Intraspecific differentiation reinforced by flowering time differentiation as local adaptation caused by the genotype polymorphisms
| Project/Area Number |
16H04831
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Biodiversity/Systematics
|
|---|
| Research Institution | Kyoto University |
|---|
Principal Investigator |
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
川口 正代司 基礎生物学研究所, 共生システム研究部門, 教授 (30260508)
|
|---|
| Research Collaborator |
WAKABAYASHI tomomi
HAN Chingxiang
|
|---|
| Project Period (FY) |
2016-04-01 – 2019-03-31
|
| Project Status |
Completed (Fiscal Year 2018)
|
| Budget Amount *help |
¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000)
Fiscal Year 2018: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2017: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2016: ¥7,540,000 (Direct Cost: ¥5,800,000、Indirect Cost: ¥1,740,000)
|
|---|
| Keywords | 開花 / 繁殖成長 / 栄養成長 / 生殖前隔離 / 生育環境 / ミヤコグサ / ハマダイコン / 環境相互作用 / 生殖隔離 / ゲノムワイド関連解析 / 植物 / 進化 / 適応 / 開花関連遺伝子 / 春化処理 / 種内分化 / 日長 / 春化 |
|---|
| Outline of Final Research Achievements |
Flowering time differentiation within a plant species can cause pre-zygotic isolation and sculpture the intraspecific differentiation. In this financial year 2018, we cultivated 132 wild lines of Lotus japonicas (Fabaceae) in Okinawa and conducted Genome Wide Association Analysis (GWAS) and identified plural candidate genes as "outlier loci" that would associated with determining early or late flowering determination. In addition, we also investigated local differentiation of vernalization system using wild radish (Raphanus sativus: Brassicaceae). qRT-PCR revealed that floral initiation in the northern lineage was primarily controlled by FLC-A, while COL5-A initiated flowering in the southern accessions despite the presence of high FLC-A transcript levels.
|
| Academic Significance and Societal Importance of the Research Achievements |
日本列島は北海道から沖縄まで、南北方向に長い島国です。北海道は亜寒帯、沖縄は亜熱帯の気候です。そのために、広い範囲に分布する植物は、地域の環境に適応して花を咲かせる時期を決めています。この研究では、ミヤコグサという植物が日長などを感じる様々な遺伝子の相互作用で、ハマダイコンという植物では冬の寒さを一定期間にわたって経験するか（春化）ということに関わる２つの遺伝子の相互作用で適応していることがわかりました。このように、１種の植物のなかでも、日本列島の地域ごとに適切な時期に開花を迎えるためのしくみがわかってきました。このような仕組みは、農作物の収量を最大にしたり、野生植物の保護に役立つものです。
|
Report
(4 results)
Research Products
(22 results)
-
-
-
-
-
[Journal Article] Exploring genetic diversity and signatures of horizontal gene transfer in nodule bacteria associated with Lotus japonicus in natural environments2019
Author(s)
Bamba, M., Aoki, S., Kajita, T., Setoguchi H., Watano, Y., Sato, S., and Tsuchimatsu, T.
-
Journal Title
Molecular Plant-Microbe Interactions
Volume: 印刷中
Issue: 9
Pages: 1110-1120
DOI
Related Report
Peer Reviewed / Open Access
-
-
-
[Journal Article] Genetic diversity of Saxifraga acerifolia and S. fortune based on nuclear and chloroplast microsatellite markers2018
Author(s)
Magota, K., Sakaguchi, S., Akai, K., Isagi, Y., Setoguchi, H.
-
Journal Title
Bulletin of the National Science Museum of Nature and Science, Series B.
Volume: 44
Pages: 85-96
Related Report
Peer Reviewed / Open Access
-
-
-
-
-
-
-
-
-
-
-
-
-
-
