| Literature DB >> 31043755 |
David J Bertioli1,2,3, Jerry Jenkins4, Josh Clevenger5,6,7, Olga Dudchenko8, Dongying Gao5, Guillermo Seijo9,10, Soraya C M Leal-Bertioli5,6,11, Longhui Ren12, Andrew D Farmer13, Manish K Pandey14, Sergio S Samoluk9,10, Brian Abernathy5, Gaurav Agarwal11, Carolina Ballén-Taborda6, Connor Cameron13, Jacqueline Campbell15, Carolina Chavarro5,6, Annapurna Chitikineni14, Ye Chu16, Sudhansu Dash13, Moaine El Baidouri17,18, Baozhu Guo19, Wei Huang15, Kyung Do Kim5,20, Walid Korani5, Sophie Lanciano18,21,22, Christopher G Lui8, Marie Mirouze18,21,22, Márcio C Moretzsohn23, Melanie Pham8, Jin Hee Shin5,20, Kenta Shirasawa24, Senjuti Sinharoy25, Avinash Sreedasyam4, Nathan T Weeks26, Xinyou Zhang27,28, Zheng Zheng27,28, Ziqi Sun27,28, Lutz Froenicke29, Erez L Aiden8, Richard Michelmore29, Rajeev K Varshney14, C Corley Holbrook30, Ethalinda K S Cannon15, Brian E Scheffler31, Jane Grimwood4, Peggy Ozias-Akins6,16, Steven B Cannon26, Scott A Jackson32,33,34, Jeremy Schmutz35,36.
Abstract
Like many other crops, the cultivated peanut (Arachis hypogaea L.) is of hybrid origin and has a polyploid genome that contains essentially complete sets of chromosomes from two ancestral species. Here we report the genome sequence of peanut and show that after its polyploid origin, the genome has evolved through mobile-element activity, deletions and by the flow of genetic information between corresponding ancestral chromosomes (that is, homeologous recombination). Uniformity of patterns of homeologous recombination at the ends of chromosomes favors a single origin for cultivated peanut and its wild counterpart A. monticola. However, through much of the genome, homeologous recombination has created diversity. Using new polyploid hybrids made from the ancestral species, we show how this can generate phenotypic changes such as spontaneous changes in the color of the flowers. We suggest that diversity generated by these genetic mechanisms helped to favor the domestication of the polyploid A. hypogaea over other diploid Arachis species cultivated by humans.Entities:
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Year: 2019 PMID： 31043755 DOI： 10.1038/s41588-019-0405-z
Source DB: PubMed Journal: Nat Genet ISSN： 1061-4036 Impact factor: 38.330