Abstract
Woody plants have gotten a lot of attention as CO2 absorption sources and an alternative energy resource. Our goal is to develop new woody plant species with high growth performance and tolerance to environmental stresses by genetical modification. One of our aims is to improve functions of Eucalyptus root system, for example the acquisition of nutrition and tolerance to stresses. But one year or more is required for getting transgenic Eucalyptus and analysis of their function. Therefore we focused on the utilization of transformed hairy roots which can be generated in a relatively short term. In this study, we developed a hairy-root transformation system that made the function analysis possible in one to two months. With this system, we are now evaluating the effectiveness and impact of promoters and genes in Eucalyptus.
