| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2016: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Outline of Final Research Achievements |
We evaluated the effects of exposing the root zones of maize and monstera plants to red or blue light-emitting diodes (LEDs) by comparing the growth of roots and shoots after low or high intensity treatments (50 or 100 μmol/m2/s, respectively). Maize plants that exposed to red LEDs showed significantly more growth, as did monstera plants at the higher light intensity. The water potential in the roots decreased significantly after treatment, with a greater effect occurring using the red LEDs, while the levels of glucose and of potassium ions increased following treatment compared to controls. The increased root growth in maize plants and in monstera plants given high intensity red light was associated with an increased distance from the root tip to mature cells and an increase in the lengths of the mature cells. These results indicate that exposing the root zone to light by red LEDs accelerated the growth of roots and shoots of plants.
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