Persistent Rhythms of O₂-Consumption in Potatoes, Carrots and the Seaweed, Fucus.

Arabidopsis thaliana root elongation growth is sensitive to lunisolar tidal acceleration and may also be weakly correlated with geomagnetic variations

“…There are a number of older reports about the responses of plants to magnetic, geomagnetic and atmospheric ion and atmospheric pressure effects, and their possible link with lunar phase (Brown et al, 1955;Pittman, 1963Pittman, , 1965Maw, 1967;Abrami, 1972). After some years of neglect, this type of work has been pursued more actively in the light of some of these factors' possible contribution and application not only to plant growth and productivity (Hajnorouzi et al, 2011;Radhakrishnan et al, 2012) but also in relation to their effects upon ecosystem viability (Khabarova et al, 2010).…”

A Diurnal Activity Rhythm in Plethodon Cinereus and Its Modification by an Influence Having a Lunar Frequency

“…Lunar periodicities in marine animals are well known (Korringa, 1947). That lunar influences may also be significant in the metabolic rhythms of terrestrial organisms has been indicated by recent works (Brown, Freeland and Ralph, 1955;Ralph, 1957). The present study was undertaken in order to examine the activity behavior of a terrestrial animal, the salamander, Plethodon cinereus, and to analyze it for lunar influences.…”

“…Since the period of study extended through only one lunar cycle, it cannot be unequivocably stated that the lunar-frequency modulation constitutes a lunar rhythm, but due to its close correlation with the lunar cycle and the similarity of this modulation with lunar rhythms that have previously been described (cf. Brown, Freeland and Ralph, 1955), it appears very likely that it is a lunar rhythm.…”

Partial purification and preliminary characterization of pyruvate kinase from the brown algaAscophyllum nodosum

“…Thus, the increase in cellular ATP concentrations during the light (Weidner et al, 1975;Steer, 1979) might inhibit PK, while the decrease in ATP and concurrent increase in AMP in the dark (Weidner, et al, 1975;Steer, 1979) could reactivate the enzyme. It should be noted, however, that the evidence for a diurnal variation in the respiratory capacity of brown algae (Brown, Freeland & Ralph, 1955;MacRae & Chapman, 1977) suggests that the regulation of PK activity cannot be explained simply in terms of enzyme activation and inactivation. The inhibition of PK by ATP and the Krebs TCA cycle intermediates citrate, fumarate and succinate (Table II) would be consistent with fine control of the rate of respiration by means of negative feedback.…”