A comprehensive draft genome sequence for lupin (Lupinus angustifolius), an emerging health food: insights into plant–microbe interactions and legume evolution |
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| Authors: | Matthew N Nelson Gagan Garg Craig A Atkins Philipp E Bayer Armando Bravo Scott Bringans Steven Cannon David Edwards Rhonda Foley Ling‐ling Gao Maria J Harrison Wei Huang Bhavna Hurgobin Sean Li Cheng‐Wu Liu Annette McGrath Grant Morahan Jeremy Murray James Weller Jianbo Jian Karam B Singh |
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| Institution: | 1. UWA Institute of Agriculture, University of Western Australia, Crawley, WA, Australia;2. School of Plant Biology, University of Western Australia, Crawley, WA, Australia;3. CSIRO Agriculture, Wembley, WA, Australia;4. Boyce Thompson Institute for Plant Research, Ithaca, NY, USA;5. Proteomics International, Nedlands, WA, Australia;6. USDA‐ARS Corn Insects and Crop Genetics Research Unit, Crop Genome Informatics Lab, Iowa State University, Ames, IA, USA;7. Department of Agronomy, Iowa State University, Ames, IA, USA;8. University of Queensland, Brisbane, Qld, Australia;9. Data61, CSIRO, Canberra, ACT, Australia;10. John Innes Centre, Norwich Research Park, Norfolk, UK;11. Centre for Diabetes Research, University of Western Australia, Crawley, WA, Australia;12. School of Biological Sciences, University of Tasmania, Hobart, TAS, Australia;13. Department of Plant and Animal Genome Research, Beijing Genome Institute, Shenzhen, China |
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| Abstract: | Lupins are important grain legume crops that form a critical part of sustainable farming systems, reducing fertilizer use and providing disease breaks. It has a basal phylogenetic position relative to other crop and model legumes and a high speciation rate. Narrow‐leafed lupin (NLL; Lupinus angustifolius L.) is gaining popularity as a health food, which is high in protein and dietary fibre but low in starch and gluten‐free. We report the draft genome assembly (609 Mb) of NLL cultivar Tanjil, which has captured >98% of the gene content, sequences of additional lines and a dense genetic map. Lupins are unique among legumes and differ from most other land plants in that they do not form mycorrhizal associations. Remarkably, we find that NLL has lost all mycorrhiza‐specific genes, but has retained genes commonly required for mycorrhization and nodulation. In addition, the genome also provided candidate genes for key disease resistance and domestication traits. We also find evidence of a whole‐genome triplication at around 25 million years ago in the genistoid lineage leading to Lupinus. Our results will support detailed studies of legume evolution and accelerate lupin breeding programmes. |
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| Keywords: | Legume comparative genomics synteny whole‐genome assembly flowering time genes polyploidy Genistoids |
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