Expression of ZmLEC1 and ZmWRI1 increases seed oil production in maize
| Autor: | Jerry Ranch, Douglas Nubel, Mitchell C. Tarczynski, Kimberly Glassman, Changjiang Li, Bo Shen, Peizhong Zheng, William B. Allen |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Physiology
Molecular Sequence Data Biochemical Processes and Macromolecular Structures Plant Science Genetically modified crops Zea mays Genetics Plant Oils Poaceae Downstream (petroleum industry) Glucuronidase Plant Proteins biology business.industry Crop yield food and beverages Starch biology.organism_classification Plants Genetically Modified Enzyme Activation Vegetable oil Agronomy Germination Seedling Biodiesel production Seeds business |
| Zdroj: | Plant physiology. 153(3) |
| ISSN: | 1532-2548 |
| Popis: | Increasing seed oil production is a major goal for global agriculture to meet the strong demand for oil consumption by humans and for biodiesel production. Previous studies to increase oil synthesis in plants have focused mainly on manipulation of oil pathway genes. As an alternative to single-enzyme approaches, transcription factors provide an attractive solution for altering complex traits, with the caveat that transcription factors may face the challenge of undesirable pleiotropic effects. Here, we report that overexpression of maize (Zea mays) LEAFY COTYLEDON1 (ZmLEC1) increases seed oil by as much as 48% but reduces seed germination and leaf growth in maize. To uncouple oil increase from the undesirable agronomic traits, we identified a LEC1 downstream transcription factor, maize WRINKLED1 (ZmWRI1). Overexpression of ZmWRI1 results in an oil increase similar to overexpression of ZmLEC1 without affecting germination, seedling growth, or grain yield. These results emphasize the importance of field testing for developing a commercial high-oil product and highlight ZmWRI1 as a promising target for increasing oil production in crops. |
| Databáze: | OpenAIRE |
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