Abstract:
: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.
journal_name
FEBS Lettjournal_title
FEBS lettersauthors
Wipf D,Benjdia M,Tegeder M,Frommer WBdoi
10.1016/s0014-5793(02)03271-4keywords:
subject
Has Abstractpub_date
2002-09-25 00:00:00pages
119-24issue
1-3eissn
0014-5793issn
1873-3468pii
S0014579302032714journal_volume
528pub_type
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