Physiological and biochemical responses of Microcystis aeruginosa to glyphosate and its Roundup® formulation

Qiu, Huimin; Geng, Jinju; Ren, Hongqiang; Xia, Xiaomeng; Wang, Xiaorong; Yu, Yang

doi:10.1016/j.jhazmat.2012.12.033

Cited by 64 publications

(42 citation statements)

References 31 publications

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“…With the decrease of test concentration, the effect of amoxicillin on the growth of M. aeruginosa turned into stimulation in this study. This result was in accordance with two previous studies in which pentachlorophenol [26] and a glyphosate pesticide [27] were found to stimulate the growth of M. aeruginosa at environmentally relevant concentrations while inhibit algal growth at elevated test concentrations. Wang et al [28] investigated the relationship between nonylphenol (NP) stress and the growth of M. aeruginosa and observed stimulated algal growth as a hormesis effect of NP at low test concentration.…”

Section: Discussionsupporting

confidence: 93%

Hormesis Effects of Amoxicillin on Growth and Cellular Biosynthesis of Microcystis aeruginosa at Different Nitrogen Levels

et al. 2014

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Coexisting antibiotic contaminants have potential to regulate cyanobacterial bloom, and the regulation is likely affected by nitrogen supply. A typical cyanobaterium Microcystis aeruginosa was cultured with 0.05-50 mg L(-1) of nitrogen and exposed to 100-600 ng L(-1) of amoxicillin for 7 days. Algal growth was not significantly (p > 0.05) affected by amoxicillin at the lowest nitrogen level of 0.05 mg L(-1), stimulated by 600 ng L(-1) of amoxicillin at a moderate nitrogen level of 0.5 mg L(-1) and enhanced by 100-600 ng L(-1) of amoxicillin at higher nitrogen levels of 5-50 mg L(-1). Amoxicillin affected chlorophyll-a, psbA gene, and rbcL gene in a similar manner as algal growth, suggesting a regulation of algal growth via the photosynthesis system. At each nitrogen level, synthesis of protein and polysaccharides as well as production and release of microcystins (MCs) increased in response to environmental stress caused by amoxicillin. Expression of ntcA and mcyB showed a positive correlation with the total content of MCs under exposure to amoxicillin at nitrogen levels of 0.05-50 mg L(-1). Nitrogen and amoxicillin significantly (p < 0.05) interact with each other on the regulation of algal growth, synthesis of chlorophyll-a, production and release of MCs, and expression of ntcA and mcyB. The nitrogen-dependent stimulation effect of coexisting amoxicillin contaminant on M. aeruginosa bloom should be fully considered during the combined pollution control of M. aeruginosa and amoxicillin.

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Section: Discussionsupporting

confidence: 93%

Hormesis Effects of Amoxicillin on Growth and Cellular Biosynthesis of Microcystis aeruginosa at Different Nitrogen Levels

et al. 2014

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“…With the increased use of glyphosate-based herbicides, the occurrence of glyphosate and its metabolite AMPA derived from intensive agriculture triggers great attention being paid on the risks of glyphosate in environment (Qiu et al, 2013;Zaller et al, 2014). In highly erodible land, together with runoff and suspended load, glyphosate and AMPA, supposedly, are transported, deposited, and probably accumulated in nearby areas (Ulén et al, 2014).…”

Section: Discussionmentioning

confidence: 99%

Short-term transport of glyphosate with erosion in Chinese loess soil — A flume experiment

Yang

Wang

Bento

et al. 2015

Science of The Total Environment

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“…The inhibition rate continues to increase rapidly from 1.52% to 27.31% in the first four days, and slowly declines to 11.46% at the 9th day and then remains stable. The results indicated that the inhibitory effect of H. reticulatum growing water on the growth of C. pyrenoidosa was different with the concentration of growing water, and the "Hormesis effect" was patently observed [43]. Among the experimental groups, the growth of C. pyrenoidosa was slightly promoted at 20% of H. reticulatum growing water, but severely inhibited at the 80% experimental group.…”

Section: The Allelopathy Inhibitory Effects Of Hydrodictyon Reticulatmentioning

confidence: 91%

Allelopathy Inhibitory Effects of Hydrodictyon reticulatum on Chlorella pyrenoidosa under Co-Culture and Liquor-Cultured Conditions

Chen

Huang

et al. 2017

Water

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Eutrophication has become increasingly serious in recent years, which severely impairs the aquatic ecosystem. Applying environmentally-friendly methods to effectively control the growth of algae and avoid eutrophication has been proved to be a promising way. Thus, the potential of Hydrodictyon reticulatum on eutrophication control was studied in this research. The allelopathy inhibitory effects of H. reticulatum on the growth of Chlorella pyrenoidosa were investigated under both co-culture and liquor-cultured conditions. The biomass and chlorophyll a content of C. pyrenoidosa were determined with time during the experimental period. Nitrogen and phosphorus removal capacities of H. reticulatum were also examined. Results showed that the growth of C. pyrenoidosa was obviously inhibited under both co-culture and liquor-cultured conditions, and the "Hormesis effect" was patently observed. The strength of allelopathy inhibitory effect depended on the relative biomass between H. reticulatum and C. pyrenoidosa. The allelopathy inhibitory effect of H. reticulatum on C. pyrenoidosa under co-culture condition was stronger than that under liquor-cultured condition. The decrease speeds of nitrogen and phosphorus concentrations were in direct proportion to the concentration of H. reticulatum.

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Physiological and biochemical responses of Microcystis aeruginosa to glyphosate and its Roundup® formulation

Cited by 64 publications

References 31 publications

Hormesis Effects of Amoxicillin on Growth and Cellular Biosynthesis of Microcystis aeruginosa at Different Nitrogen Levels

Hormesis Effects of Amoxicillin on Growth and Cellular Biosynthesis of Microcystis aeruginosa at Different Nitrogen Levels

Short-term transport of glyphosate with erosion in Chinese loess soil — A flume experiment

Allelopathy Inhibitory Effects of Hydrodictyon reticulatum on Chlorella pyrenoidosa under Co-Culture and Liquor-Cultured Conditions

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