Lack of active K+ uptake in aeroponically grown wheat seedlings

Ferenc Zsoldos, Ágnes Vashegyi, L. Erdei

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The K+ (86Rb+) uptake and the growth of intact wheat seedlings (Triticum aestivum L. cv. GK Szeged) grown in 0.5 mM CaCl2 solution and of seedlings grown on wet filter paper in Petri dishes were compared under different experimental conditions. Aeroponic (AP) and hydroponic (HP) conditions brought about striking differences in the growth of the roots, whereas the shoot growth was not influenced. The dry weight of the roots was higher for the AP plants than for the HP plants. The AP grown seedlings exhibit a low rate of K+ uptake, which seems to be a passive process. The effect of 2, 4–dinitrophenol (2, 4–DNP) clearly shows the absence of an active component of the K+ uptake in roots grown in air with a high relative humidity. In plants grown under AP conditions the effect of Ca2+ on the K+ uptake is unfavourable, i.e. there is an inhibition (negative Viets effect). Results relating to the effect of 2,4–DNP suggest that the “negative Viets effect” is a feature of the passive K+ uptake. The data suggest that the AP growth conditions play a very important role in the induction and/or development of the ion transport system(s), which becomes impaired under the AP conditions.

Original languageEnglish
Pages (from-to)359-364
Number of pages6
JournalPhysiologia Plantarum
Volume71
Issue number3
DOIs
Publication statusPublished - Jan 1 1987

Fingerprint

Seedlings
Triticum
Hydroponics
uptake mechanisms
wheat
seedlings
Growth
hydroponics
Ion Transport
Humidity
Air
ion transport
Weights and Measures
aeroponics
root growth
relative humidity
Triticum aestivum
calcium
air
shoots

Keywords

  • 2,4–DNP
  • Aeroponic growth
  • calcium content
  • hydroponic growth
  • potassium content
  • potassium uptake
  • Triticum aestivum

ASJC Scopus subject areas

  • Physiology
  • Genetics
  • Plant Science
  • Cell Biology

Cite this

Lack of active K+ uptake in aeroponically grown wheat seedlings. / Zsoldos, Ferenc; Vashegyi, Ágnes; Erdei, L.

In: Physiologia Plantarum, Vol. 71, No. 3, 01.01.1987, p. 359-364.

Research output: Contribution to journalArticle

Zsoldos, Ferenc ; Vashegyi, Ágnes ; Erdei, L. / Lack of active K+ uptake in aeroponically grown wheat seedlings. In: Physiologia Plantarum. 1987 ; Vol. 71, No. 3. pp. 359-364.
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