English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The effect of Li(+) on the period of the K(+) uptake rhythm in the flow medium culture of the duckweed (Lemna gibba G3) was investigated under various ionic conditions. In the presence of Li(+) at 0.2 millimolar or higher concentrations, the period was longer than the normal level of 25.4 hours by 2 hours. Li(+) also lowered the amplitude of the rhythm. Although Na(+) itself did not change any parameter of the rhythm, simultaneous application of Na(+) at a very low concentration (20 micromolar) almost completely removed the effects of 0.5 millimolar Li(+) on both the period and the amplitude. However, divalent cations (Ca(2+) and Mg(2+)) or Rb(+) did not remove the Li(+) action on the period. The effect of Li(+) and its removal by Na(+) corresponded to intracellular Li(+) and Na(+) levels. The period was prolonged when the duckweed contained more Li(+) than 5 micromoles/gram fresh weight. But the Li(+) effect was cancelled when the in vivo Na(+) level was greater than one-fifth that of Li(+), even if the Li(+) level exceeded over 5 micromoles/gram fresh weight.

Removal by a Trace of Sodium of the Period Lengthening of the Potassium Uptake Rhythm Due to Lithium in Lemna gibba G3