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Dettleff P, Toloza C, Fuentes M, Aedo J, Zuloaga R, Estrada JM, Molina A, Valdés JA. Gills de novo assembly reveals oxidative stress, unfolded protein, and immune response on red cusk-eel (Genypterus chilensis) under thermal stress. MARINE ENVIRONMENTAL RESEARCH 2024; 196:106440. [PMID: 38479297 DOI: 10.1016/j.marenvres.2024.106440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 02/18/2024] [Accepted: 03/07/2024] [Indexed: 03/23/2024]
Abstract
The heat waves on the South Pacific coast could lead to thermal stress in native fish. The red cusk-eel (Genypterus chilensis) is relevant for Chilean artisanal fisheries and aquaculture diversification. This study examined the effect of high-temperature stress in the gills of G. chilensis in control (14 °C) and high-temperature stress (19 °C) conditions. High-temperature stress induces a significant increase in gills cortisol levels. Additionally, oxidative damage was observed in gills (protein carbonylation and lipoperoxidation). RNA-seq data was used to build the first transcriptome assembly of gills in this species (23,656 annotated transcripts). A total of 1138 down-regulated and 1531 up-regulated transcripts were observed in response to high-temperature stress in gills. The enrichment analysis showed immune response and replication enriched processes (on down-regulated transcripts), and processes related to the folding of proteins, endoplasmic reticulum, and transporter activity (on up-regulated transcripts). The present study showed how gills could be affected by high-temperature stress.
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Affiliation(s)
- Phillip Dettleff
- Escuela de Medicina Veterinaria, Facultad de Agronomía y Sistemas Naturales, Facultad de Ciencias Biológicas y Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, 7820436, Chile.
| | - Carla Toloza
- Facultad de Ciencias de la Vida, Universidad Andrés Bello, Santiago, 8370186, Chile
| | - Marcia Fuentes
- Facultad de Ciencias de la Vida, Universidad Andrés Bello, Santiago, 8370186, Chile; Interdisciplinary Center for Aquaculture Research (INCAR), Concepción, 4030000, Chile
| | - Jorge Aedo
- Departamento de Biología y Química, Facultad de Ciencias Básicas, Universidad Católica del Maule, Talca, 3466706, Chile
| | - Rodrigo Zuloaga
- Facultad de Ciencias de la Vida, Universidad Andrés Bello, Santiago, 8370186, Chile; Interdisciplinary Center for Aquaculture Research (INCAR), Concepción, 4030000, Chile
| | - Juan Manuel Estrada
- Centro de Investigación Marina Quintay (CIMARQ), Universidad Andrés Bello, Quintay, 2340000, Chile
| | - Alfredo Molina
- Facultad de Ciencias de la Vida, Universidad Andrés Bello, Santiago, 8370186, Chile; Interdisciplinary Center for Aquaculture Research (INCAR), Concepción, 4030000, Chile
| | - Juan Antonio Valdés
- Facultad de Ciencias de la Vida, Universidad Andrés Bello, Santiago, 8370186, Chile; Interdisciplinary Center for Aquaculture Research (INCAR), Concepción, 4030000, Chile.
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Guerrero-Tortolero DA, Vázquez-Islas G, Campos-Ramos R. A Transcriptome Insight During Early Fish Larval Development Followed by Starvation in Seriola rivoliana. MARINE BIOTECHNOLOGY (NEW YORK, N.Y.) 2021; 23:749-765. [PMID: 34647196 DOI: 10.1007/s10126-021-10061-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Accepted: 08/17/2021] [Indexed: 06/13/2023]
Abstract
We investigated a time-course larval transcriptional analysis (RNA-seq) in the longfin yellowtail Seriola rivoliana, from hatching to day four at 22 °C, without providing zooplankton as food. Larval starvation is a critical physiological stage that must be prevented to ensure survival. However, the transcriptional mechanisms to endure starvation have not been investigated in marine fish. Differential gene expression showed newly day-specific transcriptome events during larval development. On day 1 (yolk sac absorption), the predominant upregulated developmental processes were larval growth, muscle and vision development, cytoskeletal structure, protein synthesis, protein and fat digestion-absorption, and hormone biosynthesis, whereas the cell cycle was suppressed. On day 2 (yolk sac exhaustion), a new stage of energy regeneration (ATP) was supplied by the oil drop reserve, whereas protein digestion-absorption and growth were suppressed. On day 3 (mouth opening and starvation), stress signals and nutrition deprivation upregulated the p53 signal and triggered autophagy and the AMP-activated protein kinase (AMPK) pathways as an alternative catabolic pathway to enduring starvation, and the circadian rhythm was established. On day 4 (starving and weakened larvae condition), autophagy supported subsequent protein synthesis, activated the immune system, and promoted estrogen signaling and skeleton renovation. However, larvae suppressed muscle development, vision and carbohydrate, and fat digestion-absorption and became lethargic, evidencing limited physiological support by autophagy to maintain survival without exogenous nutrition in this species.
