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Frank CE, Sadeghi J, Heath DD, Semeniuk CAD. Behavioral transcriptomic effects of triploidy and probiotic therapy (Bifidobacterium, Lactobacillus, and Lactococcus mixture) on juvenile Chinook salmon (Oncorhynchus tshawytscha). GENES, BRAIN, AND BEHAVIOR 2024; 23:e12898. [PMID: 38817102 DOI: 10.1111/gbb.12898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 04/15/2024] [Accepted: 04/25/2024] [Indexed: 06/01/2024]
Abstract
Aquaculturists use polyploid fish to maximize production albeit with some unintended consequences including compromised behaviors and physiological function. Given benefits of probiotic therapies (e.g., improved immune response, growth, and metabolism), we explored probiotic supplementation (mixture of Bifidobacterium, Lactobacillus, and Lactococcus), to overcome drawbacks. We first examined fish gut bacterial community composition using 16S metabarcoding (via principal coordinate analyses and PERMANOVA) and determined probiotics significantly impacted gut bacteria composition (p = 0.001). Secondly, we examined how a genomic disruptor (triploidy) and diet supplements (probiotics) impact gene transcription and behavioral profiles of hatchery-reared Chinook salmon (Oncorhynchus tshawytscha). Juveniles from four treatment groups (diploid-regular feed, diploid-probiotic feed, triploid-regular feed, and triploid-probiotic feed; n = 360) underwent behavioral assays to test activity, exploration, neophobia, predator evasion, aggression/sociality, behavioral sensitivity, and flexibility. In these fish, transcriptional profiles for genes associated with neural functions (neurogenesis/synaptic plasticity) and biomarkers for stress response and development (growth/appetite) were (i) examined across treatments and (ii) used to describe behavioral phenotypes via principal component analyses and general linear mixed models. Triploids exhibited a more active behavioral profile (p = 0.002), and those on a regular diet had greater Neuropeptide Y transcription (p = 0.02). A growth gene (early growth response protein 1, p = 0.02) and long-term neural development genes (neurogenic differentiation factor, p = 0.003 and synaptysomal-associated protein 25-a, p = 0.005) impacted activity and reactionary profiles, respectively. Overall, our probiotic treatment did not compensate for triploidy. Our research highlights novel applications of behavioral transcriptomics for identifying candidate genes and dynamic, mechanistic associations with complex behavioral repertoires.
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Affiliation(s)
- Chelsea E Frank
- Department of Integrative Biology, University of Windsor, Windsor, Ontario, Canada
| | - Javad Sadeghi
- Great Lakes Institute for Environmental Research, University of Windsor, Windsor, Ontario, Canada
| | - Daniel D Heath
- Department of Integrative Biology, University of Windsor, Windsor, Ontario, Canada
- Great Lakes Institute for Environmental Research, University of Windsor, Windsor, Ontario, Canada
| | - Christina A D Semeniuk
- Department of Integrative Biology, University of Windsor, Windsor, Ontario, Canada
- Great Lakes Institute for Environmental Research, University of Windsor, Windsor, Ontario, Canada
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Rahman MM, Kundu S, Biswas P, Parvez MS, Rouf MA, Asaduzzaman S, Debnath S, Rahman MM, Asaduzzaman M. Influence of maternal weight, age, larval feeding and their interactions on the hatchery outcomes of an Indian major carp (Labeo rohita, Hamilton 1822). AQUACULTURE REPORTS 2021; 19:100633. [DOI: 10.1016/j.aqrep.2021.100633] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/27/2023]
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3
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Wu Z, Xu S, Wang L, Wu Q, Li J, Liu H, You F. Transcription profiles and fatty acid composition of the artificial induced triploid alevin in Atlantic salmon Salmo salar. Theriogenology 2020; 155:49-59. [DOI: 10.1016/j.theriogenology.2020.06.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 06/08/2020] [Accepted: 06/09/2020] [Indexed: 10/24/2022]
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Christensen KA, Sakhrani D, Rondeau EB, Richards J, Koop BF, Devlin RH. Effect of triploidy on liver gene expression in coho salmon (Oncorhynchus kisutch) under different metabolic states. BMC Genomics 2019; 20:336. [PMID: 31053056 PMCID: PMC6500012 DOI: 10.1186/s12864-019-5655-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Accepted: 03/27/2019] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Triploid coho salmon are excellent models for studying gene dosage and the effects of increased cell volume on gene expression. Triploids have an additional haploid genome in each cell and have fewer but larger cells than diploid coho salmon to accommodate the increased genome size. Studying gene expression in triploid coho salmon provides insight into how gene expression may have been affected after the salmonid-specific genome duplication which occurred some 90 MYA. Triploid coho salmon are sterile and consequently can live longer and grow larger than diploid congeners in many semelparous species (spawning only once) because they never reach maturity and post-spawning mortality is averted. Triploid fishes are also of interest to the commercial sector (larger fish are more