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de Souza TD, de Godoy SM, Feliciano DC, Binneck E, Rangel DEN, Sosa-Gómez DR. Genetic diversity of the entomopathogenic fungus Metarhizium rileyi based on de novo microsatellite markers. J Invertebr Pathol 2024; 204:108081. [PMID: 38458349 DOI: 10.1016/j.jip.2024.108081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 01/31/2024] [Accepted: 02/27/2024] [Indexed: 03/10/2024]
Abstract
Epizootics of the entomopathogenic fungus Metarhizium rileyi regulate lepidopteran populations in soybean, cotton, and peanut agroecosystems to the point that insecticide applications could be unnecessary. However, the contribution and how different strains operate during the epizootic are unknown. Several unanswered questions remain: 1. How many genotypes of M. rileyi are present during an epizootic? 2. Which genotype is the most common among them? 3. Are the genotypes involved in annual epizootics at the same location the same? Therefore, the development of molecular markers to accurately identify these genotypes is very important to answer these questions. SSR primers were designed by prospecting in silico to discriminate genotypes and infer the genetic diversity of M. rileyi isolates from the collection kept at Embrapa Soybean. We tested 13 SSR markers on 136 isolates to identify 43 clones and 12 different genetic clusters, with genetic diversity ranging from Hs = 0.15 (cluster I) to Hs = 0.41 (cluster IV) and an average diversity of 0.24. No clusters were categorically distinguished based on hosts or geographical origin using Bayesian clustering analysis. Nonetheless, some clusters comprised most of the isolates with a common geographic origin; for example, cluster VIII was mainly composed of isolates from Central-western Brazil, cluster II from Southern Brazil, and cluster XII from Quincy, Northern Florida, in the United States. Underrepresented regions (few isolates) from Pacific Island nations of Japan, the Philippines, and Indonesia (specifically from Java) were placed into clusters IX and X. Although the analyzed isolates displayed evidence of clonal structure, the genetic diversity indices suggest a potential for the species to adapt to different environmental conditions.
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Affiliation(s)
- Tamires Doroteo de Souza
- Department of Zoology, Biological Science Sector, Universidade Federal do Paraná, Curitiba, PR, Brazil
| | | | - Daniele C Feliciano
- Department of General Biology, Universidade Estadual de Londrina, Londrina, PR, Brazil
| | | | - Drauzio E N Rangel
- Universidade Tecnológica Federal do Paraná, 85660-000, Dois Vizinhos, PR, Brazil
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Vera M, Zuern S, Henríquez-Valencia C, Loncoman C, Canales J, Waller F, Basoalto E, Garnica S. Exploring interactions between Beauveria and Metarhizium strains through co-inoculation and responses of perennial ryegrass in a one-year trial. PeerJ 2022; 10:e12924. [PMID: 35341038 PMCID: PMC8944343 DOI: 10.7717/peerj.12924] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 01/20/2022] [Indexed: 01/11/2023] Open
Abstract
Perennial ryegrass (Lolium perenne L.) possesses a high level of nutritional quality and is widely used as a forage species to establish permanent pastures in southern Chile. However, the productivity of most such pastures is limited by various environmental agents, such as insect pests and drought. In this context, our work stresses the need for elucidating the ability of fungal endophytes to establish interactions with plants, and to understand how these processes contribute to plant performance and fitness. Therefore, we evaluated the colonization and impact of two native strains of the endophytic insect-pathogenic fungus (EIPF) group isolated from permanent ryegrass pastures in southern Chile. Roots and seeds of ryegrass and scarabaeid larvae were collected from nine different ryegrass pastures in the Los Ríos region of southern Chile to specifically isolate EIPFs belonging to the genera Beauveria and Metarhizium. Fungal isolations were made on 2% water agar with antibiotics, and strains were identified by analyzing the entire internal transcribed spacer (ITS) 1-5.8S-ITS2 ribosomal DNA region. Four strains of Beauveria and 33 strains of Metarhizium were isolated only in scarabaeid larvae from ryegrass pastures across four sites. Experimental mini-pastures that were either not inoculated (control) or co-inoculated with conidia of the strains Beauveria vermiconia NRRL B-67993 (P55_1) and Metarhizium aff. lepidiotae NRRL B-67994 (M25_2) under two soil humidity levels were used. Ryegrass plants were randomly collected from