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Dionisio JF, Pezenti LF, de Souza RF, Sosa-Gómez DR, da Rosa R. Annotation of transposable elements in the transcriptome of the Neotropical brown stink bug Euschistus heros and its chromosomal distribution. Mol Genet Genomics 2023; 298:1377-1388. [PMID: 37646857 DOI: 10.1007/s00438-023-02063-9] [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: 01/30/2023] [Accepted: 08/17/2023] [Indexed: 09/01/2023]
Abstract
Transposable elements (TEs) are DNA sequences capable of moving within the genome. Their distribution is very dynamic among organisms, and despite advances, there are still gaps in the understanding of the diversity and evolution of TEs in many insect species. In the case of Euschistus heros, considered the main stink bug in the soybean crop in Brazil, little is known about the participation of these elements. Therefore, the objective of the current work was to identify the different groups of transposable elements present in the E. heros transcriptome, evidencing their chromosomal distribution. Through RNA-Seq and de novo assembly, 60,009 transcripts were obtained, which were annotated locally via Blastn against specific databases. Of the 367 transcripts identified as TEs, 202 belong to Class II, with emphasis on the TIR order. Among Class I elements or retrotransposons, most were characterized as LINE. Phylogenetic analyses were performed with the protein domains, evidencing differences between Tc1-mariner sequences, which may be related to possible horizontal transfer events. The transposable elements that stood out in the transcriptome were selected for fluorescent in situ hybridization. DNA transposon probes hAT, Helitron, and Tc1-mariner showed mostly scattered signals, with the presence of some blocks. Retrotransposon probes Copia, Gypsy, Jockey, and RTE showed a more pulverized hybridization pattern, with the presence of small interstitial and/or terminal blocks. Studies like this one, integrating functional genomics and molecular cytogenetic tools, are essential to expanding knowledge about transcriptionally active mobile elements, and their behavior in the chromosomes.
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Affiliation(s)
- Jaqueline Fernanda Dionisio
- Laboratório de Citogenética e Entomologia Molecular, Departamento de Biologia Geral, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid, PR 445 Km 350, Campus Universitário, Caixa Postal: 10.011, Londrina, PR, CEP:86.057-970, Brazil
| | - Larissa Forim Pezenti
- Laboratório de Citogenética e Entomologia Molecular, Departamento de Biologia Geral, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid, PR 445 Km 350, Campus Universitário, Caixa Postal: 10.011, Londrina, PR, CEP:86.057-970, Brazil
- Laboratório de Bioinformática, Departamento de Biologia Geral, Universidade Estadual de Londrina, Caixa Postal: 10.011, Londrina, PR, CEP:86.057-970, Brazil
| | - Rogério Fernandes de Souza
- Laboratório de Bioinformática, Departamento de Biologia Geral, Universidade Estadual de Londrina, Caixa Postal: 10.011, Londrina, PR, CEP:86.057-970, Brazil
| | - Daniel Ricardo Sosa-Gómez
- Empresa Brasileira de Pesquisa Agropecuária/Centro Nacional de Pesquisa de Soja (Embrapa Soja), Caixa Postal: 4006, Londrina, PR, CEP: 86085-981, Brazil
| | - Renata da Rosa
- Laboratório de Citogenética e Entomologia Molecular, Departamento de Biologia Geral, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid, PR 445 Km 350, Campus Universitário, Caixa Postal: 10.011, Londrina, PR, CEP:86.057-970, Brazil.
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Lopes TBF, Aguiar RCM, de Souza RF, Nascimento CC, Dionísio JF, Mantovani MS, Semprebon SC, da Rosa R. Influence of temperature variation on gene expression and cocoon production in Bombyx mori Linnaeus, 1758 (Lepidoptera: Bombycidae). Comp Biochem Physiol Part D Genomics Proteomics 2023; 47:101111. [PMID: 37516100 DOI: 10.1016/j.cbd.2023.101111] [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] [Received: 04/11/2023] [Revised: 07/14/2023] [Accepted: 07/14/2023] [Indexed: 07/31/2023]
Abstract
Silkworms (Bombyx mori) are lepidopterans of economic importance for global silk production. However, factors that directly affect the yield and quality of silkworm cocoon production, such as diseases and temperature fluctuations, cause great economic losses. Knowing how they respond to rearing temperature during the most critical stage of their life cycle (i.e., fifth instar) could provide information on their adaptation and improve silk production. In the current work, we analyzed transcriptional data from two groups of B. mori that were reared at 26 °C and 34 °C throughout the fifth instar. The silkworms and cocoons were weighed. In total, 3115 transcripts were differentially expressed (DE; including 1696 down-regulated and 1419 up-regulated) among the 29,157 sequences found by transcriptome assembly. We emphasize the genes associated with immunological response, transcription factors, silk biosynthesis, and heat shock proteins, among the DE transcripts in response to the temperature conditions. Silkworms reared at 34 °C presented a reduced mean body weight (-0.944 g in comparison to the 26 °C group), which had a direct impact on the weight of cocoons formed and the silk conversion rate. These changes were statistically significant when compared to silkworms reared at 26 °C. Mortality rates (6 and 9 %, at 26 °C and 34 °C, respectively) were similar to those obtained in breeding fields. The findings provide information on the biological processes involved in the temperature response mechanism of silkworms, as well as information that may be used in future climatization processes at rearing facilities and in breeding for improved thermotolerance.
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Affiliation(s)
- Thayná Bisson Ferraz Lopes
- Laboratório de Citogenética e Entomologia Molecular, Departamento de Biologia Geral, Universidade Estadual de Londrina, Londrina, Paraná, Brazil.
| | - Rachel Colauto Milanezi Aguiar
- Laboratório de Citogenética e Entomologia Molecular, Departamento de Biologia Geral, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Rogério Fernandes de Souza
- Laboratório de Bioinformática, Departamento de Biologia Geral, Universidade Estadual de Londrina, Londrina, Paraná, Brazil.
| | - Cristianne Cordeiro Nascimento
- Departamento de Design Gráfico, Centro de Educação, Comunicação e Artes, Universidade Estadual de Londrina, Londrina, Paraná, Brazil.
| | - Jaqueline Fernanda Dionísio
- Laboratório de Citogenética e Entomologia Molecular, Departamento de Biologia Geral, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Mario Sergio Mantovani
- Laboratório de Genética Toxicológica, Departamento de Biologia Geral, Universidade Estadual de Londrina, Londrina, Paraná, Brazil.
| | - Simone Cristine Semprebon
- Laboratório de Genética Toxicológica, Departamento de Biologia Geral, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Renata da Rosa
- Laboratório de Citogenética e Entomologia Molecular, Departamento de Biologia Geral, Universidade Estadual de Londrina, Londrina, Paraná, Brazil.
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Pezenti LF, Dionisio JF, Sosa-Gómez DR, de Souza RF, da Rosa R. Transposable elements in the transcriptome of the velvetbean caterpillar Anticarsia gemmatalis Hübner, 1818 (Lepidoptera: Erebidae). Genome 2023. [DOI: 10.1139/gen-2022-0066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
Abstract
Transposable elements (TEs) are DNA sequences that possess the ability to move from one genomic location to another. These sequences contribute to a significant fraction of the genomes of most eukaryotes and can impact their architecture and regulation. In this paper, we present the first data related to the identification and characterization of TEs present in the transcriptome of Anticarsia gemmatalis. Approximately, 835 transcripts showed significant similarity to TEs and (or) characteristic domains. Retrotransposons accounted for 71.2% (595 sequences) of the identified elements, while DNA transposons were less abundant, with 240 annotations (28.8%). TEs were classified into 30 superfamilies, with SINE3/5S and Gypsy being the most abundant. Based on the sequences of TEs found in the transcriptome, we were able to locate conserved regions in the chromosomes of this species. The analysis of differential expression of TEs in susceptible and resistant strains, challenged and not challenged with Bacillus thuringiensis ( Bt) from in silico analysis, indicated that exposure to Bt can regulate the transcription of mobile genetic elements in the velvetbean caterpillar. Thus, these data contribute significantly to the knowledge of the structure and composition of these elements in the genome of this species, and suggest the role of stress on their expression.
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Dias FC, de Souza RF, Pezenti LF, Dionisio JF, Paulino JAM, da Silva CRM, Sosa-Gómez DR, da Rosa R. Transcriptional Analysis of Microsatellites in Velvetbean Caterpillar Anticarsia gemmatalis Hübner, 1818. Cytogenet Genome Res 2023; 162:273-282. [PMID: 36689934 DOI: 10.1159/000527049] [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: 05/26/2022] [Accepted: 09/14/2022] [Indexed: 01/24/2023] Open
Abstract
Brazil is the largest producer of soybeans in the world. The vast extent of soybean plantations across the Brazilian territory exposes this crop to attack by several insects, including the velvetbean caterpillar, Anticarsia gemmatalis. One of the alternatives used to control this insect are the toxins produced by Bacillus thuringiensis (Bt). However, in some cases, resistance to these toxins has been reported in the laboratory. Despite the ecological and economic impact of the velvetbean caterpillar, there are few studies on the genetic structure of this species, especially with regard to microsatellites. In this paper, we carried out a comparative transcriptional analysis of microsatellites in resistant (RES) and susceptible (SUS) strains of A. gemmatalis challenged and not challenged with Bt toxins. According to the number of sequences analyzed in each group, a 7.9% simple sequence repeat (SSR) rate was identified for the SUS library, and 7.4% for SUSBt. For the RES group, this value was 8.5% and for the RESBt 7.7%. Most of the fragments found showed a shorter repeat pattern, located in mono- and trinucleotide motifs. Among the 128 types of SSR motifs, it was possible to notice a large amount of adenine and thymine in relation to guanine and cytosine, which was also seen in chromosomes after staining with base-specific fluorochromes DAPI/CMA3, highlighting DAPI-positive regions. Although the participation of microsatellites in the resistance mechanism of A. gemmatalis to Bt is not clear, the results obtained in this work contribute to a better understanding of the repetitive DNA found in transcribed regions of a non-model organism.
