Nagoya University Presentations
Dr. Hirofumi Yoshioka, Professor, Graduate School of Bioagricultural Science
This technology provides a novel promoter that is induced by pathogen infection. Gene transfer using the present promoter allows creation of transgenic plant wherein a desired gene is expressed specifically on the occasion of pathogen infection. Accordingly, by transferring any gene involved in protective response, pathogen-resistant plant can be created which evokes a prompt protective response to pathogen infection.
Dr. Teruyuki Niimi, Assistant Professor, Graduate School of Bioagricultural Science
The multicolored Asian ladybird beetle, Harmonia axyridis is a predator of numerous aphid species, and its use as a biological control agent has already been established. However, since adult beetles immediately tend to fly away from field crops, sustainable use in biological control has been restricted. To resolve this problem and make this biological control more efficient, a wingless, and therefore flightless, strain that is unable to disperse from crops was developed. Since this RNAi method depends not on genetic transformation, but on posttranscriptional regulation, this biological control agent would be easily accepted by the public from an environmental and safety point of view.
Dr. Yutaka Sato, Associate Professor, Graduate School of Bioagricultural Science
Development of Versatile and Eco-Friendly RNA Pesticide
RNA pesticide have various advantage over the conventional chemical pesticides. RNA pesticide is safe and less environmentally harmful because it is biomacromolecule. Since RNA pesticide works based on its nucleotide sequence complementarity, we can easily manipulate the range of the target pest by changing their nucleotide sequences. For example, we can design an RNA pesticide that targets specific species or broader families of pests. Our research group is focusing on the development of RNA-based pesticides and found that the technology works quite efficiently. We are looking for an industry partner to move this technology towards the application in crop protection from pest.
Dr. Kazuhiko Fukushima, Professor, Graduate School of Bioagricultural Science
Application of TOF-SIMS to Wood Chemistry
Time-of-flight secondary ion mass spectrometry (TOF-SIMS) is a surface sensitive technique that can directly detect molecular or fragment ions of interest to subsequently image the targeted ions on the sample surface without any pretreatment. We have developed the application of TOF-SIMS to wood chemistry including lignin and other wood-related compounds. Recent studies showed that TOF-SIMS is useful for lignin analysis by detecting the characteristic monomeric ions having a p-hydroxyphenyl, guaiacyl, syringyl ring. This technique enables us to obtain both chemical and morphological informations on the cell wall surface.