the mini-pastures to characterize EIPF colonization in the roots by real-time PCR and fluorescence microscopy. Aboveground biomass was measured to analyze the putative impact of colonization on the mini-pastures' aboveground phenotypic traits with R software using a linear mixed-effects model and the ANOVA statistical test. Seasonal variation in the relative abundance of EIPFs was observed, which was similar between both strains from autumn to spring, but different in summer. In summer, the relative abundance of both EIPFs decreased under normal moisture conditions, but it did not differ significantly under water stress. The aboveground biomass of ryegrass also increased from autumn to spring and decreased in summer in both the inoculated and control mini-pastures. Although differences were observed between moisture levels, they were not significant between the control and inoculated mini-pastures, except in July (fresh weight and leaf area) and October (dry weight). Our findings indicate that native strains of B. vermiconia NRRL B-67993 (P55_1) and M. aff. lepidiotae NRRL B-67994 (M25_2) colonize and co-exist in the roots of ryegrass, and these had little or no effect on the mini-pastures' aboveground biomass; however, they could have other functions, such as protection against root herbivory by insect pests.
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Affiliation(s)
- Milena Vera
- Instituto de Bioquímica y Microbiología, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile
| | - Sarah Zuern
- Instituto de Bioquímica y Microbiología, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile
| | - Carlos Henríquez-Valencia
- Instituto de Bioquímica y Microbiología, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile
| | - Carlos Loncoman
- Instituto de Bioquímica y Microbiología, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile
| | - Javier Canales
- Instituto de Bioquímica y Microbiología, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile,ANID–Millennium Science Initiative Program, Millennium Institute for Integrative Biology (iBio), Santiago, Chile
| | - Frank Waller
- Pharmaceutical Biology, Julius-von-Sachs Institute for Biosciences, Julius-Maximilians Universität Würzburg, Würzburg, Germany
| | - Esteban Basoalto
- Instituto de Producción y Sanidad Vegetal, Facultad de Ciencias Agrarias y Alimentarias, Universidad Austral de Chile, Valdivia, Chile
| | - Sigisfredo Garnica
- Instituto de Bioquímica y Microbiología, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile
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Riguetti Zanardo Botelho AB, Alves-Pereira A, Colonhez Prado R, Zucchi MI, Delalibera Júnior I. Metarhizium species in soil from Brazilian biomes: a study of diversity, distribution, and association with natural and agricultural environments. FUNGAL ECOL 2019. [DOI: 10.1016/j.funeco.2019.07.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Muehlbauer MF, Tobia J, Honig JA, Zhang N, Hillman BI, Gold KM, Molnar TJ. Population Differentiation Within Anisogramma anomala in North America. PHYTOPATHOLOGY 2019; 109:1074-1082. [PMID: 30540554 DOI: 10.1094/phyto-06-18-0209-r] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Anisogramma anomala, a biotrophic ascomycete in the order Diaporthales, causes eastern filbert blight (EFB) of hazelnuts (Corylus spp.). Until recently, little has been documented on its genetic diversity and population structure. In this study, 18 simple sequence repeat markers were used to fingerprint 182 accessions of the fungus originating from across North America. Our results, based on summary statistics of the allelic data, a discriminant analysis of principal components (DAPC) scatterplot, an unweighted pair group method with arithmetic mean (UPGMA) dendrogram, and analysis of multilocus genotypes, show that A. anomala exhibits considerable genetic diversity across multiple populations. Eleven clusters were resolved from the DAPC scatterplot, five of which were validated by statistically supported clusters in the UPGMA dendrogram. The 11 DAPC clusters were statistically significant via an analysis of molecular variance. Dendrogram topology and DAPC scatterplot groups showed some correlation with collection origin; samples collected in proximity tended to cluster together and be genetically similar. However, some locations held populations that were diverse and some populations with a high degree of similarity had disparate origins, suggesting movement by humans. Overall, the results demonstrate the presence of multiple, genetically distinct populations of A. anomala in North America and serve as a reference to assist in understanding and managing EFB.
