Abstract
An ancient genome duplication (PPP1) that predates divergence of the cereals has recently been recognized. We report here another potentially older large-scale duplication (PPP2) event that predates monocot-dicot divergence in the genome of rice (Oryza sativa L.), as inferred from the age distribution of pairs of duplicate genes based on recent genome data for rice. Our results suggest that paleopolyploidy was widespread and played an important role in the evolution of rice.
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Project supported by the National Natural Science Foundation of China (Nos. 30270810, 90208022 and 30471067) and IBM Shared University Research (Life Science), China
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Zhang, Y., Xu, Gh., Guo, Xy. et al. Two ancient rounds of polyploidy in rice genome. J Zheijang Univ Sci B 6, 87–90 (2005). https://doi.org/10.1631/jzus.2005.B0087
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DOI: https://doi.org/10.1631/jzus.2005.B0087