Korea University Industry and Academy Cooperation Foundation

Korea University Industry and Academy Corporation Foundation

Korea University Industry & Academy Cooporation Foundation

Man Sup Kwak

Jeong Sheop Shin

Jung Myung Bae

Seol Ah Noh

Sun-Hee Park

Kyung Hee Paek

Shin Woo Lee

Haeng Soon Lee

Disclosed herein are a sweetpotato expansin cDNA (IbExpansin), a plant transformation vector carrying the same, and a transgenic plant comprising the vector. The transgenic, prepared using the IbExpansin cDNA, outgrows the wild-type, thereby increasing in size and seed production up to three times. Thus, the gene is useful in the generation of highly productive transgenic plants for improvement in biomass and/or seed production.

Sweetpotato expansin cDNA and high-yield transgenic plants using the same

Disclosed herein are a novel sucrose-inducible promoter sequence and a 5' untranslated region which are derived from sweetpotato ADP-glucose pyrophosphorlyase gene (ibAGP1) (SEQ ID NO: 1). Also disclosed are expression vectors using the same sequences and a transgenic plant using the same vectors. The promoter and 5&#x2032; untranslated region according to the present invention can confer a high level of sucrose-inducible expression in plants, particularly in plant storage roots which contain sucrose in relatively large quantities to accumulate starch in large quantities in plants. Therefore the present invention may be useful for the generation of transgenic plants to produce useful proteins in large quantities in plant storage roots.

Sucrose-inducible promoter from sweetpotato

The present invention relates to a promoter directing high levels of expression of a gene in plant storage roots, derived from the sweet potato MADS-box gene, a vector directing high levels of expression of a gene in plant storage roots comprising the same and a transient assay method expressing a foreign gene transiently in plant storage roots using the same vector. The promoter according to the present invention can induce high levels of expression particularly in plant storage roots. Therefore the present invention is very useful for the development of transgenic plants to produce valuable materials in large quantities in plant storage roots.

Sweet potato MADS-box promoter directing high level expression in plant storage root

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Seoul, South Korea

Man Sup Kwak