The use of constructed wetlands for purifying pre-treated wastewater is a cost effective technology that has been found to be more appropriate for many developing countries. The technology is also environmentally friendly with the wetlands being habitats for many water birds and other aquatic organisms. This study assessed nutrient removal efficiency of two floating macrophytes (Lemna minor...

Growing travel and trade threatens biodiversity as it increases the rate of biological invasions globally, either by accidental or intentional introduction. Therefore, avoiding these impacts by forecasting invasions and impeding further spread is of utmost importance. In this study, three forecasting approaches were tested and combined to predict the invasive behaviour of the alien macrophyte L...

The statistical analysis revealed that 10g and 20g extracts of all the tested plants significantly inhibited the growth of Lemna minor with significant differences. The plants means were non-significant while the interaction between extracts and plants was significant. Fagonia cretica, Peganum harmala, Tribulus terrestris, Chrozophora tinctoria and Ricinus communis caused significant growth inh...

Plants are the natural factories for the synthesis of variety of bioactive compounds. This diverse chemical setup of the plants speaks their important role as biomedicine. These biomolecules are often toxic to both plants and animals. The methanolic extract of Calendula arvensis was screened for its toxic potential against Lemna minor, Artimia salina (Brine shrimps) larvae and some important gr...

In this study, the epiphytic algae of Lemna minor collected from its natural habitat or grown in aquarium were analyzed for a period of six months from April 2016 to September 2016. While a total of 15 taxa, 1 belonging to Cyanophyta and 14 belonging to Bacillariophyta, were recorded for L. minor grown in aquarium, a total of 36 taxa, 3 belonging to Cyanophyta, 5 belonging to Chlorophyta, 1 bel...

A sensitive and specific method was developed for assay of aspartokinase (EC 2.7.2.4) in crude extracts of Lemna paucicostata. Lysine inhibited approximately 93%, and threonine approximately 6%; together, these amino acids inhibited 99%. Inhibition by lysine was synergistically increased by S-adenosylmethionine, which by itself had no effect on activity. Essentially complete inhibition of threo...

During initial exposure to 40 nanomolar propargylglycine (PAG), Lemna paucicostata colonies undergo abnormal fragmentation and a lag in frond emergence, most severe at 24 to 48 hours. Thereafter, frond emergence resumes and the frond/colony ratio rises. Such ;adapted' plants withstand subculture into the same concentration of PAG without fragmentation or decreases in frond emergence, and displa...