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Affiliation(s)
| | - Grecia Vázquez-Islas
- Centro de Investigaciones Biológicas del Noroeste (CIBNOR), Calle IPN 195, 23096, La Paz, B.C.S, Mexico
| | - Rafael Campos-Ramos
- Centro de Investigaciones Biológicas del Noroeste (CIBNOR), Calle IPN 195, 23096, La Paz, B.C.S, Mexico.
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Ai Q, Sang L, Tan H, Huang X, Bao B, Li C. Genetic and morphological differences between yellowtail kingfish (Seriola lalandi) from the Bohai Sea, China and the Southern Ocean, Australia. AQUACULTURE AND FISHERIES 2021. [DOI: 10.1016/j.aaf.2020.03.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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González P, Dettleff P, Valenzuela C, Estrada JM, Valdés JA, Meneses C, Molina A. Evaluating the genetic structure of wild and commercial red cusk-eel (Genypterus chilensis) populations through the development of novel microsatellite markers from a reference transcriptome. Mol Biol Rep 2019; 46:5875-5882. [PMID: 31598817 DOI: 10.1007/s11033-019-05021-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Accepted: 08/03/2019] [Indexed: 11/30/2022]
Abstract
The red cusk-eel (Genypterus chilensis) is a native Chilean species with a high-value market, with the potential to diversify Chilean aquaculture. The objective of this study was to develop a set of microsatellite markers, estimate genetic parameters, determine population differentiation, and identify the population structure of wild and commercial populations of G. chilensis. We discovered 6427 microsatellites markers from RNA-seq data, of which 54.9%, 20.2% and 16.8% were di-, tri-, and tetranucleotides, respectively. We used 12 of these markers to genotype two sets of broodstock, one group from commercial fish, and one group from wild fish from the Coquimbo Region of G. chilensis. We estimate the genetic parameters of the markers, selecting ten polymorphic markers (PIC > 0.5). We observed differences in the inbreeding coefficient among populations, with high values of inbreeding in one broodstock set and lower values in the other groups. The evaluation of population differentiation using Fst showed small (0.0195) to large (0.1888) genetic differentiation between the groups. The structure analysis showed that commercial and wild groups were formed by three clusters, without relevant evidence of admixture process, suggesting that groups evaluated in this study are formed of at least three subpopulations of G. chilensis, which could be explained by the low or lack of migration suggested for this species. This is the first study that identifies a high number of molecular markers in G. chilensis, providing relevant information of the genetic structure of commercial and wild population of this species.
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Affiliation(s)
- Pamela González
- Facultad de Ciencias de la Vida, Universidad Andrés Bello, República 440, Santiago, Chile
- Interdisciplinary Center for Aquaculture Research (INCAR), Víctor Lamas 1290, PO Box 160-C, Concepción, Chile
| | - Phillip Dettleff
- Facultad de Ciencias de la Vida, Universidad Andrés Bello, República 440, Santiago, Chile
- Interdisciplinary Center for Aquaculture Research (INCAR), Víctor Lamas 1290, PO Box 160-C, Concepción, Chile
| | - Cristián Valenzuela
- Facultad de Ciencias de la Vida, Universidad Andrés Bello, República 440, Santiago, Chile
- Interdisciplinary Center for Aquaculture Research (INCAR), Víctor Lamas 1290, PO Box 160-C, Concepción, Chile
| | - Juan Manuel Estrada
- Centro de Investigación Marina Quintay (CIMARQ), Universidad Andrés Bello, Quintay, Chile
| | - Juan Antonio Valdés
- Facultad de Ciencias de la Vida, Universidad Andrés Bello, República 440, Santiago, Chile
- Interdisciplinary Center for Aquaculture Research (INCAR), Víctor Lamas 1290, PO Box 160-C, Concepción, Chile
| | - Claudio Meneses
- Centro de Biotecnología Vegetal, Universidad Andrés Bello, Santiago, Chile
- FONDAP Center for Genome Regulation, Universidad Andrés Bello, Santiago, Chile
| | - Alfredo Molina
- Facultad de Ciencias de la Vida, Universidad Andrés Bello, República 440, Santiago, Chile.