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Affiliation(s)
- Felipe Cordeiro Dias
- Laboratório de Citogenética e Entomologia Molecular, Universidade Estadual de Londrina, Londrina, Brazil
| | | | - Larissa Forim Pezenti
- Laboratório de Citogenética e Entomologia Molecular, Universidade Estadual de Londrina, Londrina, Brazil.,Laboratório de Bioinformática, Universidade Estadual de Londrina, Londrina, Brazil
| | | | | | | | | | - Renata da Rosa
- Laboratório de Citogenética e Entomologia Molecular, Universidade Estadual de Londrina, Londrina, Brazil
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Rubert M, Takagui FH, dos Santos KF, Santana Pompeo LR, da Rosa R, Zawadzki CH, Mariotto S, Baumgärtner L, Moreira-Filho O, Giuliano-Caetano L. Topotype-Based Chromosomal Diversity among Five Species of Freshwater Armored Catfishes in the Hypostomus auroguttatus Supergroup (Actinopterygii: Siluriformes). Zoolog Sci 2022; 39:446-452. [DOI: 10.2108/zs210103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 04/22/2022] [Indexed: 11/17/2022]
Affiliation(s)
- Marceléia Rubert
- Departamento de Genética e Evolução, Universidade Federal de São Carlos, Rodovia Washington Luís, km 235- SP-310, P.O. Box 676, CEP 13565-905, São Carlos, São Paulo, Brazil
| | - Fábio Hiroshi Takagui
- Departamento de Biologia Geral, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid, PR 445 Km 380, Campus Universitário, P.O. Box 6001, CEP 86051-970, Londrina, Paraná, Brazil
| | - Kátia Fabiana dos Santos
- Departamento de Biologia Geral, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid, PR 445 Km 380, Campus Universitário, P.O. Box 6001, CEP 86051-970, Londrina, Paraná, Brazil
| | - Luis Ricardo Santana Pompeo
- Departamento de Biologia Geral, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid, PR 445 Km 380, Campus Universitário, P.O. Box 6001, CEP 86051-970, Londrina, Paraná, Brazil
| | - Renata da Rosa
- Departamento de Biologia Geral, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid, PR 445 Km 380, Campus Universitário, P.O. Box 6001, CEP 86051-970, Londrina, Paraná, Brazil
| | - Claudio Henrique Zawadzki
- Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura; Universidade Estadual de Maringá; Av. Colombo 5790, G-90, Sala 18-B, 87020-900 Maringá, Paraná, Brazil
| | - Sandra Mariotto
- Instituto Federal de Educação Ciência e Tecnologia de Mato Grosso (IFMT), Campus Bela Vista. Rua Juliano Costa Marques s/n, Bela Vista, 78050-560 Cuiabá, Mato Grosso, Brazil
| | - Lucas Baumgärtner
- Laboratório de Citogenética; Centro de Ciências Biológicas e da Saúde; Universidade Estadual do Oeste do Paraná. Rua Universitária 2069, Cascavel-Brasil
| | - Orlando Moreira-Filho
- Departamento de Genética e Evolução, Universidade Federal de São Carlos, Rodovia Washington Luís, km 235- SP-310, P.O. Box 676, CEP 13565-905, São Carlos, São Paulo, Brazil
| | - Lucia Giuliano-Caetano
- Departamento de Biologia Geral, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid, PR 445 Km 380, Campus Universitário, P.O. Box 6001, CEP 86051-970, Londrina, Paraná, Brazil
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Furlan Lopes C, Lemos Costa A, Dionísio JF, Delgado Cañedo A, da Rosa R, Del Valle Garnero A, Inacio Ribeiro JR, Gunski RJ. Chromosomal distribution of major rDNA and genome size variation in Belostoma angustum Lauck, B. nessimiani Ribeiro & Alecrim, and B. sanctulum Montandon (Insecta, Heteroptera, Belostomatidae). Genetica 2022; 150:235-246. [PMID: 35543891 DOI: 10.1007/s10709-022-00156-8] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Accepted: 04/14/2022] [Indexed: 11/26/2022]
Abstract
Known as "electric-light bugs", belostomatids potentially act as agents of biological control. The Belostoma genus has holokinetic chromosomes, interspecific variation in diploid number, sex chromosome system and DNA content. Thus, the chromosomal complement, the accumulation of constitutive heterochromatin and the distribution of rDNA clusters by fluorescence in situ hybridization (FISH) in Belostoma angustum (BAN), Belostoma sanctulum (BSA), and Belostoma nessimiani (BNE) were evaluated. In addition, a comparative analysis of the DNA content of these species and B. estevezae (BES) was performed. BES has the highest Belostoma DNA content, while BSA has the lowest. BAN showed 2n = 29 + X1X2Y, while BSA and BNE had 2n = 14 + XY. BSA showed 18S rDNA markings on sex chromosomes, while BNE and BAN did on autosomes. The difference between BSA and BNE occurs because of the possible movement of the rDNA cluster in BNE. We suggest the occurrence of fusion in the autosomes of BSA and BNE, and fragmentation in the sex chromosomes in BAN. Also, the genome size of 1-2 pg represents a haploid DNA content of a common ancestor, from which the genomes of BES and BAN had evolved by gene duplication and heterochromatinization events.
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Affiliation(s)
- Cassiane Furlan Lopes
- Programa de Pós-Graduação em Ciências Biológicas, Universidade Federal do Pampa (UNIPAMPA), Rua Aluízio Barros Macedo, Br 290, km 423 Bairro Piraí, São Gabriel, RS, 97300-300, Brazil.
| | - Alice Lemos Costa
- Programa de Pós-Graduação em Ciências Biológicas, Universidade Federal do Pampa (UNIPAMPA), Rua Aluízio Barros Macedo, Br 290, km 423 Bairro Piraí, São Gabriel, RS, 97300-300, Brazil
| | - Jaqueline Fernanda Dionísio
- Programa de Pós-Graduação em Genética e Biologia Molecular, Universidade Estadual de Londrina, Londrina, PR, Brazil
| | - Andres Delgado Cañedo
- Programa de Pós-Graduação em Ciências Biológicas, Universidade Federal do Pampa (UNIPAMPA), Rua Aluízio Barros Macedo, Br 290, km 423 Bairro Piraí, São Gabriel, RS, 97300-300, Brazil
| | - Renata da Rosa
- Programa de Pós-Graduação em Genética e Biologia Molecular, Universidade Estadual de Londrina, Londrina, PR, Brazil
| | - Analia Del Valle Garnero
- Programa de Pós-Graduação em Ciências Biológicas, Universidade Federal do Pampa (UNIPAMPA), Rua Aluízio Barros Macedo, Br 290, km 423 Bairro Piraí, São Gabriel, RS, 97300-300, Brazil
| | - José Ricardo Inacio Ribeiro
- Laboratório de Estudos da Biodiversidade do Pampa (LEBIP), Universidade Federal do Pampa, São Gabriel, RS, Brazil
| | - Ricardo José Gunski
- Programa de Pós-Graduação em Ciências Biológicas, Universidade Federal do Pampa (UNIPAMPA), Rua Aluízio Barros Macedo, Br 290, km 423 Bairro Piraí, São Gabriel, RS, 97300-300, Brazil
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Pezenti LF, Levy SM, de Souza RF, Sosa-Gómez DR, da Rosa R. Testes morphology and the identification of transcripts of the hormonal pathways of the velvetbean caterpillar Anticarsia gemmatalis Hübner, 1818 (Lepidoptera: Erebidae). Arthropod Struct Dev 2021; 65:101111. [PMID: 34571334 DOI: 10.1016/j.asd.2021.101111] [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] [Received: 06/24/2021] [Revised: 08/31/2021] [Accepted: 09/08/2021] [Indexed: 06/13/2023]
Abstract
Anticarsia gemmatalis is one of the main defoliating pests of soybeans in Brazil. In the current study, we characterized the histomorphology of the testes and the spermatogenesis process in A. gemmatalis. We also identified transcripts involved in the biosynthesis, metabolism, and signaling of juvenile and ecdysteroid hormones, in order to provide information about potential mechanisms of regulation of hormonal pathways in this species. Our analyses revealed that the A. gemmatalis larvae have a pair of kidney-shaped testicles. These are divided into four testicular follicles, where there are germ cell cysts at different stages of development. In the pupal stage, the testicles are fused, so adults have a single spherical testis, with a variable number of follicles. The A. gemmatalis has centripetal spermatogenesis and exhibits spermatic dimorphism. We identified 31 transcripts that encode proteins involved in juvenile hormone and ecdysteroid pathways, such as mevalonate kinase, CYP14A1, ecdysone receptor, among others. Our results on the morphology of the testes and spermatogenesis process, as well as identification of the genes involved in hormonal pathways in A. gemmatalis, provide important data for understanding the biology of this agricultural pest, which can be used as a basis for further research in other economically important lepidopterans.
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Affiliation(s)
- Larissa Forim Pezenti
- Laboratório de Citogenética Animal, Departamento de Biologia Geral, Universidade Estadual de Londrina, Londrina, Paraná, Brazil; Laboratório de Bioinformática, Departamento de Biologia Geral, Universidade Estadual de Londrina, Londrina, Paraná, Brazil.
| | - Sheila Michele Levy
- Laboratório de Insetos, Departamento de Histologia, Universidade Estadual de Londrina, Londrina, Paraná, Brazil.
| | - Rogério Fernandes de Souza
- Laboratório de Bioinformática, Departamento de Biologia Geral, Universidade Estadual de Londrina, Londrina, Paraná, Brazil.
| | - Daniel Ricardo Sosa-Gómez
- Empresa Brasileira de Pesquisa Agropecuária/Centro Nacional de Pesquisa de Soja (Embrapa Soja), Londrina, Paraná, Brazil.
| | - Renata da Rosa
- Laboratório de Citogenética Animal, Departamento de Biologia Geral, Universidade Estadual de Londrina, Londrina, Paraná, Brazil.
