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Dos Santos Nunes RG, de Amorim LC, Bezerra IC, da Silva AJ, Dos Santos CAL, Gubert P, de Menezesa IRA, Duarte AE, Barros LM, da Silveira Andrade-da-Costa BL, Dos Santos MV, Dos Santos Correia MT, da Rosa MM. Syagrus coronata fixed oil prevents rotenone-induced movement disorders and oxidative stress in Drosophila melanogaster. J Toxicol Environ Health A 2024; 87:497-515. [PMID: 38619158 DOI: 10.1080/15287394.2024.2338431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/16/2024]
Abstract
One prominent aspect of Parkinson's disease (PD) is the presence of elevated levels of free radicals, including reactive oxygen species (ROS). Syagrus coronata (S. coronata), a palm tree, exhibits antioxidant activity attributed to its phytochemical composition, containing fatty acids, polyphenols, and flavonoids. The aim of this investigation was to examine the potential neuroprotective effects of S. coronata fixed oil against rotenone-induced toxicity using Drosophila melanogaster. Young Drosophila specimens (3-4 d old) were exposed to a diet supplemented with rotenone (50 µM) for 7 d with and without the inclusion of S. coronata fixed oil (0.2 mg/g diet). Data demonstrated that rotenone exposure resulted in significant locomotor impairment and increased mortality rates in flies. Further, rotenone administration reduced total thiol levels but elevated lipid peroxidation, iron (Fe) levels, and nitric oxide (NO) levels while decreasing the reduced capacity of mitochondria. Concomitant administration of S. coronata exhibited a protective effect against rotenone, as evidenced by a return to control levels of Fe, NO, and total thiols, lowered lipid peroxidation levels, reversed locomotor impairment, and enhanced % cell viability. Molecular docking of the oil lipidic components with antioxidant enzymes showed strong binding affinity to superoxide dismutase (SOD) and glutathione peroxidase (GPX1) enzymes. Overall, treatment with S. coronata fixed oil was found to prevent rotenone-induced movement disorders and oxidative stress in Drosophila melanogaster.
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Affiliation(s)
| | | | | | - Artur José da Silva
- Keizo Asami Institute, iLIKA, Federal University of Pernambuco, Recife, Brazil
| | | | - Priscila Gubert
- Keizo Asami Institute, iLIKA, Federal University of Pernambuco, Recife, Brazil
| | | | - Antonia Eliene Duarte
- Postgraduate Program in Pure and Applied Chemistry, Federal University of Western of Bahia, Bahia, Brazil
| | - Luiz Marivando Barros
- Postgraduate Program in Pure and Applied Chemistry, Federal University of Western of Bahia, Bahia, Brazil
| | | | | | | | - Michelle Melgarejo da Rosa
- Department of Biochemistry, Federal University of Pernambuco, Recife, Brazil
- Laboratory of Immunomodulation and New Therapeutic Approaches (LINAT), Suely-Galdino Therapeutic Innovation Research Center (NUPIT-SG), Federal University of Pernambuco (UFPE), Recife, PE, Brazil
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Barros YVR, de Andrade AO, da Silva LPD, Pedroza LAL, Bezerra IC, Cavalcanti IDL, Nogueira MCDBL, Mousinho KC, Antoniolli AR, Alves LC, Lima Filho JLD, Moura AV, Rosini Silva ÁA, Porcari ADM, Gubert P. Bee Venom Toxic Effect on MDA-MB-231 Breast Cancer Cells and Caenorhabditis Elegans. Anticancer Agents Med Chem 2024; 24:ACAMC-EPUB-139209. [PMID: 38500290 DOI: 10.2174/0118715206291634240312062957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 02/15/2024] [Accepted: 02/22/2024] [Indexed: 03/20/2024]
Abstract
