Approach to adaptive and phylogenetic evolution of Aucuba from genome information
Project/Area Number |
15K07181
|
Research Category |
Grant-in-Aid for Scientific Research (C)
|
Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Biodiversity/Systematics
|
Research Institution | The University of Tokyo |
Principal Investigator |
TOMA Tetsuo 東京大学, 大学院理学系研究科(理学部), 助教 (10376527)
|
Project Period (FY) |
2015-04-01 – 2018-03-31
|
Project Status |
Completed (Fiscal Year 2017)
|
Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2015: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
|
Keywords | アオキ属 / 系統分類 / 進化 / 日華植物区系 / 核DNA / 倍数化 |
Outline of Final Research Achievements |
In order to revise the infrageneric classification of Aucuba and to elucidate its phylogenetic and adaptive evolution, phylogenetic analyses of chloroplast and nuclear DNAs were conducted based on samples that taxonomically and geographically covered the genus. The phylogenetic relationship suggested that the new subgenus should be recognized. In addition, A. japonica is monophyletic in the phylogenetic trees of most chloroplast regions and nuclear ribosomal ITS region but polyphyletic in the phylogenetic trees of chloroplast rbcL, and nuclear encoded gapC and rpb2 genes. It is suggested that the allotetraploid linage might be originated via a past crossing with continental species and subsequent gene flow was occurred with the autotetraploid linage in Japan. Moreover, the former lineage shared the identical sequence of rbcL with a continental species, so we continue to examine its evolutional factors, cf. selection of rbcL gene, by a comparison of complete chloroplast DNA sequences.
|
Report
(4 results)
Research Products
(2 results)