2013 Fiscal Year Final Research Report
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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| 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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Research Products
(17 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)
Tabuchi H., Zhang Y., Hattori S., Omae M., Shimizu-Sato S., Oikawa T., Qian Q., Nishimura M., Kitano H., Xie H., Fang X., Yoshida H., Kyozuka J., Chen F. and Sato Y
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Journal Title
Plant Cell
Volume: 23(9)
Pages: 3276-3287
DOI
Peer Reviewed
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[Presentation] Transgene containment using rice cleistogamous mutation2013
Author(s)
Ohmori S., Tabuchi H., Yatou O., Hayashi T., Yamaguchi T., Koike S., Kuroki M., Shimizu H., Ikegaya T. and Yoshida H
Organizer
MARCO-FFTC Joint International Workshop 2013 Benefits and Risks of Genetically Modified Food Crops in Asia
Place of Presentation
Tsukuba
Year and Date
20131009-1010
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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
Year and Date
20120925-0927
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