INTRODUCTION Bee venom has therapeutics and pharmacological properties. Further toxicological studies on animal models are necessary due to the severe allergic reactions caused by this product. METHOD Here, Caenorhabditis elegans was used as an in vivo toxicity model, while breast cancer cells were used to evaluate the pharmacological benefits. The bee venom utilized in this research was collected from Apis mellifera species found in Northeast Brazil. The cytotoxicity caused by bee venom was measured by MTT assay on MDA-MB-231 and J774 A.1 cells during 24 - 72 hours of exposure. C. elegans at the L4 larval stage were exposed for three hours to M9 buffer or bee venom. Survival, behavioral parameters, reproduction, DAF-16 transcription factor translocation, the expression of superoxide dismutase (SOD), and metabolomics were analyzed. Bee venom suppressed the growth of MDA-MB-231 cancer cells and exhibited cytotoxic effects on macrophages. Also, decreased C. elegans survival impacted its behaviors by decreasing C. elegans feeding behavior, movement, and reproduction. RESULTS Bee venom did not increase the expression of SOD-3, but it enhanced DAF-16 translocation from the cytoplasm to the nucleus. C. elegans metabolites differed after bee venom exposure, primarily related to aminoacyl- tRNA biosynthesis, glycine, serine and threonine metabolism, and sphingolipid and purine metabolic pathways. Our findings indicate that exposure to bee venom resulted in harmful effects on the cells and animal models examined. CONCLUSION Thus, due to its potential toxic effect and induction of allergic reactions, using bee venom as a therapeutic approach has been limited. The development of controlled-release drug strategies to improve this natural product's efficacy and safety should be intensified.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Luiz Carlos Alves
- Federal University of Pernambuco Keizo Asami Institute Recife Brazil
| | | | - Alexandre Varão Moura
- Universidade São Francisco Health Sciences Postgraduate Program Bragança Paulista Brazil
| | | | | | - Priscila Gubert
- Federal University of Pernambuco Keizo Asami Institute Recife Brazil
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Nunes de Andrade Medeiros SR, Conrado Bezerra I, José da Silva A, Leal Pedroza LA, Gomes Martins RM, Moniz AMH, Gonçalves Reis de Melo AC, Souza Paiva W, Gubert P, Alves de Melo Filho A. In Vitro and In Silico Antioxidant Activity and Molecular Characterization of Bauhinia ungulata L. Essential Oil. Chem Biodivers 2024; 21:e202301536. [PMID: 38090811 DOI: 10.1002/cbdv.202301536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Accepted: 12/10/2023] [Indexed: 01/23/2024]
Abstract
Bauhinia ungulata is an antioxidant medicinal plant that has been manipuled in Brazil to lower glycemic index as well is for alternative treatment for diabetes. Therefore, the present hearch has aimed to investigates the antioxidant effects of the essential oil of Bauhinia ungulata L. (EOBU) collected in Amazon region better specified in Boa Vista, Roraima, Brazil, located in the Amazon region. Gas chromatography had been used to characterize the components, and antioxidant assays such as DPPH, TAC, reducing power, Fe2+ chelation, and total phenols had also been performed. The major constituents had molecularly anchored with the human catalase (CAT) enzyme, and maltol has showed as a positive control. Among the 25 revealed components, the main ones have been α-bisabolol (27.2 %), β-Caryophyllene (12.5 %) and Epi-γ-eudesmol (13.6 %). The EOBU has comproved a TAC value of 618.79 mg of ascorbic acid equivalent, free radical scavenging capacity (DPPH) around 53.7 % and 65.27 %, Fe2+ chelation capacity of 161±6 and 126.7±39.6, for 0.1 mg.mL-1 and 0.5 mg.mL-1 , respectively. The power around the EOBU has appeared percentages equals to 28.66 %, 44.6 %, and 77.03 % in the concentrations tested. As well as, 96.5 % of total phenols. The compounds α-bisabolol (-5.7±0.4 Kcal.mol-1 ) and β-caryophyllene (-6.1±0.5 Kcal.mol-1 ) have showed good interaction with CAT compared to Maltol (-4.4±0.4 Kcal.mol-1 ). The present work has demonstrated that EOBU functions as a potent antioxidant, capable of scavenging free radicals and reducing oxidative stress damage.
