Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Wertheim cung cấp cho các bạn kiến thức về ngành y đề tài: Unfashionable crop species flourish in the 21st century. | Minireview Unfashionable crop species flourish in the 21st century Wayne Powell and Peter Langridge Addresses Scottish Crop Research Institute Invergowrie Dundee DD2 5DA UK. TThe Australian Centre for Plant Functional Genomics School of Agriculture and Wine Waite Campus University of Adelaide SA 5064 Australia. Correspondence Wayne Powell. E-mail Published 14 June 2004 Genome Biology 2004 5 233 The electronic version of this article is the complete one and can be found online at http 2004 5 7 233 2004 BioMed Central Ltd Abstract Genome-level studies are contributing to a major renaissance in crop science. In wheat there are now more than 500 000 expressed sequence tags and these are being used in conjunction with specially designed deletion stocks to unravel patterns of genome evolution recombination and polyploid genome behavior. The genomic era was founded on the study of a limited number of model organisms 1 that were chosen for their small genome size and experimental tractability. The use of model organisms can be powerful because a community of scientists can work collectively on a single organism but it also encourages a reductionist approach. Intriguingly the study of diversity and organism complexity is now gaining more prominence often at the expense of research on model organisms. The mapping of a large number of wheat expressed sequence tags ESTs 2 physical mapping of the wheat genome 3 studies of synteny between related parts of the wheat genome 4 5 and between wheat and other cereals 6 and studies of the organization of sequence polymorphism into haplotypes 7 are big steps forward. These developments in crop genomics vividly illustrate how although model organisms provide good starting points their significance may decline as accessibility to genome technologies improves and the social and biological relevance of crop science to the public continues to gain prominence. The complex wheat genome Before the
