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The effects of ABA on channel mediated K+ transport across higher plant roots.

Roberts, Stephen K. and Snowman, Benjamin N. (2000) The effects of ABA on channel mediated K+ transport across higher plant roots. Journal of Experimental Botany, 51 (350). pp. 1585-1594. ISSN 1460-2431

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Abstract

The transport and accumulation of K+ in higher plant roots is regulated by ABA. Molecular and electrophysiological techniques have identified a number of discrete transporters which are involved in the translocation of K+ from the soil solution to the shoots of higher plants. Furthermore, recent reports have shown that ABA regulates K+ channel activity in maize and Arabidopsis roots which suggests that ABA regulation of K+ transport in roots is, at least in part, ion channel-mediated. The signalling processes which underlie the ABA regulation of K+ channels have been investigated. The effects of ABA on the membrane potential of intact maize root cells were also studied. It was found that ABA regulated the membrane potential of root cells and that this regulation is consistent with the hypothesis that ABA-induced K+ accumulation in roots is mediated by K+ channels.

Item Type: Article
Journal or Publication Title: Journal of Experimental Botany
Uncontrolled Keywords: ABA ; K+ channels ; roots ; maize.
Subjects: Q Science > QH Natural history > QH301 Biology
Departments: Faculty of Health and Medicine > Biomedical & Life Sciences
ID Code: 9503
Deposited By: Dr Stephen K Roberts
Deposited On: 12 Jun 2008 11:47
Refereed?: Yes
Published?: Published
Last Modified: 26 Jul 2012 18:38
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/9503

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