Die Bedeutung der Aquaporine am Streckungswachstum des Hypokotyls von Ricinus-Keimlingen

DFG We1680/4

From 01/1999 to 06/2005

Principal Investigator: Alfons Weig
Staff: Daniel Eisenbarth

Many physiological processes in plants such as growth, movement, and phloem and xylem transport are dependent on concomitant water flow. The identification of aquaporins as the molecular basis of transmembrane water flow has dramatically stimulated research efforts in this field because the rate of water flow across a membrane is - in addition to physical properties – also dependent on the amount and regulation of aquaporins. Aquaporins are encoded in a large gene family and some of these proteins are very abundant in membranes. The biological role of aquaporins has often be deduced from indirect observations and the regulation on the gene and protein level is hardly known.

Our aim is to investigate the biological role of aquaporins during elongation growth of Ricinus communis hypocotyls. This model plant offers the opportunity to investigate the on- and offset of elongation growth and to investigate the effect of environmental factors on the aquaporin activity.

The identification of aquaporins at the ,olecular basis for transmembrane water flow by Peter Agre and coworkers at Johns Hopkins University, USA, has been honored in 2003 with the Nobel Price in Chemistry

List of publications of this Project

Eisenbarth, DA; Weig, A R: Dynamics of Aquaporins and Water Relations during Hypocotyl Elongation in Ricinus communis L. Seedlings, J. Experimental Botany, 56, 1831-1842 (2005), doi:10.1093/jxb/eri173 -- Details
Eisenbarth, DA; Weig, A R: Sucrose carrier RcSCR1 is involved in sucrose retrieval, but not in sucrose unloading in growing hypocotyls of Ricinus communis L., Plant Biology, 7(1), 98-103 (2005), doi:10.1055/s-2004-830448

last modified 2013-07-05