| Autor: |
Wipf, Daniel, Benjdia, Mariam, Tegeder, Mechthild, Frommer, Wolf B. |
| Předmět: |
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| Zdroj: |
FEBS Letters; Sep2002, Vol. 528 Issue 1-3, p119, 6p |
| Abstrakt: |
Besides a role in phosphate supply, ectomycorrhizas play a crucial role in nitrogen nutrition of plants. The ectomycorrhizal association between Hebeloma cylindrosporum and Pinus pinaster serves as a model system accessible to molecular manipulation. Hebeloma mycelium is able to take up and use amino acids as the sole nitrogen source. Suppression cloning allowed identification of a Hebeloma transporter (HcGAP1) mediating histidine uptake. HcGAP1 mediates secondary active uptake of a wide spectrum of different amino acids. The secondary active transport mechanism together with the expression in hyphae, but not in mycorrhizas, indicate a role in uptake of organic nitrogen from the soil. [Copyright &y& Elsevier] |
| Databáze: |
Complementary Index |
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