Inhibitory effects of the extracts with different solvents from three compositae plants on cyanobacterium Microcystis aeruginosas

Abstract

The algicidal activity of the terrestrial plants is a novel and promising means for alga control of eutrophic waters. In this study, three compositae plants -Artemisia annua (A. annua), Conyza canadensis (C. canadensis), and Erigeron annuus (E. annuus) were selected and antialgal activity of petroleum ether (PE), ethyl acetate (EA) and ethanol extracts of these plants on blue algae Microcystis aeruginosa was investigated. The result shows the EA extracts of these plants present the stronger inhibitory effects. The results of the further separation of PE and EA extracts according to water-solubility and acidity or alkalinity show that fatty acids and terpenoids in A. annua, terpenoids and organic acid in C. Canadensis and E. Annuus may be the main antialgal active constituents. This study suggested that the EA extracts of these plants could become the potential algicide to prevent water blooming. compositae plants, fractional extraction, microcystis aeruginosa, antialgal activity

Sustainable and Ecofriendly Approach of Managing Soil Born Bacterium Ralstonia solanacearum (Smith) Using Dried Powder of Conyza canadensis

“…It is an annual plant, erecting with one to several sparse hairy stems reaching 10-180 cm high [19]. Several studies reported the antibacterial, antifungal and antiviral potential against human pathogen [20][21][22][23][24][25], however its potential to control plant pathogens and especially plant pathogenic bacteria has not been evaluated yet. The aim of this work was to evaluate the antibacterial potential of C. canadensis in vitro and the study also was extended to investigate the effect of different dried powder doses of C. canadensis against bacterial wilt disease in tomato under greenhouse conditions.…”

Assessment of the Potentially Algicidal Effects of Thymus Satureioides Coss. And Artemisia Herba Alba L. Against Microcystis Aeruginosa

“…However, little information is available on the use of medicinal plants for the treatment of bloom-forming cyanobacterium M. aeruginosa (Ni et al, 2011;, Tebaa et al, 2017.…”

Application of Selected Malaysian Wild Plant Leaves as Potential Control of Cyanobacterial Bloom

“…Hence, more scientists are in search of biologicalderived treatments as an alternative. In general, ideal anti-cyanobacterial compounds are characterized by a strong inhibition to cyanobacteria and is non-toxic to other organisms, readily degraded in the environment, inexpensive and safe to the environment [7].The effectiveness of the compounds which is influenced by hydrophilicity and hydrophobicity is also one of the important characteristics [8]. In addition, ideally, an anti-cyanobacterial compound should be able to inhibit most cyanobacterial species.…”

“…This thus leads to one of the earliest researches on anti-cyanobacterial compounds using a more natural resource; deciduous plant leaves [10]. Subsequently, more researchers observed the inhibition of cyanobacterial growth by different terrestrial plants and herbs, such as Gingko biloba [11],oak trees [12], Chinese herbs [13], andaquatic plants such as Myriophyllum spicatum [14],Pista stratiotes [15] and Hydrilla verticillata [16].Several active compounds released from plants have been successfully isolated and characterized in previous researches, which include polyphenol [17],terpenoid [8] and fatty acid [14]. These compounds inhibit growth via different pathways, such as inhibition of photosynthesis, disruption of cellular structure, and inactivation of enzymatic and non-enzymatic functions [17].…”