Iron plaques improve the oxygen supply to root meristems of the freshwater plant, Lobelia dortmanna

Research output: Contribution to journal › Journal article › Research › peer-review

Standard

Iron plaques improve the oxygen supply to root meristems of the freshwater plant, Lobelia dortmanna. / Møller, Claus Lindskov; Sand-Jensen, Kaj.

In: New Phytologist, Vol. 179, No. 3, 2008, p. 848-56.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Møller, CL & Sand-Jensen, K 2008, 'Iron plaques improve the oxygen supply to root meristems of the freshwater plant, Lobelia dortmanna', New Phytologist, vol. 179, no. 3, pp. 848-56. https://doi.org/10.1111/j.1469-8137.2008.02506.x

APA

Møller, C. L., & Sand-Jensen, K. (2008). Iron plaques improve the oxygen supply to root meristems of the freshwater plant, Lobelia dortmanna. New Phytologist, 179(3), 848-56. https://doi.org/10.1111/j.1469-8137.2008.02506.x

Vancouver

Møller CL, Sand-Jensen K. Iron plaques improve the oxygen supply to root meristems of the freshwater plant, Lobelia dortmanna. New Phytologist. 2008;179(3):848-56. https://doi.org/10.1111/j.1469-8137.2008.02506.x

Author

Møller, Claus Lindskov ; Sand-Jensen, Kaj. / Iron plaques improve the oxygen supply to root meristems of the freshwater plant, Lobelia dortmanna. In: New Phytologist. 2008 ; Vol. 179, No. 3. pp. 848-56.

Bibtex

@article{fea57210dbd711dd9473000ea68e967b,
title = "Iron plaques improve the oxygen supply to root meristems of the freshwater plant, Lobelia dortmanna",
abstract = "* High radial oxygen loss (ROL) from roots of aquatic plants to reduced sediments is thought to deplete the roots of oxygen and restrict the distribution of those species unable to form a barrier to oxygen loss. Metal precipitates with high iron content (Fe-plaques) frequently form on roots of aquatic plants and could create such a diffusion barrier, thereby diverting a larger proportion of downward oxygen transport to the root meristems. * To investigate whether Fe-plaques form a barrier to oxygen loss, ROL and internal oxygen concentrations were measured along the length of roots of the freshwater plant Lobelia dortmanna using platinum sleeve electrodes and Clark-type microelectrodes. * Measurements showed that ROL was indeed lower from roots with Fe-plaques than roots without plaques and that ROL declined gradually with thicker iron coating on roots. The low ROL was caused by low diffusion coefficients through root walls with Fe-plaques resulting in higher internal oxygen concentrations in the root lacunae. * By diverting a larger proportion of downward oxygen transport to root meristems in L. dortmanna, the presence of Fe-plaques should diminish root anoxia and improve survival in reduced sediments.",
author = "M{\o}ller, {Claus Lindskov} and Kaj Sand-Jensen",
note = "Keywords: Biological Transport; Diffusion; Fresh Water; Iron; Lobelia; Meristem; Oxygen; Plant Roots",
year = "2008",
doi = "10.1111/j.1469-8137.2008.02506.x",
language = "English",
volume = "179",
pages = "848--56",
journal = "New Phytologist",
issn = "0028-646X",
publisher = "Academic Press",
number = "3",

}

RIS

TY - JOUR

T1 - Iron plaques improve the oxygen supply to root meristems of the freshwater plant, Lobelia dortmanna

AU - Møller, Claus Lindskov

AU - Sand-Jensen, Kaj

N1 - Keywords: Biological Transport; Diffusion; Fresh Water; Iron; Lobelia; Meristem; Oxygen; Plant Roots

PY - 2008

Y1 - 2008

N2 - * High radial oxygen loss (ROL) from roots of aquatic plants to reduced sediments is thought to deplete the roots of oxygen and restrict the distribution of those species unable to form a barrier to oxygen loss. Metal precipitates with high iron content (Fe-plaques) frequently form on roots of aquatic plants and could create such a diffusion barrier, thereby diverting a larger proportion of downward oxygen transport to the root meristems. * To investigate whether Fe-plaques form a barrier to oxygen loss, ROL and internal oxygen concentrations were measured along the length of roots of the freshwater plant Lobelia dortmanna using platinum sleeve electrodes and Clark-type microelectrodes. * Measurements showed that ROL was indeed lower from roots with Fe-plaques than roots without plaques and that ROL declined gradually with thicker iron coating on roots. The low ROL was caused by low diffusion coefficients through root walls with Fe-plaques resulting in higher internal oxygen concentrations in the root lacunae. * By diverting a larger proportion of downward oxygen transport to root meristems in L. dortmanna, the presence of Fe-plaques should diminish root anoxia and improve survival in reduced sediments.

AB - * High radial oxygen loss (ROL) from roots of aquatic plants to reduced sediments is thought to deplete the roots of oxygen and restrict the distribution of those species unable to form a barrier to oxygen loss. Metal precipitates with high iron content (Fe-plaques) frequently form on roots of aquatic plants and could create such a diffusion barrier, thereby diverting a larger proportion of downward oxygen transport to the root meristems. * To investigate whether Fe-plaques form a barrier to oxygen loss, ROL and internal oxygen concentrations were measured along the length of roots of the freshwater plant Lobelia dortmanna using platinum sleeve electrodes and Clark-type microelectrodes. * Measurements showed that ROL was indeed lower from roots with Fe-plaques than roots without plaques and that ROL declined gradually with thicker iron coating on roots. The low ROL was caused by low diffusion coefficients through root walls with Fe-plaques resulting in higher internal oxygen concentrations in the root lacunae. * By diverting a larger proportion of downward oxygen transport to root meristems in L. dortmanna, the presence of Fe-plaques should diminish root anoxia and improve survival in reduced sediments.

U2 - 10.1111/j.1469-8137.2008.02506.x

DO - 10.1111/j.1469-8137.2008.02506.x

M3 - Journal article

C2 - 18513220

VL - 179

SP - 848

EP - 856

JO - New Phytologist

JF - New Phytologist

SN - 0028-646X

IS - 3

ER -

ID: 9533015