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Evidence that rice and other cereals are ancient aneuploids

Klaas Vandepoele (UGent), Cedric Simillion (UGent) and Yves Van de Peer (UGent)
(2003) PLANT CELL. 15(9). p.2192-2202
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Abstract
Detailed analyses of the genomes of several model organisms revealed that large-scale gene or even entire-genome duplications have played prominent roles in the evolutionary history of many eukaryotes. Recently, strong evidence has been presented that the genomic structure of the dicotyledonous model plant species Arabidopsis is the result of multiple rounds of entire-genome duplications. Here, we analyze the genome of the monocotyledonous model plant species rice, for which a draft of the genomic sequence was published recently. We show that a substantial fraction of all rice genes (similar to15%) are found in duplicated segments. Dating of these block duplications, their nonuniform distribution over the different rice chromosomes, and comparison with the duplication history of Arabidopsis suggest that rice is not an ancient polyploid, as suggested previously, but an ancient aneuploid that has experienced the duplication of one-or a large part of one-chromosome in its evolutionary past, similar to70 million years ago. This date predates the divergence of most of the cereals, and relative dating by phylogenetic analysis shows that this duplication event is shared by most if not all of them.
Keywords
CHROMOSOMAL DUPLICATION, ARABIDOPSIS-THALIANA, GENOME SEQUENCE, MOLECULAR CLOCK, DRAFT SEQUENCE, GRASS GENOMES, GENETIC-MAP, EVOLUTION, SEGMENTS, MAIZE

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Chicago
Vandepoele, Klaas, Cedric Simillion, and Yves Van de Peer. 2003. “Evidence That Rice and Other Cereals Are Ancient Aneuploids.” Plant Cell 15 (9): 2192–2202.
APA
Vandepoele, K., Simillion, C., & Van de Peer, Y. (2003). Evidence that rice and other cereals are ancient aneuploids. PLANT CELL, 15(9), 2192–2202.
Vancouver
1.
Vandepoele K, Simillion C, Van de Peer Y. Evidence that rice and other cereals are ancient aneuploids. PLANT CELL. 2003;15(9):2192–202.
MLA
Vandepoele, Klaas, Cedric Simillion, and Yves Van de Peer. “Evidence That Rice and Other Cereals Are Ancient Aneuploids.” PLANT CELL 15.9 (2003): 2192–2202. Print.
@article{215088,
  abstract     = {Detailed analyses of the genomes of several model organisms revealed that large-scale gene or even entire-genome duplications have played prominent roles in the evolutionary history of many eukaryotes. Recently, strong evidence has been presented that the genomic structure of the dicotyledonous model plant species Arabidopsis is the result of multiple rounds of entire-genome duplications. Here, we analyze the genome of the monocotyledonous model plant species rice, for which a draft of the genomic sequence was published recently. We show that a substantial fraction of all rice genes (similar to15\%) are found in duplicated segments. Dating of these block duplications, their nonuniform distribution over the different rice chromosomes, and comparison with the duplication history of Arabidopsis suggest that rice is not an ancient polyploid, as suggested previously, but an ancient aneuploid that has experienced the duplication of one-or a large part of one-chromosome in its evolutionary past, similar to70 million years ago. This date predates the divergence of most of the cereals, and relative dating by phylogenetic analysis shows that this duplication event is shared by most if not all of them.},
  author       = {Vandepoele, Klaas and Simillion, Cedric and Van de Peer, Yves},
  issn         = {1040-4651},
  journal      = {PLANT CELL},
  keyword      = {CHROMOSOMAL DUPLICATION,ARABIDOPSIS-THALIANA,GENOME SEQUENCE,MOLECULAR CLOCK,DRAFT SEQUENCE,GRASS GENOMES,GENETIC-MAP,EVOLUTION,SEGMENTS,MAIZE},
  language     = {eng},
  number       = {9},
  pages        = {2192--2202},
  title        = {Evidence that rice and other cereals are ancient aneuploids},
  url          = {http://dx.doi.org/10.1105/tpc.014019},
  volume       = {15},
  year         = {2003},
}

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