. Eighty-one small M. truncatula proteins and native peptides were identified. Most samples were dominated by ribosomal and histone proteins, and leaf samples possessed photosynthesis-related proteins. Secreted proteins such as lipid transfer proteins were common to several tissues. Twenty-four hours after germination, the roots and root tip tissues possessed several "seed-specific" and late-embryogenesis proteins. We conclude that these proteins are present in cells prior to germination and that they are subsequently used as a nutritional source for the young tissues. Native UV absorbing peptides were detected in very low molecular weight fractions and sequenced. Each peptide shared C-terminal residues and showed homology to the seed storage protein legumin. The strategies used here would be suitable for combining bioassays and mass spectrometry to identify bioactive peptides in the M. truncatula peptidome.
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Affiliation(s)
- Kerong Zhang
- Australian Research Council Centre of Excellence for Integrative Legume Research, Genomic Interactions Group, Australian National University, Canberra, Australia
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49
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Vicilin-type globulins follow distinct patterns of degradation in different species of germinating legume seeds. Food Chem 2007. [DOI: 10.1016/j.foodchem.2006.05.023] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Wallowitz M, Peterson WR, Uratsu S, Comstock SS, Dandekar AM, Teuber SS. Jug r 4, a legumin group food allergen from walnut (Juglans regia Cv. Chandler). JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2006; 54:8369-75. [PMID: 17032053 DOI: 10.1021/jf061329s] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Allergy to walnut is the most frequently reported tree nut allergy in the United States. Walnut 2S albumin, a vicilin-like protein, and a lipid transfer protein allergen have previously been described. Our objective was to clone and express a cDNA encoding a legumin group protein, assess IgE-binding with sera from walnut allergic patients, and investigate cross-reactivity with selected nuts. Primers were used to obtain the cDNA by 5' and 3' rapid amplification of cDNA ends from walnut mRNA. The cDNA was subcloned into the pMAL-c2X vector and the recombinant fusion protein, named rJug r 4, was expressed in Escherichia coli. The obtained cDNA encoded a precursor protein with a predicted molecular weight of 58.1 kD, which showed significant sequence homology to hazelnut and cashew legumin allergens. Serum IgE from 21 of 37 (57%) patients bound the rJug r 4 fusion protein. In vitro cross-reactivity was demonstrated with hazelnut, cashew, and peanut protein extracts.
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Affiliation(s)
- Mikhael Wallowitz
- Department of Internal Medicine, Division of Rheumatology, Allergy and Clinical Immunology, University of California-Davis School of Medicine, Davis, CA, USA
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