Theoretical and Applied Genetics

, Volume 108, Issue 6, pp 1064–1070 | Cite as

Microsatellite identification and characterization in peanut (A. hypogaea L.)

  • M. E. FergusonEmail author
  • M. D. Burow
  • S. R. Schulze
  • P. J. Bramel
  • A. H. Paterson
  • S. Kresovich
  • S. Mitchell
Original Paper


A major constraint to the application of biotechnology to the improvement of the allotetraploid peanut, or groundnut (Arachis hypogaea L.), has been the paucity of polymorphism among germplasm lines using biochemical (seed proteins, isozymes) and DNA markers (RFLPs and RAPDs). Six sequence-tagged microsatellite (STMS) markers were previously available that revealed polymorphism in cultivated peanut. Here, we identify and characterize 110 STMS markers that reveal genetic variation in a diverse array of 24 peanut landraces. The simple-sequence repeats (SSRs) were identified with a probe of two 27,648-clone genomic libraries: one constructed using PstI and the other using Sau3AI/BamHI. The most frequent, repeat motifs identified were ATT and GA, which represented 29% and 28%, respectively, of all SSRs identified. These were followed by AT, CTT, and GT. Of the amplifiable primers, 81% of ATT and 70.8% of GA repeats were polymorphic in the cultivated peanut test array. The repeat motif AT showed the maximum number of alleles per locus (5.7). Motifs ATT, GT, and GA had a mean number of alleles per locus of 4.8, 3.8, and 3.6, respectively. The high mean number of alleles per polymorphic locus, combined with their relative frequency in the genome and amenability to probing, make ATT and GA the most useful and appropriate motifs to target to generate further SSR markers for peanut.


Genomic Library Polymorphism Information Content Repeat Motif Germplasm Line Botanical Variety 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



The authors are grateful to Scott Lee, Manisha Singh, and Shiwanand Varma for technical assistance. The project was funded under a USAID linkage grant to ICRISAT.

Supplementary material

supp.pdf (27 kb)
Description of Electronic Supplementary material (PDF 21 KB)
sequences.xls (723 kb)
“All sequences” (Excel 740 KB)
peanut.mdb (3.8 mb)
“Peanut SSRs” (MS Access 4 MB)


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Copyright information

© Springer-Verlag 2003

Authors and Affiliations

  • M. E. Ferguson
    • 1
    • 7
    Email author
  • M. D. Burow
    • 2
    • 6
  • S. R. Schulze
    • 3
  • P. J. Bramel
    • 4
  • A. H. Paterson
    • 3
  • S. Kresovich
    • 5
  • S. Mitchell
    • 5
  1. 1.International Crops Research Institute for the Semi-Arid Tropics (ICRISAT)PatancheruIndia
  2. 2.Department of Crop and Soil ScienceUniversity of GeorgiaAthensUSA
  3. 3.Departments of Crop and Soil Science, Botany and Genetics, Center for Applied Genetic TechnologiesUniversity of GeorgiaAthensUSA
  4. 4.KISRSafatKuwait
  5. 5.Institute for Genomic DiversityCornell UniversityIthacaUSA
  6. 6.Texas Agricultural Experiment StationTexas A&M UniversityLubbockUSA
  7. 7.International Institute for Tropical Agriculture (IITA)NairobiKenya

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