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Affiliation(s)
- Sandra Regina Nunes de Andrade Medeiros
- Biodiversity and Biotechnology of the Legal Amazon, PPG Bionorte, Federal University of Roraima (UFRR), Boa Vista, RR, Brazil
- Keizo Asami Institute, Federal University of Pernambuco (UFPE), Recife, PE, Brazil
| | | | - Artur José da Silva
- Keizo Asami Institute, Federal University of Pernambuco (UFPE), Recife, PE, Brazil
| | | | - Regildo Max Gomes Martins
- Biotechnology Multi-institutional Program, PPGBIOTEC, Federal University of Amazonas (UFAM), Manaus, Amazonas, Brazil
| | - Ana Maria Henrique Moniz
- Biodiversity and Biotechnology of the Legal Amazon, PPG Bionorte, Federal University of Roraima (UFRR), Boa Vista, RR, Brazil
| | - Ana Cristina Gonçalves Reis de Melo
- Environmental Chemistry Laboratory, Center for Research and Graduate Studies in Science and Technology, Federal University of Roraima (UFRR), Boa Vista, RR, Brazil
| | - Weslley Souza Paiva
- Post-Graduate Program in Biochemistry and Molecular Biology, Federal University of Rio Grande do Norte, Natal, Brazil
| | - Priscila Gubert
- Keizo Asami Institute, Federal University of Pernambuco (UFPE), Recife, PE, Brazil
- Post-Graduate Program in Biology Applied in Health, Federal University of Pernambuco, Recife, PE, Brazil
| | - Antonio Alves de Melo Filho
- Biodiversity and Biotechnology of the Legal Amazon, PPG Bionorte, Federal University of Roraima (UFRR), Boa Vista, RR, Brazil
- Environmental Chemistry Laboratory, Center for Research and Graduate Studies in Science and Technology, Federal University of Roraima (UFRR), Boa Vista, RR, Brazil
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Gubert P, Gubert G, de Oliveira RC, Fernandes ICO, Bezerra IC, de Ramos B, de Lima MF, Rodrigues DT, da Cruz AFN, Pereira EC, Ávila DS, Mosca DH. Caenorhabditis elegans as a Prediction Platform for Nanotechnology-Based Strategies: Insights on Analytical Challenges. Toxics 2023; 11:239. [PMID: 36977004 PMCID: PMC10059662 DOI: 10.3390/toxics11030239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Revised: 02/22/2023] [Accepted: 02/24/2023] [Indexed: 06/18/2023]
Abstract
Nanotechnology-based strategies have played a pivotal role in innovative products in different technological fields, including medicine, agriculture, and engineering. The redesign of the nanometric scale has improved drug targeting and delivery, diagnosis, water treatment, and analytical methods. Although efficiency brings benefits, toxicity in organisms and the environment is a concern, particularly in light of global climate change and plastic disposal in the environment. Therefore, to measure such effects, alternative models enable the assessment of impacts on both functional properties and toxicity. Caenorhabditis elegans is a nematode model that poses valuable advantages such as transparency, sensibility in responding to exogenous compounds, fast response to perturbations besides the possibility to replicate human disease through transgenics. Herein, we discuss the applications of C. elegans to nanomaterial safety and efficacy evaluations from one health perspective. We also highlight the directions for developing appropriate techniques to safely adopt magnetic and organic nanoparticles, and carbon nanosystems. A description was given of the specifics of targeting and treatment, especially for health purposes. Finally, we discuss C. elegans potential for studying the impacts caused by nanopesticides and nanoplastics as emerging contaminants, pointing out gaps in environmental studies related to toxicity, analytical methods, and future directions.
