Genomic history and ecology of the geographic spread of rice.,Nature Plants

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Genomic history and ecology of the geographic spread of rice.
Nature Plants ( IF 18.0 ) Pub Date : 2020-05-15 , DOI: 10.1038/s41477-020-0659-6
Rafal M Gutaker ₁ , Simon C Groen ₁ , Emily S Bellis ₂ , Jae Y Choi ₁ , Inês S Pires _{1,

3} , R Kyle Bocinsky ₄ , Emma R Slayton ₅ , Olivia Wilkins _{1,

6} , Cristina C Castillo _{7,

8} , Sónia Negrão ₉ , M Margarida Oliveira ₃ , Dorian Q Fuller _{7,

8} , Jade A d'Alpoim Guedes ₁₀ , Jesse R Lasky ₂ , Michael D Purugganan _{1,

11}

Affiliation

Center for Genomics and Systems Biology, New York University, New York, NY, USA.
Department of Biology, Pennsylvania State University, University Park, PA, USA.
Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Lisbon, Portugal.
Crow Canyon Archaeological Center, Cortez, CO, USA.
Carnegie Mellon University Libraries, Pittsburgh, PA, USA.
Department of Biological Sciences, University of Manitoba, Winnipeg, Manitoba, Canada.
Institute of Archaeology, University College London, London, United Kingdom.
School of Cultural Heritage, North-West University, Xi'an, China.
School of Biology and Environmental Science, University College Dublin, Dublin, Ireland.
Department of Anthropology and Scripps Institution of Oceanography, University of California, San Diego, CA, USA.
Institute for the Study of the Ancient World, New York University, New York, NY, USA.

Rice (Oryza sativa) is one of the world's most important food crops, and is comprised largely of japonica and indica subspecies. Here, we reconstruct the history of rice dispersal in Asia using whole-genome sequences of more than 1,400 landraces, coupled with geographic, environmental, archaeobotanical and paleoclimate data. Originating around 9,000 yr ago in the Yangtze Valley, rice diversified into temperate and tropical japonica rice during a global cooling event about 4,200 yr ago. Soon after, tropical japonica rice reached Southeast Asia, where it rapidly diversified, starting about 2,500 yr BP. The history of indica rice dispersal appears more complicated, moving into China around 2,000 yr BP. We also identify extrinsic factors that influence genome diversity, with temperature being a leading abiotic factor. Reconstructing the dispersal history of rice and its climatic correlates may help identify genetic adaptations associated with the spread of a key domesticated species.

更新日期：2020-05-15

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