Effect of auxin (IAA) on SV channels and volume changes in vacuoles isolated from red beet (Beta vulgaris L.) taproots

• Autorzy: Burdach Z. , Siemieniuk A. , Kurtyka R. , Karcz W.
• Języki publikacji: EN

Abstrakty

EN

The plant cell vacuoles play an important role in many physiological functions i.a. regulation of turgor pressure, which is essential for auxin-induced cell elongation growth. In the vacuolar membrane of higher plants two major ion currents are mediated by non-selective slowly (SV) and fast (FV) activating cation channels. The aim of the present study was to determine the effect of indole-3-acetic acid (IAA) on SV channel activity and volume changes in red beet taproots vacuoles. The SV channels were studied by the patch-clamp technique. The diameter of vacuoles was measured by means of microscope equipped with camera. It was found that in symmetrical 100 mM KCl, IAA at 1 µM inhibited SV channels activity. We have also showed that the incubation of vacuoles in the presence of IAA caused an increase in volume of vacuoles.

• Wydawca: -
• Czasopismo: Acta Neurobiologiae Experimentalis
• Rocznik: 2014
• Tom: 74
• Numer: 3
• Opis fizyczny: p.331

Twórcy

autor

Burdach Z.

• Department of Plant Physiology, Faculty of Biology, University of Silesia, Katowice, Poland

autor

Siemieniuk A.

• Department of Plant Physiology, Faculty of Biology, University of Silesia, Katowice, Poland

autor

Kurtyka R.

• Department of Plant Physiology, Faculty of Biology, University of Silesia, Katowice, Poland

autor

Karcz W.

• Department of Plant Physiology, Faculty of Biology, University of Silesia, Katowice, Poland