- Interdisciplinary Center for Aquaculture Research (INCAR), Víctor Lamas 1290, PO Box 160-C, Concepción, Chile.
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Escobar-Aguirre S, Arancibia D, Escorza A, Bravo C, Andrés ME, Zamorano P, Martínez V. Development of a Bicistronic Vector for the Expression of a CRISPR/Cas9-mCherry System in Fish Cell Lines. Cells 2019; 8:E75. [PMID: 30669572 PMCID: PMC6357165 DOI: 10.3390/cells8010075] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 01/14/2019] [Accepted: 01/16/2019] [Indexed: 12/26/2022] Open
Abstract
The clustered regularly interspaced short palindromic repeats/CRISPR-associated protein 9 (CRISPR/Cas9) system has been widely used in animals as an efficient genome editing tool. In fish cells, the technique has been difficult to implement due to the lack of proper vectors that use active promoters to drive the expression of both small guide RNA (sgRNA) and the S. pyogenes Cas9 (spCas9) protein within a single expression platform. Until now, fish cells have been modified using co-transfection of the mRNA of both the sgRNA and the spCas9. In the present study, we describe the optimization of a new vector for the expression of a CRISPR/Cas9 system, designed to edit the genome of fish cell lines, that combines a gene reporter (mCherry), sgRNA, and spCas9 in a single vector, facilitating the study of the efficiency of piscine and non-piscine promoters. A cassette containing the zebrafish U6 RNA III polymerase (U6ZF) promoter was used for the expression of the sgRNA. The new plasmid displayed the expression of spCas9, mCherry, and sgRNA in CHSE/F fish cells. The results demonstrate the functionality of the mammalian promoter and the U6ZF promoter in fish cell lines. This is the first approach aimed at developing a unified genome editing system in fish cells using bicistronic vectors, thus creating a powerful biotechnological platform to study gene function.
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Affiliation(s)
- Sebastian Escobar-Aguirre
- FAVET-INBIOGEN, Facultad de Ciencias Veterinarias y Pecuarias, Universidad de Chile, Avda. Santa Rosa, 11735 Santiago, Chile.
| | - Duxan Arancibia
- Department of Cellular and Molecular Biology, Faculty of Biological Sciences, Pontificia Universidad Católica de Chile, 7520245 Santiago, Chile.
| | - Amanda Escorza
- Department of Cellular and Molecular Biology, Faculty of Biological Sciences, Pontificia Universidad Católica de Chile, 7520245 Santiago, Chile.
| | - Cristián Bravo
- FAVET-INBIOGEN, Facultad de Ciencias Veterinarias y Pecuarias, Universidad de Chile, Avda. Santa Rosa, 11735 Santiago, Chile.
| | - María Estela Andrés
- Department of Cellular and Molecular Biology, Faculty of Biological Sciences, Pontificia Universidad Católica de Chile, 7520245 Santiago, Chile.
| | - Pedro Zamorano
- Departamento Biomédico, Facultad de Ciencias de la Salud; Instituto Antofagasta, Universidad de Antofagasta, Avenida Angamos 601, 1240000 Antofagasta, Chile.
| | - Víctor Martínez
- FAVET-INBIOGEN, Facultad de Ciencias Veterinarias y Pecuarias, Universidad de Chile, Avda. Santa Rosa, 11735 Santiago, Chile.