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Affiliation(s)
- Megan F Muehlbauer
- 1 Rutgers University Cooperative Extension of Hunterdon County, Flemington, NJ 08822-2900
| | - Janine Tobia
- 2 Department of Plant Biology, Rutgers University, New Brunswick, NJ 08901; and
| | - Joshua A Honig
- 2 Department of Plant Biology, Rutgers University, New Brunswick, NJ 08901; and
| | - Ning Zhang
- 2 Department of Plant Biology, Rutgers University, New Brunswick, NJ 08901; and
| | - Bradley I Hillman
- 2 Department of Plant Biology, Rutgers University, New Brunswick, NJ 08901; and
| | - Kaitlin Morey Gold
- 3 Department of Plant Pathology, University of Wisconsin, Madison, WI 53706-1598
| | - Thomas J Molnar
- 2 Department of Plant Biology, Rutgers University, New Brunswick, NJ 08901; and
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Nishi O, Iiyama K, Yasunaga-Aoki C, Shimizu S. Species associations and distributions of soil entomopathogenic fungi Metarhizium spp. in Japan. Mycology 2017; 8:308-317. [PMID: 30123651 PMCID: PMC6059053 DOI: 10.1080/21501203.2017.1386244] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2017] [Accepted: 09/26/2017] [Indexed: 11/14/2022] Open
Abstract
Metarhizium Sorokīn (Hypocreales: Clavicipitaceae) is a genus of facultative parasites of insects found in soils from various environments and is used for pest management. Understanding the habitat selection of Metarhizium spp. is critical to improve the efficacy and persistence of these fungi as microbial insecticides. This study sought to determine the habitat preferences of Metarhizium spp. in Japan. We identified 302 isolates of Metarhizium spp. as eight species by a combination of PCR–RFLP and phylogenetic analysis of DNA sequences. M. pingshaense was the predominant species in Japan and was most frequently isolated from both forest and agricultural environments. On the other hand, M. brunneum and M. pemphigi were comparatively restricted to forest environments. A similar species association was detected in a small area that was intensively investigated, where 7 species including 14 genotypes were isolated from soil. The results of this study have revealed different habitat preferences among Metarhizium spp. in Japan.
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Affiliation(s)
- Oumi Nishi
- Forest Entomology Division, Forestry and Forest Products Research Institute, Tsukuba City, Japan.,Research Fellowship for Young Scientists, Japan Society for the Promotion of Science, Chiyoda-ku, Tokyo, Japan.,Laboratory of Insect Pathology and Microbial Control, Institute of Biological Control, Kyushu University, Higashi-ku, Fukuoka City, Japan
| | - Kazuhiro Iiyama
- Laboratory of Insect Pathology and Microbial Control, Institute of Biological Control, Kyushu University, Higashi-ku, Fukuoka City, Japan
| | - Chisa Yasunaga-Aoki
- Laboratory of Insect Pathology and Microbial Control, Institute of Biological Control, Kyushu University, Higashi-ku, Fukuoka City, Japan
| | - Susumu Shimizu
- Nishi-Nippon Junior College, Chuo-ku, Fukuoka City, Japan
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Jing Y, Peng M, Yang L, Wang Q. Evaluation of genetic diversity among Piptoporus betulinusas revealed by inter simple sequence repeat markers. BIOTECHNOL BIOTEC EQ 2017. [DOI: 10.1080/13102818.2016.1276413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Affiliation(s)
- Yanli Jing
- Department of Genetics, College of Life Science, Northeast Forestry University, Harbin, PR China
- College of Agriculture, Heilongjiang Bayi Agricultural University, Harbin, PR China
| | - Mu Peng
- Department of Genetics, College of Life Science, Northeast Forestry University, Harbin, PR China
| | - Lixia Yang
- Department of Genetics, College of Life Science, Northeast Forestry University, Harbin, PR China
