| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2016: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Outline of Final Research Achievements |
The symbiosis of nitrogen-fixing bacteria with plants is a widespread and important phenomenon in ecosystems. The genes for this symbiosis have ever been found with genetic analysis. It has been thought that the symbiotic genes passed though different evolutionary pathways from the other housekeeping genes and have characteristic features in the molecular evolution. We searched for these genes using the analysis of microbial comparative genomics and revealed that several symbiotic genes might have originated from the gene duplication of the housekeeping genes in bacteria. We also found that new evolutionary phenomena such as parallel evolution of symbiosis function, convergent evolution of gene order, and gene conversion in several symbiotic genes.
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