The genomic basis of the plant island syndrome in Darwin's giant daisies.

Autor: Cerca J; Department of Natural History, NTNU University Museum, Norwegian University of Science and Technology, Trondheim, Norway. jose.cerca@gmail.com., Petersen B; Centre for Evolutionary Hologenomics, The GLOBE Institute, Faculty of Health and Medical Sciences, University of Copenhagen, Øster Farimagsgade 5, 1353, Copenhagen, Denmark.; Centre of Excellence for Omics-Driven Computational Biodiscovery, Faculty of Applied Sciences, AIMST University, Kedah, Malaysia., Lazaro-Guevara JM; Department of Botany and Biodiversity Research Centre, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada., Rivera-Colón A; Department of Evolution, Ecology, and Behavior, University of Illinois at Urbana-Champaign, Champaign, IL, USA., Birkeland S; Department of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences, Ås, Norway.; Natural History Museum, University of Oslo, Oslo, Norway., Vizueta J; Villum Centre for Biodiversity Genomics, Section for Ecology and Evolution, Department of Biology, University of Copenhagen, Universitetsparken 15, 2100, Copenhagen, Denmark., Li S; Department of Plant Biology, University of California, Davis, Davis, CA, 95616, USA., Li Q; Department of Botany and Biodiversity Research Centre, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada., Loureiro J; Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-095, Coimbra, Portugal., Kosawang C; Department of Geosciences and Natural Resource Management, University of Copenhagen, Rolighedsvej 23, 1958, Frederiksberg C, Denmark., Díaz PJ; Estación Científica Charles Darwin, Fundación Charles Darwin, Santa Cruz, Galápagos, Ecuador.; Department of Botany and Plant Physiology, University of Malaga, Malaga, Spain., Rivas-Torres G; Colegio de Ciencias Biológicas y Ambientales COCIBA & Extensión Galápagos, Universidad San Francisco de Quito USFQ, Quito, 170901, Ecuador.; Galapagos Science Center, USFQ, UNC Chapel Hill, San Cristobal, Galapagos, Ecuador.; Estación de Biodiversidad Tiputini, Colegio de Ciencias Biológicas y Ambientales, Universidad San Francisco de Quito USFQ, Quito, Ecuador.; Courtesy Faculty, Department of Wildlife Ecology and Conservation, University of Florida, 110 Newins-Ziegler Hall, Gainesville, FL, 32611, USA., Fernández-Mazuecos M; Departamento de Biología, Universidad Autónoma de Madrid, 28049, Madrid, Spain., Vargas P; Departamento de Biodiversidad y Conservación, Real Jardín Botánico (RJB-CSIC), Plaza de Murillo 2, 28014, Madrid, Spain., McCauley RA; Department of Biology, Fort Lewis College, Durango, CO, 81301, USA., Petersen G; Department of Ecology, Environment and Plant Sciences, Stockholm University, SE-106 91, Stockholm, Sweden., Santos-Bay L; Centre for Evolutionary Hologenomics, The GLOBE Institute, Faculty of Health and Medical Sciences, University of Copenhagen, Øster Farimagsgade 5, 1353, Copenhagen, Denmark., Wales N; Department of Archaeology, University of York, York, UK., Catchen JM; Department of Evolution, Ecology, and Behavior, University of Illinois at Urbana-Champaign, Champaign, IL, USA., Machado D; Department of Biotechnology and Food Science, Norwegian University of Science and Technology, Trondheim, 7491, Norway., Nowak MD; Natural History Museum, University of Oslo, Oslo, Norway., Suh A; School of Biological Sciences, University of East Anglia, Norwich Research Park, NR4 7TU, Norwich, UK.; Department of Organismal Biology, Evolutionary Biology Centre (EBC), Science for Life Laboratory, Uppsala University, 75236, Uppsala, Sweden., Sinha NR; Department of Plant Biology, University of California, Davis, Davis, CA, 95616, USA., Nielsen LR; Department of Geosciences and Natural Resource Management, University of Copenhagen, Rolighedsvej 23, 1958, Frederiksberg C, Denmark., Seberg O; The Natural History Museum of Denmark, University of Copenhagen, Copenhagen, Denmark., Gilbert MTP; Department of Natural History, NTNU University Museum, Norwegian University of Science and Technology, Trondheim, Norway.; Centre for Evolutionary Hologenomics, The GLOBE Institute, Faculty of Health and Medical Sciences, University of Copenhagen, Øster Farimagsgade 5, 1353, Copenhagen, Denmark., Leebens-Mack JH; Department of Plant Biology, University of Georgia, Athens, GA, 30602, USA., Rieseberg LH; Department of Botany and Biodiversity Research Centre, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada., Martin MD; Department of Natural History, NTNU University Museum, Norwegian University of Science and Technology, Trondheim, Norway. mike.martin@ntnu.no.
Jazyk: angličtina
Zdroj: Nature communications [Nat Commun] 2022 Jun 28; Vol. 13 (1), pp. 3729. Date of Electronic Publication: 2022 Jun 28.
DOI: 10.1038/s41467-022-31280-w
Abstrakt: The repeated, rapid and often pronounced patterns of evolutionary divergence observed in insular plants, or the 'plant island syndrome', include changes in leaf phenotypes, growth, as well as the acquisition of a perennial lifestyle. Here, we sequence and describe the genome of the critically endangered, Galápagos-endemic species Scalesia atractyloides Arnot., obtaining a chromosome-resolved, 3.2-Gbp assembly containing 43,093 candidate gene models. Using a combination of fossil transposable elements, k-mer spectra analyses and orthologue assignment, we identify the two ancestral genomes, and date their divergence and the polyploidization event, concluding that the ancestor of all extant Scalesia species was an allotetraploid. There are a comparable number of genes and transposable elements across the two subgenomes, and while their synteny has been mostly conserved, we find multiple inversions that may have facilitated adaptation. We identify clear signatures of selection across genes associated with vascular development, growth, adaptation to salinity and flowering time, thus finding compelling evidence for a genomic basis of the island syndrome in one of Darwin's giant daisies.
(© 2022. The Author(s).)
Databáze: MEDLINE
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