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Venturelli NB, Takagui FH, Pompeo LRS, Rodriguez MS, da Rosa R, Giuliano-Caetano L. Cytogenetic markers to understand chromosome diversification and conflicting taxonomic issues in Rineloricaria (Loricariidae: Loricariinae) from Rio Grande do Sul coastal drainages. Biologia (Bratisl) 2021. [DOI: 10.1007/s11756-021-00748-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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da Silva SA, da Rosa R, Milanezi-Aguiar RC, Nascimento CC, Machado ACZ. Morus alba: Host reaction for Meloidogyne javanica, biological nematicides assessment and study of these relationships with yield and quality of leaves, cocoon and health of the silkworm. PLoS One 2021; 16:e0252987. [PMID: 34133425 PMCID: PMC8208536 DOI: 10.1371/journal.pone.0252987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Accepted: 05/25/2021] [Indexed: 11/18/2022] Open
Abstract
Root-knot nematodes cause damage to several crops and the importance of each species can vary according with the crop and the agricultural region. In Brazil, Meloidogyne javanica is one of the most important nematode species parasitizing mulberry. To define management strategies, it is important to know if the crop species is damaged by the parasitism of the nematode and the best choices for control, as the use of nematicides. Biological nematicides have been extensively used in Brazil, but no information regarding its efficiency to control M. javanica in mulberry is available. Besides, it is not known if biological nematicides could improve the quality of leaves or if they alter the nutrient composition of leaves, which could interfere in the development of the silkworms that are feed with these leaves or in the quality of the silk produced. With the aim to address these questions, we propose a study that will start in the phenotyping of the main Brazilian mulberry cultivars to Meloidogyne species, passing through the test of efficiency of biological nematicides in the control of M. javanica in mulberry cultivar Miura, evaluation of the amount and quality of leaves produced and, using these leaves to feed silkworms, in the analyzes of the impact of these diet in the health of silkworms, and in the production and quality of the silk.
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Affiliation(s)
- Santino Aleandro da Silva
- Centro de Ciências Biológicas, Universidade Estadual de Londrina -UEL, Londrina, Paraná, Brazil
- Department of Plant Pathology, Instituto de Desenvolvimento Rural do Paraná –IAPAR/EMATER, Londrina, Paraná, Brasil
| | - Renata da Rosa
- Centro de Ciências Biológicas, Universidade Estadual de Londrina -UEL, Londrina, Paraná, Brazil
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Pezenti LF, Sosa-Gómez DR, de Souza RF, Vilas-Boas LA, Gonçalves KB, da Silva CRM, Vilas-Bôas GT, Baranoski A, Mantovani MS, da Rosa R. Transcriptional profiling analysis of susceptible and resistant strains of Anticarsia gemmatalis and their response to Bacillus thuringiensis. Genomics 2021; 113:2264-2275. [PMID: 34022342 DOI: 10.1016/j.ygeno.2021.05.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 04/03/2020] [Revised: 03/09/2021] [Accepted: 05/17/2021] [Indexed: 02/06/2023]
Abstract
Anticarsia gemmatalis is one of the main defoliators of soybean in Brazil. Bacillus thuringiensis (Bt) transgenic crops are used for their management. In this paper we used RNA-seq to explore the response of A. gemmatalis to Bt HD73, as well as to detect transcriptional differences after Bt infection between resistant and susceptible strains. A total of 3853 and 6224 differentially expressed genes (DGEs) were identified in susceptible and resistant larvae after Bt exposure, respectively. We identified 2143 DEGs between susceptible and resistant larvae and 1991 between susceptible and resistant larvae Bt exposed. Immunity-related genes, Bt toxins receptors, proteases, genes involved in metabolic processes, transporters, cuticle proteins and mobile elements have been identified. qRT-PCR data demonstrated upregulation of five genes in susceptible strain after Bt exposure. These results provide insights to understand the molecular and cellular mechanisms of response to Bt that could be used in strategies to control agricultural pests.
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Affiliation(s)
- Larissa Forim Pezenti
- Laboratório de Citogenética Animal, Departamento de Biologia Geral, Universidade Estadual de Londrina, Londrina, Paraná, Brazil; Laboratório de Bioinformática, Departamento de Biologia Geral, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Daniel Ricardo Sosa-Gómez
- Empresa Brasileira de Pesquisa Agropecuária/Centro Nacional de Pesquisa de Soja (Embrapa Soja), Londrina, Paraná, Brazil.
| | - Rogério Fernandes de Souza
- Laboratório de Bioinformática, Departamento de Biologia Geral, Universidade Estadual de Londrina, Londrina, Paraná, Brazil.
| | - Laurival Antônio Vilas-Boas
- Laboratório de Bioinformática, Departamento de Biologia Geral, Universidade Estadual de Londrina, Londrina, Paraná, Brazil; Laboratório de Genética e Taxonomia de Bactérias, Departamento de Biologia Geral, Universidade Estadual de Londrina, Londrina, Paraná, Brazil.
| | - Kátia Brumatti Gonçalves
- Laboratório de Bioinformática, Departamento de Biologia Geral, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | | | - Gislayne Trindade Vilas-Bôas
- Laboratório de Genética e Taxonomia de Bactérias, Departamento de Biologia Geral, Universidade Estadual de Londrina, Londrina, Paraná, Brazil.
| | - Adrivanio Baranoski
- Laboratório de Genética Toxicológica, Departamento de Biologia Geral, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Mário Sérgio Mantovani
- Laboratório de Genética Toxicológica, Departamento de Biologia Geral, Universidade Estadual de Londrina, Londrina, Paraná, Brazil.
| | - Renata da Rosa
- Laboratório de Citogenética Animal, Departamento de Biologia Geral, Universidade Estadual de Londrina, Londrina, Paraná, Brazil.
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11
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Dionisio JF, da Cruz Baldissera JN, Tiepo AN, Fernandes JAM, Sosa-Gómez DR, da Rosa R. New cytogenetic data for three species of Pentatomidae (Heteroptera): Dichelops melacanthus (Dallas, 1851), Loxa viridis (Palisot de Beauvois, 1805), and Edessa collaris (Dallas, 1851). Comp Cytogenet 2020; 14:577-588. [PMID: 33244356 PMCID: PMC7686203 DOI: 10.3897/compcytogen.v14i4.56743] [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: 07/20/2020] [Accepted: 09/09/2020] [Indexed: 06/11/2023]
Abstract
In this paper, we present new cytogenetic data for three species of the family Pentatomidae: Dichelops melacanthus (Dallas, 1851), Loxa viridis (Palisot de Beauvois, 1805), and Edessa collaris (Dallas, 1851). All studied species presented holocentric chromosomes and inverted meiosis for the sex chromosomes. D. melacanthus has 2n = 12 (10A + XY); L. viridis showed 2n = 14 (12A + XY); and E. collaris showed 2n = 14 (12A + XY). C-banding was performed for the first time in these species and revealed terminal and interstitial heterochromatic regions on the autosomes; DAPI/CMA3 staining showed different fluorescent patterns. In all species, fluorescence in situ hybridization (FISH) with 18S rDNA probe identified signals on one autosomal bivalent, this being the first report of FISH application in the species D. melacanthus and L. viridis. The results obtained add to those already existing in the literature, enabling a better understanding of the meiotic behavior of these insects.
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Affiliation(s)
- Jaqueline Fernanda Dionisio
- Universidade Estadual de Londrina (UEL), Rodovia Celso Garcia Cid, PR 445, Km 380, Caixa Postal 10.011, 86057-970, Londrina, PR, BrazilUniversidade Estadual de LondrinaLondrinaBrazil
| | - Joana Neres da Cruz Baldissera
- Universidade Estadual de Londrina (UEL), Rodovia Celso Garcia Cid, PR 445, Km 380, Caixa Postal 10.011, 86057-970, Londrina, PR, BrazilUniversidade Estadual de LondrinaLondrinaBrazil
| | - Angélica Nunes Tiepo
- Universidade Estadual de Londrina (UEL), Rodovia Celso Garcia Cid, PR 445, Km 380, Caixa Postal 10.011, 86057-970, Londrina, PR, BrazilUniversidade Estadual de LondrinaLondrinaBrazil
| | - José Antônio Marin Fernandes
- Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, Universidade Federal do Pará, 66075-110; PA, BrazilUniversidade Federal do ParáParáBrazil
| | - Daniel Ricardo Sosa-Gómez
- Empresa Brasileira de Pesquisa Agropecuária/Centro Nacional de Pesquisa de Soja (EMBRAPA/CNPSO), Rodovia Carlos João Strass, 86001-970, Distrito de Warta, Londrina, PR, BrazilCentro Nacional de Pesquisa de SojaLondrinaBrazil
| | - Renata da Rosa
- Universidade Estadual de Londrina (UEL), Rodovia Celso Garcia Cid, PR 445, Km 380, Caixa Postal 10.011, 86057-970, Londrina, PR, BrazilUniversidade Estadual de LondrinaLondrinaBrazil
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12
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Takagui FH, Baumgärtner L, Venturelli NB, Paiz LM, Viana P, Dionísio JF, Pompeo LRS, Margarido VP, Fenocchio AS, da Rosa R, Giuliano-Caetano L. Unrevealing the Karyotypic Evolution and Cytotaxonomy of Armored Catfishes (Loricariinae) with Emphasis in Sturisoma, Loricariichthys, Loricaria, Proloricaria, Pyxiloricaria, and Rineloricaria. Zebrafish 2020; 17:319-332. [PMID: 32985966 DOI: 10.1089/zeb.2020.1893] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
This study provides new insight into the chromosomal diversification in Loricariinae. We analyzed nine species from different Brazilian hydrographic basins, using conventional and molecular cytogenetic methods, aiming to understand the karyotypic diversification, and contribute with cytotaxonomic markers in this group considered one of the most diverse of Loricariidae. Our results evidenced a high karyotypic variability in diploid number (2n) ranging from 2n = 54 (Loricariichthys platymetopon and Loricariichthys anus), 2n = 60 (Rineloricaria reisi and Rineloricaria parva), 2n = 62 (Proloricaria prolixa), 2n = 64 (Loricaria cataphracta complex species), 2n = 66 (Sturisoma barbatum), and 2n = 68 (Pyxiloricaria menezesi). Different patterns of 18S and 5S ribosomal DNA (rDNA) were also identified, while slight divergences in heterochromatin distribution were observed. This high variability is probably related with independent events of Robertsonian translocations, pericentric inversions, and different mechanisms of rDNA sites dispersion (nonreciprocal translocation and transposable element [TEs] co-localization). In addition, our study provides a set of efficient chromosomal markers for the characterization of all analyzed species, and certainly, in future analyzes, will contribute as a useful cytotaxonomic tool in groups where the traditional taxonomy based on morphological data are not sufficient to clarify their relationship.
