Characterization of Genes and Promoters, Transformation and Transgenic Development in Sweet Potato
نویسندگان
چکیده
Sweet potato belongs to Ipomoea series batatas and is thought to have originated in Central America and Northern South America. World sweet potato production is around 106 million tons in an area of about 8.1 million ha. Asia is the world’s largest sweet potato-producing region and China is the world’s leading sweet potato-producing country accounting for about 76% of production. Sweet potato has not attracted the attention from modern geneticists that many other economically important crops have because of its high ploidy. The genes related to tuber storage protein, sporamin, sucrose metabolic genes, storage root-inducing genes, proteinase inhibitors, cystein proteniase, retrotranspogens, and senescence-related genes were studied in sweet potato; similarly, sporamin, wound regulated, peroxidase and GBSS promoters were used for developing transgenic plants. Transgenic plants sweet potato with biotic stress (weevil, virus), abiotic stress (drought, early frost, low temperature), and herbicide resistance as well as improved starch quality and fatty acid composition have been developed. _____________________________________________________________________________________________________________
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