Identification of sugar signals controlling the nitrate uptake by rice roots using a noninvasive technique.

China-UK HUST-RRes Genetic Engineering and Genomics Joint Laboratory, The Genetic Engineering International Cooperation Base of Ministry of Science and Technology, The Key Laboratory of Molecular Biophysics of Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology (HUST), Luoyu Road 1037, Wuhan 430074, China. Fax: 00 86-27-87 79 22 72. E-mail: hegy@hust.edu.cn