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Sarropoulou E, Sundaram AYM, Kaitetzidou E, Kotoulas G, Gilfillan GD, Papandroulakis N, Mylonas CC, Magoulas A. Full genome survey and dynamics of gene expression in the greater amberjack Seriola dumerili. Gigascience 2018; 6:1-13. [PMID: 29126158 PMCID: PMC5751066 DOI: 10.1093/gigascience/gix108] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Accepted: 11/02/2017] [Indexed: 02/05/2023] Open
Abstract
Background Teleosts of the genus Seriola, commonly known as amberjacks, are of high commercial value in international markets due to their flesh quality and worldwide distribution. The Seriola species of interest to Mediterranean aquaculture is the greater amberjack (Seriola dumerili). This species holds great potential for the aquaculture industry, but in captivity, reproduction has proved to be challenging, and observed growth dysfunction hinders their domestication. Insights into molecular mechanisms may contribute to a better understanding of traits like growth and sex, but investigations to unravel the molecular background of amberjacks have begun only recently. Findings Illumina HiSeq sequencing generated a high-coverage greater amberjack genome sequence comprising 45 909 scaffolds. Comparative mapping to the Japanese yellowtail (Seriola quinqueriadiata) and to the model species medaka (Oryzias latipes) allowed the generation of in silico groups. Additional gonad transcriptome sequencing identified sex-biased transcripts, including known sex-determining and differentiation genes. Investigation of the muscle transcriptome of slow-growing individuals showed that transcripts involved in oxygen and gas transport were differentially expressed compared with fast/normal-growing individuals. On the other hand, transcripts involved in muscle functions were found to be enriched in fast/normal-growing individuals. Conclusion The present study provides the first insights into the molecular background of male and female amberjacks and of fast- and slow-growing fish. Therefore, valuable molecular resources have been generated in the form of a first draft genome and a reference transcriptome. Sex-biased genes, which may also have roles in sex determination or differentiation, and genes that may be responsible for slow growth are suggested.
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Affiliation(s)
- Elena Sarropoulou
- Institute of Marine Biology, Biotechnology and Aquaculture Hellenic Centre for Marine Research Crete, Thalassocosmos, Gournes Pediados, P.O.Box 2214, 71003 Heraklion Crete, Greece
| | - Arvind Y M Sundaram
- Norwegian High Throughput Sequencing Centre, Department of Medical Genetics, Oslo University Hospital (Ullevål), Kirkeveien 166 0450, Oslo, Norway
| | - Elisavet Kaitetzidou
- Institute of Marine Biology, Biotechnology and Aquaculture Hellenic Centre for Marine Research Crete, Thalassocosmos, Gournes Pediados, P.O.Box 2214, 71003 Heraklion Crete, Greece
| | - Georgios Kotoulas
- Institute of Marine Biology, Biotechnology and Aquaculture Hellenic Centre for Marine Research Crete, Thalassocosmos, Gournes Pediados, P.O.Box 2214, 71003 Heraklion Crete, Greece
| | - Gregor D Gilfillan
- Norwegian High Throughput Sequencing Centre, Department of Medical Genetics, Oslo University Hospital (Ullevål), Kirkeveien 166 0450, Oslo, Norway
| | - Nikos Papandroulakis
- Institute of Marine Biology, Biotechnology and Aquaculture Hellenic Centre for Marine Research Crete, Thalassocosmos, Gournes Pediados, P.O.Box 2214, 71003 Heraklion Crete, Greece
| | - Constantinos C Mylonas
- Institute of Marine Biology, Biotechnology and Aquaculture Hellenic Centre for Marine Research Crete, Thalassocosmos, Gournes Pediados, P.O.Box 2214, 71003 Heraklion Crete, Greece
| | - Antonios Magoulas
- Institute of Marine Biology, Biotechnology and Aquaculture Hellenic Centre for Marine Research Crete, Thalassocosmos, Gournes Pediados, P.O.Box 2214, 71003 Heraklion Crete, Greece
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Anderson K, Kuo CY, Lu MW, Bar I, Elizur A. A transcriptomic investigation of digestive processes in orange-spotted grouper, Epinephelus coioides, before, during, and after metamorphic development. Gene 2018; 661:95-108. [DOI: 10.1016/j.gene.2018.03.073] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 03/21/2018] [Indexed: 11/26/2022]
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Nguyen NH, Rastas PMA, Premachandra HKA, Knibb W. First High-Density Linkage Map and Single Nucleotide Polymorphisms Significantly Associated With Traits of Economic Importance in Yellowtail Kingfish Seriola lalandi. Front Genet 2018; 9:127. [PMID: 29719550 PMCID: PMC5914296 DOI: 10.3389/fgene.2018.00127] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Accepted: 03/29/2018] [Indexed: 01/09/2023] Open
Abstract
The genetic resources available for the commercially important fish species Yellowtail kingfish (YTK) (Seriola lalandi) are relative sparse. To overcome this, we aimed (1) to develop a linkage map for this species, and (2) to identify markers/variants associated with economically important traits in kingfish (with an emphasis on body weight). Genetic and genomic analyses were conducted using 13,898 single nucleotide polymorphisms (SNPs) generated from a new high-throughput genotyping by sequencing platform, Diversity Arrays Technology (DArTseqTM) in a pedigreed population comprising 752 animals. The linkage analysis enabled to map about 4,000 markers to 24 linkage groups (LGs), with an average density of 3.4 SNPs per cM. The linkage map was integrated into a genome-wide association study (GWAS) and identified six variants/SNPs associated with body weight (P < 5e-8) when a multi-locus mixed model was used. Two out of the six significant markers were mapped to LGs 17 and 23, and collectively they explained 5.8% of the total genetic variance. It is concluded that the newly developed linkage map and the significantly associated markers with body weight provide fundamental information to characterize genetic architecture of growth-related traits in this population of YTK S. lalandi.