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Affiliation(s)
- Priscila Gubert
- Keizo Asami Institute, iLIKA, Federal University of Pernambuco, Recife 50670-901, Brazil
- Graduate Program in Biology Applied to Health, PPGBAS, Federal University of Pernambuco, Recife 50670-901, Brazil
- Graduate Program in Pure and Applied Chemistry, POSQUIPA, Federal University of Western of Bahia, Bahia 47808-021, Brazil
| | - Greici Gubert
- Postdoctoral Program in Chemistry, Federal University of São Carlos, São Carlos 13565-905, Brazil
| | | | - Isabel Cristina Oliveira Fernandes
- Keizo Asami Institute, iLIKA, Federal University of Pernambuco, Recife 50670-901, Brazil
- Graduate Program in Biology Applied to Health, PPGBAS, Federal University of Pernambuco, Recife 50670-901, Brazil
| | | | - Bruna de Ramos
- Oceanography Department, Federal University of Pernambuco, Recife 50670-901, Brazil
| | - Milena Ferreira de Lima
- Keizo Asami Institute, iLIKA, Federal University of Pernambuco, Recife 50670-901, Brazil
- Graduate Program in Biology Applied to Health, PPGBAS, Federal University of Pernambuco, Recife 50670-901, Brazil
| | - Daniela Teixeira Rodrigues
- Graduate Program in Biological Sciences, Toxicological Biochemistry, Federal University of Santa Maria, Santa Maria 97105-900, Brazil
| | | | - Ernesto Chaves Pereira
- Postdoctoral Program in Chemistry, Federal University of São Carlos, São Carlos 13565-905, Brazil
| | - Daiana Silva Ávila
- Graduate Program in Biological Sciences, Toxicological Biochemistry, Federal University of Santa Maria, Santa Maria 97105-900, Brazil
- Graduate Program in Biochemistry, Federal University of Pampa (UNIPAMPA), Uruguaiana 97501-970, Brazil
| | - Dante Homero Mosca
- Postdoctoral Program in Physics, Federal University of Paraná, Curitiba 80060-000, Brazil
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Ribeiro SG, Ambrozevícius LP, Avila AC, Bezerra IC, Calegario RF, Fernandes JJ, Lima MF, de Mello RN, Rocha H, Zerbini FM. Distribution and genetic diversity of tomato-infecting begomoviruses in Brazil. Arch Virol 2003; 148:281-95. [PMID: 12556993 DOI: 10.1007/s00705-002-0917-0] [Citation(s) in RCA: 105] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Tomato-infecting begomoviruses have been reported throughout Brazil since the introduction of the B biotype of Bemisia tabaci. Here, we report a large scale survey on the distribution and genetic diversity of tomato-infecting begomoviruses. Tomato samples with typical begomovirus symptoms were collected in seven different states, comprising the major tomato growing areas of the country. Viruses were detected by polymerase chain reaction (PCR) using universal primers for the genus Begomovirus. PCR-amplified fragments were cloned and sequenced. Based on sequence comparisons and phylogenetic analyses, at least seven previously undescribed species of begomoviruses were found. Four of the new viruses were found exclusively in the Southeastern states, two exclusively in the Northeastern states, and one was found in both regions. Sequence comparisons reveal strong evidence of recombination among the Brazilian begomoviruses. Together, the results indicate the existence of a high degree of pre-existing genetic diversity among tomato-infecting begomoviruses in Brazil and suggest that these viruses have emerged after being transferred from natural hosts to tomatoes, due to the introduction into Brazil of a novel polyfagous biotype of the whitefly vector.
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Affiliation(s)
- S G Ribeiro
- EMBRAPA Recursos Genéticos e Biotecnologia, Parque Estação Biológica, Brasília, Brazil
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Abstract
In order to determine the diversity of the movement protein (NS(M)) among tospoviruses, the NSM genes of five distinct tospovirus species occurring in Brazil (Tomato chlorotic spot virus, Groundnut ring spot virus, Chrysanthemum stem necrosis virus, Zucchini lethal chlorosis virus and Iris yellow spot virus) were cloned, sequenced and compared with NS(M) sequences of other available tospoviruses. The 'D-motif', a conserved region present in the majority of '30K superfamily' virus movement proteins, is present in all NSM amino acid sequences available. In addition to the 'D-motif', a conserved phospholipase A2 motif was found. The NSM amino acid sequence comparisons among tospovirus species revealed several conserved regions located in the internal part of the protein and diverse domains mainly located in the amino-terminus. Prediction of secondary structure showed similar patterns among all NS(M) proteins analyzed. Considering the geographical prevalence and phylogenetic analysis of N and NS(M) proteins, tospoviruses were tentatively clustered in 'American' and 'Eurasian' groups. Both phylogenetic trees may reflect the natural evolution of tospovirus species within distinct ecological niches. The sequence information obtained in this work would facilitate functional analysis of NS(M) during the tospovirus infection process.
