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The singular molecular conformation of humic acids in solution influences their ability to enhance root hydraulic conductivity and plant growth

Olaetxea, Maite et al · Molecular Diversity Preservation International · 2020

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Author / responsible party
Olaetxea, Maite et al
Publisher
Molecular Diversity Preservation International
Year
2020
ISSN
1420-3049
ISSN
1420-3049
Language
English

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Some studies have reported that the capacity of humic substances to improve plant growth is dependent on their ability to increase root hydraulic conductivity. It was proposed that this effect is directly related to the structural conformation in solution of these substances. To study this hypothesis, the effects on root hydraulic conductivity and growth of cucumber plants of a sedimentary humic acid and two polymers-polyacrylic acid and polyethylene glycol-presenting a molecular conformation in water solution different from that of the humic acid have been studied. The results show that whereas the humic acid caused an increase in root hydraulic conductivity and plant growth, both the polyacrylic acid and the polyethylene glycol did not modify plant growth and caused a decrease in root hydraulic conductivity. These results can be explained by the different molecular conformation in water solution of the three molecular systems. The relationships between these biological effects and the molecular conformation of the three molecular systems in water solution are discussed. Fil: Olaetxea, Maite. Universidad de Navarra; España Fil: Mora, Maria Veronica. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Instituto de Investigaciones Agrobiotecnológicas. - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones Agrobiotecnológicas; Argentina

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APA 7

Olaetxea, M. E. A. (2020). The singular molecular conformation of humic acids in solution influences their ability to enhance root hydraulic conductivity and plant growth. http://hdl.handle.net/11336/146484

MLA

Olaetxea, Maite et al. "The singular molecular conformation of humic acids in solution influences their ability to enhance root hydraulic conductivity and plant growth." 2020. http://hdl.handle.net/11336/146484.

Chicago

Olaetxea, Maite et al. 2020. "The singular molecular conformation of humic acids in solution influences their ability to enhance root hydraulic conductivity and plant growth.". http://hdl.handle.net/11336/146484.

Harvard

Olaetxea, M. E. A. 2020, The singular molecular conformation of humic acids in solution influences their ability to enhance root hydraulic conductivity and plant growth, Molecular Diversity Preservation International, available at: http://hdl.handle.net/11336/146484 [Accessed 8 Aug. 2026].

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Title
The singular molecular conformation of humic acids in solution influences their ability to enhance root hydraulic conductivity and plant growth
Author / contributors
Olaetxea, Maite et al
Publisher
Molecular Diversity Preservation International
Publication year
2020
ISSN
1420-3049
ISSN
1420-3049
Language
English

Subjects

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BIOMOLECULES; HUMIC SUBSTANCES; MOLECULAR CONFORMATION; PLANT GROWTH IMPROVEMENT; POLYACRYLIC ACID; POLYETHYLENE GLYCOL; https://purl.org/becyt/ford/1.7; https://purl.org/becyt/ford/1
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