Investigation on the origin and evolution of the multicellular body plan in plants by focusing on genomes and mutant analyses in Chara braunii (Charophyceae, Streptophyta)
| Project/Area Number |
18K06382
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 45030:Biodiversity and systematics-related
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| Research Institution | Kobe University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
加藤 将 新潟大学, 人文社会科学系, 特任准教授 (30624738)
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| Project Period (FY) |
2018-04-01 – 2021-03-31
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| Project Status |
Completed (Fiscal Year 2020)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Keywords | 進化 / 比較ゲノム / シャジクモ藻類 / ストレプト植物 / 多細胞体制 |
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| Outline of Final Research Achievements |
In this study, we examined two strains of Chara braunii, representing two ecotypes. We tried to obtain mutants by treating vegetative cells and oospores with ethylmethanesulfonate (EMS). A mutant with a phenotype of interest is obtained by screening thalli under a specific condition. We also obtained a mutant from long-term cultured material. We compared their phenotypic characteristics with wild type strains, and moved forward with mating experiments and genome analyses using mutant and wild type strains. In order to establish a gene introduction and stable expression system in Chara, moreover, we explored the developmental processes of thalli reproduced from stem cells of vegetative organs in detail, and tried to introduce the exogenous gene into Chara cells.
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| Academic Significance and Societal Importance of the Research Achievements |
陸上植物とシャジクモ藻類の多細胞体制の発生システムにどのような違いがあるのかを特定し、植物多細胞体制の進化過程を解明するためには、単なるゲノム配列比較では不十分であり、シャジクモ等の多細胞体制を持つシャジクモ藻類において遺伝子機能解析を行うことが必要不可欠である。本研究で得られたシャジクモにおける変異体の遺伝学的解析、遺伝子導入に関する知見は、シャジクモでこれまで困難であった遺伝子機能解析を実現するための糸口となると期待される。
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Report
(4 results)
Research Products
(26 results)
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[Journal Article] New distributional records, taxonomy, morphology, and genetic variations of the endangered brackish-water species Lamprothamnium succinctum (Charales, Charophyceae) in Japan2021
Author(s)
Kato, S., Tanaka, J., Tanaka, N., Yokoyama, J., Ito, Y., Fujiwara, Y., Higa, A., Kobayashi, S., Watanabe, M. M. and Sakayama, H.
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Journal Title
Journal of Asia-Pacific Biodiversity
Volume: 14
Issue: 1
Pages: 15-22
DOI
Related Report
Peer Reviewed / Open Access
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[Journal Article] The Chara Genome: Secondary Complexity and Implications for Plant Terrestrialization2018
Author(s)
Nishiyama, T., Sakayama, H., de Vries, J., Buschmann, H., Saint-Marcoux, D., et al. (他55名)
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Journal Title
Cell
Volume: 174
Issue: 2
Pages: 448-464
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Transcription factor DUO1 generated by neo-functionalization is associated with evolution of sperm differentiation in plants2018
Author(s)
Higo, A., Kawashima, T., Borg, M., Zhao, M., Lopez-Vidriero, I., Sakayama, H., et al. (他18名)
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Journal Title
Nature Communications
Volume: 9
Issue: 1
Pages: 5283-5283
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Presentation] Progress in Streptophyte Algae Genomics and Genetics2019
Author(s)
Nishiyama, T., Kamada, H., Kasahara, M., Sakayama, H., Tsuchikane, Y. and Sekimoto, H.
Organizer
Plant and Animal Genome XXVII Conference
Related Report
Int'l Joint Research / Invited
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