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Mokashi SS, Shankar V, Johnstun JA, Mackay TFC, Anholt RRH. Pleiotropic fitness effects of a Drosophila odorant-binding protein. G3 (BETHESDA, MD.) 2023; 13:jkac307. [PMID: 36454098 PMCID: PMC9911060 DOI: 10.1093/g3journal/jkac307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 11/11/2022] [Accepted: 11/14/2022] [Indexed: 12/05/2022]
Abstract
Insect odorant-binding proteins (OBPs) are members of a rapidly evolving multigene family traditionally thought to facilitate chemosensation. However, studies on Drosophila have shown that members of this family have evolved functions beyond chemosensation, as evident from their expression in reproductive tissues and the brain. Previous studies implicated diverse functions of Obp56h, a member of the largest gene cluster of the D. melanogaster Obp repertoire. Here, we examined the effect of CRISPR/Cas9-mediated deletion of Obp56h on 2 fitness phenotypes, on resistance to starvation stress and heat stress, and on locomotion and sleep phenotypes. Obp56h-/- mutants show a strong sexually dimorphic effect on starvation stress survival, with females being more resistant to starvation stress than the control. In contrast, Obp56h-/- females, but not males, are highly sensitive to heat stress. Both sexes show changes in locomotion and sleep patterns. Transcriptional profiling of RNA from heads of Obp56h-/- flies and the wildtype control reveals differentially expressed genes, including gene products associated with antimicrobial immune responses and members of the Turandot family of stress-induced secreted peptides. In addition, differentially expressed genes of unknown function were identified in both sexes. Genes encoding components of the mitochondrial electron transport chain, cuticular proteins, gene products associated with regulation of feeding behavior (Lst and CCHa2), ribosomal proteins, lncRNAs, snoRNAs, tRNAs, and snRNAs show changes in transcript abundances in Obp56h-/- females. These differentially expressed genes are likely to contribute to Obp56h-mediated effects on the diverse phenotypes that arise upon deletion of this OBP.
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Affiliation(s)
- Sneha S Mokashi
- Department of Genetics and Biochemistry and Center for Human Genetics, Clemson University, 114 Gregor Mendel Circle, Greenwood, SC 29646, USA
| | - Vijay Shankar
- Department of Genetics and Biochemistry and Center for Human Genetics, Clemson University, 114 Gregor Mendel Circle, Greenwood, SC 29646, USA
| | - Joel A Johnstun
- Department of Biological Sciences, Program in Genetics, North Carolina State University, Raleigh, NC 27695, USA
| | - Trudy F C Mackay
- Department of Genetics and Biochemistry and Center for Human Genetics, Clemson University, 114 Gregor Mendel Circle, Greenwood, SC 29646, USA
| | - Robert R H Anholt
- Department of Genetics and Biochemistry and Center for Human Genetics, Clemson University, 114 Gregor Mendel Circle, Greenwood, SC 29646, USA
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Ramírez D, Rodríguez ME, Cross I, Arias-Pérez A, Merlo MA, Anaya M, Portela-Bens S, Martínez P, Robles F, Ruiz-Rejón C, Rebordinos L. Integration of Maps Enables a Cytogenomics Analysis of the Complete Karyotype in Solea senegalensis. Int J Mol Sci 2022; 23:ijms23105353. [PMID: 35628170 PMCID: PMC9140517 DOI: 10.3390/ijms23105353] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 04/28/2022] [Accepted: 05/09/2022] [Indexed: 02/06/2023] Open
Abstract
The Pleuronectiformes order, which includes several commercially-important species, has undergone extensive chromosome evolution. One of these species is Solea senegalensis, a flatfish with 2n = 42 chromosomes. In this study, a cytogenomics approach and integration with previous maps was applied to characterize the karyotype of the species. Synteny analysis of S. senegalensis was carried out using two flatfish as a reference: Cynoglossus semilaevis and Scophthalmus maximus. Most S. senegalensis chromosomes (or chromosome arms for metacentrics and submetacentrics) showed a one-to-one macrosyntenic pattern with the other two species. In addition, we studied how repetitive sequences could have played a role in the evolution of S. senegalensis bi-armed (3, and 5–9) and acrocentric (11, 12 and 16) chromosomes, which showed the highest rearrangements compared with the reference species. A higher abundance of TEs (Transposable Elements) and other repeated elements was observed adjacent to telomeric regions on chromosomes 3, 7, 9 and 16. However, on chromosome 11, a greater abundance of DNA transposons was detected in interstitial BACs. This chromosome is syntenic with several chromosomes of the other two flatfish species, suggesting rearrangements during its evolution. A similar situation was also found on chromosome 16 (for microsatellites and low complexity sequences), but not for TEs (retroelements and DNA transposons). These differences in the distribution and abundance of repetitive elements in chromosomes that have undergone remodeling processes during the course of evolution also suggest a possible role for simple repeat sequences in rearranged regions.
