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Dynamics of aquaporins and water relations during hypocotyl elongation in Ricinus communis L. seedlings

Title data

Eisenbarth, Daniel A. ; Weig, Alfons:
Dynamics of aquaporins and water relations during hypocotyl elongation in Ricinus communis L. seedlings.
In: Journal of Experimental Botany. Vol. 56 (2005) Issue 417 . - pp. 1831-1842.
ISSN 1460-2431
DOI: https://doi.org/10.1093/jxb/eri173

Abstract in another language

The rate of water flow across biological membranes can be modulated by aquaporins which are expressed in many cells and tissues. The biological functions of these water channels in cellular processes have often been anticipated from the expression pattern, although the participation in the underlying process is not known in many cases. Ten putative aquaporin transcripts were identified in castor bean (Ricinus communis L.) seedlings and the water channel activity of three selected genes was analysed by heterologous expression in Xenopus oocytes, as well as the spatial and temporal expression by in situ hybridization/immunolocalization along the hypocotyl's axis. Water relations parameters were studied in elongating and non-elongating tissues using the cell pressure probe technique. These results indicate that (i) the amount of the RcPIP2-1 aquaporin correlated best with the elongation activity of the etiolated hypocotyl and (ii) the hydraulic conductivity of cortex cells is significantly higher in the elongating region of the hypocotyl compared with the non-elongating, mature region.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER29324
Institutions of the University: Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Chair Plant Physiology
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 500 Science
500 Science > 570 Life sciences, biology
Date Deposited: 21 May 2014 10:19
Last Modified: 09 Mar 2016 15:21
URI: https://eref.uni-bayreuth.de/id/eprint/405