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Article
The B73 Maize Genome: Complexity, Diversity, and Dynamics
Science
  • Patrick S. Schnable, Iowa State University
  • Doreen Ware, U.S. Department of Agriculture
  • Kai Ying, Iowa State University
  • Cheng-Ting Yeh, Iowa State University
  • Scott J. Emrich, Iowa State University
  • Yi Jia, Iowa State University
  • Ananth Kalyanaraman, Iowa State University
  • An-Ping Hsia, Iowa State University
  • Yan Fu, Iowa State University
  • Sanzhen Liu, Iowa State University
  • Alan M. Myers, Iowa State University
  • Dan Nettleton, Iowa State University
  • Srinivas Aluru, Iowa State University
  • et al., et al.
Document Type
Article
Publication Version
Published Version
Publication Date
11-20-2009
DOI
10.1126/science.1178534
Abstract

We report an improved draft nucleotide sequence of the 2.3-gigabase genome of maize, an important crop plant and model for biological research. Over 32,000 genes were predicted, of which 99.8% were placed on reference chromosomes. Nearly 85% of the genome is composed of hundreds of families of transposable elements, dispersed nonuniformly across the genome. These were responsible for the capture and amplification of numerous gene fragments and affect the composition, sizes, and positions of centromeres. We also report on the correlation of methylation-poor regions with Mu transposon insertions and recombination, and copy number variants with insertions and/or deletions, as well as how uneven gene losses between duplicated regions were involved in returning an ancient allotetraploid to a genetically diploid state. These analyses inform and set the stage for further investigations to improve our understanding of the domestication and agricultural improvements of maize.

Comments

This article is published as Schnable, Patrick S., Doreen Ware, Robert S. Fulton, Joshua C. Stein, Fusheng Wei, Shiran Pasternak, Chengzhi Liang et al. "The B73 maize genome: complexity, diversity, and dynamics." science 326, no. 5956 (2009): 1112-1115. doi: 10.1126/science.1178534.

Rights
Works produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted.
Language
en
File Format
application/pdf
Citation Information
Patrick S. Schnable, Doreen Ware, Kai Ying, Cheng-Ting Yeh, et al.. "The B73 Maize Genome: Complexity, Diversity, and Dynamics" Science Vol. 326 Iss. 5956 (2009) p. 1112 - 1115
Available at: http://works.bepress.com/dan-nettleton/81/