Study on strategies of cluster root forming plants to cope poor nutrient conditions
| Project/Area Number |
17KK0156
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| Research Category |
Fund for the Promotion of Joint International Research (Fostering Joint International Research)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Plant nutrition/Soil science
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| Research Institution | Hiroshima University |
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Principal Investigator |
Wasaki Jun 広島大学, 統合生命科学研究科(生), 教授 (00374728)
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| Project Period (FY) |
2018 – 2022
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| Project Status |
Completed (Fiscal Year 2022)
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| Budget Amount *help |
¥14,560,000 (Direct Cost: ¥11,200,000、Indirect Cost: ¥3,360,000)
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| Keywords | 根圏 / 分泌 / クラスター根 / リン / 有機酸 / ホスファターゼ / ヤマモガシ科 / カヤツリグサ科 / 貧栄養土壌 |
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| Outline of Final Research Achievements |
Some specific plants in nutrient impoverished soils form unique root structures so-called cluster roots (CRs). This study aimed to investigate the low-P tolerance and impact on soil environments of CR-forming plant species grown in Australia and Japan. The ion profiles of matured leaves were different among locational profiles, whereas these were not influenced by seasonal and annual differences. CR-forming plants showed lower concentration in P, N, and K. Some species or families hyper-accumulated any specific elements, such as Al. Based on both of field studies and pot culture experiments, analyses on microbial community structure revealed that the Proteaceae species independent on mycorrhizal symbiosis. Genus Burkholderia was most predominant group in the rhizosphere soil of CRs of Proteaceae species.
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| Academic Significance and Societal Importance of the Research Achievements |
本研究課題では、クラスター状の根を形成して低リン耐性を示す植物の生態学的機能とこれに関わる生理機能に注目した。これらの植物のルーツとも言える西オーストラリアと日本在来種の比較解析を行うことで、貧栄養環境にこれらの種がどのように適応してきたかについて、根分泌物の影響がどの範囲に及ぶかなど、理解が深まった。得られた情報は今後の地球規模での課題である貧栄養環境における農業の推進にも重要な知的基盤を提供し、食糧の持続的生産などの持続可能な社会に貢献する。また、各分野での世界的権威である共同研究者に加え、若手を含むネットワークを構築できたことから、今後この分野の学術的展開をさらに進めることが期待される。
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Report
(6 results)
Research Products
(50 results)
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[Journal Article] 植物の低リン適応戦略2022
Author(s)
和崎 淳
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Journal Title
KAGAKU TO SEIBUTSU
Volume: 60
Issue: 8
Pages: 420-425
DOI
ISSN
0453-073X, 1883-6852
Year and Date
2022-08-01
Related Report
Peer Reviewed
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[Presentation] What is the actual merit of cluster root formation in phosphorus uptake from real soil?2019
Author(s)
Okamura, T., Sano, T., Furutani, H., Yamada, H., Tsubota, H., Lambers, H., Wasaki, J.
Organizer
Rhizosphere 5
Related Report
Int'l Joint Research
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[Presentation] Properties of mineral accumulation of solfatara plants in western Japan.2018
Author(s)
Wasaki, J., Yamamoto, A., Saito, T., Tsubota, H., Watanabe, T., Nakatsubo, T.
Organizer
10th International Symposium on ‘Plant-Soil Interactions at Low pH’
Related Report
Int'l Joint Research
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[Presentation] Characterization of LaMATE-PI1, a candidate of citrate transporter isolated from cluster roots of white lupin.2018
Author(s)
Furutani, H., Hanashiro, K., Fujii, Y., Maruyama, H., Sasaki, T., Wasaki, J.
Organizer
6th Symposium on Phosphorus in Soils and Plants
Related Report
Int'l Joint Research
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