2007 Fiscal Year Final Research Report Summary
Study of the flowering regulatory mechanisms by the TEL1/FT gene family.
| Project/Area Number |
17370085
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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 |
Developmental biology
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| Research Institution | Research Institute for Biological Sciences, Okayama |
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Principal Investigator |
GOTO Koji Research Institute for Biological Sciences, Okayama, Senior Researcher (00251489)
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| Project Period (FY) |
2005 – 2008
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| Keywords | Plant / Molecular genetics / Development / Flowering / Cell-cell interactions / Cell to cell movement / Florigen / diurnal rhythms |
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| Research Abstract |
Arabidopsis TERMINAL FLOWER 1 (TFL1) is required for the establishment and maintenance of the inflorescence meristem (IM). Although TFL1 function is required in the entire shoot apical meristem (SAM), TFL1 is expressed only in the central region of the SAM. Here, we show that TFL1 protein moves from the inner region to outer layers of the SAM in accordance with the vegetative-toreproductive phase transition that is the molecular basis of the non-cellautonomous function of TFL1. This protein trafficking also occurs from the outer to inner layers of the inflorescence meristem (IM), but TFL1 protein trafficking was not observed in other tissues, such as the flower stalk, mature floral organs, or leaves. We found that TFL1 protein is required in the entire SAM by using an immobilized TFL1 protein, showing that TFL1 is responsible for cell-to-cell communication during IM development. Molecular dissection of TFL1 protein revealed that a 21 amino acid region encoded by exon 2 is essential and sufficient for TFL1 protein trafficking. Finally, we found that a paralog of TFL1, FLOWERING LOCUS T (FT), that is a floral pathway integrator involved in leaf to SAM systemic flowering signal transduction, also moves cell to cell in the SAM.
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Research Products
(47 results)
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[Journal Article] Epigenetic maintenance of the vernalized state in Arabidopsis thaliana requires LIKE HETEROCHROMATIN PROTEIN 12006
Author(s)
Sung, S., He, Y., Eshoo, T.W., Tamada, Y., Johnson, L., Nakahigashi, K., Goto, K., Jacobsen, S.E., Amasino, R.M
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Journal Title
Nature Genetics 38
Pages: 706-710
Description
「研究成果報告書概要(和文)」より
Peer Reviewed
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[Journal Article] FD, a bZIP protein mediating signals from the floral pathway integrator FT at the shoot apex2005
Author(s)
Abe, M., Kobayashi, Y., Yamamoto, S., Daimon, Y., Yamaguchi, A., Ikeda, Y., Ichinoki, H., Notaguchi, M., Goto, K., Araki, T
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Journal Title
Science 309
Pages: 1052-1056
Description
「研究成果報告書概要(和文)」より
Peer Reviewed
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