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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Zuther, E. Zilberstein, A. Huang, S. Sirikhachornkit, A. Jelenska, J. Eilenberg, H. Arnold, E. M. Su, X. Haselkorn, R. Podkowinski, J. Gornicki, P. |
| Description | Author Affiliation: Zuther E ( Department of Molecular Genetics and Cell Biology, University of Chicago, Chicago IL 60637, USA.); |
| Abstract | Cis-acting regulatory elements of the wheat acetyl-CoA carboxylase (ACC) gene family were identified by comparing the promoter activity of 5' end gene fragments fused to a reporter gene in two transient expression systems: wheat protoplasts and epidermal cells of mature embryos. Expression of the plastid and the cytosolic ACC genes is each driven by two nested promoters responsible for the synthesis of two transcript types. The internal promoter is located in an intron removed from transcripts originating at the first promoter. These complex promoters, which are different for the cytosolic and plastid ACC genes, control tissue-specific expression of the enzymatic activity supplying cytosolic, plastid, and mitochondrial pools of malonyl-CoA. The activity of one such complex promoter, driving expression of one of the cytosolic ACC genes, was studied throughout development of transgenic wheat plants carrying a full-length promoter-reporter gene fusion. High activity of the promoter was detected in the coleoptile, in the upper sheath section of the leaf, on the top surface of the ovary, in some sections of the main veins in the lemma and glume, and in abaxial epidermis hair cells of the lemma, glume, and rachis. The findings are consistent with the developmental and environmental requirements for very-long-chain fatty acids and flavonoids, whose synthesis begins with the ACC reaction in the cytosol of these specific cell types. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 5 |
| Volume Number | 101 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 2004-02-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Acetyl-CoA Carboxylase Genetics Gene Expression Regulation, Plant Promoter Regions, Genetic Triticum Cytosol Enzymology Glucuronidase Organ Specificity Plants, Genetically Modified Plastids RNA, Messenger Growth & Development Research Support, Non-U.S. Gov't Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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