Chromosoma

, Volume 119, Issue 4, pp 435–442

Evolution of chromosome 6 of Solanum species revealed by comparative fluorescence in situ hybridization mapping

  • Qunfeng Lou
  • Marina Iovene
  • David M. Spooner
  • C. Robin Buell
  • Jiming Jiang
RESEARCH ARTICLE

Abstract

Comparative genetic linkage mapping using a common set of DNA markers in related species is an important methodology in plant genome research. Here, we demonstrate a comparative fluorescence in situ hybridization (FISH) mapping strategy in plants. A set of 13 bacterial artificial chromosome clones spanning the entire length of potato chromosome 6 was used for pachytene chromosome-based FISH mapping in seven distantly related Solanum species including potato, tomato, and eggplant. We discovered one paracentric inversion and one pericentric inversion within specific lineages of these species. The comparative FISH mapping data revealed the ancestral structure of this chromosome. We demonstrate that comparative FISH mapping is an efficient and powerful methodology to study chromosomal evolution among plant species diverged for up to 12 million years.

Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  • Qunfeng Lou
    • 1
    • 2
  • Marina Iovene
    • 1
  • David M. Spooner
    • 3
  • C. Robin Buell
    • 4
  • Jiming Jiang
    • 1
  1. 1.Department of HorticultureUniversity of Wisconsin—MadisonMadisonUSA
  2. 2.State Key Laboratory of Crop Genetics and Germplasm EnhancementNanjing Agricultural UniversityNanjingPeople’s Republic of China
  3. 3.U.S. Department of Agriculture—Agricultural Research Service, Vegetable Crops Unit, Department of HorticultureUniversity of WisconsinMadisonUSA
  4. 4.Department of Plant BiologyMichigan State UniversityEast LansingUSA

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