Isolation of Superoxide Dismutase cDNAS from an Weedy Rice Variety and Transformation of a Cultivated Rice Variety

Autor: Sang-Gyu Park, Byung Keuk Kim, Seung-In Lee, Hak Soo Suh, Youl-Lae Jo, Suk-Chul Suh
Rok vydání: 2002
Předmět:
Zdroj: Korea Journal of Environmental Agriculture. 21:156-161
ISSN: 1225-3537
DOI: 10.5338/kjea.2002.21.2.156
Popis: Two different cDNA clones for superoxide dismutase (SOD) were isolated from an weedy rice variety (Oryza sativa, cv. Bhutan14Ad) and were introduced into a cultivated rice variety (Oryza sativa, cv. Nakdong) in order to develop the environmental stress-resistant rice plants. Sequence analysis of the cloned cDNAS indicated that the deduced amino acid sequence of SOD-A is 88.4% identical to that of SOD-B. Furthermore, the nucleotide sequence of SOD-A is 99.3% identical to that of a Cu/Zn SOD gene of Oryza sativa (GenBank accession No. L36320). The nueleotide sequence of SOD-B was identical to that of the previously published SOD gene (Accession No. D01000). A cultivated rice variety, Nakdong-byeo, was transformed with chimeric SOD genes containing a actin promoter of rice and pin2 terminator using a particle bombardment technique. Transformed calli were selected on an selection medium containing phosphinothricin (PPT). Transgenic rice plants were regenerated from the PPT-resistant calli. PCR analysis with genomic DNAs from transgenic plants revealed that transgenes are introduced into rice genome.
Databáze: OpenAIRE