|Budget Amount *help
¥22,750,000 (Direct Cost: ¥17,500,000、Indirect Cost: ¥5,250,000)
Fiscal Year 2018: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2017: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000)
Fiscal Year 2016: ¥7,540,000 (Direct Cost: ¥5,800,000、Indirect Cost: ¥1,740,000)
Fiscal Year 2015: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
|Outline of Final Research Achievements
Photosynthesis provides biochemical energy and sugar, which are converted from sorlar power and carbon dioxide, respectively. Nonetheless, some algal species have secondarily lost photosynthesis, resulting in heterotrophic species. I have used a heterotrophic diatom Nitzschia sp. as a model in order to elucidate evolution from a phototrophic species to a heterotrophic species. I have unveiled that the heterotrophic diatom still retains a non-photosynthetic plastid, the heterotrophic diatom has lost few plastidal metabolic pathways, and the heterotrophic diatom is capable of synthesizing various compounds such as amino acids and fatty acids in the plastid, even after loss of photosynthesis. These findings indicate that loss of photosynthesis does not always result in functional reduction of plastids.