Ytterbium increases transmembrane water transport in Zea mays roots via aquaporin modulation

In our study, the rare earth element ytterbium (Yb 3+ ) was demonstrated to affect water exchange in roots of Zea mays seedlings. Herewith, the overall membrane permeability (P d ) increased. The P d increase was determined by aquaporin activity but not the membrane lipid component since the closure...

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Bibliographic Details
Published in:Biometals 2019-12, Vol.32 (6), p.901-908
Main Authors: Vorob’ev, Vladimir N., Sibgatullin, Timur A., Sterkhova, Kseniya A., Alexandrov, Evgeniy A., Gogolev, Yuri V., Timofeeva, Olga A., Gorshkov, Vladimir Y., Chevela, Vladimir V.
Format: Article
Language:English
Subjects:
Aquaporins
Aquaporins - metabolism
Biochemistry
Biomedical and Life Sciences
Cell Biology
Cell Membrane - drug effects
Cell Membrane - metabolism
Cell Membrane Permeability - drug effects
Gene expression
Hydraulic equipment
Hydrogen-Ion Concentration
Life Sciences
Lipids
Medicine/Public Health
Membrane permeability
Membranes
Metals
Microbiology
Pharmacology/Toxicology
Plant growth
Plant Physiology
Plant Roots - drug effects
Plant Roots - metabolism
Proton Magnetic Resonance Spectroscopy
Rare earth elements
Roots
Seedlings
Seeds - drug effects
Seeds - growth & development
Seeds - metabolism
Water - chemistry
Water - metabolism
Water exchange
Water transport
Ytterbium
Ytterbium - chemistry
Ytterbium - pharmacology
Zea mays
Zea mays - drug effects
Zea mays - growth & development
Zea mays - metabolism
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Summary:In our study, the rare earth element ytterbium (Yb 3+ ) was demonstrated to affect water exchange in roots of Zea mays seedlings. Herewith, the overall membrane permeability (P d ) increased. The P d increase was determined by aquaporin activity but not the membrane lipid component since the closure of aquaporin channels due to low intracellular pH abolished the positive effect of Yb 3+ on P d . Additionally, the expression level of aquaporin genes ZmPIP2;2, ZmPIP2;6 and ZmTIP2;2 was increased when plants were grown in the presence of Yb 3+ . Our results indicate that previously described positive influence of rare earth metals on plant growth and productivity may be mediated (at least partially) by the modification of the plant hydraulic system.
ISSN:0966-0844
1572-8773
DOI:10.1007/s10534-019-00221-4