|Moretzsohn, Marcio De|
Submitted to: Genomics of Tropical Crop Plants
Publication Type: Book / Chapter
Publication Acceptance Date: 10/1/2007
Publication Date: 2/4/2008
Citation: Burow, M.D., Selvaraj, M.G., Upadhyaya, H., Ozias-Akins, P., Guo, B., Bertioli, D.J., Leal-Bertioli, S.C., Moretzsohn, M.D.C., Guimaraes, P.M. 2008. Genomics of peanut, a major source of oil and protein. In: Moore, P.M., Ming, R. (eds.). Genomics of Tropical Crop Plants. New York, Springer. p. 421-440. Interpretive Summary: Peanut genomics is beginning to make the progress needed for greater utility in genetic improvement. There is increased realization of the genetic variability present in the genus, both in the cultivated and wild species. Development of SSR (simple sequence repeat) markers has been successful in identifying this variation, making marker work in both the cultivated and wild species more facile. The development of tools in parallel for the cultivated and A and B genome diploids will help in simplifying the work of understanding the organization and evolution of peanut. Construction of multiple cDNA and genomic libraries and the beginnings of significant sequencing is making data available that can be used for multiple projects. Identification of EST (expressed sequence tag) unigene sets and genomic sequences will be useful, especially in comparison with sequencing of the Medicago and soybean genomes. Identification of critical gene pathways and specific genes will be useful for conventional and transgenic improvement programs.
Technical Abstract: Peanut is the second-most important grain legume cultivated, of importance for being a source of oil and protein. The perceived lack of variation in the cultivated species has resulted in a focus until recently on characterization and mapping of wild species, and on transformation of peanut with genes for improved disease resistance. With development of SSR and potentially SNP-based markers and improved minicore collections, the focus is shifting towards the molecular characterization of the cultivated species. The development of large-inset libraries, EST, genomic clone libraries, and TILLING resources and bioinformatics is expected to advance peanut genomics.