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Affiliation(s)
- Nguyen H Nguyen
- GeneCology Research Centre, Faculty of Science, Health, Education and Engineering, University of the Sunshine Coast, Sunshine Coast, QLD, Australia
| | - Pasi M A Rastas
- Department of Biosciences, Faculty of Science, University of Helsinki, Helsinki, Finland
| | - H K A Premachandra
- GeneCology Research Centre, Faculty of Science, Health, Education and Engineering, University of the Sunshine Coast, Sunshine Coast, QLD, Australia
| | - Wayne Knibb
- GeneCology Research Centre, Faculty of Science, Health, Education and Engineering, University of the Sunshine Coast, Sunshine Coast, QLD, Australia
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Palomino J, Herrera G, Torres-Fuentes J, Dettleff P, Patel A, Martínez V. Assessment of cathepsin mRNA expression and enzymatic activity during early embryonic development in the yellowtail kingfish Seriola lalandi. Anim Reprod Sci 2017; 180:23-29. [PMID: 28262464 DOI: 10.1016/j.anireprosci.2017.02.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Revised: 01/09/2017] [Accepted: 02/19/2017] [Indexed: 12/14/2022]
Abstract
In pelagic species such as Seriola lalandi, survival of both the eggs and embryos depends on yolk processing during oocyte maturation and embryo development. The main enzymes involved in these processes are the cathepsins, which are essential for the hydration process, acquiring buoyancy and nutrition of the embryo before hatching. This study aimed to investigate the mRNA expression profiles of cathepsins B, D and L (catb, catd and catl) and the activity of these enzymes during early development in S. lalandi. We included previtellogenic oocytes (PO). All three enzymes were highly expressed in PO, but the expression was reduced throughout development. Between PO and recently spawned eggs (E1) the transcript to catb and catd decreased, unlike catl. Cathepsin B activity, showed stable levels between PO until blastula stage (E4). High activities levels of cathepsins D and L were observed in E1 in comparison with later developmental stages. Cathepsin L activity remained constant until E1, consistent with observations in other pelagic spawners, where its participation in a second protolithic cleavage of the yolk proteins, has been proposed for this enzyme. Their profiles of both mRNA expression and enzymatic activity indicate the importance of these enzymes during early development and suggest different roles in egg yolk processing for the hydration process and nutrition in early embryos in this species.
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Affiliation(s)
- Jaime Palomino
- FAVET-INBIOGEN, Faculty of Veterinary Sciences, University of Chile, Avda. Santa Rosa 11735, Casilla 2 Correo 15, Santiago, Chile; Animal Reproduction Laboratory, Faculty of Veterinary Sciences, University of Chile, Avda. Santa Rosa 11735, Casilla 2 Correo 15, Santiago, Chile
| | - Giannina Herrera
- FAVET-INBIOGEN, Faculty of Veterinary Sciences, University of Chile, Avda. Santa Rosa 11735, Casilla 2 Correo 15, Santiago, Chile; Animal Reproduction Laboratory, Faculty of Veterinary Sciences, University of Chile, Avda. Santa Rosa 11735, Casilla 2 Correo 15, Santiago, Chile
| | - Jorge Torres-Fuentes
- Animal Reproduction Laboratory, Faculty of Veterinary Sciences, University of Chile, Avda. Santa Rosa 11735, Casilla 2 Correo 15, Santiago, Chile
| | - Phillip Dettleff
- FAVET-INBIOGEN, Faculty of Veterinary Sciences, University of Chile, Avda. Santa Rosa 11735, Casilla 2 Correo 15, Santiago, Chile
| | - Alok Patel
- FAVET-INBIOGEN, Faculty of Veterinary Sciences, University of Chile, Avda. Santa Rosa 11735, Casilla 2 Correo 15, Santiago, Chile
| | - Víctor Martínez
- FAVET-INBIOGEN, Faculty of Veterinary Sciences, University of Chile, Avda. Santa Rosa 11735, Casilla 2 Correo 15, Santiago, Chile.
