花生幼苗下胚轴细胞表面存在氧化NADH与还原Fe(CN)_6~(3-)的氧化还原系统(redox system),它的活性随反应介质pH的上升而增加,氧是该系统的天然电子受体,受DCCD抑制。在NADH与Fe(CN)_6~(3-)被氧化与还原的同时,组织的H~+分泌明显受到促进,并随反应介质pH上升而增加。质膜H~+—A T Pase专一抑制剂Na_3VO_4(0.1mmol/L)对组织H~+分泌抑制绝对量基本上不受介质 The surface of hypocotyls of peanut seedlings has the redox system of oxidized NADH and reduced Fe (CN) 6 ~ (3-). Its activity increases with the pH of the reaction medium. Oxygen is the natural electron Receptor, inhibited by DCCD. While NADH and Fe (CN) 6 ~ (3-) were oxidized and reduced, H ~ + secretion of tissues was obviously promoted and increased with the increase of pH of reaction medium. Plasma membrane H ~ + -A T Pase specific inhibitor Na_3VO_4 (0.1mmol / L) on the absolute amount of inhibition of H ~ secretion is basically not the medium