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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Ebine, Kazuo Uemura, Tomohiro Schulze-lefert, Paul Nakano, Akihiko Saito, Chieko Ueda, Takashi Kim, Hyeran |
| Description | Author Affiliation: Uemura T ( Department of Biological Sciences, Graduate School of Science, University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan. tuemura@biol.s.u-tokyo.ac.jp); |
| Abstract | In all eukaryotic cells, a membrane-trafficking system connects the post-Golgi organelles, such as the trans-Golgi network (TGN), endosomes, vacuoles, and the plasma membrane. This complex network plays critical roles in several higher-order functions in multicellular organisms. The TGN, one of the important organelles for protein transport in the post-Golgi network, functions as a sorting station, where cargo proteins are directed to the appropriate post-Golgi compartments. Unlike its roles in animal and yeast cells, the TGN has also been reported to function like early endosomal compartments in plant cells. However, the physiological roles of the TGN functions in plants are not understood. Here, we report a study of the SYP4 group (SYP41, SYP42, and SYP43), which represents the plant orthologs of the Tlg2/syntaxin16 Qa-SNARE (soluble N-ethylmaleimide sensitive factor attachment protein receptor) that localizes on the TGN in yeast and animal cells. The SYP4 group regulates the secretory and vacuolar transport pathways in the post-Golgi network and maintains the morphology of the Golgi apparatus and TGN. Consistent with a secretory role, SYP4 proteins are required for extracellular resistance responses to a fungal pathogen. We also reveal a plant cell-specific higher-order role of the SYP4 group in the protection of chloroplasts from salicylic acid-dependent biotic stress. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 5 |
| Volume Number | 109 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 2012-02-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Arabidopsis Metabolism Golgi Apparatus Plant Diseases SNARE Proteins Biological Transport Cell Compartmentation Research Support, Non-U.S. Gov't Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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