Journal
CHROMOSOMA
Volume 119, Issue 4, Pages 435-442Publisher
SPRINGER
DOI: 10.1007/s00412-010-0269-6
Keywords
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Funding
- National Science Foundation [DBI-0604907]
- Ministry of Education, the People's Republic of China
- USDA
- NSF [DEB 0316614]
- USDA National Research Initiative [2008-35300-18669]
- CNR-Institute of Plant Genetics
- Division Of Integrative Organismal Systems
- Direct For Biological Sciences [0834044] Funding Source: National Science Foundation
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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.
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