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Affiliation(s)
- M S Silva
- Departamento de Biologia Celular, Universidade de Brasília-UnB, DF, Brazil
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Bezerra IC, de O Resende R, Pozzer L, Nagata T, Kormelink R, De Avila AC. Increase of tospoviral diversity in Brazil with the identification of two new tospovirus species, one from chrysanthemum and one from zucchini. Phytopathology 1999; 89:823-830. [PMID: 18944712 DOI: 10.1094/phyto.1999.89.9.823] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
ABSTRACT During a survey conducted in several different regions of Brazil, two unique tospoviruses were isolated and characterized, one from chrysanthemum and the other from zucchini. The chrysanthemum virus displayed a broad host range, whereas the virus from zucchini was restricted mainly to the family Cucurbitaceae. Double-antibody sandwich-enzyme-linked immunosorbent assay and western immunoblot analyses demonstrated that both viruses were serologically distinct from all reported tospovirus species including the recently proposed peanut yellow spot virus and iris yellow spot virus (IYSV) species. The nucleotide sequences of the nucleocapsid (N) genes of both viruses contain 780 nucleotides encoding for deduced proteins of 260 amino acids. The N proteins of these two viruses displayed amino acid sequence similarities with the previously described tospovirus species ranging from 20 to 75%, but they were more closely related to each other (80%). Based on the biological and molecular features, these viruses are proposed as two new tospovirus species, designated chrysanthemum stem necrosis virus (CSNV) and zucchini lethal chlorosis virus (ZLCV). With the identification of CSNV and ZLCV, in addition to tomato spotted wilt virus, groundnut ring spot virus, tomato chlorotic spot virus, and IYSV, Brazil harbors the broadest spectrum of tospovirus species reported.
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Pozzer L, Bezerra IC, Kormelink R, Prins M, Peters D, Resende RDO, de Ávila AC. Characterization of a Tospovirus Isolate of Iris Yellow Spot Virus Associated with a Disease in Onion Fields in Brazil. Plant Dis 1999; 83:345-350. [PMID: 30845585 DOI: 10.1094/pdis.1999.83.4.345] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
A tospovirus from onion causing a disease known as "sapeca" by growers in Brazil was characterized. Symptoms on onion consisted of numerous eyelike spots on the leaves and flower stalks resulting in flower abortion. Nicotiana benthamiana and N. rustica were the only systemic hosts experimentally found. Double antibody sandwich enzyme-linked immunosorbent assay (DAS-ELISA) experiments demonstrated that this virus was serologically related to iris yellow spot virus (IYSV), a tospovirus recently described in the Netherlands. This virus, from onion, based on an amino acid sequence identity of 90.5% for the N gene protein, is regarded as a strain of IYSV and is designated IYSVBR This 10% divergence in the nucleocapsid protein may represent an adaptation of the virus to distinct ecological niches.
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Affiliation(s)
- L Pozzer
- Embrapa/Hortaliças, Km 09, Rodovia Brasília Anápolis, CEP: 70.359-970, Brasília, DF, Brazil
| | - I C Bezerra
- Embrapa/Hortaliças, Km 09, Rodovia Brasília Anápolis, CEP: 70.359-970, Brasília, DF, Brazil
| | - R Kormelink
- Wageningen Agricultural University, Laboratory of Virology, Binnenhaven 11, 6709 PD, Wageningen, The Netherlands
| | - M Prins
- Wageningen Agricultural University, Laboratory of Virology, Binnenhaven 11, 6709 PD, Wageningen, The Netherlands
| | - D Peters
- Wageningen Agricultural University, Laboratory of Virology, Binnenhaven 11, 6709 PD, Wageningen, The Netherlands
| | - R de O Resende
- Universidade de Brasília, Departamento de Biologia Celular, CEP: 70.919-970, Brasília, DF, Brazil
| | - A C de Ávila
- Embrapa/Hortaliças, Km 09, Rodovia Brasília Anápolis, CEP: 70.359-970, Brasília, DF, Brazil