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Affiliation(s)
- Daniel Ramírez
- Área de Genética, Facultad de Ciencias del Mar y Ambientales, INMAR, Universidad de Cádiz, 11510 Cádiz, Spain; (D.R.); (M.E.R.); (I.C.); (A.A.-P.); (M.A.M.); (M.A.); (S.P.-B.)
| | - María Esther Rodríguez
- Área de Genética, Facultad de Ciencias del Mar y Ambientales, INMAR, Universidad de Cádiz, 11510 Cádiz, Spain; (D.R.); (M.E.R.); (I.C.); (A.A.-P.); (M.A.M.); (M.A.); (S.P.-B.)
| | - Ismael Cross
- Área de Genética, Facultad de Ciencias del Mar y Ambientales, INMAR, Universidad de Cádiz, 11510 Cádiz, Spain; (D.R.); (M.E.R.); (I.C.); (A.A.-P.); (M.A.M.); (M.A.); (S.P.-B.)
| | - Alberto Arias-Pérez
- Área de Genética, Facultad de Ciencias del Mar y Ambientales, INMAR, Universidad de Cádiz, 11510 Cádiz, Spain; (D.R.); (M.E.R.); (I.C.); (A.A.-P.); (M.A.M.); (M.A.); (S.P.-B.)
| | - Manuel Alejandro Merlo
- Área de Genética, Facultad de Ciencias del Mar y Ambientales, INMAR, Universidad de Cádiz, 11510 Cádiz, Spain; (D.R.); (M.E.R.); (I.C.); (A.A.-P.); (M.A.M.); (M.A.); (S.P.-B.)
| | - Marco Anaya
- Área de Genética, Facultad de Ciencias del Mar y Ambientales, INMAR, Universidad de Cádiz, 11510 Cádiz, Spain; (D.R.); (M.E.R.); (I.C.); (A.A.-P.); (M.A.M.); (M.A.); (S.P.-B.)
| | - Silvia Portela-Bens
- Área de Genética, Facultad de Ciencias del Mar y Ambientales, INMAR, Universidad de Cádiz, 11510 Cádiz, Spain; (D.R.); (M.E.R.); (I.C.); (A.A.-P.); (M.A.M.); (M.A.); (S.P.-B.)
| | - Paulino Martínez
- Departamento de Zoología, Genética y Antropología Física, Universidad de Santiago de Compostela, 27002 Lugo, Spain;
| | - Francisca Robles
- Departamento de Genética, Universidad de Granada, 18071 Granada, Spain; (F.R.); (C.R.-R.)
| | - Carmelo Ruiz-Rejón
- Departamento de Genética, Universidad de Granada, 18071 Granada, Spain; (F.R.); (C.R.-R.)
| | - Laureana Rebordinos
- Área de Genética, Facultad de Ciencias del Mar y Ambientales, INMAR, Universidad de Cádiz, 11510 Cádiz, Spain; (D.R.); (M.E.R.); (I.C.); (A.A.-P.); (M.A.M.); (M.A.); (S.P.-B.)
- Correspondence: ; Tel.: +34-956-016181
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Vaschetto LM, Editor G. The Critical Role of Epigenetic Regulation in Developmental Programming of Higher Organisms. Curr Genomics 2019; 20:403-404. [PMID: 32476996 PMCID: PMC7235389 DOI: 10.2174/138920292006191206141546] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Affiliation(s)
- Luis María Vaschetto
- Agronomy, Horticulture & Plant Science Department
- South Dakota State University
- Brookings, SD
- USA
| | - Guest Editor
- Agronomy, Horticulture & Plant Science Department
- South Dakota State University
- Brookings, SD
- USA
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