valuable) and to fisheries management since sterile fish can potentially minimize negative impacts of escaped fish in the wild. RESULTS The vast majority of genes in liver tissue had similar expression levels between diploid and triploid coho salmon, indicating that the same amount of mRNA transcripts were being produced per gene copy (positive gene dosage effects) within a larger volume cell. Several genes related to nutrition and compensatory growth were differentially expressed between diploid and triploid salmon, indicating that some loci are sensitive to cell size and/or DNA content per cell. To examine how robust expression between ploidies is under different conditions, a genetic/metabolic modifier in the form of different doses of a growth hormone transgene was used to assess gene expression under conditions that the genome has not naturally experienced or adapted to. While many (up to 1400) genes were differentially expressed between non-transgenic and transgenic fish, relatively few genes were differentially expressed between diploids and triploids with similar doses of the transgene. These observations indicate that the small effect of ploidy on gene expression is robust to large changes in physiological state. CONCLUSIONS These findings are of interest from a gene regulatory perspective, but also valuable for understanding phenotypic effects in triploids, transgenics, and triploid transgenics that could affect their utility in culture conditions and their fitness and potential consequences of release into nature.
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Affiliation(s)
- Kris A Christensen
- Fisheries and Oceans Canada, West Vancouver, BC, Canada.,Department of Biology, University of Victoria, Victoria, BC, Canada
| | | | - Eric B Rondeau
- Fisheries and Oceans Canada, West Vancouver, BC, Canada.,Department of Biology, University of Victoria, Victoria, BC, Canada
| | - Jeffery Richards
- Department of Zoology, University of British Columbia, Vancouver, BC, Canada
| | - Ben F Koop
- Department of Biology, University of Victoria, Victoria, BC, Canada
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Li W, Liu J, Tan H, Luo L, Cui J, Hu J, Wang S, Liu Q, Hu F, Tang C, Ren L, Yang C, Zhao R, Tao M, Zhang C, Qin Q, Liu S. Asymmetric expression patterns reveal a strong maternal effect and dosage compensation in polyploid hybrid fish. BMC Genomics 2018; 19:517. [PMID: 29969984 PMCID: PMC6030793 DOI: 10.1186/s12864-018-4883-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Accepted: 06/19/2018] [Indexed: 03/05/2023] Open
Abstract
Background Hybridization and polyploidization are regarded as the major driving forces in plant speciation, diversification, and ecological adaptation. Our knowledge regarding the mechanisms of duplicated-gene regulation following genomic merging or doubling is primarily derived from plants and is sparse for vertebrates. Results We successfully obtained an F1 generation (including allodiploid hybrids and triploid hybrids) from female Megalobrama amblycephala Yih (BSB, 2n = 48) × male Xenocypri davidi Bleeker (YB, 2n = 48). The duplicated-gene expression patterns of the two types of hybrids were explored using RNA-Seq data. In total, 5.44 × 108 (69.32 GB) clean reads and 499,631 assembled unigenes were obtained from the testis transcriptomes. The sequence similarity analysis of 4265 orthologs revealed that the merged genomes were dominantly expressed in different ploidy hybrids. The differentially expressed genes in the two types of hybrids were asymmetric compared with those in both parents. Furthermore, the genome-wide expression level dominance (ELD) was biased toward the maternal BSB genome in both the allodiploid and triploid hybrids. In addition, the dosage-compensation mechanisms that reduced the triploid expression levels to the diploid state were determined in the triploid hybrids. Conclusions Our results indicate that divergent genomes undergo strong interactions and domination in allopolyploid offspring. Genomic merger has a greater effect on the gene-expression patterns than genomic doubling. The various expression mechanisms (including maternal effect and dosage compensation) in different ploidy hybrids suggest that the initial genomic merger and doubling play important roles in polyploidy adaptation and evolution. Electronic supplementary material The online version of this article (10.1186/s12864-018-4883-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Wuhui Li
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Normal university, Changsha, 410081, Hunan, People's Republic of China.,College of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, People's Republic of China
| | - Junmei Liu
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Normal university, Changsha, 410081, Hunan, People's Republic of China.,College of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, People's Republic of China
| | - Hui Tan
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Normal university, Changsha, 410081, Hunan, People's Republic of China.,College of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, People's Republic of China
| | - Lingling Luo
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Normal university, Changsha, 410081, Hunan, People's Republic of China.,College of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, People's Republic of China
