Molecular Breeding

, Volume 30, Issue 2, pp 661–669

Development of microsatellite markers in autopolyploid sugarcane and comparative analysis of conserved microsatellites in sorghum and sugarcane

  • Brandon T. James
  • Cuixia Chen
  • Arthur Rudolph
  • Kankshita Swaminathan
  • Jan E. Murray
  • Jong-Kuk Na
  • Ashley K. Spence
  • Brandon Smith
  • Matthew E. Hudson
  • Stephen P. Moose
  • Ray Ming
Article

DOI: 10.1007/s11032-011-9651-1

Cite this article as:
James, B.T., Chen, C., Rudolph, A. et al. Mol Breeding (2012) 30: 661. doi:10.1007/s11032-011-9651-1

Abstract

Sugarcane has become an increasingly important first-generation biofuel crop in tropical and subtropical regions. It has a large, complex, polyploid genome that has hindered the progress of genomic research and marker-assisted selection. Genetic mapping and ultimately genome sequence assembly require a large number of DNA markers. Simple sequence repeats (SSRs) are widely used in genetic mapping because of their abundance, high rates of polymorphism, and ease of use. The objectives of this study were to develop SSR markers for construction of a saturated genetic map and to characterize the frequency and distribution of SSRs in a polyploid genome. SSR markers were mined from expressed sequence tag (EST), reduced representation library genomic sequences, and bacterial artificial chromosome (BAC) sequences. A total of 5,675 SSR markers were surveyed in a segregating population. The overall successful amplification and polymorphic rates were 87.9 and 16.4%, respectively. The trinucleotide repeat motifs were most abundant, with tri- and hexanucleotide motifs being the most abundant for the ESTs. BAC and genomic SSRs were mostly AT-rich while the ESTs were relatively GC-rich due to codon bias. These markers were also aligned to the sorghum genome, resulting in 1,203 markers mapped in the sorghum genome. This set of SSRs conserved in sugarcane and sorghum would be the most informative for mapping quantitative trait loci in sugarcane and for comparative genomic analyses. This large collection of SSR markers is a valuable resource for sugarcane genomic research and crop improvement.

Keywords

DNA marker Genetic mapping Polyploid Short sequence repeat 

Supplementary material

11032_2011_9651_MOESM1_ESM.xls (2.6 mb)
Supplementary material 1 (XLS 2623 kb)
11032_2011_9651_MOESM2_ESM.xls (1.6 mb)
Supplementary material 2 (XLS 1619 kb)
11032_2011_9651_MOESM3_ESM.doc (70 kb)
Supplementary material 3 (DOC 70 kb)
11032_2011_9651_MOESM4_ESM.xls (676 kb)
Supplementary material 4 (XLS 676 kb)

Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  • Brandon T. James
    • 1
    • 2
  • Cuixia Chen
    • 2
  • Arthur Rudolph
    • 2
  • Kankshita Swaminathan
    • 2
  • Jan E. Murray
    • 1
  • Jong-Kuk Na
    • 1
  • Ashley K. Spence
    • 1
    • 2
  • Brandon Smith
    • 2
  • Matthew E. Hudson
    • 2
    • 3
  • Stephen P. Moose
    • 2
    • 3
  • Ray Ming
    • 1
    • 2
  1. 1.Department of Plant BiologyUniversity of Illinois at Urbana-ChampaignUrbanaUSA
  2. 2.Energy Biosciences Institute and Institute for Genomic BiologyUniversity of Illinois at Urbana-ChampaignUrbanaUSA
  3. 3.Department of Crop SciencesUniversity of Illinois at Urbana-ChampaignUrbanaUSA

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