Characterization of a general amino acid permease from Hebeloma cylindrosporum

被引：52

作者：

Wipf, D ^{[1
]}

Benjdia, M ^{[1
]}

Tegeder, M ^{[1
]}

Frommer, WB ^{[1
]}

机构：

[1] ZMBP, Plant Physiol, D-72076 Tubingen, Germany

来源：

FEBS LETTERS | 2002年 / 528卷 / 1-3期

关键词：

amino acid transport; aspartate uptake; Hebeloma cylindrosporum;

D O I：

10.1016/S0014-5793(02)03271-4

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Besides a role in phosphate supply, ectomycorrhizas play a crucial role in nitrogen nutrition of plants. The ectomycorrhizal association between Hebelonta cylindrosporuni 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 Hebelonia 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. (C) 2002 Federation of European Biochemical Societies. Published by Elsevier Science B.V. All rights reserved.

引用

页码：119 / 124

页数：6

共 32 条

[1] AMINO-ACIDS AS NITROGEN-SOURCES FOR ECTOMYCORRHIZAL FUNGI - UTILIZATION OF INDIVIDUAL AMINO-ACIDS [J].