| | - Jialin Cui
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Normal university, Changsha, 410081, Hunan, People's Republic of China.,College of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, People's Republic of China
| | - Jie Hu
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Normal university, Changsha, 410081, Hunan, People's Republic of China.,College of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, People's Republic of China
| | - Shi Wang
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Normal university, Changsha, 410081, Hunan, People's Republic of China.,College of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, People's Republic of China
| | - Qingfeng Liu
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Normal university, Changsha, 410081, Hunan, People's Republic of China.,College of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, People's Republic of China
| | - Fangzhou Hu
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Normal university, Changsha, 410081, Hunan, People's Republic of China.,College of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, People's Republic of China
| | - Chenchen Tang
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Normal university, Changsha, 410081, Hunan, People's Republic of China.,College of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, People's Republic of China
| | - Li Ren
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Normal university, Changsha, 410081, Hunan, People's Republic of China.,College of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, People's Republic of China
| | - Conghui Yang
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Normal university, Changsha, 410081, Hunan, People's Republic of China.,College of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, People's Republic of China
| | - Rurong Zhao
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Normal university, Changsha, 410081, Hunan, People's Republic of China.,College of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, People's Republic of China
| | - Min Tao
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Normal university, Changsha, 410081, Hunan, People's Republic of China.,College of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, People's Republic of China
| | - Chun Zhang
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Normal university, Changsha, 410081, Hunan, People's Republic of China.,College of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, People's Republic of China
| | - Qinbo Qin
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Normal university, Changsha, 410081, Hunan, People's Republic of China.,College of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, People's Republic of China
| | - Shaojun Liu
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Normal university, Changsha, 410081, Hunan, People's Republic of China. .,College of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, People's Republic of China.
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Harvey AC, Fjelldal PG, Solberg MF, Hansen T, Glover KA. Ploidy elicits a whole-genome dosage effect: growth of triploid Atlantic salmon is linked to the genetic origin of the second maternal chromosome set. BMC Genet 2017; 18:34. [PMID: 28399816 PMCID: PMC5387229 DOI: 10.1186/s12863-017-0502-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Accepted: 04/06/2017] [Indexed: 12/30/2022] Open
Abstract
Background The Atlantic salmon aquaculture industry is investigating the feasibility of using sterile triploids to mitigate genetic interactions with wild conspecifics, however, studies investigating diploid and triploid performance often show contrasting results. Studies have identified dosage and dosage-compensation effects for gene expression between triploid and diploid salmonids, but no study has investigated how ploidy and parent-origin effects interact on a polygenic trait in divergent lines of Atlantic salmon (i.e. slow growing wild versus fast growing domesticated phenotype). This study utilised two experiments relating to the freshwater growth of diploid and triploid groups of pure wild (0% domesticated genome), pure domesticated (100% domesticated genome), and F1 reciprocal hybrid (33%, 50% or 66% domesticated genome) salmon where triploidy was either artificially induced (experiment 1) or naturally developed/spontaneous (experiment 2). Results In both experiments, reciprocal hybrid growth was influenced by the dosage effect of the second maternal chromosome, with growth increasing as ploidy level increased in individuals with a domesticated dam (from 50% to 66% domesticated genome), and the inverse in individuals with a wild dam (from 50% to 33% domesticated genome). Conclusions We demonstrate that the combined effect of ploidy and parent-origin on growth, a polygenic trait, is regulated in an additive pattern. Therefore, in order to maximise growth potential, the aquaculture industry should consider placing more emphasis on the breeding value of the dam than the sire when producing triploid families for commercial production. Electronic supplementary material The online version of this article (doi:10.1186/s12863-017-0502-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- A C Harvey
- Institute of Marine Research, P. O. Box 1870, Nordnes, NO-5817, Bergen, Norway.