- College of Life and Environmental Science, Hulunbuir University, Hulunbuir, PR China
| | - Qiuyu Wang
- Department of Genetics, College of Life Science, Northeast Forestry University, Harbin, PR China
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Hernández-Domínguez C, Guzmán-Franco AW, Carrillo-Benítez MG, Alatorre-Rosas R, Rodríguez-Leyva E, Villanueva-Jiménez JA. Specific Diversity of Metarhizium Isolates Infecting Aeneolamia spp. (Hemiptera: Cercopidae) in Sugarcane Plantations. NEOTROPICAL ENTOMOLOGY 2016; 45:80-87. [PMID: 26438409 DOI: 10.1007/s13744-015-0337-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Accepted: 09/14/2015] [Indexed: 06/05/2023]
Abstract
Spittlebugs from the genus Aeneolamia are important pests of sugarcane. Although the use of the entomopathogenic fungus Metarhizum anisopliae s.l. for control of this pest is becoming more common in Mexico, fundamental information regarding M. anisopliae in sugarcane plantations is practically non-existent. Using phylogenetic analysis, we determined the specific diversity of Metarhizium spp. infecting adult spittlebugs in sugarcane plantations from four Mexican states. We obtained 29 isolates of M. anisopliae s.str. Haplotype network analysis revealed the existence of eight haplotypes. Eight selected isolates, representing the four Mexican states, were grown at different temperatures in vitro; isolates from Oaxaca achieved the greatest growth followed by isolates from Veracruz, San Luis Potosi and Tabasco. No relationship was found between in vitro growth and haplotype diversity. Our results represent a significant contribution to the better understanding of the ecology of Metarhizum spp. in the sugarcane agroecosystem.
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Affiliation(s)
- C Hernández-Domínguez
- Colegio de Postgraduados, Campus Montecillo, Posgrado en Fitosanidad, Entomología y Acarología, Entomología y Acarología, 56230, Texcoco, Estado de México, Mexico
| | - A W Guzmán-Franco
- Colegio de Postgraduados, Campus Montecillo, Posgrado en Fitosanidad, Entomología y Acarología, Entomología y Acarología, 56230, Texcoco, Estado de México, Mexico.
| | - M G Carrillo-Benítez
- Colegio de Postgraduados, Campus Montecillo, Posgrado en Fitosanidad, Entomología y Acarología, Entomología y Acarología, 56230, Texcoco, Estado de México, Mexico
| | - R Alatorre-Rosas
- Colegio de Postgraduados, Campus Montecillo, Posgrado en Fitosanidad, Entomología y Acarología, Entomología y Acarología, 56230, Texcoco, Estado de México, Mexico
| | - E Rodríguez-Leyva
- Colegio de Postgraduados, Campus Montecillo, Posgrado en Fitosanidad, Entomología y Acarología, Entomología y Acarología, 56230, Texcoco, Estado de México, Mexico
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8
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Multiplexed microsatellite markers for seven Metarhizium species. J Invertebr Pathol 2015; 132:132-134. [DOI: 10.1016/j.jip.2015.09.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Revised: 09/17/2015] [Accepted: 09/21/2015] [Indexed: 11/19/2022]
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9
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Steinwender BM, Enkerli J, Widmer F, Eilenberg J, Thorup-Kristensen K, Meyling NV. Molecular diversity of the entomopathogenic fungal Metarhizium community within an agroecosystem. J Invertebr Pathol 2014; 123:6-12. [DOI: 10.1016/j.jip.2014.09.002] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Revised: 08/27/2014] [Accepted: 09/03/2014] [Indexed: 10/24/2022]
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Rocha LFN, Inglis PW, Humber RA, Kipnis A, Luz C. Occurrence of Metarhizium spp. in Central Brazilian soils. J Basic Microbiol 2012; 53:251-9. [PMID: 22733433 DOI: 10.1002/jobm.201100482] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2011] [Accepted: 12/23/2011] [Indexed: 11/09/2022]
