Abstract
Maize (Zea mays L.) is one of the most important cereal crops and a model for the study of genetics, evolution, and domestication. To better understand maize genome organization and to build a framework for genome sequencing, we constructed a sequence-ready fingerprinted contig-based physical map that covers 93.5% of the genome, of which 86.1% is aligned to the genetic map. The fingerprinted contig map contains 25,908 genic markers that enabled us to align nearly 73% of the anchored maize genome to the rice genome. The distribution pattern of expressed sequence tags correlates to that of recombination. In collinear regions, 1 kb in rice corresponds to an average of 3.2 kb in maize, yet maize has a 6-fold genome size expansion. This can be explained by the fact that most rice regions correspond to two regions in maize as a result of its recent polyploid origin. Inversions account for the majority of chromosome structural variations during subsequent maize diploidization. We also find clear evidence of ancient genome duplication predating the divergence of the progenitors of maize and rice. Reconstructing the paleoethnobotany of the maize genome indicates that the progenitors of modern maize contained ten chromosomes.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1254-1263 |
| Number of pages | 10 |
| Journal | PLoS genetics |
| Volume | 3 |
| Issue number | 7 |
| DOIs | |
| State | Published - Jul 1 2007 |
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All Science Journal Classification (ASJC) codes
- Ecology, Evolution, Behavior and Systematics
- Molecular Biology
- Genetics
- Genetics(clinical)
- Cancer Research
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Physical and genetic structure of the maize genome reflects its complex evolutionary history. / Wei, Fusheng; Coe, Ed; Nelson, William; Bharti, Arvind K.; Engler, Fred; Butler, Ed; Kim, Hye Ran; Goicoechea, Jose Luis; Chen, Mingsheng; Lee, Seunghee; Fuks, Galina; Sanchez-Villeda, Hector; Schroeder, Steven; Fang, Zhiwei; McMullen, Michael; Davis, Georgia; Bowers, John E.; Paterson, Andrew H.; Schaeffer, Mary; Gardiner, Jack; Cone, Karen; Messing, Joachim; Soderlund, Carol; Wing, Rod A.
In: PLoS genetics, Vol. 3, No. 7, 01.07.2007, p. 1254-1263.Research output: Contribution to journal › Article
TY - JOUR
T1 - Physical and genetic structure of the maize genome reflects its complex evolutionary history
AU - Wei, Fusheng
AU - Coe, Ed
AU - Nelson, William
AU - Bharti, Arvind K.
AU - Engler, Fred
AU - Butler, Ed
AU - Kim, Hye Ran
AU - Goicoechea, Jose Luis
AU - Chen, Mingsheng
AU - Lee, Seunghee
AU - Fuks, Galina
AU - Sanchez-Villeda, Hector
AU - Schroeder, Steven
AU - Fang, Zhiwei
AU - McMullen, Michael
AU - Davis, Georgia
AU - Bowers, John E.
AU - Paterson, Andrew H.
AU - Schaeffer, Mary
AU - Gardiner, Jack
AU - Cone, Karen
AU - Messing, Joachim
AU - Soderlund, Carol
AU - Wing, Rod A.
PY - 2007/7/1
Y1 - 2007/7/1
N2 - Maize (Zea mays L.) is one of the most important cereal crops and a model for the study of genetics, evolution, and domestication. To better understand maize genome organization and to build a framework for genome sequencing, we constructed a sequence-ready fingerprinted contig-based physical map that covers 93.5% of the genome, of which 86.1% is aligned to the genetic map. The fingerprinted contig map contains 25,908 genic markers that enabled us to align nearly 73% of the anchored maize genome to the rice genome. The distribution pattern of expressed sequence tags correlates to that of recombination. In collinear regions, 1 kb in rice corresponds to an average of 3.2 kb in maize, yet maize has a 6-fold genome size expansion. This can be explained by the fact that most rice regions correspond to two regions in maize as a result of its recent polyploid origin. Inversions account for the majority of chromosome structural variations during subsequent maize diploidization. We also find clear evidence of ancient genome duplication predating the divergence of the progenitors of maize and rice. Reconstructing the paleoethnobotany of the maize genome indicates that the progenitors of modern maize contained ten chromosomes.
AB - Maize (Zea mays L.) is one of the most important cereal crops and a model for the study of genetics, evolution, and domestication. To better understand maize genome organization and to build a framework for genome sequencing, we constructed a sequence-ready fingerprinted contig-based physical map that covers 93.5% of the genome, of which 86.1% is aligned to the genetic map. The fingerprinted contig map contains 25,908 genic markers that enabled us to align nearly 73% of the anchored maize genome to the rice genome. The distribution pattern of expressed sequence tags correlates to that of recombination. In collinear regions, 1 kb in rice corresponds to an average of 3.2 kb in maize, yet maize has a 6-fold genome size expansion. This can be explained by the fact that most rice regions correspond to two regions in maize as a result of its recent polyploid origin. Inversions account for the majority of chromosome structural variations during subsequent maize diploidization. We also find clear evidence of ancient genome duplication predating the divergence of the progenitors of maize and rice. Reconstructing the paleoethnobotany of the maize genome indicates that the progenitors of modern maize contained ten chromosomes.
UR - http://www.scopus.com/inward/record.url?scp=34547634071&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=34547634071&partnerID=8YFLogxK
U2 - 10.1371/journal.pgen.0030123
DO - 10.1371/journal.pgen.0030123
M3 - Article
C2 - 17658954
AN - SCOPUS:34547634071
VL - 3
SP - 1254
EP - 1263
JO - PLoS Genetics
JF - PLoS Genetics
SN - 1553-7390
IS - 7
ER -