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Affiliation(s)
- Fábio Hiroshi Takagui
- Animal Cytogenetics Laboratory, Department of General Biology, CCB, Londrina State University, Londrina, Brazil
| | - Lucas Baumgärtner
- Cytogenetic Laboratory, Center for Biological and Health Sciences, Western Paraná State University, Cascavel, Brazil
| | | | - Leonardo Marcel Paiz
- Cytogenetic Laboratory, Center for Biological and Health Sciences, Western Paraná State University, Cascavel, Brazil
| | - Patrik Viana
- Laboratory of Animal Genetics, National Institute of Amazonian Research, Manaus, Brazil
| | - Jaqueline Fernanda Dionísio
- Animal Cytogenetics Laboratory, Department of General Biology, CCB, Londrina State University, Londrina, Brazil
| | - Luis Ricardo Santana Pompeo
- Animal Cytogenetics Laboratory, Department of General Biology, CCB, Londrina State University, Londrina, Brazil
| | - Vladimir Pavan Margarido
- Cytogenetic Laboratory, Center for Biological and Health Sciences, Western Paraná State University, Cascavel, Brazil
| | | | - Renata da Rosa
- Animal Cytogenetics Laboratory, Department of General Biology, CCB, Londrina State University, Londrina, Brazil
| | - Lucia Giuliano-Caetano
- Animal Cytogenetics Laboratory, Department of General Biology, CCB, Londrina State University, Londrina, Brazil
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Ferreira GEDB, Barbosa LM, Prizon-Nakajima AC, de Paiva S, Vieira MMDR, Gallo RB, Borin-Carvalho LA, da Rosa R, wadzki CHZ, dos Santos ICM, Portela-Castro ALDB. Constitutive heterochromatin heteromorphism in the Neotropical armored catfish Hypostomusregani (Ihering, 1905) (Loricariidae, Hypostominae) from the Paraguay River basin (Mato Grosso do Sul, Brazil). Comp Cytogenet 2019; 13:27-39. [PMID: 30788061 PMCID: PMC6379321 DOI: 10.3897/compcytogen.v13i1.30134] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Accepted: 01/09/2019] [Indexed: 06/01/2023]
Abstract
A cytogenetic analysis based on the integration of a number of different chromosomal methodologies, including chromosome microdissection was carried out to characterize the chromosomally polymorphic Hypostomusregani population from the Paraguay River basin, state of Mato Grosso do Sul in Brazil. All specimens had 2n=72 (FN=116) but two distinct karyotype formulas: karyomorph A (12m+14sm+18s+28a) and karyomorph B (13m+14sm+17st+28a). Karyomorph A and B differed only for pair 19 that consisted of two subtelocentrics in karyomorph A and a large metacentric and a subtelocentric in karyomorph B. This heteromorphism was due to extensive heterochromatinization of the short arm of the large metacentric, as highlighted by C-banding. The microdissection of the large metacentric of pair 19 allowed the production of a probe, named HrV (Hypostomusregani Variant), that hybridized to the whole p arm of the large metacentric and the pericentromeric region of the short arm of its (subtelocentric) homologue (karyomorph B) and of both homologs of pair 19 in karyomorph A. Additional cytogenetic techniques (FISH with 18S and 5S rDNA probes, CMA3 and DAPI staining) allowed a finer distinction of the two karyomorphs. These results reinforced the hypothesis that the novel large metacentric of H.regani (karyomorph B) was the result of the amplification of heterochromatin segments, which contributed to karyotypic diversification in this species.
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Affiliation(s)
- Greicy Ellen de Brito Ferreira
- Universidade Estadual de Maringá, Departamento de Biotecnologia, Genética e Biologia Celular, 87020-900 Maringá, Paraná, Brazil
| | - Ligia Magrinelli Barbosa
- Universidade Estadual de Maringá, Departamento de Biotecnologia, Genética e Biologia Celular, 87020-900 Maringá, Paraná, Brazil
| | - Ana Camila Prizon-Nakajima
- Universidade Estadual de Maringá, Departamento de Biotecnologia, Genética e Biologia Celular, 87020-900 Maringá, Paraná, Brazil
| | - Suzana de Paiva
- Universidade Estadual de Maringá, Departamento de Biotecnologia, Genética e Biologia Celular, 87020-900 Maringá, Paraná, Brazil
| | | | - Raquel Bozini Gallo
- Universidade Estadual de Londrina, Departamento de Biologia Geral, 86057-970, Londrina, Paraná, Brazil
| | - Luciana Andreia Borin-Carvalho
- Universidade Estadual de Maringá, Departamento de Biotecnologia, Genética e Biologia Celular, 87020-900 Maringá, Paraná, Brazil
| | - Renata da Rosa
- Universidade Estadual de Londrina, Departamento de Biologia Geral, 86057-970, Londrina, Paraná, Brazil
| | - Cláudio Henrique Z wadzki
- Universidade Estadual de Maringá, Departamento de Biologia/Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura (Nupélia), 87020-900 Maringá, Paraná, Brazil
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Pine MB, Gallo RB, da Silva CRM, Pezenti LF, Domenico FCD, Loreto V, da Rosa R. Chromosome mapping in Abracris flavolineata (De Geer, 1773) (Orthoptera) from the Iguaçu National Park - Foz do Iguaçu, Paraná, Brazil. Comp Cytogenet 2017; 11:203-212. [PMID: 28919959 PMCID: PMC5596987 DOI: 10.3897/compcytogen.v11i2.10282] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Accepted: 02/01/2017] [Indexed: 06/07/2023]
Abstract
In this paper, we present the cytomolecular analysis of a population of Abracris flavolineata collected in the largest fragment of the Brazilian Atlantic forest, the Iguaçu National Park. The diploid number in males was 23 (22+X0), with two large pairs (1-2), 7 medium (3-9), 2 small (10-11) and the X chromosome of medium size. Heterochromatic blocks were evident in the pericentromeric regions of all chromosomes. Heterogeneity in the distribution of heterochromatin was observed, with a predominance of DAPI+ blocks. However, some chromosomes showed CMA3+ blocks and other DAPI+/CMA3+ blocks. The 18S rDNA sites were distributed on the short arms of 5 pairs. In two of these pairs, such sites were in the same chromosome bearing 5S rDNA, and one of the bivalents, they were co-located. Histone H3 genes were found on one bivalent. The results added to the existing cytogenetic studies provided evidence of great karyotypic plasticity in the species. This pliancy may be the result of vicariant events related to the geographical distribution of different populations of A. flavolineata.
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Affiliation(s)
- Mariana Bozina Pine
- Departamento de Biologia Geral, CCB, Universidade Estadual de Londrina (UEL), Londrina, Paraná, Brazil
| | - Raquel Bozini Gallo
- Departamento de Biologia Geral, CCB, Universidade Estadual de Londrina (UEL), Londrina, Paraná, Brazil
| | | | - Larissa Forim Pezenti
- Departamento de Biologia Geral, CCB, Universidade Estadual de Londrina (UEL), Londrina, Paraná, Brazil
| | | | - Vilma Loreto
- Departamento de Genética, CCB, Universidade Federal de Pernambuco, Recife, Brazil
| | - Renata da Rosa
- Departamento de Biologia Geral, CCB, Universidade Estadual de Londrina (UEL), Londrina, Paraná, Brazil
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15
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Takagui FH, Dias AL, Birindelli JLO, Swarça AC, da Rosa R, Lui RL, Fenocchio AS, Giuliano-Caetano L. First report of B chromosomes in three neotropical thorny catfishes (Siluriformes, Doradidae). Comp Cytogenet 2017; 11:55-64. [PMID: 28919949 PMCID: PMC5599706 DOI: 10.3897/compcytogen.v11i1.10496] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Accepted: 11/15/2016] [Indexed: 06/07/2023]
Abstract
The family Doradidae (Siluriformes) is an important group of fishes endemic to freshwater ecosystems in South America. Some cytogenetic studies have been conducted focused on the group; however, there are no reports on the occurrence of B chromosomes for the family. In this paper the chromosomal characteristics of Platydoras armatulus (Valenciennes, 1840), Pterodoras granulosus (Valenciennes, 1821) and Ossancora punctata (Kner, 1855) were investigated through classical cytogenetics approaches. The conventional staining reveals 2n=58 in Platydoras armatulus and Pterodoras granulosus, however with distinct karyotypic formulae, possibly originated by pericentric inversions. In Ossancora punctata a derivate karyotype was described with 2n=66 and predominance of acrocentric chromosomes. The C banding pattern was resolutive in discriminating the three species, being considered an important cytotaxonomic marker. All species showed B chromosomes totally heterochromatic with non-Mendelian segregation during meiosis and low frequencies in mitotic cells. The probably origin of these additional elements was through fragmentations of chromosomes of the standard complement, which occurred recently and independently in these three species. The diploid number observed in Ossancora punctata is an evidence of centric fusions and up to the moment it is the highest diploid number reported for Doradidae.
