Adaptation of Plasma Membrane H+-ATPase of Rice Roots to Low pH
Rice plants prefer ammonium nutrition to nitrate in paddy soils. Since the mechanism responsible for the strong acidification of rhizosphere of rice roots following ammonium uptake is not clear, we investigated the adaptation of the plasma membrane H+ -ATPase, by examining its activity in rice roots under ammonium versus nitrate nutrition conditions, as well as different pH treatments. In vitro H+ -ATPase activity was significantly higher in rice roots grown at pH 3. 0 than at pH 6.0, irrespective of the nitrogen source supplied. This increase in activity was resulted from the enhanced H+ -ATPase protein concentration at the plasma membrane and the up-regulation of mRNA expression.
Yiyong Zhu Tingjun Di Xi Chen Feng Yan Sven Schubert Guohua Xu Qirong Shen
College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, Ch Institute of Crop Science & Plant Breeding, Justus Iiebig University, Ludwigstrasse 23, Giessen 3539 Institute of Plant Nutrition, Justus Liebig University, Heinrich-Buff-Ring 26-32, Giessen 35392, Ger
国际会议
The 7th International Symposium on Plant-Soil Interactions at Low pH(第七届低pH条件下植物-土壤交互作用国际研讨会)
广州
英文
124-125
2009-05-17（万方平台首次上网日期，不代表论文的发表时间）