| | - P G Fjelldal
- Institute of Marine Research (IMR), Matre Research Station, NO-5984, Matredal, Norway
| | - M F Solberg
- Institute of Marine Research, P. O. Box 1870, Nordnes, NO-5817, Bergen, Norway
| | - T Hansen
- Institute of Marine Research (IMR), Matre Research Station, NO-5984, Matredal, Norway
| | - K A Glover
- Institute of Marine Research, P. O. Box 1870, Nordnes, NO-5817, Bergen, Norway.,Department of Biology, University of Bergen, P. O. Box 7803, N-5020, Bergen, Norway
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7
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Babaheydari SB, Keyvanshokooh S, Dorafshan S, Johari SA. Modifications in the proteome of rainbow trout (Oncorhynchus mykiss) embryo and fry as an effect of triploidy induction. FISH PHYSIOLOGY AND BIOCHEMISTRY 2017; 43:579-589. [PMID: 27848040 DOI: 10.1007/s10695-016-0312-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Accepted: 10/31/2016] [Indexed: 06/06/2023]
Abstract
Two-dimensional gel electrophoresis (2-DE), matrix-assisted laser desorption/ionization tandem time-of-flight (MALDI-TOF/TOF) mass spectrometry, and database searching were used to analyze the effects of triploidization heat shock treatment on protein expression in rainbow trout eyed embryo and fry. After fertilization, the eggs were incubated at 10 °C for 10 min. Half of the eggs were then subjected to heat shock for 10 min submerged in a 28 °C water bath to induce triploidy. The remainder was incubated normally and used as diploid controls. Specimens of eyed embryos and fry were taken on 18 and 76 days post-fertilization, respectively. In the eyed embryo extracts, seven protein spots were significantly changed in abundance between the control and heat-shocked groups and one of these was decreased while the others were increased in the heat shock-treated group. Of the spots that were shown to change in abundance in the eyed embryos with heat shock treatment, two were identified as vitellogenin, while the others were creatine kinase and angiotensin I. In the 2-DE from the fry muscle extraction, 23 spots were significantly changed in abundance between the diploid and triploid groups. Nineteen of these showed a decreased abundance in diploids, while the remaining four spots had an increased abundance. Triploidization caused differential expression of muscle metabolic proteins including triosephosphate isomerase, glyceraldehyde-3-phosphate dehydrogenase, and beta-enolase. Myosin heavy chain as a structural protein was also found to change in abundance in triploids. The altered expression of both structural and metabolic proteins in triploids was consistent with their increased cell size and lower growth performance.
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Affiliation(s)
- Samad Bahrami Babaheydari
- Department of Fisheries, Faculty of Marine Natural Resources, Khorramshahr University of Marine Science and Technology, Khorramshahr, Khouzestan, Iran
| | - Saeed Keyvanshokooh
- Department of Fisheries, Faculty of Marine Natural Resources, Khorramshahr University of Marine Science and Technology, Khorramshahr, Khouzestan, Iran.
| | - Salar Dorafshan
- Department of Natural Resources, Isfahan University of Technology, Isfahan, 84156-83111, Iran
| | - Seyed Ali Johari
- Department of Fisheries, Faculty of Natural Resources, University of Kurdistan, Sanandaj, Kurdistan, Iran
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Ren L, Tang C, Li W, Cui J, Tan X, Xiong Y, Chen J, Wang J, Xiao J, Zhou Y, Wang J, Tao M, Zhang C, Liu S. Determination of dosage compensation and comparison of gene expression in a triploid hybrid fish. BMC Genomics 2017; 18:38. [PMID: 28056785 PMCID: PMC5216571 DOI: 10.1186/s12864-016-3424-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Accepted: 12/14/2016] [Indexed: 12/15/2022] Open
Abstract
Background Polyploidy and hybridization are both recognized as major forces in evolution. Most of our current knowledge about differences in gene regulation in polyploid hybrids comes from plant studies. The gene expression of diverged genomes and regulatory interactions are still unclear in lower vertebrates. Results We generated 229 million cleaned reads (42.23 Gbp) from triploid of maternal grass carp (Ctenopharyngodon idellus, Cyprininae, 2n = 48) × paternal blunt snout bream (Megalobrama amblycephala, Cultrinae, 2n = 48) and their diploid parents using next-generation sequencing. In total, 157,878 contigs were assembled and 15,444 genes were annotated. We examined gene expression level changes among the parents and their triploid offspring. The mechanisms of dosage compensation that reduced triploid expression levels to the diploid state were determined in triploid fish. In this situation, novel gene expression and gene silencing were observed. Then, we established a model to determine the extent and direction of expression level dominance (ELD) and homoeolog expression bias (HEB) based on the relative expression level among the parents and their triploid offspring. Conclusions Our results showed that the genome-wide ELD was biased toward maternal genome in triploid. Extensive alterations in homoeolog expression suggested a combination of regulatory and epigenetic interactions through the transcriptome network. Additionally, the expression patterns of growth genes provided insights into the relationship between the characteristics of growth and underlying mechanisms in triploids. Regulation patterns of triploid state suggest that various expression levels from the initial genomic merger have important roles in adaptation. Electronic supplementary material The online version of this article (doi:10.1186/s12864-016-3424-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Li Ren
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Normal University, Changsha, 410081, China
| | - Chenchen Tang
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Normal University, Changsha, 410081, China
| | - Wuhui Li
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Normal University, Changsha, 410081, China
| | - Jialin Cui
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Normal University, Changsha, 410081, China
| | - Xingjun Tan
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Normal University, Changsha, 410081, China
| | - Yafeng Xiong
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Normal University, Changsha, 410081, China
| | - Jie Chen
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Normal University, Changsha, 410081, China
| | - Jun Wang
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Normal University, Changsha, 410081, China
| | - Jun Xiao
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Normal University, Changsha, 410081, China
| | - Yi Zhou
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Normal University, Changsha, 410081, China
| | - Jing Wang
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Normal University, Changsha, 410081, China
| | - Min Tao
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Normal University, Changsha, 410081, China
| | - Chun Zhang
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Normal University, Changsha, 410081, China
| | - Shaojun Liu
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Normal University, Changsha, 410081, China.
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9
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Chai J, Su Y, Huang F, Liu S, Tao M, Murphy RW, Luo J. The gap in research on polyploidization between plants and vertebrates: model systems and strategic challenges. Sci Bull (Beijing) 2015. [DOI: 10.1007/s11434-015-0879-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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10
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Dégremont L, Garcia C, Allen SK. Genetic improvement for disease resistance in oysters: A review. J Invertebr Pathol 2015; 131:226-41. [PMID: 26037230 DOI: 10.1016/j.jip.2015.05.010] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2014] [Revised: 05/12/2015] [Accepted: 05/13/2015] [Indexed: 10/23/2022]
Abstract
Oyster species suffer from numerous disease outbreaks, often causing high mortality. Because the environment cannot be controlled, genetic improvement for disease resistance to pathogens is an attractive option to reduce their impact on oyster production. We review the literature on selective breeding programs for disease resistance in oyster species, and the impact of triploidy on such resistance. Significant response to selection to improve disease resistance was observed in all studies after two to four generations of selection for Haplosporidium nelsoni and Roseovarius crassostrea in Crassostrea virginica, OsHV-1 in Crassostrea gigas, and Martelia sydneyi in Saccostrea glomerata. Clearly, resistance in these cases was heritable, but most of the studies failed to provide estimates for heritability or genetic correlations with other traits, e.g., between resistance to one disease and another. Generally, it seems breeding for higher resistance to one disease does not confer higher resistance or susceptibility to another disease. For disease resistance in triploid oysters, several studies showed that triploidy confers neither advantage nor disadvantage in survival, e.g., OsHV-1 resistance in C. gigas. Other studies showed higher disease resistance of triploids over diploid as observed in C. virginica and S. glomerata. One indirect mechanism for triploids to avoid disease was to grow faster, thus limiting the span of time when oysters might be exposed to disease.
