TAILIEUCHUNG - Báo cáo y học: "A fruitful outcome to the papaya genome project"

Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Critical Care giúp cho các bạn có thêm kiến thức về ngành y học đề tài: A fruitful outcome to the papaya genome project. | Minireview A fruitful outcome to the papaya genome project Fusheng Wei and Rod A Wing Address Department of Plant Sciences and the Arizona Genomics Institute University of Arizona Tucson AZ 85721 USA. Correspondence Rod A Wing. Email rwing@ Published 6 June 2008 Genome Biology 2008 9 227 doi gb-2008-9-6-227 The electronic version of this article is the complete one and can be found online at http 2008 9 6 227 2008 BioMed Central Ltd Abstract The draft genome sequence of a transgenic virus-resistant papaya marks the first genome sequence of a commercially important transgenic crop plant. The nice thing about working with some plant genomes is that at the end of the day you can eat the fruits of your work. Originating from Central and South America the papaya Carica papaya bears highly nutritious and delicious fruit and is also a source of papain - a protease used for centuries to tenderize meat. Papaya trees can grow 5-10 meters tall with large leaves 50-70 cm in diameter and fruits 15-45 cm long and 10-30 cm in diameter Figure 1 . The papaya is grown as a crop in tropical and subtropical regions but its cultivation has been severely hampered by the papaya ringspot virus PRSV Figure 2 . In Hawaii papaya cultivation was almost completely destroyed by the virus until the introduction of virus-resistant transgenic lines in 1998. Now 80 of the Hawaiian papaya crop is transgenic 1 . A draft genome sequence and analysis of the transgenic papaya variety SunUp has now been published by Ray Ming and co-workers 2 . In regard to genomics the papaya is an ideal and interesting species to work with. It has a very small diploid genome of 372 Mb 3 slightly smaller than rice 4 and six times smaller than maize 5 . The papaya belongs to the order Brassicales which includes the model plant Arabidopsis as well as the cabbage family it shared a common ancestor with Arabidopsis approximately 72 million years ago 6 . The papaya can also be easily .

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