Multiple Domestications of Asian Rice

Overview

Journal Nat Plants

Specialties Biology
Genetics

Date 2023 Aug 7

PMID 37550371

Authors

Chun-Yan Jing

Fu-Min Zhang

Xiu-Hua Wang

Mei-Xia Wang

Lian Zhou

Zhe Cai

Jing-Dan Han

Mu-Fan Geng

Wen-Hao Yu

Zi-Hui Jiao

Lei Huang

Rong Liu

Xiao-Ming Zheng

Qing-Lin Meng

Ning-Ning Ren

Hong-Xiang Zhang

Yu-Su Du

Xin Wang

Cheng-Gen Qiang

Xin-Hui Zou

Brandon S Gaut

Song Ge

Affiliations

Soon will be listed here.

Abstract

The origin of domesticated Asian rice (Oryza sativa L.) has been controversial for more than half a century. The debates have focused on two leading hypotheses: a single domestication event in China or multiple domestication events in geographically separate areas. These two hypotheses differ in their predicted history of genes/alleles selected during domestication. Here we amassed a dataset of 1,578 resequenced genomes, including an expanded sample of wild rice from throughout its geographic range. We identified 993 selected genes that generated phylogenetic trees on which japonica and indica formed a monophyletic group, suggesting that the domestication alleles of these genes originated only once in either japonica or indica. Importantly, the domestication alleles of most selected genes (~80%) stemmed from wild rice in China, but the domestication alleles of a substantial minority of selected genes (~20%) originated from wild rice in South and Southeast Asia, demonstrating separate domestication events of Asian rice.

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