In vivo and in vitro effects of cadmium on H+ ATPase activity of plasma membrane vesicles from oat (Avena sativa L.) roots |
| |
Authors: | Astolfi Stefania Zuchi Sabrina Chiani Alessio Passera Calvino |
| |
Institution: | Dipartimento di Agrobiologia e Agrochimica, Università degli Studi della Tuscia, via S. C. de Lellis, 01100 Viterbo, Italy. sastolfi@unitus.it |
| |
Abstract: | The effect of an in vivo and in vitro treatment with cadmium on transport activities of root plasma membrane enriched vesicles was studied in oat (Avena sativa L. cv. Argentina) plants. Addition of 100 mumol/L CdSO4 to nutrient solution decreases both proton transport activity and ATPase activity to the same level. In vitro experiments show that cadmium seems to have a differential inhibiting effect on proton transport activity and ATPase activity, the most pronounced one on ATP-dependent H(+)-accumulation, suggesting that cadmium would interfere with membrane permeability properties. This is indeed the case. The results demonstrate that cadmium decreases passive permeability to protons. |
| |
Keywords: | Avena sativa L cadmium H+ATPase plasma membrane |
本文献已被 ScienceDirect PubMed 等数据库收录! |