Laboratory of Applied Plant Genomics

About our research

Purpose of our research

Higher plants harbor large genomes corresponding to several hundred million to several billion bps, which encode the genetic information. However, not all of the information in the genome is essential. To elucidate the important information in the genome, we collect and analyze a large quantity of genomic information from a variety of higher plants. Furthermore, we develop the methodologies for utilizing genomic information to plant breeding.

Characteristics of our research

We have been analyzing genomic information from over 25 plant species to identify useful genes and DNA markers. In addition, we have sequenced the genomes of crop plants, including tomato and strawberry. Based on these achievements, we are collaborating with domestic and foreign institutions and private companies to develop new breeding technologies.

Expected fields of application

By comparing genomic sequences both between and within species, genes characteristic for each plant species and variety can be identified. Then, by investigating the functions of characteristic genes, the basic knowledge essential for breeding new crops resistant to diseases and drought can be obtained. If such new breeding technologies, which fully utilize the genomic information, are developed, it may be possible to produce new cultivars with novel traits, and to shorten the breeding term, which is 10 or more years at present. Moreover, it may become possible to speculate on the process of plant evolution, and to elucidate the phylogenetic relationship between plants throughout the world.

Our research projects

1. Find genes in the genome.

We identify genes within the genome by comparing the DNA sequences with those of known genes and by predictions generated by high-spec computer systems.

2. Speculate on gene functions.

We speculate on the function of the proteins encoded by the genes in the genome using computer analyses. We also retrieve information on various genes reported worldwide and construct databases.

3. Discover genomic information useful for breeding.

To accelerate the process of plant breeding, obtaining information about the genes and DNA markers related to useful traits, such as fruit size and taste, is essential. However, such information, like pieces of treasure buried in the desert, is scattered throughout the genome in different ways depending on the species. We search for useful genes and DNA markers using hi-spec computers and cutting edge technology for genome analysis.

4. Develop new breeding technologies.

We develop new breeding technologies by finding a combination of candidate genes or DNA markers that is most effective for improving certain traits.

Publications