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A Novel Approach to the Water Uptake Dynamics in Roots of Maize, Wheat and Barley Under Salt Stress

The water uptake dynamics in maize, wheat, and barley under salt stress were investigated with a xylem pressure probe. The average xylem pressure responses to salt stress in the three plants were 36, 93, and 89% of the osmotic stresses for maize, wheat, and barley, respectively, which are significan... Full description

Journal Title: Journal of Integrative Agriculture April 2012, Vol.11(4), pp.576-584
Main Author: Bu, Qing-Mei
Other Authors: Bian, Dian-Xia , Liu, Lin-de , Zhu, Jian-Jun
Format: Electronic Article Electronic Article
Language: English
Subjects:
Quelle: ScienceDirect Journals (Elsevier)
ID: ISSN: 2095-3119 ; DOI: 10.1016/S2095-3119(12)60044-6
Link: https://www.sciencedirect.com/science/article/pii/S2095311912600446
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recordid: elsevier_sdoi_10_1016_S2095_3119_12_60044_6
title: A Novel Approach to the Water Uptake Dynamics in Roots of Maize, Wheat and Barley Under Salt Stress
format: Article
creator:
  • Bu, Qing-Mei
  • Bian, Dian-Xia
  • Liu, Lin-de
  • Zhu, Jian-Jun
subjects:
  • Maize
  • Wheat
  • Barley
  • Salt Stress
  • Xylem Pressure
  • Water Transport
  • Agriculture
ispartof: Journal of Integrative Agriculture, April 2012, Vol.11(4), pp.576-584
description: The water uptake dynamics in maize, wheat, and barley under salt stress were investigated with a xylem pressure probe. The average xylem pressure responses to salt stress in the three plants were 36, 93, and 89% of the osmotic stresses for maize, wheat, and barley, respectively, which are significantly smaller than the magnitude of the osmotic stresses being applied. In order to explain the thermodynamic discrepancies among the water potential changes in the root xylem of the three plants, a novel approach, tentatively named the “symplastic flow dilution model” was proposed in this paper. The model was presented in an attempt to give answers to the problem of how the roots under salt stress could absorb water when the water potential of the xylem sap is considerably higher than that of the solution in the root ambient. According to the model, the salt solution in the microenvironment of the endodermis of a root was diluted to some extent by the efflux from cells so the central...
language: eng
source: ScienceDirect Journals (Elsevier)
identifier: ISSN: 2095-3119 ; DOI: 10.1016/S2095-3119(12)60044-6
fulltext: fulltext
issn:
  • 2095-3119
  • 20953119
url: Link


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titleA Novel Approach to the Water Uptake Dynamics in Roots of Maize, Wheat and Barley Under Salt Stress
creatorBu, Qing-Mei ; Bian, Dian-Xia ; Liu, Lin-de ; Zhu, Jian-Jun
ispartofJournal of Integrative Agriculture, April 2012, Vol.11(4), pp.576-584
identifierISSN: 2095-3119 ; DOI: 10.1016/S2095-3119(12)60044-6
subjectMaize ; Wheat ; Barley ; Salt Stress ; Xylem Pressure ; Water Transport ; Agriculture
descriptionThe water uptake dynamics in maize, wheat, and barley under salt stress were investigated with a xylem pressure probe. The average xylem pressure responses to salt stress in the three plants were 36, 93, and 89% of the osmotic stresses for maize, wheat, and barley, respectively, which are significantly smaller than the magnitude of the osmotic stresses being applied. In order to explain the thermodynamic discrepancies among the water potential changes in the root xylem of the three plants, a novel approach, tentatively named the “symplastic flow dilution model” was proposed in this paper. The model was presented in an attempt to give answers to the problem of how the roots under salt stress could absorb water when the water potential of the xylem sap is considerably higher than that of the solution in the root ambient. According to the model, the salt solution in the microenvironment of the endodermis of a root was diluted to some extent by the efflux from cells so the central...
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The water uptake dynamics in maize, wheat, and barley under salt stress were investigated with a xylem pressure probe. The average xylem pressure responses to salt stress in the three plants were 36, 93, and 89% of the osmotic stresses for maize, wheat, and barley, respectively, which are significantly smaller than the magnitude of the osmotic stresses being applied. In order to explain the thermodynamic discrepancies among the water potential changes in the root xylem of the three plants, a novel approach, tentatively named the “symplastic flow dilution model” was proposed in this paper. The model was presented in an attempt to give answers to the problem of how the roots under salt stress could absorb water when the water potential of the xylem sap is considerably higher than that of the solution in the root ambient. According to the model, the salt solution in the microenvironment of the endodermis of a root was diluted to some extent by the efflux from cells so the central...

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The water uptake dynamics in maize, wheat, and barley under salt stress were investigated with a xylem pressure probe. The average xylem pressure responses to salt stress in the three plants were 36, 93, and 89% of the osmotic stresses for maize, wheat, and barley, respectively, which are significantly smaller than the magnitude of the osmotic stresses being applied. In order to explain the thermodynamic discrepancies among the water potential changes in the root xylem of the three plants, a novel approach, tentatively named the “symplastic flow dilution model” was proposed in this paper. The model was presented in an attempt to give answers to the problem of how the roots under salt stress could absorb water when the water potential of the xylem sap is considerably higher than that of the solution in the root ambient. According to the model, the salt solution in the microenvironment of the endodermis of a root was diluted to some extent by the efflux from cells so the central...

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