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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Morita, Miyo Terao Kato, Takehide Nagafusa, Kiyoshi Saito, Chieko Ueda, Takashi Nakano, Akihiko Tasaka, Masao |
| Description | Country affiliation: Japan Author Affiliation: Morita MT ( Graduate School of Biological Sciences, Nara Institute of Science and Technology, Nara 630-0101, Japan.) |
| Abstract | The endodermal cells of the shoot are thought to be the gravity-sensing cells in Arabidopsis. The amyloplasts in the endodermis that sediment in the direction of gravity may act as statoliths. Endodermis-specific expression of SGR2 and ZIG using the SCR promoter could complement the abnormal shoot gravitropism of the sgr2 and zig mutants, respectively. The abnormalities in amyloplast sedimentation observed in both mutants recovered simultaneously. These results indicate that both genes in the endodermal cell layer are crucial for shoot gravitropism. ZIG encodes AtVTI11, which is a SNARE involved in vesicle transport to the vacuole. The fusion protein of SGR2 and green fluorescent protein localized to the vacuole and small organelles. These observations indicate that ZIG and SGR2 are involved in the formation and function of the vacuole, a notion supported by the results of subcellular analysis of the sgr2 and zig mutants with electron microscopy. These results strongly suggest that the vacuole participates in the early events of gravitropism and that SGR2 and ZIG functions are involved. |
| File Format | HTM / HTML |
| ISSN | 10404651 |
| e-ISSN | 1531298X |
| Journal | THE PLANT CELL ONLINE |
| Issue Number | 1 |
| Volume Number | 14 |
| Language | English |
| Publisher | American Society of Plant Biologists |
| Publisher Date | 2002-01-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Discipline Botany Arabidopsis Genetics Gravitropism Physiology Plant Shoots Vacuoles Cytology Arabidopsis Proteins Metabolism Cells, Cultured Gene Expression Regulation, Plant Genetic Complementation Test Green Fluorescent Proteins Luminescent Proteins Membrane Proteins Microscopy, Confocal Microscopy, Electron Plant Proteins Plastids Ultrastructure Qb-snare Proteins Recombinant Fusion Proteins Signal Transduction Research Support, Non-u.s. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cell Biology Plant Science |
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