Transfer of Lemna minor fronds to adverse or stress conditions produces a large increase in the rate of protein degradation. Cycloheximide partially inhibits stress-induced protein degradation and also partially inhibits the protein degradation which occurs in the absence of stress. The increased protein degradation does not appear to be due to an increase in activity of soluble proteolytic enz...

Toxic heavy metal pollution of water and soil is a major environmental concern for which conventional remediation approaches do not provide an appropriate solution. Phytoremediation, which involves removal of pollutants from water and soil through plants, is of low cost and environmentally friendly. In this study, the phytoremediation potential of Lemna minor for the uptake of Cr(VI) at the opt...

The entrainability of Lemna perpusilla CO(2) output by periodic 15 minute red (R) and far red (F) illuminations was tested in low nitrate medium. R every 8 hour, symbolized R/R/R, gives a flat output (no entrainment) as does F/F/F. However, R/-/- (R every 24 hour) entrains rapidly, and F/-/- does so as well, in a similar manner. The effects of R/R/- and F/F/- also resemble each other closely. E...

El presente trabajo de investigación, tiene por objetivo evaluar la fitorremediación del ión cobre mediante especie lenteja agua (Lemna minor) en aguas residuales mineras; para ello, se preparó el con iones a una concentración 4,780 ppm; teniendo como referencia descarga un efluente mineras, tejido vegetal estuvo varias semanas contacto cobre, solución nutritiva Lemna minor, llevó cabo planta y...

The effect of duckweed species composition (Lemna aequinoctialis 5505, Landoltia punctata 5506 and Spirodela polyrhiza 5507) in polyculture and monoculture on biomass and starch/protein content were investigated at different levels of temperature, light intensity, nitrogen and phosphorus concentrations. The three growth parameters significantly affect duckweed biomass accumulation. Different co...

To assess the tolerance and effect of heavy metals pollution on the duckweed Lemna minor, the aquatic plants were exposed to different concentrations of copper (Cu), nickel (Ni), cadmium (Cd) and zinc (Zn) in a quarter Coïc and Lessaint solution at pH = 6.1 (± 0.1) and under a daily regime of 16 h light (101 μmol/m2.s1). Copper at 0.2 mg/L and nickel at 0.5 mg/L promoted the growth of Lemna fro...

A new method is described for measuring environmental stress through the use of the duckweed (Lemna minor) rhizosphere.