The western Mediterranean region provided the founder population of domesticated narrow-leafed lupin |
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| Authors: | Mahsa Mousavi-Derazmahalleh Bruno Nevado Philipp E Bayer Dmitry A Filatov James K Hane David Edwards William Erskine Matthew N Nelson |
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| Institution: | 1.UWA School of Agriculture and Environment,The University of Western Australia,Crawley,Australia;2.Department of Plant Sciences,University of Oxford,Oxford,UK;3.School of Biological Sciences,The University of Western Australia,Crawley,Australia;4.CCDM Bioinformatics, Centre for Crop and Disease Management,Curtin University,Bentley,Australia;5.The UWA Institute of Agriculture, The University of Western Australia,Perth,Australia;6.Centre for Plant Genetics and Breeding, UWA School of Agriculture and Environment,The University of Western Australia,Crawley,Australia;7.Natural Capital and Plant Health, Royal Botanic Gardens Kew,Ardingly,UK |
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| Abstract: | Key messageThis study revealed that the western Mediterranean provided the founder population for domesticated narrow-leafed lupin and that genetic diversity decreased significantly during narrow-leafed lupin domestication.AbstractThe evolutionary history of plants during domestication profoundly shaped the genome structure and genetic diversity of today’s crops. Advances in next-generation sequencing technologies allow unprecedented opportunities to understand genome evolution in minor crops, which constitute the majority of plant domestications. A diverse set of 231 wild and domesticated narrow-leafed lupin (Lupinus angustifolius L.) accessions were subjected to genotyping-by-sequencing using diversity arrays technology. Phylogenetic, genome-wide divergence and linkage disequilibrium analyses were applied to identify the founder population of domesticated narrow-leafed lupin and the genome-wide effect of domestication on its genome. We found wild western Mediterranean population as the founder of domesticated narrow-leafed lupin. Domestication was associated with an almost threefold reduction in genome diversity in domesticated accessions compared to their wild relatives. Selective sweep analysis identified no significant footprints of selection around domestication loci. A genome-wide association study identified single nucleotide polymorphism markers associated with pod dehiscence. This new understanding of the genomic consequences of narrow-leafed lupin domestication along with molecular marker tools developed here will assist plant breeders more effectively access wild genetic diversity for crop improvement. |
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