Sugar transporters involved in flowering and grain development of rice
スポンサーリンク
概要
- 論文の詳細を見る
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.
- 日本応用糖質科学会の論文
- 2003-07-14
著者
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Yamaguchi Junji
Bioscience Center Nagoya Univ.
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Yamaguchi Junji
Division of Biological Sciences,Graduate School of Science,Hokkaido University
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Yamaguchi Junji
Bioscience Center And Graduate School Of Bioagricultural Scineces Nagoya University
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Yamaguchi Junji
Research Institute For Biochemical Regulation School Of Agricultural Sciences Nagoya University
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Yamaguchi Junji
Division Of Biological Sciences Graduate School Of Science Hokkaido University
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Takeda Takumi
Wood Research Institute Kyoto University
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Takeda Taito
Nagoya University Bioscience Center
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Takeda T
Dep. Of Advanced Bioscience Fac. Of Agriculture Kinki Univ.
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Ngampanya Budsaraporn
Division Of Biological Sciences Graduate School Of Science Hokkaido University
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Narangajavana Jarunya
Department Of Biotechnology Faculty Of Science Mahidol University
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Ikeda Akira
Division Of Biological Sciences Graduate School Of Science Hokkaido University
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