The characteristics of tonoplast adenosinetriphosphatase ( ATPase) and inorganic pyrophosphatase ( PPase) in the chlorenchyma and the water storage parenchyma ( WSP) of crassulacean acid metabolism ( CAM) plant Ananas comosus ( pineapple) leaves were investigated. 研究了景天酸代谢(CAM)植物菠萝叶片绿色组织与贮水组织液泡膜ATPase和焦磷酸酶(PPase)特性。