کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4501956 | 1320517 | 2011 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Involvement of Plasma Membrane H+-ATPase in Adaption of Rice to Ammonium Nutrient Involvement of Plasma Membrane H+-ATPase in Adaption of Rice to Ammonium Nutrient](/preview/png/4501956.png)
The preference of paddy rice for NH4+ rather than NO3− is associated with its tolerance to low pH since a rhizosphere acidification occurs during NH4+ absorption. However, the adaptation of rice root to low pH has not been fully elucidated. The plasma membrane H+-ATPase is a universal electronic H+ pump, which uses ATP as energy source to pump H+ across the plasma membranes into the apoplast. The key function of this enzyme is to keep pH homeostasis of plant cells and generate a H+ electrochemical gradient, thereby providing the driving force for the active influx and efflux of ions and metabolites across the plasma membrane. This study investigated the acclimation of plasma membrane H+-ATPase of rice root to low pH. This mechanism might be partly responsible for the preference of rice plants to NH4+ nutrition.
Journal: Rice Science - Volume 18, Issue 4, December 2011, Pages 335-342