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Direct Determination of pH in the stomatal complex ofCommelina

โœ Scribed by M. G. Penny; D. J. F. Bowling

Publisher
Springer-Verlag
Year
1975
Tongue
English
Weight
210 KB
Volume
122
Category
Article
ISSN
0032-0935

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โœฆ Synopsis

The vacuolar pH of individual cells of the epidermis of intact leaves of Commelina communis L. has been determined using pH sensitive microelectrodes. The results show that the pH of the guard cells increases by approximately 0.5 units during stomatal opening. The changes in vacuolar pH mirror the changes in vacuolar potassium concentration that occur during stomatal movements.

๐Ÿ“œ SIMILAR VOLUMES

A study of potassium gradients in the ep
A study of potassium gradients in the epidermis of intact leaves ofCommelina communisL. in relation to stomatal opening
โœ M. G. Penny; D. J. F. Bowling ๐Ÿ“‚ Article ๐Ÿ“… 1974 ๐Ÿ› Springer-Verlag ๐ŸŒ English โš– 569 KB

Potassium sensitive mieroelectrodes have been used to determine the potassium content of individual epidermal cells in intact leaves of C. eommunis L. Large gradients of potassium across the stomatal complex were observed. When the stomata were open a stepwise decrease in vacuolar potassium content