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Affiliation(s)
- Fábio Hiroshi Takagui
- Laboratory of Animal Cytogenetics; Department of General Biology, CCB, Universidade Estadual de Londrina. Rodovia Celso Garcia Cid, PR 445, km 380, Londrina-Brasil
| | - Ana Lucia Dias
- Laboratory of Animal Cytogenetics; Department of General Biology, CCB, Universidade Estadual de Londrina. Rodovia Celso Garcia Cid, PR 445, km 380, Londrina-Brasil
| | - José Luís Olivan Birindelli
- Museum of Zoology, Department of Animal and Plant Biology, CCB, Universidade Estadual de Londrina. Rodovia Celso Garcia Cid, PR 445, km 380, Londrina-Brasil
| | - Ana Claudia Swarça
- Laboratory of Histology and Genetics; Department of Histology; Center of Biological Sciences (CCB); Universidade Estadual de Londrina (UEL). Londrina-Brasil
| | - Renata da Rosa
- Laboratory of Animal Cytogenetics; Department of General Biology, CCB, Universidade Estadual de Londrina. Rodovia Celso Garcia Cid, PR 445, km 380, Londrina-Brasil
| | - Roberto Laridondo Lui
- Laboratory of Cytogenetics; Center of Biological Sciences and Health: Universidade do Oeste do Paraná, Campus Cascavel. Cascavel - Brasil
| | - Alberto Sergio Fenocchio
- Laboratory of General Cytogenetics; Department of Genetics; Facultad de Ciencias Naturales; Universidad Nacional de Misiones. Posadas- Argentina
| | - Lucia Giuliano-Caetano
- Laboratory of Animal Cytogenetics; Department of General Biology, CCB, Universidade Estadual de Londrina. Rodovia Celso Garcia Cid, PR 445, km 380, Londrina-Brasil
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16
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Gouveia JG, Wolf IR, de Moraes-Manécolo VPO, Bardella VB, Ferracin LM, Giuliano-Caetano L, da Rosa R, Dias AL. Isolation and characterization of 5S rDNA sequences in catfishes genome (Heptapteridae and Pseudopimelodidae): perspectives for rDNA studies in fish by C 0t method. Cytotechnology 2016; 68:2711-2720. [PMID: 27344147 PMCID: PMC5101342 DOI: 10.1007/s10616-016-9996-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2015] [Accepted: 06/10/2016] [Indexed: 10/21/2022] Open
Abstract
Sequences of 5S ribosomal RNA (rRNA) are extensively used in fish cytogenomic studies, once they have a flexible organization at the chromosomal level, showing inter- and intra-specific variation in number and position in karyotypes. Sequences from the genome of Imparfinis schubarti (Heptapteridae) were isolated, aiming to understand the organization of 5S rDNA families in the fish genome. The isolation of 5S rDNA from the genome of I. schubarti was carried out by reassociation kinetics (C0t) and PCR amplification. The obtained sequences were cloned for the construction of a micro-library. The obtained clones were sequenced and hybridized in I. schubarti and Microglanis cottoides (Pseudopimelodidae) for chromosome mapping. An analysis of the sequence alignments with other fish groups was accomplished. Both methods were effective when using 5S rDNA for hybridization in I. schubarti genome. However, the C0t method enabled the use of a complete 5S rRNA gene, which was also successful in the hybridization of M. cottoides. Nevertheless, this gene was obtained only partially by PCR. The hybridization results and sequence analyses showed that intact 5S regions are more appropriate for the probe operation, due to conserved structure and motifs. This study contributes to a better understanding of the organization of multigene families in catfish's genomes.
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Affiliation(s)
- Juceli Gonzalez Gouveia
- Departamento de Biologia Geral, Centro de Ciências Biológicas, CCB, Universidade Estadual de Londrina, P.O Box 6001, Londrina, Paraná, CEP 86051-970, Brazil
| | - Ivan Rodrigo Wolf
- Departamento de Biologia Geral, Centro de Ciências Biológicas, CCB, Universidade Estadual de Londrina, P.O Box 6001, Londrina, Paraná, CEP 86051-970, Brazil
| | | | - Vanessa Belline Bardella
- Departamento de Biologia Geral, Centro de Ciências Biológicas, CCB, Universidade Estadual de Londrina, P.O Box 6001, Londrina, Paraná, CEP 86051-970, Brazil
| | - Lara Munique Ferracin
- Departamento de Biologia Geral, Centro de Ciências Biológicas, CCB, Universidade Estadual de Londrina, P.O Box 6001, Londrina, Paraná, CEP 86051-970, Brazil
| | - Lucia Giuliano-Caetano
- Departamento de Biologia Geral, Centro de Ciências Biológicas, CCB, Universidade Estadual de Londrina, P.O Box 6001, Londrina, Paraná, CEP 86051-970, Brazil
| | - Renata da Rosa
- Departamento de Biologia Geral, Centro de Ciências Biológicas, CCB, Universidade Estadual de Londrina, P.O Box 6001, Londrina, Paraná, CEP 86051-970, Brazil
| | - Ana Lúcia Dias
- Departamento de Biologia Geral, Centro de Ciências Biológicas, CCB, Universidade Estadual de Londrina, P.O Box 6001, Londrina, Paraná, CEP 86051-970, Brazil.
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17
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Rubert M, da Rosa R, Zawadzki CH, Mariotto S, Moreira-Filho O, Giuliano-Caetano L. Chromosome Mapping of 18S Ribosomal RNA Genes in Eleven Hypostomus Species (Siluriformes, Loricariidae): Diversity Analysis of the Sites. Zebrafish 2016; 13:360-8. [PMID: 27192329 DOI: 10.1089/zeb.2016.1279] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
We investigated the chromosomal distribution of 18S ribosomal DNA (rDNA) in different populations of 11 species of Hypostomus collected in important Brazilian basins, namely South Atlantic, Upper Paraná, and Paraguay applying the fluorescence in situ hybridization (FISH). Hypostomus cochliodon, Hypostomus commersoni, Hypostomus hermanni, Hypostomus regani, Hypostomus albopunctatus, Hypostomus paulinus, Hypostomus aff. paulinus, Hypostomus iheringii, and Hypostomus mutucae presented multiple 18S rDNA sites while Hypostomus strigaticeps and Hypostomus nigromaculatus exhibited a single pair of chromosomes with 18S rDNA sites. The studied species presented variations in the number and position of these sites. The results accomplished were similar to those obtained by the analysis of AgNORs, revealing the same interspecific variability. Each species exhibited distinctive patterns of AgNOR and 18S rDNA distribution, which can be considered cytogenetic markers in each species of the genus and help improve the discussions on the phylogeny of the group.
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Affiliation(s)
- Marceléia Rubert
- 1 Laboratório de Biodiversidade Molecular e Conservação, Universidade Federal de São Carlos , São Carlos, Brazil
| | - Renata da Rosa
- 2 Laboratório de Citogenética Animal, Universidade Estadual de Londrina , Londrina, Brazil
| | - Claudio H Zawadzki
- 3 Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura, Universidade Estadual de Maringá , Maringá, Brazil
| | - Sandra Mariotto
- 4 Instituto Federal de Educação Ciência e Tecnologia de Mato Grosso (IFMT) , Cuiabá, Brazil
| | - Orlando Moreira-Filho
- 1 Laboratório de Biodiversidade Molecular e Conservação, Universidade Federal de São Carlos , São Carlos, Brazil
| | - Lucia Giuliano-Caetano
- 2 Laboratório de Citogenética Animal, Universidade Estadual de Londrina , Londrina, Brazil
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Oyanedel D, Gonzalez R, Flores-Herrera P, Brokordt K, Rosa RD, Mercado L, Schmitt P. Molecular characterization of an inhibitor of NF-κB in the scallop Argopecten purpuratus: First insights into its role on antimicrobial peptide regulation in a mollusk. Fish Shellfish Immunol 2016; 52:85-93. [PMID: 26993612 DOI: 10.1016/j.fsi.2016.03.021] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Revised: 03/08/2016] [Accepted: 03/11/2016] [Indexed: 06/05/2023]
Abstract
Inhibitors of nuclear factor kappa B (IκBs) are major control components of the Rel/NF-κB signaling pathway, a key regulator in the modulation of the expression of immune-related genes in vertebrates and invertebrates. The activation of the Rel/NF-κB signaling pathway depends largely in the degradation of IκB proteins and thus, IκBs are a main target for the identification of genes whose expression is controlled by Rel/NF-κB pathway. In order to identify such regulation in bivalve mollusks, the cDNA sequence encoding an IκB protein was characterized in the scallop Argopecten purpuratus, ApIκB. The cDNA sequence of ApIκB is comprised of 1480 nucleotides with a 1086 bp open reading frame encoding for 362 amino acids. Bioinformatics analysis showed that ApIκB displays the conserved features of IκB proteins. The deduced amino acid sequence consists of a 39.7 kDa protein, which has an N-terminal degradation motif, six ankyrin repeats and a C-terminal phosphorylation site motif. Phylogenetic analysis revealed a high degree of identity between ApIκB and other IκBs from mollusks, but also to arthropod cactus proteins and vertebrate IκBs. Tissue expression analysis indicated that ApIκB is expressed in all examined tissues and it is upregulated in circulating hemocytes from scallops challenged with the pathogenic Gram-negative bacterium Vibrio splendidus. After inhibiting ApIκB gene expression using the RNA interference technology, the gene expression of the antimicrobial peptide big defensin was upregulated in hemocytes from non-challenged scallops. Results suggest that ApIκB may control the expression of antimicrobial effectors such as big defensin via a putative Rel/NF-κB signaling pathway. This first evidence will help to deepen the knowledge of the Rel/NF-κB conserved pathway in scallops.
