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Chromosome evolution and the genetic basis of agronomically important traits in greater yam

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Title Chromosome evolution and the genetic basis of agronomically important traits in greater yam
 
Creator Bredeson, J.V.
Lyons, J.B.
Oniyinde, I.O.
Okereke, N.R.
Kolade, O.
Nnabue, I.
Nwadili, C.O.
Hřibová, E.
Parker, M.
Nwogha, J.
Shu, S.
Carlson, J.
Kariba, R.
Muthemba, S.
Knop, K.
Barton, G.J.
Sherwood, A.V.
López Montes, A.
Asiedu, R.
Jamnadass, Ramni
Muchugi, A.
Goodstein, D.
Egesi, Chiedozie N.
Featherston, J.
Asfaw, A.
Simpson, G.G.
Doležel, J.
Hendre, P.S.
Deynze, A. van
Kumar, P. Lava
Obidiegwu, J.E.
Bhattacharjee, Ranjana
Rokhsar, D.S.
 
Subject orphan crops
agronomy
 
Description The nutrient-rich tubers of the greater yam Dioscorea alata L. provide food and income security for millions of people around the world. Despite its global importance, however, greater yam remains an “orphan crop.” Here we address this resource gap by presenting a highly-contiguous chromosome-scale genome assembly of greater yam combined with a dense genetic map derived from African breeding populations. The genome sequence reveals an ancient lineage-specific genome duplication, followed by extensive genome-wide reorganization. Using our new genomic tools we find quantitative trait loci for susceptibility to anthracnose, a damaging fungal pathogen of yam, and several tuber quality traits. Genomic analysis of breeding lines reveals both extensive inbreeding as well as regions of extensive heterozygosity that may represent interspecific introgression during domestication. These tools and insights will enable yam breeders to unlock the potential of this staple crop and take full advantage of its adaptability to varied environments.
 
Date 2022-04-14
2022-02-14T03:03:10Z
2022-02-14T03:03:10Z
 
Type Journal Article
 
Identifier Bredeson, J.V., Lyons, J.B., Oniyinde, I.O., Okereke, N.R., Kolade, O., Nnabue, I., Nwadili, C.O., Hřibová, E., Parker, M., Nwogha, J., Shu, S., Carlson, J., Kariba, R., Muthemba, S., Knop, K., Barton, G.J., Sherwood, A.V., Lopez-Montes, A., Asiedu, R., Jamnadass, R., Muchugi, A., Goodstein, D., Egesi, C.N., Featherston, J., Asfaw, A., Simpson, G.G., Doležel, J., Hendre, P.S., Van Deynze, A., Kumar, P.L., Obidiegwu, J.E., Bhattacharjee, R. and Rokhsar, D.S. 2022. Chromosome evolution and the genetic basis of agronomically important traits in greater yam. Nature Communications 13
https://hdl.handle.net/10568/118079
https://doi.org/10.1038/s41467-022-29114-w
 
Language en
 
Rights CC-BY-4.0
Open Access
 
Publisher Springer Science and Business Media LLC
 
Source Nature Communications