Differential responses of eight cyanobacterial and green algal species, to carbamate insecticides

Ma, Jing; Lu, Ninghai; Qin, Wendi; Xu, Renjie; Wang, Yunbing; Chen, Xining

doi:10.1016/j.ecoenv.2004.12.002

Cited by 97 publications

(35 citation statements)

References 27 publications

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“…Risk resulting by mancozeb exposure was the highest than methomyl, carbosulfan and carbendazim as illustrated before. Similar differential responses of eight cyanobacteria and green algal species to five carbamate insecticides were reported (Ma et al, 2006;Pereira and Gonçalves, 2007) and the toxicity of these pollutants resulted in a shift from dominance by green algae to dominance by cyanobacteria and may sustain cyanobacterial blooms at particular times. There are, up to now, few reports describing the differential sensitivity of the green algae and cyanobacteria to different pollutants including pesticides.…”

Section: Discussionsupporting

confidence: 62%

Ecological Hazards of Some Pesticides on Unicellular Freshwater Green Alga; Pseudokirchneriella subcapitata

Abdallah

Goud

Talha

2012

Alexandria Science Exchange Journal: An International Quarterly

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Aquatic toxicity and differential sensitivity of different pesticide categories on freshwater green alga; Pseudokirchneriella subcapitata were investigated. In this context, growth-inhibiting tests of 14 pesticides (including 4 fungicides; 4 acaricides/ nematicides and 6 insecticides) were carried out. Based on IC 50 values, P. subcapitata was more sensitive to many pesticides (mostly fungicides and acaricides/ nematicides) and less sensitive to insecticides. The test alga was tolerant to carbendazim, while it was highly susceptible to prochloraz. According to estimated risk phrases, the decreasing order of the potential aquatic ecosystem risk imposed by the tested pesticides was prochloraz > mancozeb+metalaxyl > chlorpyrifos-methyl > chlorpyrifos > imidaclopride > profenofos > fenamifos > malathion > dimethoate > methomyl > thiallophanate-methyl > carbosulfan > mineral oil > carbendazim. In conclusion, the results of this study clearly emphasize the importance of estimating risk phrases when assessing the pesticide stress on aquatic ecosystems and indicated that the tested pollutants may imbalance the aquatic ecosystem and cause a shift of algal species dominance. Such speculations need further more studies to fully understand the processes involved in pesticide toxicity.

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Section: Discussionsupporting

confidence: 62%

Ecological Hazards of Some Pesticides on Unicellular Freshwater Green Alga; Pseudokirchneriella subcapitata

Abdallah

Goud

Talha

2012

Alexandria Science Exchange Journal: An International Quarterly

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“…This is in agreement with the observed antibacterial activity of photosensitive nanomaterials under both dark and light conditions [34], suggestive of mechanisms other than photocatalytical ROS contributing to cytotoxicity. Alteration in composition of an aquatic community as a result of toxic stress has been reported to affect structure and functioning of the entire ecosystem [35]. The photosynthetic green algae, both unicellular and multicellular, are known to be sensitive to chemicals, and have been considered indicators of bioactivity of industrial waste [36].…”

Section: Resultsmentioning

confidence: 99%

Effect of Silver Nanoparticles on Growth of Eukaryotic Green Algae

et al. 2012

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Abstract:Silver nanoparticles, endowed with powerful antimicrobial property, are the most widely used nanomaterial in consumer products, with associated risk of their easy access to environment and freshwater ecosystems by surface runoff. Although toxic effects of nanosilver on bacterial, fungal and mammalian cells have been documented, its impact on algal growth remains unknown. Pithophora oedogonia and Chara vulgaris are predominant members of photosynthetic eukaryotic algae, which form major component of global aquatic ecosystem. Here we report for the first time that nanosilver has significant adverse effects on growth and morphology of these filamentous green algae in a dose-dependent manner. Exposure of algal thalli to increasing concentrations of silver nanoparticles resulted in progressive depletion in algal chlorophyll content, chromosome instability and mitotic disturbance, associated with morphological malformations in algal filaments. SEM micrographs revealed dramatic alterations in cell wall in nanoparticle-treated algae, characterized with cell wall rupture and degradation in Pithophora. Although these observations underscore severe deleterious effects of nanosilver on aquatic environment, the information can also be exploited as a bioengineering strategy to control unwanted and persistent growth of noxious algal weeds that clog the municipal water supply and water channels and produce fouling of water bodies.

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“…A lot of articles have been published on the comparative sensitivity of mixed various green algae populations towards pesticides Ma et al 2006;Junghans et al 2003;Ma 2003). Yet there are few reports concerning the differential response of various cyanobacteria and green algae species (Ma et al 2005).…”

Section: Introductionmentioning

confidence: 99%

The Effect of Salicylic Acid and Triacontanol on Biomass Production and Imidaclopirid Removal Capacity by Cyanobacteria

Aminfarzaneh¹,

Duygu²

2010

Communications, Faculty of Science, University of Ankara Series C Biology, Geological Engineering and Geophysical Engineering

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Pesticide removal capacities of Synechocystis sp. and Phormidium sp. were investigated in BG11 media. Imidacloprid (IMI) is a widely used systemic insecticide to control plant pests following soil, seed or foliar applications, and is subject to cleaning. Bioremoval is one of the economical water treatment techniques in remediation. Trials were carried out at pH 7.5 for IMI at media with and without triacontanol (TRIA), a naturally occuring plant hormone and Salicylic acid (SA). The removal capacities of Synechocystis sp. and Phormidium sp. were found higher in media containing TRIA and Salicylic acid. The removal efficiencies were measured at 150 mg L -1 concentrations of IMI. Synechocystis sp. and Phormidium sp. had the maximum values of removal of IMI in the media containing the hormone and Salicylic acid. The results showed that TRIA and Salicylic acid could be considered as a stimulant in pesticide removal by the isolated cyanobacteria cultures.

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Differential responses of eight cyanobacterial and green algal species, to carbamate insecticides

Cited by 97 publications

References 27 publications

Ecological Hazards of Some Pesticides on Unicellular Freshwater Green Alga; Pseudokirchneriella subcapitata

Ecological Hazards of Some Pesticides on Unicellular Freshwater Green Alga; Pseudokirchneriella subcapitata

Effect of Silver Nanoparticles on Growth of Eukaryotic Green Algae

The Effect of Salicylic Acid and Triacontanol on Biomass Production and Imidaclopirid Removal Capacity by Cyanobacteria

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