Titlebar

Export bibliographic data
Literature by the same author
plus on the publication server
plus at Google Scholar

 

Abscisic acid and hydraulic conductivity of maize roots: a study using cell- and root-pressure probes

Title data

Hose, Elenor ; Steudle, Ernst ; Hartung, Wolfram:
Abscisic acid and hydraulic conductivity of maize roots: a study using cell- and root-pressure probes.
In: Planta. Vol. 211 (2000) Issue 6 . - pp. 874-882.
ISSN 0032-0935
DOI: https://doi.org/10.1007/s004250000412

Abstract in another language

Using root- and cell-pressure probes, the effects of the stress hormone abscisic acid (ABA) on the water-transport properties of maize roots (Zea maps L.) were examined in order to work out dose and time responses for root hydraulic conductivity. Abscisic acid applied at concentrations of 100-1.000 nM increased the hydraulic conductivity of excised maize roots both at the organ (root Lp(r): factor of 3-4) and the root cell level (cell Lp: factor of 7-27). Effects on the root cortical cells were more pronounced than at the organ level. From the results it was concluded that ABA acts at the plasma-lemma. presumably by an interaction with water channels. Abscisic acid therefore facilitated the cell-to-cell component of transport of water across the root cylinder. Effects on cell Lp were transient and highly specific for the undissociated (+)-cis-trans-ABA. The stress hormone ABA facilitates water uptake into roots as soils start drying. especially under non-transpiring conditions. when the apoplastic path of water transport is largely excluded.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER33619
Institutions of the University: Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Chair Plant Ecology
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 24 Sep 2015 09:38
Last Modified: 24 Sep 2015 09:38
URI: https://eref.uni-bayreuth.de/id/eprint/19656