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Affiliation(s)
- Lionel Dégremont
- SG2M, LGPMM, Ifremer, Avenue Mus de Loup, 17390 La Tremblade, France.
| | - Céline Garcia
- SG2M, LGPMM, Ifremer, Avenue Mus de Loup, 17390 La Tremblade, France.
| | - Standish K Allen
- Aquaculture Genetics and Breeding Technology Center, Virginia Institute of Marine Science, College of William and Mary, 1208 Greate Road, Gloucester Point, VA 23062-1346, USA.
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11
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Xu Q, Feng CY, Hori TS, Plouffe DA, Buchanan JT, Rise ML. Family-specific differences in growth rate and hepatic gene expression in juvenile triploid growth hormone (GH) transgenic Atlantic salmon (Salmo salar). COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY D-GENOMICS & PROTEOMICS 2013; 8:317-33. [PMID: 24145116 DOI: 10.1016/j.cbd.2013.09.002] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2013] [Revised: 09/24/2013] [Accepted: 09/26/2013] [Indexed: 01/13/2023]
Abstract
Growth hormone transgenic (GHTg) Atlantic salmon (Salmo salar) have enhanced growth when compared to their non-transgenic counterparts, and this trait can be beneficial for aquaculture production. Biological confinement of GHTg Atlantic salmon may be achieved through the induction of triploidy (3N). The growth rates of triploid GH transgenic (3NGHTg) Atlantic salmon juveniles were found to significantly vary between families in the AquaBounty breeding program. In order to characterize gene expression associated with enhanced growth in juvenile 3NGHTg Atlantic salmon, a functional genomics approach (32K cDNA microarray hybridizations followed by QPCR) was used to identify and validate liver transcripts that were differentially expressed between two fast-growing 3NGHTg Atlantic salmon families (AS11, AS26) and a slow-growing 3NGHTg Atlantic salmon family (AS25); juvenile growth rate was evaluated over a 45-day period. Of 687 microarray-identified differentially expressed features, 143 (116 more highly expressed in fast-growing and 27 more highly expressed in slow-growing juveniles) were identified in the AS11 vs. AS25 microarray study, while 544 (442 more highly expressed in fast-growing and 102 more highly expressed in slow-growing juveniles) were identified in the AS26 vs. AS25 microarray study. Forty microarray features (39 putatively associated with fast growth and 1 putatively associated with slow growth) were present in both microarray experiment gene lists. The expression levels of 15 microarray-identified transcripts were studied using QPCR with individual RNA samples to validate microarray results and to study biological variability of transcript expression. The QPCR results agreed with the microarray results for 12 of 13 putative fast-growth associated transcripts, but QPCR did not validate the microarray results for 2 putative slow-growth associated transcripts. Many of the 39 microarray-identified genes putatively associated at the transcript expression level with fast-growing 3NGHTg salmon juveniles (including APOA1, APOA4, B2M, FADSD6, FTM, and GAPDH) are involved in metabolism, iron homeostasis and oxygen transport, and immune- or stress-related responses. The results of this study increase our knowledge of family-specific impacts on growth rate and hepatic gene expression in juvenile 3NGHTg Atlantic salmon. In addition, this study provides a suite of putative rapid growth rate-associated transcripts that may contribute to the development of molecular markers [e.g. intronic, exonic or regulatory region single nucleotide polymorphisms (SNPs)] for the selection of GHTg Atlantic salmon broodstock that can be utilized to produce sterile triploids of desired growth performance for future commercial applications.