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Gaitán-Espitia JD, Sánchez R, Bruning P, Cárdenas L. Functional insights into the testis transcriptome of the edible sea urchin Loxechinus albus. Sci Rep 2016; 6:36516. [PMID: 27805042 PMCID: PMC5090362 DOI: 10.1038/srep36516] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Accepted: 10/13/2016] [Indexed: 11/21/2022] Open
Abstract
The edible sea urchin Loxechinus albus (Molina, 1782) is a keystone species in the littoral benthic systems of the Pacific coast of South America. The international demand for high-quality gonads of this echinoderm has led to an extensive exploitation and decline of its natural populations. Consequently, a more thorough understanding of L. albus gonad development and gametogenesis could provide valuable resources for aquaculture applications, management, conservation and studies about the evolution of functional and structural pathways that underlie the reproductive toolkit of marine invertebrates. Using a high-throughput sequencing technology, we explored the male gonad transcriptome of this highly fecund sea urchin. Through a de novo assembly approach we obtained 42,530 transcripts of which 15,544 (36.6%) had significant alignments to known proteins in public databases. From these transcripts, approximately 73% were functionally annotated allowing the identification of several candidate genes that are likely to play a central role in developmental processes, nutrient reservoir activity, sexual reproduction, gamete generation, meiosis, sex differentiation, sperm motility, male courtship behavior and fertilization. Additionally, comparisons with the male gonad transcriptomes of other echinoderms revealed several conserved orthologous genes, suggesting that similar functional and structural pathways underlie the reproductive development in this group and other marine invertebrates.
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Affiliation(s)
- Juan Diego Gaitán-Espitia
- Instituto de Ciencias Ambientales y Evolutivas, Universidad Austral de Chile, Casilla 567 Valdivia, Chile
- CSIRO Oceans & Atmosphere, GPO Box 1538, Hobart 7001, TAS, Australia
| | - Roland Sánchez
- Instituto de Ciencias Ambientales y Evolutivas, Universidad Austral de Chile, Casilla 567 Valdivia, Chile
| | - Paulina Bruning
- Instituto de Ciencias Ambientales y Evolutivas, Universidad Austral de Chile, Casilla 567 Valdivia, Chile
| | - Leyla Cárdenas
- Instituto de Ciencias Ambientales y Evolutivas, Universidad Austral de Chile, Casilla 567 Valdivia, Chile
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Ahi EP. Signalling pathways in trophic skeletal development and morphogenesis: Insights from studies on teleost fish. Dev Biol 2016; 420:11-31. [PMID: 27713057 DOI: 10.1016/j.ydbio.2016.10.003] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2016] [Revised: 10/02/2016] [Accepted: 10/03/2016] [Indexed: 12/12/2022]
Abstract
During the development of the vertebrate feeding apparatus, a variety of complicated cellular and molecular processes participate in the formation and integration of individual skeletal elements. The molecular mechanisms regulating the formation of skeletal primordia and their development into specific morphological structures are tightly controlled by a set of interconnected signalling pathways. Some of these pathways, such as Bmp, Hedgehog, Notch and Wnt, are long known for their pivotal roles in craniofacial skeletogenesis. Studies addressing the functional details of their components and downstream targets, the mechanisms of their interactions with other signals as well as their potential roles in adaptive morphological divergence, are currently attracting considerable attention. An increasing number of signalling pathways that had previously been described in different biological contexts have been shown to be important in the regulation of jaw skeletal development and morphogenesis. In this review, I provide an overview of signalling pathways involved in trophic skeletogenesis emphasizing studies of the most species-rich group of vertebrates, the teleost fish, which through their evolutionary history have undergone repeated episodes of spectacular trophic diversification.
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Affiliation(s)
- Ehsan Pashay Ahi
- Institute of Zoology, University of Graz, Universitätsplatz 2, A-8010 Graz, Austria; Institute of Life and Environmental Sciences, University of Iceland, Sturlugata 7, 101 Reykjavik, Iceland.
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