Transgenic Approaches for Improved Forage and Bioenergy Crops
2009
Kim, K.H., Gyeongsang National University, Jinju, Republic of Korea | Alam, Iftekhar, Gyeongsang National University, Jinju, Republic of Korea | Sharmin, Shamima Akhtar, Gyeongsang National University, Jinju, Republic of Korea | Park, C.H., Gyeongsang National University, Jinju, Republic of Korea | Jeon, C.H., Gyeongsang National University, Jinju, Republic of Korea | Lee, H.J., Gyeongsang National University, Jinju, Republic of Korea | Kim, Y.G., Gyeongsang National University, Jinju, Republic of Korea | Lee, K.W., National Institute of Animal Science, RDA, Cheonan, Republic of Korea | Lee, S.H., National Institute of Animal Science, RDA, Cheonan, Republic of Korea | Kim, K.Y., National Institute of Animal Science, RDA, Cheonan, Republic of Korea | Kwak, S.S., Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea | Lee, B.H., Gyeongsang National University, Jinju, Republic of Korea
Grass species such as tall fescue, reed and miscanthus hold potential as forage and bioenergy feedstocks. Increased yield, improved quality and stress tolerance traits are major targets for the biotechnological improvement of forage and bioenergy crops. Efficient plant tissue culture systems for each crop plants have been established, and Agrobacterium-mediated transformation protocol was successfully developed. Transgenic plants overexpressing 2-Cys Prx, SOD and APX genes have shown enhanced tolerance to several abiotic stresses such as methyl viologen, hydrogen peroxide, salt, heat and heavy metals. In order to improve forage digestibility and bioethanol conversion efficiency of biomass, antisense- or RNAi knockdown transgenic plants with genes involved in lignin biosynthetic pathway are being developed. Our results suggest that transgenic technology for forage and bioenergy crops represent a unique opportunity for demonstrating the global benefits of biotechnology.
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