Origin of the Aromatic Group of Cultivated Rice (Oryza sativa L.) Traced to the Indian Subcontinent.
chloroplast genome
domestication
local ancestry inference
population genomics
Journal
Genome biology and evolution
ISSN: 1759-6653
Titre abrégé: Genome Biol Evol
Pays: England
ID NLM: 101509707
Informations de publication
Date de publication:
01 03 2019
01 03 2019
Historique:
accepted:
19
02
2019
pubmed:
23
2
2019
medline:
19
6
2019
entrez:
23
2
2019
Statut:
ppublish
Résumé
The aromatic group of Asian cultivated rice is a distinct population with considerable genetic diversity on the Indian subcontinent and includes the popular Basmati types characterized by pleasant fragrance. Genetic and phenotypic associations with other cultivated groups are ambiguous, obscuring the origin of the aromatic population. From analysis of genome-wide diversity among over 1,000 wild and cultivated rice accessions, we show that aromatic rice originated in the Indian subcontinent from hybridization between a local wild population and examples of domesticated japonica that had spread to the region from their own center of origin in East Asia. Most present-day aromatic accessions have inherited their cytoplasm along with 29-47% of their nuclear genome from the local Indian rice. We infer that the admixture occurred 4,000-2,400 years ago, soon after japonica rice reached the region. We identify aus as the original crop of the Indian subcontinent, indica and japonica as later arrivals, and aromatic a specific product of local agriculture. These results prompt a reappraisal of our understanding of the emergence and development of rice agriculture in the Indian subcontinent.
Identifiants
pubmed: 30793171
pii: 5355065
doi: 10.1093/gbe/evz039
pmc: PMC6427689
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
832-843Subventions
Organisme : European Research Council
ID : 339941
Pays : International
Informations de copyright
© The Author(s) 2019. Published by Oxford University Press on behalf of the Society for Molecular Biology and Evolution.
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