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García-Fernández C, Lizano E, Telford M, Olalde Í, de Cid R, Larmuseau MHD, M. de Pancorbo M, Calafell F. Y-chromosome target enrichment reveals rapid expansion of haplogroup R1b-DF27 in Iberia during the Bronze Age transition. Sci Rep 2022; 12:20708. [PMID: 36456614 PMCID: PMC9715704 DOI: 10.1038/s41598-022-25200-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 11/25/2022] [Indexed: 12/05/2022] Open
Abstract
The Y chromosome can yield a unique perspective into the study of human demographic history. However, due to the repetitive nature of part of its sequence, only a small set of regions are suitable for variant calling and discovery from short-read sequencing data. These regions combined represent 8.9 Mbp or 0.14% of a diploid human genome. Consequently, investing in whole-genome sequencing to resolve Y-chromosome questions is poorly efficient. Here we use, as an alternative, target enrichment technology to greatly increase sequencing effectiveness, validating and applying the technique to 181 males, for 162 of whom we obtained a positive result. Additionally, 75 samples sequenced for the whole genome were also included, for a total sample size of 237. These samples were chosen for their Y chromosome haplogroup: R1b-DF27. In the context of European populations, and particularly in Iberia, this haplogroup stands out for its high frequency and its demographic history. Current evidence indicates that the diffusion of this haplogroup is related to the population movements that mark the cultural Bronze Age transition, making it remarkably interesting for population geneticists. The results of this study show the effects of the rapid radiation of the haplogroup in Spain, as even with the higher discriminating power of whole sequences, most haplotypes still fall within the R1b-DF27* paragroup rather than in the main derived branches. However, we were able to refine the ISOGG 2019-2020 phylogeny, and its two main subbranches, namely L176.2 and Z272, which present geographical differentiation between the Atlantic and Mediterranean coasts of Iberia.
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Affiliation(s)
- Carla García-Fernández
- grid.5612.00000 0001 2172 2676Department of Medicine and Life Sciences, Institute of Evolutionary Biology (UPF-CSIC), Universitat Pompeu Fabra, Dr. Aiguader 88, 08003 Barcelona, Spain
| | - Esther Lizano
- grid.5612.00000 0001 2172 2676Department of Medicine and Life Sciences, Institute of Evolutionary Biology (UPF-CSIC), Universitat Pompeu Fabra, Dr. Aiguader 88, 08003 Barcelona, Spain ,grid.7080.f0000 0001 2296 0625Institut Català de Paleontologia Miquel Crusafont, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain
| | - Marco Telford
- grid.5612.00000 0001 2172 2676Department of Medicine and Life Sciences, Institute of Evolutionary Biology (UPF-CSIC), Universitat Pompeu Fabra, Dr. Aiguader 88, 08003 Barcelona, Spain
| | - Íñigo Olalde
- grid.11480.3c0000000121671098BIOMICs Research Group, University of the Basque Country UPV/EHU, Vitoria-Gasteiz, Spain ,grid.424810.b0000 0004 0467 2314Ikerbasque—Basque Foundation of Science, Bilbao, Spain
| | - Rafael de Cid
- grid.429186.00000 0004 1756 6852Genomes for Life-GCAT Lab, Germans Trias i Pujol Research Institute (IGTP), Badalona, Spain
| | - Maarten H. D. Larmuseau
- grid.5596.f0000 0001 0668 7884Laboratory of Human Genetic Genealogy, Department of Human Genetics, KU Leuven, Leuven, Belgium ,grid.5284.b0000 0001 0790 3681ARCHES–Antwerp Cultural Heritage Sciences, Faculty of Design Sciences, University of Antwerp, Antwerp, Belgium ,Histories Vzw, Gent, Belgium
| | - Marian M. de Pancorbo
- grid.11480.3c0000000121671098BIOMICs Research Group, University of the Basque Country UPV/EHU, Vitoria-Gasteiz, Spain
| | - Francesc Calafell
- grid.5612.00000 0001 2172 2676Department of Medicine and Life Sciences, Institute of Evolutionary Biology (UPF-CSIC), Universitat Pompeu Fabra, Dr. Aiguader 88, 08003 Barcelona, Spain
