
TY  - JOUR
A1  - Qiu, Quan-Sheng 
A1  - Wang, Ze-Zhou 
A1  - Zhang, Nang 
A1  - Cai, Qi-Gui 
A1  - Jiang, Rong-Xi 
T1  - Aquaporins in the plasma membrane of leaf callus protoplasts of <emph type="2">Actinidia deliciosa</emph> var. <emph type="2">deliciosa</emph> cv. Hayward
JF  - Functional Plant Biology
JO  - Functional Plant Biol.
Y1  - 2000
VL  - 27
IS  - 1
SP  - 71
EP  - 75
KW  - 
UR  - https://doi.org/10.1071/PP99033 
N2  - The water transport activity of Actinidia deliciosa protoplasts was determined using a cell imaging system. Results showed that the protoplast volume increased swiftly when placed in a hypoton-ic medium, and also increased with an increase in medium osmotic gradients. The osmotic water permeability coefficient (Pf) values were 0.118 &#215; 10&#8211;3, 0.121 &#215; 10&#8211;3, and 0.133 &#215; 10&#8211;3 cm s&#8211;1 when the osmotic gradients were 75, 100, and 125 mosmol, respectively. The water transport activity of protoplas-ts could be inhibited by HgCl2 and stimulated by amphotericin B. Moreover, ZnCl2 and ZnSO4 had a significant inhibitory effect on the water transport activity of the protoplasts. Our results indicate that the Actinidia deliciosa protoplasts had properties typical of aquaporins, suggesting that aquaporins were present at the plasma membrane. 
ER  -

