Epigenetic regulation of root phenotypic plasticity contributing drought avoidance in rice
| Project/Area Number |
15H04435
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Science in genetics and breeding
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| Research Institution | Nagoya University |
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Principal Investigator |
Inukai Yoshiaki 名古屋大学, 農学国際教育協力研究センター, 准教授 (20377790)
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| Co-Investigator(Kenkyū-buntansha) |
兒島 孝明 名古屋大学, 生命農学研究科, 講師 (40509080)
高橋 実鈴 名古屋大学, 生命農学研究科, 特任助教 (20738091)
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| Co-Investigator(Renkei-kenkyūsha) |
KOJIMA Takashi 名古屋大学, 生命農学研究科, 講師 (40509080)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥17,030,000 (Direct Cost: ¥13,100,000、Indirect Cost: ¥3,930,000)
Fiscal Year 2017: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2016: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2015: ¥8,970,000 (Direct Cost: ¥6,900,000、Indirect Cost: ¥2,070,000)
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| Keywords | イネ / 根系形成 / 分子機構 / 根系形態 / ストレス応答 / 根系形成機構 / ヒストン修飾 / 遺伝子発現 / 突然変異 / 育種学 / 遺伝学 / 遺伝子 / ゲノム / ストレス / 植物遺伝育種学 / エピジェネティクス |
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| Outline of Final Research Achievements |
Development of lateral roots (LRs) is promoted when parental root elongation is suppressed. Promotion of LR growth compensates for parental root growth, which contributes to the maintenance of total root length. However, the developmental
processes underlying the compensatory growth of LRs are still unclear. In this study, we induced LR compensatory growth in rice by surgical excision of a parent root tip, and analyzed the morphological and anatomical changes in LRs. Our analysis revealed that the morphological and anatomical changes of LRs that are induced by the root-tip excision of the parent vary continuously, and are dependent on both the developmental stage of LR primordia at the site of root-cutting and the distance from the cut site. Then, by using this method, we also tried to understand the important genes that regulate LR development epigenetically through ChIP-Seq analysis with Histone H3K27me3 antibody.
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Report
(4 results)
Research Products
(16 results)
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[Presentation] Trial of rice breeding for drought avoidance using the vrs1 gene that promotes lateral root development2016
Author(s)
Hasegawa, T., Shibata, A., Takahashi-Nosaka, M., Nishiuchi, S., Samejima, H., Wainaina, C., Menge, D., Kikuta, M., Yamauchi, A., Makihara, D. and Inukai, Y.
Organizer
SATREPS International Symposium, "Tailor-made rice breeding and cultivation technology development for sub-Saharan Africa;Progress and future prospects of the SATREPS project in Kenya"
Place of Presentation
Nairobi, Kenya
Year and Date
2016-12-06
Related Report
Int'l Joint Research
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[Presentation] Developmental and functional responses of rice root system to soil water and nutrient conditions2015
Author(s)
Yoshiaki Inukai, Misuzu Takahashi-Nosaka, Cornelius M. Wainaina, Akihide Shibata, Nonawin B. Lucob, Hiroki Inahashi, Mana. Kano-Nakata, Emi Kameoka, Roel R. Suralta, Jonathan M. Niones, Thiem T. Tran, Stella O. Nketia, Israt J. Shelley, Yuka Kitomi, Satomi Ohashi, Shunsaku Nishiuchi, Hidemi Kitano and Akira Yamauchi
Organizer
9th Symposium for International Society of Root Research
Place of Presentation
Canberra, Australia
Year and Date
2015-10-06
Related Report
Int'l Joint Research / Invited
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