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Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Science / Faculty of Science >
Peer-reviewed Journal Articles, etc >
Sugar transporters involved in flowering and grain development of rice
| Title: | Sugar transporters involved in flowering and grain development of rice |
| Authors: | Ngampanya, Budsaraporn Browse this author | | Takeda, Taito Browse this author | | Naragajavana, Jarunya Browse this author | | Ikeda, Akira Browse this author | | Yamaguchi, Junji Browse this author →KAKEN DB |
| Keywords: | cereal | | endosperm | | rice | | sucrose | | sugar transporter |
| Issue Date: | 2003 |
| Journal Title: | Journal of Applied Glycoscience |
| Volume: | 50 |
| Issue: | 2 |
| Start Page: | 237 |
| End Page: | 240 |
| Abstract: | Sucrose and hexoses derived from sucrose breakdown are importance for early grain development in cereals. These assimilates were used to promote division and elongation, differentiation of the cells and deposition in storage organs. OsMST5 (Oryza sativa monosaccharide transporter 5), OsSUT1 (Oryza sativa sucrose transporter 1) and OsSUT2 (Oryza saliva sucrose transporter 2) have been cloned from rice. All mRNAs of these functional sugar transporters were detected during flowering and grain filling stage. The OsMST5 and OsSUT2 mRNAs were exclusively detectable before the pollinating stage by Northern analysis and the Os- SUT2 mRNA was localized in archespores and pollen mother cells by in situ mRNA detection, indicating that these gene products are involved in import of sucrose to promote pollen development at the early stage. Moreover, the OsSUT1 whiclh is known to be phloem companion cell-specific expression in source organs, was also expressed in the sink organs as well as modified aleurone cells of the developing endosperm. These results indicate that the OsSUT1 plays a role in re-uptake of sucrose from endosperm cavity to accumulate starch in grain filling stage. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/43927 |
| Appears in Collections: | 理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 山口 淳二
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