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Affiliation(s)
- D Oyanedel
- Laboratorio de Genética e Inmunología Molecular, Instituto de Biología, Pontificia Universidad Católica de Valparaíso, 2373223 Valparaíso, Chile
| | - R Gonzalez
- Laboratorio de Fisiología y Genética Marina (FIGEMA), Centro de Estudios Avanzados en Zonas Áridas, Universidad Católica Del Norte, 1781421 Coquimbo, Chile
| | - P Flores-Herrera
- Laboratorio de Genética e Inmunología Molecular, Instituto de Biología, Pontificia Universidad Católica de Valparaíso, 2373223 Valparaíso, Chile
| | - K Brokordt
- Laboratorio de Fisiología y Genética Marina (FIGEMA), Centro de Estudios Avanzados en Zonas Áridas, Universidad Católica Del Norte, 1781421 Coquimbo, Chile
| | - R D Rosa
- Laboratory of Immunology Applied to Aquaculture, Department of Cell Biology, Embryology and Genetics, Federal University of Santa Catarina, 88040-900 Florianópolis, SC, Brazil
| | - L Mercado
- Laboratorio de Genética e Inmunología Molecular, Instituto de Biología, Pontificia Universidad Católica de Valparaíso, 2373223 Valparaíso, Chile
| | - P Schmitt
- Laboratorio de Genética e Inmunología Molecular, Instituto de Biología, Pontificia Universidad Católica de Valparaíso, 2373223 Valparaíso, Chile.
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Paula Franco Punhagui A, Rodrigues Vieira H, Eloisa Munhoz De Lion Siervo G, da Rosa R, Scantamburlo Alves Fernandes G. Ethanol exposure during peripubertal period increases the mast cell number and impairs meiotic and spermatic parameters in adult male rats. Microsc Res Tech 2016; 79:541-9. [PMID: 27058992 DOI: 10.1002/jemt.22664] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [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: 09/16/2015] [Revised: 01/26/2016] [Accepted: 03/19/2016] [Indexed: 01/17/2023]
Abstract
Puberty is characterized by psychosomatic alterations, whereas chronic ethanol consumption is associated with morphophysiological changes in the male reproductive system. The purpose of this study was to show the toxic effects on testis and epididymal morphophysiology after ethanol administration during peripuberty. To this end, male Wistar rats were divided into two groups: ethanol (E) group: received a 2 g dose of ethanol/kg in 25% (v/v); and control (C) group: received the same volume of filtered water; both were treated by gavage for 54 days. On the 55th day of the experiment, epididymis, and testis were collected for sperm count, histopathology, mast cell count, and morphometry. The vas deferens was collected for sperm motility analysis. The femur and testicle were used for cytogenetic analysis. Ethanol exposure caused reduction in daily sperm production (DSP) and in sperm motility, multinucleated cells or those having no chromosomal content, and late chromosome migrations. No changes were observed in the number of chromosomes in the mitotic analysis. However, some alterations could be seen in meiocytes at different stages of cell division. Stereological analysis of the epididymis indicated reorganization of its component in the 2A and 5A/B regions. The epididymal cauda had greater recruitment, and both degranulated and full mast cells showed an increase in the initial segment, in the ethanol group. In conclusion, ethanol administration during the pubertal phase affects epididymis and testis in adult rats, as indicated mainly by our new findings related to mast cell number and meiotic impact. Microsc. Res. Tech. 79:541-549, 2016. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Ana Paula Franco Punhagui
- Department of General Biology, Biological Sciences Center, State University of Londrina-UEL, Londrina, Paraná, Brazil
| | - Henrique Rodrigues Vieira
- Department of General Biology, Biological Sciences Center, State University of Londrina-UEL, Londrina, Paraná, Brazil
| | - Gláucia Eloisa Munhoz De Lion Siervo
- Department of General Biology, Biological Sciences Center, State University of Londrina-UEL, Londrina, Paraná, Brazil.,Department of General Pathology, Biological Sciences Center, State University of Londrina-UEL, Londrina, Paraná, Brazil
| | - Renata da Rosa
- Department of General Biology, Biological Sciences Center, State University of Londrina-UEL, Londrina, Paraná, Brazil
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Sampaio TR, Pires LB, Venturelli NB, Usso MC, da Rosa R, Dias AL. Evolutionary trends in the family Curimatidae (Characiformes): inferences from chromosome banding. Comp Cytogenet 2016; 10:77-95. [PMID: 27186339 PMCID: PMC4856927 DOI: 10.3897/compcytogen.v10i1.6316] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Accepted: 11/28/2016] [Indexed: 06/05/2023]
Abstract
The family Curimatidae is a fish group usually considered chromosomally conserved in their diploid number. However, some studies show small changes in the karyotype microstructure, and the presence of B chromosomes, indicating a chromosomal diversification within the group, even if structural changes in the karyotypes are not visible. Few studies associate this trait with an evolutionary pattern within the family. This study aimed to characterize the karyotype, nucleolus organizer regions (NORs), and heterochromatin distribution of six species of Curimatidae of the genera Cyphocharax Fowler, 1906 and Steindachnerina Fowler, 1906: Cyphocharax voga (Hensel, 1870), Cyphocharax spilotus (Vari, 1987), Cyphocharax saladensis (Meinken, 1933), Cyphocharax modestus (Fernández-Yépez, 1948), Steindachnerina biornata (Braga et Azpelicueta, 1987) and Steindachnerina insculpta (Fernández-Yépez, 1948) and contribute data to a better understanding of the mechanisms involved in the chromosomal evolution of this group of fish. All specimens had 2n=54, m-sm, and B microchromosomes. Five species exhibited single NORs, except for Steindachnerina biornata, which showed a multiple pattern of ribosomal sites. NORs were chromomycin A3 positive (CMA3 (+)) and 4'-6-diamino-2-phenylindole (DAPI(-)) negative, exhibiting differences in the pair and chromosomal location of each individual of the species. FISH with 5S rDNA probe revealed sites in the pericentrometic position of a pair of chromosomes of five species. However, another site was detected on a metacentric chromosome of Cyphocharax spilotus. Heterochromatin distributed both in the pericentromeric and some terminal regions was revealed to be CMA3 (+)/DAPI(-). These data associated with the previously existing ones confirm that, although Curimatidae have a very conservative karyotype macrostructure, NORs and heterochromatin variability are caused by mechanisms of chromosome alterations, such as translocations and/or inversions, leading to the evolution and diversification of this group of fish.
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Affiliation(s)
- Tatiane Ramos Sampaio
- Departamento de Biologia Geral, CCB, Universidade Estadual de Londrina, P.O Box 6001, Londrina, Paraná CEP 86051-970, Brazil
| | - Larissa Bettin Pires
- Departamento de Biologia Geral, CCB, Universidade Estadual de Londrina, P.O Box 6001, Londrina, Paraná CEP 86051-970, Brazil
| | - Natália Bortolazzi Venturelli
- Departamento de Biologia Geral, CCB, Universidade Estadual de Londrina, P.O Box 6001, Londrina, Paraná CEP 86051-970, Brazil
| | - Mariana Campaner Usso
- Departamento de Biologia Geral, CCB, Universidade Estadual de Londrina, P.O Box 6001, Londrina, Paraná CEP 86051-970, Brazil
| | - Renata da Rosa
- Departamento de Biologia Geral, CCB, Universidade Estadual de Londrina, P.O Box 6001, Londrina, Paraná CEP 86051-970, Brazil
| | - Ana Lúcia Dias
- Departamento de Biologia Geral, CCB, Universidade Estadual de Londrina, P.O Box 6001, Londrina, Paraná CEP 86051-970, Brazil
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Rocha MDF, Pine MB, Oliveira EFADS, Loreto V, Gallo RB, da Silva CRM, de Domenico FC, da Rosa R. Spreading of heterochromatin and karyotype differentiation in two Tropidacris Scudder, 1869 species (Orthoptera, Romaleidae). Comp Cytogenet 2015; 9:435-450. [PMID: 26312132 PMCID: PMC4547036 DOI: 10.3897/compcytogen.v9i3.5160] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/22/2015] [Accepted: 06/05/2015] [Indexed: 06/04/2023]
Abstract
Tropidacris Scudder, 1869 is a genus widely distributed throughout the Neotropical region where speciation was probably promoted by forest reduction during the glacial and interglacial periods. There are no cytogenetic studies of Tropidacris, and information allowing inference or confirmation of the evolutionary events involved in speciation within the group is insufficient. In this paper, we used cytogenetic markers in two species, Tropidacriscollaris (Stoll, 1813) and Tropidacriscristatagrandis (Thunberg, 1824), collected in different Brazilian biomes. Both species exhibited 2n=24,XX for females and 2n=23,X0 for males. All chromosomes were acrocentric. There were some differences in the karyotype macrostructure, e.g. in the chromosome size. A wide interspecific variation in the chromosome banding (C-banding and CMA3/DAPI staining) indicated strong differences in the distribution of repetitive DNA sequences. Specifically, Tropidacriscristatagrandis had a higher number of bands in relation to Tropidacriscollaris. FISH with 18S rDNA revealed two markings coinciding with the NORs in both species. However, two analyzed samples of Tropidacriscollaris revealed a heterozygous condition for the rDNA site of S10 pair. In Tropidacriscollaris, the histone H3 genes were distributed on three chromosome pairs, whereas in Tropidacriscristatagrandis, these genes were observed on 14 autosomes and on the X chromosome, always in terminal regions. Our results demonstrate that, although the chromosome number and morphology are conserved in the genus, Tropidacriscristatagrandis substantially differs from Tropidacriscollaris in terms of the distribution of repetitive sequences. The devastation and fragmentation of the Brazilian rainforest may have led to isolation between these species, and the spreading of these repetitive sequences could contribute to speciation within the genus.
