caa a22 4500 463160509 CHVBK 20180406164746.0 cr unu---uuuuu 170326e20071201xx s 000 0 eng 10.1007/s10535-007-0162-1 doi (NATIONALLICENCE)springer-10.1007/s10535-007-0162-1 Root morphology and cadmium uptake kinetics of the cadmium-sensitive rice mutant [Elektronische Daten] [J. He, C. Zhu, Y. Ren, D. Jiang, Z. Sun] To understand the physiological mechanism that confers Cd sensitivity, root morphology and Cd uptake kinetics of the Cd-sensitive mutant and wild type rice were investigated. The root length, root surface area, and root number of mutant rice decreased more significantly with increasing Cd concentration in growth media compared with the wild type rice. The uptake kinetics for 109Cd2+ in roots of both the mutant and wild type rice were characterized by a rapid linear phase during the first 6 h and a slower linear phase during the subsequent period. Concentration-dependent Cd2+ influx in both species could be characterized by the Michaelis-Menten equation, with similar apparent Km values for mutant and wild type rice (2.54 and 2.37 µM, respectively). However, the Vmax for Cd2+ influx in mutant root cells was nearly 2-fold higher than that for wild type rice, indicating that enhanced absorption into the root is one of the mechanisms involved in Cd sensitivity in mutant rice. Institute of Experimental Botany, ASCR, 2007 Oryza sativa nationallicence Cd-accumulation nationallicence Cd-translocation nationallicence Km : Michaelis constant nationallicence Vmax : maximum influx rate nationallicence He J. College of Life Science, Zhejiang University, 310058, Hangzhou, P.R. China aut Zhu C. College of Life Science, Zhejiang University, 310058, Hangzhou, P.R. China aut Ren Y. College of Life Science, South China Agriculture University, 510642, Guangzhou, P.R. China aut Jiang D. College of Life Science, South China Agriculture University, 510642, Guangzhou, P.R. China aut Sun Z. China National Rice Research Institute, 310006, Hangzhou, P.R. China aut Biologia Plantarum Springer Netherlands 51/4(2007-12-01), 791-794 0006-3134 51:4<791 2007 51 10535 https://doi.org/10.1007/s10535-007-0162-1 text/html Onlinezugriff via DOI 1 brief-communication jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10535-007-0162-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- He J. College of Life Science, Zhejiang University, 310058, Hangzhou, P.R. China aut NATIONALLICENCE 700 1- Zhu C. College of Life Science, Zhejiang University, 310058, Hangzhou, P.R. China aut NATIONALLICENCE 700 1- Ren Y. College of Life Science, South China Agriculture University, 510642, Guangzhou, P.R. China aut NATIONALLICENCE 700 1- Jiang D. College of Life Science, South China Agriculture University, 510642, Guangzhou, P.R. China aut NATIONALLICENCE 700 1- Sun Z. China National Rice Research Institute, 310006, Hangzhou, P.R. China aut NATIONALLICENCE 773 0- Biologia Plantarum Springer Netherlands 51/4(2007-12-01), 791-794 0006-3134 51:4<791 2007 51 10535 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer