The riddle of root pressure. II. Root exudation at extreme osmolalities

Functional Plant Biology : FPB
William F Pickard

Abstract

To test the predictions of a recent theory of root pressure and exudation, exudation from detopped tomato seedlings was studied. Experimental findings were generally in qualitative accord with the theory. Two confirmed predictions are of particular interest. First, when a normally exuding stump was challenged by having its roots exposed to concentrated osmolyte, the exudation rate dropped quickly to zero but later often recovered to a higher level. Second, when exudation from a plant challenged by concentrated osmolyte did not recover, flushing the soil solution away with tap water usually resulted in a sudden resumption of exudation followed by a rapid falloff.

Citations

Apr 17, 2007·Journal of Biosciences·Steven Vogel
Jul 1, 2008·Journal of Mathematical Biology·William F Pickard
Apr 1, 2014·Functional Plant Biology : FPB·Wieland FrickeThorsten Knipfer
Dec 7, 2013·Journal of Experimental Botany·Lars H Wegner
Jul 1, 2009·Functional Plant Biology : FPB·William F Pickard, Barbara Abraham-Shrauner
Sep 11, 2014·Journal of Experimental Botany·John A Raven, Martina A Doblin
Oct 19, 2016·Plant, Cell & Environment·Wieland Fricke
Nov 19, 2020·The New Phytologist·H Jochen SchenkTeemu Hölttä
May 11, 2021·Plant Physiology and Biochemistry : PPB·Jiakun YanXiaolin Wang

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