Genetics, Vol. 168, 447-461, September 2004, Copyright © 2004
doi:10.1534/genetics.104.028381

Comparative Mapping in the Pinaceae

* Institute of Forest Genetics, Pacific Southwest Research Station, U.S. Department of Agriculture Forest Service, Davis, California 95616
{dagger} Dipartimento di Scienze Ambientali, Universita' di Parma, 43100 Parma, Italy
{ddagger} Department of Environmental Horticulture, University of California, Davis, California 95616
§ Institute of Forest Genetics, Pacific Southwest Research Station, U.S. Department of Agriculture Forest Service, Placerville, California 95667

1 Corresponding author: Institute of Forest Genetics, Pacific Southwest Research Station, USDA Forest Service, Department of Environmental Horticulture, University of California, 1 Shields Ave., Davis, CA 95616.
E-mail: dbneale{at}ucdavis.edu

A comparative genetic map was constructed between two important genera of the family Pinaceae. Ten homologous linkage groups in loblolly pine (Pinus taeda L.) and Douglas fir (Pseudotsuga menziesii [Mirb.] Franco) were identified using orthologous expressed sequence tag polymorphism (ESTP) and restriction fragment length polymorphism (RFLP) markers. The comparative mapping revealed extensive synteny and colinearity between genomes of the Pinaceae, consistent with the hypothesis of conservative chromosomal evolution in this important plant family. This study reports the first comparative map in forest trees at the family taxonomic level and establishes a framework for comparative genomics in Pinaceae.




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