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Ribeiro SG, de Ávila AC, Bezerra IC, Fernandes JJ, Faria JC, Lima MF, Gilbertson RL, Maciel-Zambolim E, Zerbini FM. Widespread Occurrence of Tomato Geminiviruses in Brazil, Associated with the New Biotype of the Whitefly Vector. Plant Dis 1998; 82:830. [PMID: 30856961 DOI: 10.1094/pdis.1998.82.7.830c] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Although tomato golden mosaic virus (TGMV) was reported in Brazil more than 20 years ago (3), tomato-infecting geminiviruses have not been of economic significance in the country until recently. However, a sharp increase in the incidence of geminivirus-like symptoms in tomatoes has been reported in several areas of Brazil since 1994. This has coincided with the appearance of the B biotype of Bemisia tabaci, which, as opposed to the A biotype, readily colonizes solanaceous plants (2). We have isolated geminiviruses from symptomatic tomato plants in the Federal District, in two different areas of the state of Minas Gerais, and in the state of Pernambuco. Tomato plants in these areas showed a variety of symptoms, including yellow mosaic, severe leaf distortion, down-cupping, and epinasty. Whitefly infestation was high in all fields sampled, and in some fields, particularly in Pernambuco, incidence of virus-like symptoms was close to 100%, and no tomatoes of commercial value were harvested (1). Using primer pairs PAL1v1978/PAR1c496 and PCRc1/PBL1v2040 (4), DNA-A and -B fragments were polymerase chain reaction (PCR)-amplified from total DNA extracted from diseased plants, cloned, and sequenced. Sequence comparisons of the PCR fragments indicated the existence of at least six different geminiviruses. The nucleotide sequence homologies for DNA-A fragments ranged from 67 to 80% for the 5' end of the cp gene, and from 44 to 80% for the 5' end of the rep gene. Data base comparisons indicated the viruses are most closely related to TGMV, bean golden mosaic virus from Brazil (BGMV-Br), and tomato yellow vein streak virus (ToYVSV), although homologies were less than 80% for the fragments compared. A similar lack of a close relationship with each other and other geminiviruses was obtained with two DNA-B component PCR products compared, corresponding to the 5' end of the BC1 open reading frame. Infectious, full-length genomic clones from the tomato viruses are being generated for biological and molecular characterization. References: (1) I. C. Bezerra et al. Fitopatol. Bras. 22:331, 1997. (2) F. H. França et al., Ann. Soc. Entomol. Bras. 25:369, 1996. (3) J. C. Matyis et al. Summa Phytopathol. 1:267, 1975. (4) M. R. Rojas et al. Plant Dis. 77:340, 1993.
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Affiliation(s)
- S G Ribeiro
- Embrapa-Biotecnologia, Cx. Postal 2372, Brasília, DF, 70770-900, Brazil
| | - A C de Ávila
- EMBRAPA-Hortaliças, Cx. Postal 218, Brasília, DF, 70359-970, Brazil
| | - I C Bezerra
- EMBRAPA-Hortaliças, Cx. Postal 218, Brasília, DF, 70359-970, Brazil
| | - J J Fernandes
- Dep. de Agronomia, UF Uberlândia, MG, 38400-902, Brazil
| | - J C Faria
- EMBRAPA-Arroz e Feijão, Cx. Postal 179, Goiânia, GO, 74100-000, Brazil
| | - M F Lima
- EMBRAPA-Semi-Árido, Cx. Postal 23, Petrolina, PE, 56300-000, Brazil
| | - R L Gilbertson
- Department of Plant Pathology, University of California, Davis, 95616
| | | | - F M Zerbini
- Dep. de Fitopatologia, UF Viçosa, MG, 36571-000, Brazil
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Bezerra IC, Castro LA, Neshich G, de Almeida ER, de Sá MF, Mello LV, Monte-Neshich DC. A corm-specific gene encodes tarin, a major globulin of taro (Colocasia esculenta L. Schott). Plant Mol Biol 1995; 28:137-144. [PMID: 7787178 DOI: 10.1007/bf00042045] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
A gene encoding a globulin from a major taro (Colocasia esculenta L. Schott) corm protein family, tarin (G1, ca. 28 kDa) was isolated from a lambda Charon 35 library, using a cDNA derived from a highly abundant corm-specific mRNA, as probe. The gene, named tar1, and the corresponding cDNA were characterized and compared. No introns were found. The major transcription start site was determined by primer extension analysis. The gene has an open reading frame (ORF) of 765 bp, and the deduced amino acid sequence indicated a precursor polypeptide of 255 residues that is post-translationally processed into two subunits of about 12.5 kDa each. The deduced protein is 45% homologous to curculin, a sweet-tasting protein found in the fruit pulp of Curculigo latifolia and 40% homologous to a mannose-binding lectin from Galanthus nivalis. Significant similarity was also found at the nucleic acid sequence level with genes encoding lectins from plant species of the Amaryllidaceae and Lilliaceae families.
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Affiliation(s)
- I C Bezerra
- EMBRAPA/National Center of Genetic Resource and Biotechnology, SAIN Parque Rural, Brasília, DF, Brazil
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