| Range |
Table - link %
|
| Organism |
Asiatic dayflower Commelina communis |
| Reference |
Leigh R.A. (1997). Solute composition of vacuoles. In Advances in Botanical Research, Vol. 25: The Plant Vacuole, Leigh R.A., Sanders D., eds (London:Academic Press), pp. 171–194. p.178 table II |
| Primary Source |
Penny, M. G. and Bowling, D. J. F. (1975). Direct determination of pH in the stomatal complex of Commelina. Planta 122, 209-212. & Penny, M. G. and Bowling, D. J. F. (1974). A study of potassium gradients in the epidermis of intact leaves of Commelinii communis L. in relation to stomatal opening. Planta 119, 17-25. & Penny, M. G., Kelday, L. S. and Bowling, D. J. F. (1976). Active chloride transport in the leaf epidermis of Commelina communis in relation to stomatal activity. Planta 130, 291-294PubMed ID24435970, 24442405, 24424642
|
| Method |
Ion-selective microelectrode measurements |
| Comments |
"[Ion-selective microelectrode measurements] are useful
because they provide a direct determination of activity which is more
thermodynamically relevant than concentration and, by necessity, the results
are from individual cells. The value of this approach is exemplified by the
work of Penny and Bowling (primary sources), who used
different types of ion-selective electrodes to measure the changes in ion
concentrations in different cells of the stomatal complex of Commelina
communis during opening and closing. The results (Table II) show that there
are large differences in pH and K+ and CI- concentrations in different cell
types in the complex and that the directions of the ion gradients between
different cells are reversed during opening and closing of the stomatal pore." |
| Entered by |
Uri M |
| ID |
110399 |