Transgenic Nicotiana tabacum plants expressing a fungal copper transporter gene show enhanced acquisition of copper
| Autor: | Susan Eapen, Premsagar Korripally, Ramachandran Vancheeswaran, Sudhir Singh |
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| Rok vydání: | 2011 |
| Předmět: |
Chlorophyll
Cations Divalent Transgene Nicotiana tabacum Genes Fungal Population chemistry.chemical_element Plant Science Genetically modified crops Biology Neurospora crassa Soil Transformation Genetic Hydroponics Gene Expression Regulation Plant Tobacco Botany Transgenes Cloning Molecular education education.field_of_study fungi Membrane Transport Proteins food and beverages General Medicine Plants Genetically Modified biology.organism_classification Copper Transformation (genetics) chemistry Lipid Peroxidation Agronomy and Crop Science |
| Zdroj: | Plant Cell Reports. 30:1929-1938 |
| ISSN: | 1432-203X 0721-7714 |
| Popis: | The diets of two-thirds of the world's population are deficient in one or more essential elements and one of the approaches to enhance the levels of mineral elements in food crops is by developing plants with ability to accumulate them in edible parts. Besides conventional methods, transgenic technology can be used for enhancing metal acquisition in plants. Copper is an essential element, which is often deficient in human diet. With the objective of developing plants with improved copper acquisition, a high-affinity copper transporter gene (tcu-1) was cloned from fungus Neurospora crassa and introduced into a model plant (Nicotiana tabacum). Integration of the transgene was confirmed by Southern blot hybridization. Transgenic tobacco plants (T(0) and T(1)) expressing tcu-1, when grown in hydroponic medium spiked with different concentrations of copper, showed higher acquisition of copper (up to 3.1 times) compared with control plants. Transgenic plants grown in soil spiked with copper could also take up more copper compared with wild-type plants. Supplementation of other divalent cations such as Cd(2+) and Zn(2+) did not alter uptake of Cu by transgenic plants. The present study has shown that expression of a heterologous copper transporter in tobacco could enhance acquisition of copper. |
| Databáze: | OpenAIRE |
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