Studies on the genetic mechanism regulating flower opening in rice
| Project/Area Number |
23580012
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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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| Research Field |
Breeding science
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| Research Institution | National Agriculture and Food Research Organization |
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Principal Investigator |
YOSHIDA Hitoshi 独立行政法人農業・食品産業技術総合研究機構, 作物研究所稲研究領域, 主任研究員 (30355565)
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| Co-Investigator(Kenkyū-buntansha) |
OHMORI Shinnosuke 独立行政法人農業食品産業技術総合研究機構, 中央農業総合研究センター・作物開発研究領域, 研究員 (50391438)
YATOU Osamu 独立行政法人農業食品産業技術総合研究機構, 中央農業総合研究センター・作物開 発研究領域, 研究領域長 (50355575)
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2011: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Keywords | 閉花受粉性 / イネ / 開花 / 花器官 / 鱗被 / 変異体 / 内穎 / 外穎 |
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| Research Abstract |
Flower opening of rice is achieved by a series of well-organized events, that is, unlocking of lemma and palea, swelling of lodicule, elongation of stamen filaments, anther dehiscence and stigma opening. In this study, we analyzed genetic mechanism that regulates the flower opening of rice using cleistogamous mutants.
From EMS-mutagenized populations, we identified 8 cleistogamous mutants. One of these mutants was a novel allele of the SPW1 gene that specifies lodicule identity. Another mutation, H193mt, is not related to lodicule development, and the causal gene was mapped to a 250kb region on chromosome 1. We also revealed that short-grain mutants with extremely round-shaped grains and small lodicules were cleistogamous. Furthermore, we identified MADS32 as a novel gene involved in development of flower-opening machinery of rice.
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Report
(4 results)
Research Products
(32 results)
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[Journal Article] LAX PANICLE2 of rice encodes a novel nuclear protein and regulates the formation of axillary meristems2011
Author(s)
Hiroaki Tabuchi, Yu Zhang, Susumu Hattori, Minami Omae, Sae Shimizu-Sato, Tetsuo Oikawa, Qian Qian, Minoru Nishimura, Hidemi Kitano, He Xie, Xiaohua Fang, Hitoshi Yoshida, Junko Kyozuka, Fan Chen, and Yutaka Sato
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Journal Title
Plant Cell
Volume: 23
Issue: 9
Pages: 3276-3287
DOI
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Peer Reviewed
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[Presentation] Characterization of two novel rice cleistogamous mutants2012
Author(s)
Ohmori S., Kuroki M., Koike S., Hayashi T., Yamaguchi T., Yatou O. and Yoshida H
Organizer
The Monsoon Asia Agro-Environmental Research Consortium Symposium 2012 Workshop 2: Biosafety and issues facing the development of Genetically Modified Crops in Monsoon Asia : Current status and Future aspects
Place of Presentation
Tsukuba
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[Presentation] 東北・関東・東海・北陸の各地で栽培したspw1-cls変異を持つ閉花受粉性イネ系統の開花率2012
Author(s)
大森伸之介,佐藤弘一,岡本和之,山崎周一郎,高橋利和,望月篤,野村研,上野直也,細井淳,新井利直,鈴木亨,佐藤秀人,加藤満,水上優子,山川智大,松井崇晃,蛯谷武志,小林大樹,田野井真,矢頭治,吉田均
Organizer
日本作物学会 2012.9.10-11
Place of Presentation
仙台市
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