Abstract
The biodiversity of entomopathogenic fungi in tropical ecosystems is still little investigated, and the objective of this study was to isolate and identify fungi of the entomopathogenic genus Metarhizium (Hypocreales: Clavicipitaceae) present in undisturbed soils of the Central Brazilian Cerrado. A total of 107 Metarhizium isolates was obtained from soils collected from Cerrado sites in the state of Goiás; gene sequences from 63 of these were obtained and compared. Among these, one was confirmed to be M. anisopliae sensu stricto; 53 were very closely allied to M. anisopliae but require more extensive genetic characterization to determine if they might represent a new taxon in the M. anisopliae species complex. Eight of these Cerrado isolates were referable to M. robertsii, and the remaining isolate is the first South American (and Southern Hemisphere) collection of M. flavoviride var. pemphigi. These findings underline the need for better characterization of the diversity of these widely distributed fungi in Brazil.
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Affiliation(s)
- Luiz F N Rocha
- DMIPP, Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Goiânia, GO, Brazil
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Tiago PV, Carneiro-Leão MP, Lima MLA, Oliveira NT, Luna-Alves Lima EA. Polymorphism in Metarhizium anisopliae var. anisopliae (Hypocreales: Clavicipitaceae) based on internal transcribed spacer-RFLP, ISSR and intron markers. GENETICS AND MOLECULAR RESEARCH 2012; 10:1565-75. [PMID: 21863552 DOI: 10.4238/vol10-3gmr1069] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Isolates of entomopathogenic fungus Metarhizium anisopliae var. anisopliae were characterized using internal transcribed spacer-RFLP, ISSR and intron splice site primers. Thirty-seven isolates were studied, most of which were obtained from the sugar cane pest, Mahanarva fimbriolata (Hemiptera: Cercopidae) from Tangará da Serra, Southwest Mato Grosso State, Brazil. Internal transcribed spacer-RFLP did not differentiate the isolates of M. anisopliae var. anisopliae, while ISSR and intron primers identified three distinct groups. Variability among these groups was 96% for (GTG)(5) and 100% for the other primers. We found considerable genetic variability, even among isolates from the same geographical origin and host.
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Affiliation(s)
- P V Tiago
- Departamento de Micologia, Universidade Federal de Pernambuco, Recife, PE, Brasil.
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Determination of genetic variability among the isolates of Metarhizium anisopliae var. anisopliae from different geographical origins. World J Microbiol Biotechnol 2010. [DOI: 10.1007/s11274-010-0466-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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13
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Oulevey C, Widmer F, Kölliker R, Enkerli J. An optimized microsatellite marker set for detection of Metarhizium anisopliae genotype diversity on field and regional scales. ACTA ACUST UNITED AC 2009; 113:1016-24. [DOI: 10.1016/j.mycres.2009.06.005] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2008] [Revised: 04/28/2009] [Accepted: 06/12/2009] [Indexed: 11/16/2022]
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Yanaka-Schäfer FY, Dall'Onder LP, Panichi MC, Mendes RG, Fagundes NJ, Bandinelli JB, Bogo MR. Sequence analysis of the rDNA intergenic spacer of Metarhizium strains isolated in Brazil. Genet Mol Biol 2008. [DOI: 10.1590/s1415-47572008000100020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Affiliation(s)
| | | | | | | | - Nelson J.R. Fagundes
- Pontifícia Universidade Católica do Rio Grande do Sul, Brazil; Universidade Federal do Rio Grande do Sul, Brazil
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