Mineral Nutrition Laboratory, United States Department of Agriculture, Agricultural Research Service, Beltsville, Maryland 20705.
Plant Physiol. 1970 Jun;45(6):787-90. doi: 10.1104/pp.45.6.787.
Measurements were made of net H(+) loss from low-salt barley roots accumulating salt. Comparison of rates of loss from roots in different concentrations of KCl showed that H(+) loss increased in the same way as the Mechanism II component of salt uptake. This H(+) loss appeared to be coupled to salt uptake and was not due to increased respiration or metabolic breakdown of sugars. In view of the large negative potential of the cells (-60 millivolts), it is suggested that the H(+) loss is due to an outward proton transport process.
测量了从积累盐分的低钠盐大麦根中净 H(+)损失。比较不同浓度 KCl 中根的损失速率表明，H(+)损失的增加方式与盐摄取的机制 II 组分相同。这种 H(+)损失似乎与盐摄取有关，而不是由于呼吸作用增加或糖的代谢分解。鉴于细胞的负电位很大（-60 毫伏），因此建议 H(+)损失是由于质子向外转运过程引起的。
