A domestication history of dynamic adaptation and genomic deterioration in Sorghum

Oliver Smith, William Nicholson, Logan Kistler, Emma Mace, Alan Clapham, Pamela Rose, Chris Stevens, Roselyn Ware, Siva Samavedam, Guy Barker, David Jordan, Dorian Q. Fuller, Robin G. Allaby (Lead / Corresponding author)

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The evolution of domesticated cereals was a complex interaction of shifting selection pressures and repeated episodes of introgression. Genomes of archaeological crops have the potential to reveal these dynamics without being obscured by recent breeding or introgression. We report a temporal series of archaeogenomes of the crop sorghum (Sorghum bicolor) from a single locality in Egyptian Nubia. These data indicate no evidence for the effects of a domestication bottleneck, but instead reveal a steady decline in genetic diversity over time coupled with an accumulating mutation load. Dynamic selection pressures acted sequentially to shape architectural and nutritional domestication traits and to facilitate adaptation to the local environment. Later introgression between sorghum races allowed the exchange of adaptive traits and achieved mutual genomic rescue through an ameliorated mutation load. These results reveal a model of domestication in which genomic adaptation and deterioration were not focused on the initial stages of domestication but occurred throughout the history of cultivation.

Original languageEnglish
Pages (from-to)369-379
Number of pages11
JournalNature Plants
Volume5
Issue number4
DOIs
Publication statusPublished - 8 Apr 2019

Fingerprint

domestication
Sorghum (Poaceae)
deterioration
introgression
genomics
mutation
crops
Sorghum bicolor
genetic variation
history
genome
breeding
selection pressure

Keywords

  • Adaptation, Physiological/genetics
  • Crops, Agricultural/genetics
  • Domestication
  • History, Ancient
  • Hybridization, Genetic/genetics
  • Quantitative Trait, Heritable
  • Sorghum/genetics

Cite this

Smith, O., Nicholson, W., Kistler, L., Mace, E., Clapham, A., Rose, P., ... Allaby, R. G. (2019). A domestication history of dynamic adaptation and genomic deterioration in Sorghum. Nature Plants, 5(4), 369-379. https://doi.org/10.1038/s41477-019-0397-9
Smith, Oliver ; Nicholson, William ; Kistler, Logan ; Mace, Emma ; Clapham, Alan ; Rose, Pamela ; Stevens, Chris ; Ware, Roselyn ; Samavedam, Siva ; Barker, Guy ; Jordan, David ; Fuller, Dorian Q. ; Allaby, Robin G. / A domestication history of dynamic adaptation and genomic deterioration in Sorghum. In: Nature Plants. 2019 ; Vol. 5, No. 4. pp. 369-379.
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Smith, O, Nicholson, W, Kistler, L, Mace, E, Clapham, A, Rose, P, Stevens, C, Ware, R, Samavedam, S, Barker, G, Jordan, D, Fuller, DQ & Allaby, RG 2019, 'A domestication history of dynamic adaptation and genomic deterioration in Sorghum', Nature Plants, vol. 5, no. 4, pp. 369-379. https://doi.org/10.1038/s41477-019-0397-9

A domestication history of dynamic adaptation and genomic deterioration in Sorghum. / Smith, Oliver; Nicholson, William; Kistler, Logan; Mace, Emma; Clapham, Alan; Rose, Pamela; Stevens, Chris; Ware, Roselyn; Samavedam, Siva; Barker, Guy; Jordan, David; Fuller, Dorian Q.; Allaby, Robin G. (Lead / Corresponding author).

In: Nature Plants, Vol. 5, No. 4, 08.04.2019, p. 369-379.

Research output: Contribution to journalArticle

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Smith O, Nicholson W, Kistler L, Mace E, Clapham A, Rose P et al. A domestication history of dynamic adaptation and genomic deterioration in Sorghum. Nature Plants. 2019 Apr 8;5(4):369-379. https://doi.org/10.1038/s41477-019-0397-9