Murdoch University Research Repository

Welcome to the Murdoch University Research Repository

The Murdoch University Research Repository is an open access digital collection of research
created by Murdoch University staff, researchers and postgraduate students.

Learn more

The genome sequence of segmental allotetraploid peanut Arachis hypogaea

Bertioli, D.J., Jenkins, J., Clevenger, J., Dudchenko, O., Gao, D., Seijo, G., Leal-Bertioli, S.C.M., Ren, L., Farmer, A.D., Pandey, M.K., Samoluk, S.S., Abernathy, B., Agarwal, G., Ballén-Taborda, C., Cameron, C., Campbell, J., Chavarro, C., Chitikineni, A., Chu, Y., Dash, S., El Baidouri, M., Guo, B., Huang, W., Kim, K.D., Korani, W., Lanciano, S., Lui, C.G., Mirouze, M., Moretzsohn, M.C., Pham, M., Shin, J.H., Shirasawa, K., Sinharoy, S., Sreedasyam, A., Weeks, N.T., Zhang, X., Zheng, Z., Sun, Z., Froenicke, L., Aiden, E.L., Michelmore, R., Varshney, R.K.ORCID: 0000-0002-4562-9131, Holbrook, C.C., Cannon, E.K.S., Scheffler, B.E., Grimwood, J., Ozias-Akins, P., Cannon, S.B., Jackson, S.A. and Schmutz, J. (2019) The genome sequence of segmental allotetraploid peanut Arachis hypogaea. Nature Genetics, 51 (5). pp. 877-884.

[img]
Preview
PDF - Published Version
Download (8MB) | Preview
Free to read: https://doi.org/10.1038/s41588-019-0405-z
*No subscription required

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.

Item Type: Journal Article
Publisher: Nature Publishing Group
Copyright: © 2019 Springer Nature Limited
URI: http://researchrepository.murdoch.edu.au/id/eprint/60457
Item Control Page Item Control Page

Downloads

Downloads per month over past year