期刊
CELL
卷 184, 期 5, 页码 1156-+出版社
CELL PRESS
DOI: 10.1016/j.cell.2021.01.013
关键词
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资金
- National Natural Science Foundation of China [31788103]
- Chinese Academy of Sciences [XDA24030504, XDA24040201]
- National Key Research and Development Program of China [2016YFD0101800]
- National Transgenic Science and Technology Program of China [2019ZX08010-003, 2019ZX08010-001]
The study presents a strategy for de novo domestication of wild allotetraploid rice and establishes necessary resources for this purpose, demonstrating the rapid improvement of agronomically important traits through gene editing.
Cultivated rice varieties are all diploid, and polyploidization of rice has long been desired because of its advantages in genome buffering, vigorousness, and environmental robustness. However, a workable route remains elusive. Here, we describe a practical strategy, namely de novo domestication of wild allotetraploid rice. By screening allotetraploid wild rice inventory, we identified one genotype of Oryza alta (CCDD), polyploid rice 1 (PPR1), and established two important resources for its de novo domestication: (1) an efficient tissue culture, transformation, and genome editing system and (2) a high-quality genome assembly discriminated into two subgenomes of 12 chromosomes apiece. With these resources, we show that six agronomically important traits could be rapidly improved by editing O. alta homologs of the genes controlling these traits in diploid rice. Our results demonstrate the possibility that de novo domesticated allotetraploid rice can be developed into a new staple cereal to strengthen world food security.
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