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Affiliation(s)
| | - Mariana Bozina Pine
- Departamento de Biologia Geral, CCB, Universidade Estadual de Londrina (UEL), Londrina, Paraná, Brazil
| | | | - Vilma Loreto
- Departamento de Genética, CCB, Universidade Federal de Pernambuco, Recife, Pernambuco, Brazil
| | - Raquel Bozini Gallo
- Departamento de Biologia Geral, CCB, Universidade Estadual de Londrina (UEL), Londrina, Paraná, Brazil
| | | | | | - Renata da Rosa
- Departamento de Biologia Geral, CCB, Universidade Estadual de Londrina (UEL), Londrina, Paraná, Brazil
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Sampaio TR, Gouveia JG, da Silva CRM, Dias AL, da Rosa R. Molecular Analysis of the B Microchromosome in Steindachnerina insculpta (Characiformes: Curimatidae) by Microdissection. Cytogenet Genome Res 2015; 146:51-7. [PMID: 25999244 DOI: 10.1159/000381932] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Indexed: 11/19/2022] Open
Abstract
B chromosomes are additional elements to standard karyotypes observed in different species of fishes, especially in Curimatidae. However, despite studies demonstrating the occurrence of Bs, little is known about their origin and evolution. To better understand the genomic composition and evolutionary processes involving B chromosomes, microdissection of B microchromosomes in Steindachnerina insculpta was conducted. Chromosome painting revealed the totally hybridized B and markings on A chromosomes both in S. in sculpta and in Cyphocharax spilotus, demonstrating a strong homology between these different species. In specimens of C. modestus, which do not have Bs, the signals were observed on A chromosomes. Cloning and sequencing of some B fragments revealed that the B microchromosome in S. insculpta is composed of repetitive elements, homologous to the DIRS-4 LTR retrotransposon of Xenopus (Silurana) tropicalis. FISH with clone pSi48 with the DIRS-4 retroelement revealed signals on all A chromosomes in the 2 species and also on the B, suggesting the insertion of repetitive elements in these species.
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Affiliation(s)
- Tatiane R Sampaio
- Departamento de Biologia Geral, CCB, Universidade Estadual de Londrina (UEL), Londrina, Brazil
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da Rosa R, Vicari MR, Dias AL, Giuliano-Caetano L. New Insights into the Biogeographic and Karyotypic Evolution of Hoplias Malabaricus. Zebrafish 2014; 11:198-206. [DOI: 10.1089/zeb.2013.0953] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Renata da Rosa
- Departamento de Biologia Geral—CCB, Universidade Estadual de Londrina, Londrina, Brazil
| | - Marcelo Ricardo Vicari
- Departamento de Biologia Estrutural, Molecular e Genética, Universidade Estadual de Ponta Grossa, Ponta Grossa, Brazil
| | - Ana Lúcia Dias
- Departamento de Biologia Geral—CCB, Universidade Estadual de Londrina, Londrina, Brazil
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Sampaio TR, Pires LB, da Rosa R, Dias AL. Activity patterns of nucleolar organizer region during spermatogenesis of different curimatid species (Characiformes: Curimatidae). Genome 2014; 57:119-24. [DOI: 10.1139/gen-2013-0161] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The nucleolus is an important nuclear structure where transcription of ribosomal DNA (rDNA) takes place. During mitotic division, the nucleolus passes through different processes that inactivate rDNA transcription; in meiosis, its reassembly takes place during telophase II. The objective of this study was to identify the activity patterns and localization of nucleolar organizer regions (NORs) during meiotic division in fish species of the family Curimatidae. For this analysis, the meiotic division in five curimatid species was studied using silver nitrate impregnation, fluorescent in situ hybridization (FISH), and base-specific fluorochrome staining. Silver nitrate staining indicated the presence of a nucleolus in interphase nuclei, one chromosome pair in the spermatogonial metaphases, and one bivalent at the pachytene stage. No Ag-NORs were identified for cells at the diplotene, diakinesis, metaphase I, or metaphase II stages; however, FISH confirmed the presence of Ag-NORs in the nuclei, in spermatogonia, and at the pachytene phase. FISH identified this region during the other stages of meiosis, as did fluorochrome CMA3 staining, which revealed fluorescent marks corresponding to NORs during all stages of meiosis analyzed. The gene activity and localization of this ribosomal sequence during the different stages involved will also be discussed.
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Affiliation(s)
- Tatiane R. Sampaio
- Centro de Ciências Biológicas, Departamento de Biologia Geral, Universidade Estadual de Londrina, 86051-970, Londrina, Paraná, Brazil
| | - Larissa B. Pires
- Centro de Ciências Biológicas, Departamento de Biologia Geral, Universidade Estadual de Londrina, 86051-970, Londrina, Paraná, Brazil
| | - Renata da Rosa
- Centro de Ciências Biológicas, Departamento de Biologia Geral, Universidade Estadual de Londrina, 86051-970, Londrina, Paraná, Brazil
| | - Ana Lúcia Dias
- Centro de Ciências Biológicas, Departamento de Biologia Geral, Universidade Estadual de Londrina, 86051-970, Londrina, Paraná, Brazil
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Gouveia JG, de Moraes VPO, Pires LB, da Rosa R, Dias AL. Comparative cytogenetics between two species of the family Pseudopimelodidae (Siluriformes): occurrence of natural triploidy and supernumerary chromosomes. Cytotechnology 2013; 67:215-22. [PMID: 24363190 DOI: 10.1007/s10616-013-9676-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Accepted: 12/14/2013] [Indexed: 10/25/2022] Open
Abstract
The Pseudopimelodidae family comprises 35 species however, cytogenetic studies have been performed in only six species. This study uncovered karyotypic data on Pseudopimelodus pulcher and Microglanis cottoides. Both species possessed 2n = 54, with 20m + 16sm + 10st + 8a and FN = 100 for P. pulcher and 30m + 14sm + 6st + 4a and FN = 104 for M. cottoides. A female of M. cottoides with 45m + 21sm + 9st + 6a (2n = 81) plus two extra small chromosomes was found, indicating a natural triploidy with supernumerary chromosomes. The formation of the polyploid individual seems to have come from a diploid female gamete, due to the presence of a marker chromosome pair partially heterochromatic presents only in females and common to that exemplar. This triploid female showed three chromosomes with nitrate staining (AgNOR), 18S rDNA probe and chromomycin A3 (CMA3) staining. AgNORs were observed on pairs 12 and 23 in P. pulcher and pair 24 in M. cottoides, results that were confirmed with an 18S rDNA probe and CMA3 fluorochrome. These are the first chromosomal data for P. pulcher and provide the first description of natural triploidy with the presence of supernumerary chromosomes in this family and emphasizing well the chromosomal rearrangements diversification between this species.
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Affiliation(s)
- Juceli Gonzalez Gouveia
- Laboratório de Citogenética Animal, Departamento de Biologia Geral, Centro de Ciências Biológicas (CCB), Universidade Estadual de Londrina, P.O Box 6001, Londrina, Paraná, 86051-970, Brazil
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Rubert M, da Rosa R, Jerep FC, Bertollo LAC, Giuliano-Caetano L. Cytogenetic characterization of four species of the genus Hypostomus Lacépède, 1803 (Siluriformes, Loricariidae) with comments on its chromosomal diversity. Comp Cytogenet 2011; 5:397-410. [PMID: 24260644 PMCID: PMC3833761 DOI: 10.3897/compcytogen.v5i5.1589] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2011] [Accepted: 08/08/2011] [Indexed: 06/01/2023]
Abstract
Cytogenetic analyses were performed on fishes of the genus Hypostomus (Hypostomus ancistroides (Ihering, 1911), Hypostomus strigaticeps (Regan, 1908), Hypostomus regani (Ihering, 1905), and Hypostomus paulinus (Ihering, 1905)) from the seven tributaries of the Paranapanema River Basin (Brazil) by means of different staining techniques (C-, Ag-, CMA3- and DAPI-banding) and fluorescence in situ hybridization (FISH) to detect 18S rDNA sites. All species showed different diploid numbers: 2n=68 (10m+26sm+32st-a) in Hypostomus ancistroides, 2n=72 (10m+16sm+46st-a) in Hypostomus strigaticeps, 2n=72 (10m+18sm+44st-a) in Hypostomus regani and 2n=76 (6m+16sm+54st-a) in Hypostomus paulinus. Ag-staining and FISH revealed various numbers and locations of NORs in the group. NORs were usually located terminally on the subtelocentric/acrocentric chromosomes: on the long arm in Hypostomus strigaticeps (2 to 4) and Hypostomus paulinus (2); and on the short arm in Hypostomus ancistroides (2 to 8) and Hypostomus regani (2 to 4). Conspicuous differences in heterochromatin distribution and composition were found among the species, terminally located in some st-a chromosomes in Hypostomus ancistroides, Hypostomus strigaticeps, and Hypostomus paulinus, and interstitially dispersed in most st-a chromosomes, in Hypostomus regani. The fluorochrome staining indicated that different classes of GC and/or AT-rich repetitive DNA evolved in this group. Our results indicate that chromosomal rearrangements and heterochromatin base-pair composition were significant events during the course of differentiation of this group. These features emerge as an excellent cytotaxonomic marker, providing a better understanding of the evolutionary mechanisms underlying the chromosomal diversity in Hypostomus species.
