SAMOLUK Sergio Sebastian
The genome sequence of segmental allotetraploid peanut Arachis hypogaea
BERTIOLI DJ; JERRY JENKINS; CLEVENGER J; DUDCHENKO O; GAO D; SEIJO JG; LEAL- BERTIOLI SCM; REN L; FARMER A; PANDEY M; SAMOLUK SS; ABERNATHY B; AGARWAL G; BALLEN-TABORDA C; CAMERON C; CAMPBELL J; CHAVARRO C; CHITIKINENI A; CHU Y; DASH S; EL BAIDOURI M; GUO B; HUANG W; KIM KD; KORANI W; LANCIANO S; LUI C; MIROUZE M; MORETZSOHN M; PHAM M; SHIN JH; SHIRASAWA K; SINHAROY S; SREEDASYAM A; WEEKS N; ZHANG X; ZHENG Z; SUN Z; FROENICKE L; AIDEN E; MICHELMORE R ; VARSHNEY R; HOLBROOK C; CANNON E ; SCHEFFLER B ; GRIMWOOD J ; OZIAS-AKINS P; CANNON S; JACKSON SA; SCHMUTZ J
NATURE PUBLISHING GROUP
Lugar: Londres; Año: 2019 vol. 51 p. 877 - 877
Like many other crops, the cultivated peanut (Arachis hypogaea L.) is of hybrid origin and has a polyploid genome that containsessentially complete sets of chromosomes from two ancestral species. Here we report the genome sequence of peanut and showthat after its polyploid origin, the genome has evolved through mobile-element activity, deletions and by the flow of geneticinformation between corresponding ancestral chromosomes (that is, homeologous recombination). Uniformity of patterns ofhomeologous recombination at the ends of chromosomes favors a single origin for cultivated peanut and its wild counterpartA. monticola. However, through much of the genome, homeologous recombination has created diversity. Using new polyploidhybrids made from the ancestral species, we show how this can generate phenotypic changes such as spontaneous changes inthe color of the flowers. We suggest that diversity generated by these genetic mechanisms helped to favor the domestication ofthe polyploid A. hypogaea over other diploid Arachis species cultivated by humans.