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Affiliation(s)
- Qingheng Xu
- Ocean Sciences Centre, Memorial University of Newfoundland, St. John's, NL A1C 5S7, Canada
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12
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The influence of parental effects on transcriptomic landscape during early development in brook charr (Salvelinus fontinalis, Mitchill). Heredity (Edinb) 2013; 110:484-91. [PMID: 23299101 DOI: 10.1038/hdy.2012.113] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Parental effects represent an important source of variation in offspring phenotypes. Depending on the specific mechanisms involved, parental effects may be caused to different degrees by either the maternal or the paternal parent, and these effects may in turn act at different stages of development. To detect parental effects acting on gene transcription regulation and length phenotype during ontogeny, the transcriptomic profiles of two reciprocal hybrids from Laval × Rupert and Laval × Domestic populations of brook charr were compared at hatching, yolk sac resorption and 15 weeks after exogenous feeding. Using a salmonid cDNA microarray, our results show that parental effects modulated gene expression among reciprocal hybrids only at the yolk sac resorption stage. In addition, Laval × Domestic and Laval × Rupert reciprocal hybrids differed in the magnitude of theses parental effects, with 199 and 630 differentially expressed transcripts, respectively. This corresponds to a maximum of 18.5% of the analyzed transcripts. These transcripts are functionally related to cell cycle, nucleic acid metabolism and intracellular protein traffic, which is consistent with observed differences associated with embryonic development and growth differences in other fish species. Our results thus illustrate how parental effects on patterns of gene transcription seem dependent on the genetic architecture of the parents. In addition, in absence of transcriptional differences, non-transcript deposits in the yolk sac could contribute to the observed length differences among the reciprocal hybrids before yolk sac resorption.
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Haberkorn H, Lambert C, Le Goïc N, Guéguen M, Moal J, Palacios E, Lassus P, Soudant P. Effects of Alexandrium minutum exposure upon physiological and hematological variables of diploid and triploid oysters, Crassostrea gigas. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2010; 97:96-108. [PMID: 20045204 DOI: 10.1016/j.aquatox.2009.12.006] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2009] [Revised: 12/01/2009] [Accepted: 12/04/2009] [Indexed: 05/28/2023]
Abstract
The effects of an artificial bloom of the toxin-producing dinoflagellate, Alexandrium minutum, upon physiological parameters of the Pacific oyster, Crassostrea gigas, were assessed. Diploid and triploid oysters were exposed to cultured A. minutum and compared to control diploid and triploid oysters fed T. Isochrysis. Experiments were repeated twice, in April and mid-May 2007, to investigate effects of maturation stage on oyster responses to A. minutum exposure. Oyster maturation stage, Paralytic Shellfish Toxin (PST) accumulation, as well as several digestive gland and hematological variables, were assessed at the ends of the exposures. In both experiments, triploid oysters accumulated more PSTs (approximately twice) than diploid oysters. Significant differences, in terms of phenoloxidase activity (PO) and reactive oxygen species (ROS) production of hemocytes, were observed between A. minutum-exposed and non-exposed oysters. PO in hemocytes was lower in oysters exposed to A. minutum than in control oysters in an early maturation stage (diploids and triploids in April experiment and triploids in May experiment), but this contrast was reversed in ripe oysters (diploids in May experiment). In the April experiment, granulocytes of oysters exposed to A. minutum produced more ROS than those of control oysters; however, in the May experiment, ROS production of granulocytes was lower in A. minutum-exposed oysters. Moreover, significant decreases in free fatty acid, monoacylglycerol, and diacylglycerol contents in digestive glands of oysters exposed to A. minutum were observed. Concurrently, the ratio of reserve lipids (triacylglycerol, ether glycerides and sterol esters) to structural lipids (sterols) decreased upon A. minutum exposure in both experiments. Also, several physiological responses to A. minutum exposure appeared to be modulated by maturation stage as well as ploidy of the oysters.
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Affiliation(s)
- Hansy Haberkorn
- Laboratoire des Sciences de l'Environnement Marin, Institut Universitaire Européen de la Mer, Université de Bretagne Occidentale, Place Copernic, Technopôle Brest-Iroise, 29280 Plouzané, France
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Ching B, Jamieson S, Heath JW, Heath DD, Hubberstey A. Transcriptional differences between triploid and diploid Chinook salmon (Oncorhynchus tshawytscha) during live Vibrio anguillarum challenge. Heredity (Edinb) 2009; 104:224-34. [DOI: 10.1038/hdy.2009.108] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
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