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Affiliation(s)
- Marceléia Rubert
- Departamento de Genética e Evolução, Universidade Federal de São Carlos, Rodovia Washington Luís, km 235 - SP-310, P.O. Box 676, CEP 13565-905, São Carlos, São Paulo, Brazil
| | - Renata da Rosa
- Departamento de Biologia Geral, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid, Pr 445 Km 380, Campus Universitário, P.O. Box 6001, CEP 86051-970, Londrina, Paraná, Brazil
| | - Fernando Camargo Jerep
- Museu de Ciências e Tecnologia, Pontifícia Universidade Católica, Av. Ipiranga, 6681, P.O. Box 1429, CEP 90619-900, Porto Alegre, Rio Grande do Sul, Brazil
| | - Luiz Antônio Carlos Bertollo
- Departamento de Genética e Evolução, Universidade Federal de São Carlos, Rodovia Washington Luís, km 235 - SP-310, P.O. Box 676, CEP 13565-905, São Carlos, São Paulo, Brazil
| | - Lucia Giuliano-Caetano
- Departamento de Biologia Geral, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid, Pr 445 Km 380, Campus Universitário, P.O. Box 6001, CEP 86051-970, Londrina, Paraná, Brazil
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Pacheco RB, da Rosa R, Giuliano-Caetano L, Júlio Jr. HF, Dias AL. Cytogenetic comparison between two allopatric populations of Astyanax altiparanae Garutti et Britski, 2000 (Teleostei, Characidae), with emphasis on the localization of 18S and 5S rDNA. Comp Cytogenet 2011; 5:237-246. [PMID: 24260632 PMCID: PMC3833779 DOI: 10.3897/compcytogen.v5i3.1235] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2011] [Accepted: 07/07/2011] [Indexed: 06/02/2023]
Abstract
Two populations of Astyanax altiparanae (Garutti & Britski, 2000) of the Água dos Patos stream/SP and lake Igapó/PR were analyzed. All individuals showed 2n = 50, however, different karyotypic formulae were observed. The population of the Água dos Patos stream showed 8m +24sm+6st+12a (NF=88) and the population of lake Igapó, 8m+28sm+4st+10a (NF=90). Nucleolus organizing regions (AgNORs) were observed in the terminal position on the short and long arm of different chromosomes of both populations, showing a variation from 3 to 4 chromosomes. Fluorescent in situ hybridization (FISH) using 18S rDNA probes revealed only one pair of chromosomes with fluorescent signals in the terminal site on the short arm in the Igapó lake population, while the population of Água dos Patos stream showed 4 fluorescence terminal signals, characterizing a system of simple and multiple NORs, respectively. 5S rDNA fluorescent signals were detected in the interstitial position of a pair of chromosomes in the two studied populations. Some AgNOR sites revealed to be GC-rich when stained with Chromomycin A3 (CMA3), however, AT positive regions were not observed. The data obtained show that, despite the conservation of the diploid number and location of 5S DNAr, differences in both the distribution of 18S rDNA and karyotypic formula among the populations were found, thus corroborating the existing data on chromosome variability in Astyanax altiparanae that can be significant for cytotaxonomy in this group.
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Affiliation(s)
- Rosiley Berton Pacheco
- Departamento de Biologia Geral, CCB, Universidade Estadual de Londrina, Londrina, PR, Brazil
| | - Renata da Rosa
- Departamento de Biologia Geral, CCB, Universidade Estadual de Londrina, Londrina, PR, Brazil
| | - Lucia Giuliano-Caetano
- Departamento de Biologia Geral, CCB, Universidade Estadual de Londrina, Londrina, PR, Brazil
| | | | - Ana Lúcia Dias
- Departamento de Biologia Geral, CCB, Universidade Estadual de Londrina, Londrina, PR, Brazil
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Rosa RD, Rubert M, Malabarba LR, Martins-Santos IC, Giuliano-Caetano L. Cytogenetic analysis of Astyanax laticeps (Cope, 1894) (Ostariophysi: Characidae) from the laguna dos Patos system. Neotrop ichthyol 2009. [DOI: 10.1590/s1679-62252009000400007] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The genus Astyanax is prominent among Characiformes, due to the large number of species found and its wide geographic distribution. In this work, Astyanax laticeps specimens from the laguna dos Patos system were cytogenetically analyzed. A diploid number of 2n = 50 chromosomes distributed into 6m+16sm+16st+12a (FN = 88) was found, without differences between males and females. A few small heterochromatin blocks were observed, besides three more conspicuous C-bands, corresponding to NORs, as confirmed by silver nitrate and CMA3 staining, FISH, and DAPI negative staining. These regions were located in a medium-sized subtelocentric and in a large subtelocentric chromosomal pair, probably because of a deletion of this region in one homologous chromosome, or due to a transposition event between them.
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Affiliation(s)
- Renata da Rosa
- Universidade Estadual de Maringá, Brazil; Universidade Estadual de Londrina, Brazil
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da Rosa R, Bellafronte E, Moreira Filho O, Margarido VP. Constitutive heterochromatin, 5S and 18S rDNA genes in Apareiodon sp. (Characiformes, Parodontidae) with a ZZ/ZW sex chromosome system. Genetica 2006; 128:159-66. [PMID: 17028948 DOI: 10.1007/s10709-005-5700-1] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2005] [Accepted: 12/03/2005] [Indexed: 11/25/2022]
Abstract
Karyotype, sex chromosome system and cytogenetics characteristics of an unidentified species of the genus Apareiodon originating from Piquiri River (Paraná State, Brazil) were investigated using differential staining techniques (C-banding and Ag-staining) and fluorescent in situ hybridization (FISH) with 5S and 18S rDNA probes. The diploid chromosome number was 2n = 54 with 25 pairs of meta- (m) to submetacentric (sm) and 2 pairs of subtelocentric (st) chromosomes. The major ribosomal rDNA sites as revealed by Ag-staining and FISH with 18S rDNA probe were found in distal region of longer arm of st chromosome pair 26, while minor 5S sites were observed in the interstitial sites on chromosome pairs 2 (smaller cluster) and 7 (larger one). The C-positive heterochromatin had pericentromeric and telomeric distribution. The heteromorphic sex chromosome system consisted of male ZZ (pair 21) and female middle-sized m/st Z/W chromosomes. The pericentric inversion of heterochromatinized short arm of ancestral Z followed by multiplication of heterochromatin segments is hypothesized for origin of W chromosome. The observed karyotype and chromosomal markers corresponded to those found in other species of the genus.
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Affiliation(s)
- Renata da Rosa
- Centro de Ciências Biológicas, Departamento de Biologia Geral, Universidade Estadual de Londrina, 86051-990, Londrina, PR, Brazil
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Barone F, Rosa RD, Fiore LD, Fusco F, Grado A, Milano L, Russo G. Real-time digital control of optical interferometers by the mechanical-modulation technique. Appl Opt 1994; 33:7846-7856. [PMID: 20962998 DOI: 10.1364/ao.33.007846] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
We discuss the application of digital systems to the automatic control of dual-wave optical interferometers. We show that, if the mechanical-modulation technique is used for error-signal extraction, digital techniques can be used both for error-signal extraction and for control-signal generation. Therefore, apart from two front/end amplifiers that are necessary to match the dynamics of the detectors and actuators to the dynamics of the analog-to-digital converters and digital-to-analog converters, no other analog devices are required. In particular, the mechanical-modulation technique requires the synchronous demodulation of the photodiode output signal. Hence we need to implement a digital lock-in amplifier whose algorithm is described here. Finally, we describe one of the possible applications of this digital control procedure, such as the control of a classic Mach-Zehnder interferometer in air.
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Barone F, Calloni E, Rosa RD, Fiore LD, Fusco F, Milano L, Russo G. Fringe-counting technique used to lock a suspended interferometer. Appl Opt 1994; 33:1194-1197. [PMID: 20862137 DOI: 10.1364/ao.33.001194] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
We implement a digital fringe-counting technique to measure in real time the relative mirror displacement of a suspended Michelson interferometer with modulated optical path length for oscillations much larger than the laser wavelength (λ). This provides the proper error signal for a servo mechanism that reduces the relative displacement within λ/2. The implemented technique does not require extra optics or polarizers and thus can be used for interferometric gravitational wave detectors as a starting procedure to get the system locked.
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Rosa RD, Daehnick WW, Saha SK, Li PC. beta - gamma angular correlations in 20Na and 20F beta decay. Phys Rev C Nucl Phys 1988; 37:2722-2732. [PMID: 9954749 DOI: 10.1103/physrevc.37.2722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Daehnick WW, Dytman SA, Rosa RD, Brown JD, Foster CC, Jacobs WW, Comfort JR. sup18O(p. Phys Rev C Nucl Phys 1986; 34:375-379. [PMID: 9953468 DOI: 10.1103/physrevc.34.375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Daehnick WW, Dytman SA, Rosa RD, Brown JD, Foster CC, Jacobs WW, Comfort JR. 17O(p. Phys Rev C Nucl Phys 1985; 32:1465-1473. [PMID: 9953002 DOI: 10.1103/physrevc.32.1465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Daehnick WW, Rosa RD. Weak branches in 42Sc, 35Ar, and 27Si beta + decay. Phys Rev C Nucl Phys 1985; 31:1499-1504. [PMID: 9952672 DOI: 10.1103/physrevc.31.1499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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