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Ferreira FC, Videvall E, Seidl CM, Wagner NE, Kilpatrick AM, Fleischer RC, Fonseca DM. Transcriptional response of individual Hawaiian Culex quinquefasciatus mosquitoes to the avian malaria parasite Plasmodium relictum. Malar J 2022; 21:249. [PMID: 36038897 PMCID: PMC9422152 DOI: 10.1186/s12936-022-04271-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Accepted: 08/16/2022] [Indexed: 11/10/2022] Open
Abstract
Background Plasmodium parasites that cause bird malaria occur in all continents except Antarctica and are primarily transmitted by mosquitoes in the genus Culex. Culex quinquefasciatus, the mosquito vector of avian malaria in Hawaiʻi, became established in the islands in the 1820s. While the deadly effects of malaria on endemic bird species have been documented for many decades, vector-parasite interactions in avian malaria systems are relatively understudied. Methods To evaluate the gene expression response of mosquitoes exposed to a Plasmodium infection intensity known to occur naturally in Hawaiʻi, offspring of wild-collected Hawaiian Cx. quinquefasciatus were fed on a domestic canary infected with a fresh isolate of Plasmodium relictum GRW4 from a wild-caught Hawaiian honeycreeper. Control mosquitoes were fed on an uninfected canary. Transcriptomes of five infected and three uninfected individual mosquitoes were sequenced at each of three stages of the parasite life cycle: 24 h post feeding (hpf) during ookinete invasion; 5 days post feeding (dpf) when oocysts are developing; 10 dpf when sporozoites are released and invade the salivary glands. Results Differential gene expression analyses showed that during ookinete invasion (24 hpf), genes related to oxidoreductase activity and galactose catabolism had lower expression levels in infected mosquitoes compared to controls. Oocyst development (5 dpf) was associated with reduced expression of a gene with a predicted innate immune function. At 10 dpf, infected mosquitoes had reduced expression levels of a serine protease inhibitor, and further studies should assess its role as a Plasmodium agonist in C. quinquefasciatus. Overall, the differential gene expression response of Hawaiian Culex exposed to a Plasmodium infection intensity known to occur naturally in Hawaiʻi was low, but more pronounced during ookinete invasion. Conclusions This is the first analysis of the transcriptional responses of vectors to malaria parasites in non-mammalian systems. Interestingly, few similarities were found between the response of Culex infected with a bird Plasmodium and those reported in Anopheles infected with human Plasmodium. The relatively small transcriptional changes observed in mosquito genes related to immune response and nutrient metabolism support conclusions of low fitness costs often documented in experimental challenges of Culex with avian Plasmodium. Supplementary Information The online version contains supplementary material available at 10.1186/s12936-022-04271-x.
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Affiliation(s)
- Francisco C Ferreira
- Center for Conservation Genomics, Smithsonian Conservation Biology Institute, Washington, DC, USA. .,Center for Vector Biology, Entomology Department, Rutgers University, New Brunswick, NJ, 08901, USA.
| | - Elin Videvall
- Center for Conservation Genomics, Smithsonian Conservation Biology Institute, Washington, DC, USA.,Department of Ecology, Evolution and Organismal Biology, Brown University, Providence, RI, USA.,Institute at Brown for Environment and Society, Brown University, Providence, RI, USA.,Animal Ecology, Department of Ecology and Genetics, Uppsala University, Uppsala, Sweden
| | - Christa M Seidl
- Department of Ecology and Evolutionary Biology, University of California, Santa Cruz, CA, USA
| | - Nicole E Wagner
- Center for Vector Biology, Entomology Department, Rutgers University, New Brunswick, NJ, 08901, USA
| | - A Marm Kilpatrick
- Department of Ecology and Evolutionary Biology, University of California, Santa Cruz, CA, USA
| | - Robert C Fleischer
- Center for Conservation Genomics, Smithsonian Conservation Biology Institute, Washington, DC, USA
| | - Dina M Fonseca
- Center for Vector Biology, Entomology Department, Rutgers University, New Brunswick, NJ, 08901, USA
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