| Budget Amount *help |
¥23,790,000 (Direct Cost: ¥18,300,000、Indirect Cost: ¥5,490,000)
Fiscal Year 2019: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2018: ¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000)
Fiscal Year 2017: ¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000)
Fiscal Year 2016: ¥7,020,000 (Direct Cost: ¥5,400,000、Indirect Cost: ¥1,620,000)
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| Outline of Final Research Achievements |
For sustainable food and plant biomass production, it is necessary to develop plant cultivars tolerant to mineral nutrient deficiency in soil. Boron is an essential micronutrient for plants and this research aimed to identify genes to confer low-boron tolerance through reduction of boron requirement in plants. Arabidopsis thaliana mutants were characterized, which showed reduction in boron concentration in leaves but increase in leaf expansion. It was revealed that the responsible mutations were present in the genes required for synthesis of cell wall pectin, a boron binding site, and translation process. This research successfully identified the genetic resources to reduce boron requirement and proposed molecular mechanisms underlying low-boron tolerance in plants.
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