Control of Plant Development by Hydro-Electrochemical Signal Transduction: a Means for Understanding Photoperiodic Flower Induction

Wagner, Edgar; Lehner, Lars; Veit, Justyna; Normann, Johannes; Vervliet-Scheebaum, Marco; Albrechtová, Jolana T. P.

doi:10.1007/978-3-540-37843-3_21

Cited by 3 publications

(1 citation statement)

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“…The other is the drop of xylem pressure with an increase in transpiration, as suggested by the existence of mechano-sensory ion channels in Chara cell membrane and the transformation of pressure signal to electric signal (Shimmen 2006). In this prospect, an interesting possibility of electrical and hydraulic long-distance signaling is suggested in higher plants (Wagner et al 2006).…”

Section: Discussionmentioning

confidence: 98%

Correlation between the seasonal changes in electrogenic activity across root xylem/symplast interface, sap-flow rate and xylem pressure in field trees (Diospyros kaki)

Masaki¹,

Okamoto

2007

Trees

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To investigate the seasonal changes in the physiological activity of the roots in field trees, Diospyros kaki, we carried out simultaneous and continuous measurements of the trans-root electric potential (TRP), of the rate of sap-flow with transpiration and of the xylem pressure (Px) through several years. The amplitude of the diurnal change and its temperature dependency of both TRP and Px began to increase in late January. These parameters attained their maxima in the late defoliate phase just before unfolding of new leaves at the end of March, thereafter rapidly went down to their minimal levels with increasing transpiration. The low levels continued during the foliate stage until December, and the pattern of the seasonal change in Px was inverse of that in the sap-flow rate. The role of the electrogenic ion pump activity across the interface between root-symplast and xylem vessel as a driving force for acropetal water transport is discussed in relation to those seasonal changes.

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Section: Discussionmentioning

confidence: 98%