Abstract
The world population is expected to increase up to nine billion by the year 2050. To secure foods for maintenance of such a large population, it is required to increase yield of crops and vegetables per cultivated acreage. However, it is hard to expand the lands suitable for plant raising on the earth. Instead, a number of closed-type plant factories have been constructed to provide steady production of vegetables. Particularly, controlling light intensity and wavelength can affect plant growth and yield. Therefore, we chose LED light to grow tomato plants because it is easy to change both light conditions by this light. When we grew tomato plants (cv. Reiyo) under the red LED light condition with two different light intensities (weak and strong), we could obtain bigger tomato fruits under the strong light condition than that under the weak light condition. Next, we conducted systems biology approach by integration of metabolite and transcript profiling of leaf and fruit samples harvested from the two light conditions. We applied next generation sequencing as well as microarray analysis for comprehensive transcript profiling. The up-to-date results will be presented.
