Evaluation of phytotoxicity and ecotoxicity potentials of a cyanobacterial extract containing microcystins under realistic environmental concentrations and in a soil–plant system

Corbel, Sylvain; Mougin, Christian; Martin-Laurent, Fabrice; Crouzet, Olivier; Bru, David; Nélieu, Sylvie; Bouaı̈cha, Noureddine

doi:10.1016/j.chemosphere.2015.02.008

Cited by 50 publications

(39 citation statements)

References 41 publications

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“…A recent study showed an increase in tomato seedling growth after 14 days of irrigation with environmental concentrations of this cyanobacterial extract comprised between 0.005 and 0.1 mg eq. MC-LR L -1 (Corbel et al 2015). As observed in this work, exposure to 0.005 mg eq.…”

Section: Effects Of Microcystins On Plant Growth Development and Physupporting

confidence: 55%

“…MC-LR g -1 cyanobacteria's cells dry weight. The cyanobacterial extract of M. aeruginosa (PCC 7820) was characterized, and the different congeners identified were described in Corbel et al (2015). The microcystins congener the most abundant in this extract was the MC-LR (68.4 % of the total microcystins).…”

Section: Quantification and Identification Of Microcystins In Cyanobamentioning

confidence: 99%

“…Microcystins concentrations in the extract were determined using the protein phosphatase type 2A inhibition assay according to Bouaïcha et al (2001). For confirming the identities of some microcystin-leucinearginine (MC-LR) variants in the cyanobacterial cells extract, the extract was analyzed by liquid chromatography coupled to tandem mass spectrometry (UPLC-MS/MS) using a Waters Acquity ultra-high-pressure liquid chromatography-electrospray-triple quadrupole system as described by Corbel et al (2015).…”

Section: Extraction and Identification Of Microcystin Variants Of Cyamentioning

confidence: 99%

“…The method of extraction was described by Corbel et al (2015). Briefly, freeze-dried cyanobacterial cells were homogenized with aqueous methanol and introduced for 3 min in an ultrasonic bath (Ultrasonic 300), followed by centrifugation at 3000g at 4°C for 10 min.…”

Section: Extraction and Identification Of Microcystin Variants Of Cyamentioning

confidence: 99%

“…We previously highlighted the modification of tomato seedlings growth during 14 days of soil irrigation (Corbel et al 2015) with water containing realistic environmental concentrations of microcystins. In the present study, we aim at determining the effects of a 90-day irrigation on tomato (Solanum lycopersicum cultivar MicroTom) plant growth, development and physiology.…”

Section: Introductionmentioning

confidence: 99%

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Soil irrigation with water and toxic cyanobacterial microcystins accelerates tomato development

et al. 2015

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Microcystins are cyclic heptapeptides hepatotoxins produced by aquatic cyanobacteria such as Microcystis aeruginosa. The wide occurrence of toxic microcystins in freshwater is a threat to water quality and health of living organisms. Here, we irrigated an agricultural soil daily with a cyanobacterial extract diluted at environmental concentrations of microcystin-leucine-arginine, from 0.005 to 0.1 mg equivalent MC-LR L -1 , for 90 days. We analyzed the impact on the growth and physiology of tomato, Solanum lycopersicum cultivar MicroTom. Our results show a stimulation of the tomato plant development, in terms of inflorescence and blooming, after exposure to the lowest concentration, of 0.005 mg eq. MC-LR L -1 , during the 40 first days postgermination. That effect was not apparently associated with physiological disturbances of the tomato plants.

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Section: Effects Of Microcystins On Plant Growth Development and Physupporting

confidence: 55%

Section: Quantification and Identification Of Microcystins In Cyanobamentioning

confidence: 99%

Section: Extraction and Identification Of Microcystin Variants Of Cyamentioning

confidence: 99%

Section: Extraction and Identification Of Microcystin Variants Of Cyamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Soil irrigation with water and toxic cyanobacterial microcystins accelerates tomato development

et al. 2015

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Soil irrigation with toxic cyanobacterial microcystins increases soil nitrification potential

et al. 2015

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Microcystins are cyclic heptapeptide hepatotoxins produced by aquatic cyanobacteria such as Microcystis aeruginosa. The wide occurrence of toxic microcystins in freshwater is a threat to the quality of water, agriculture, and human and animal health. There is actually little knowledge on the impact of microcystins on soil biomass. Here, an agricultural soil was daily irrigated with a cyanobacterial extract diluted at environmental concentrations of microcystin–leucine–arginine, from 0.005 to 0.1 mg equivalent MC-LR L−1, for 90 days. We measured soil enzymatic activities, nitrification potential activity of the soil microbial community, abundances of ammonia-oxidizing bacteria, and ammonia-oxidizing archaea amoA genes. Our results show an increase in potential nitrification for microcystin levels ranging between 0.005 and 0.02 mg eq. MC-LR L−1. Global enzymatic activities were unchanged. Abundances of total bacteria, archaea, and ammonia-oxidizing functional groups were not modified and could not explain the increase in nitrification

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Interactive effects of cadmium and Microcystis aeruginosa (cyanobacterium) on the growth, antioxidative responses and accumulation of cadmium and microcystins in rice seedlings

Kuang

Tie

et al. 2016

Ecotoxicology

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Cadmium pollution and harmful cyanobacterial blooms are two prominent environmental problems. The interactive effects of cadmium(II) and harmful cyanobacteria on rice seedlings remain unknown. In order to elucidate this issue, the interactive effects of cadmium(II) and Microcystis aeruginosa FACHB905 on the growth and antioxidant responses of rice seedling were investigated in this study, as well as the accumulation of cadmium(II) and microcystins. The results showed that the growth of rice seedlings was inhibited by cadmium(II) stress but promoted by inoculation of M. aeruginosa FACHB905. cadmium(II) stress induced oxidative damage on rice seedlings. Inoculation of M. aeruginosa FACHB905 alleviated the toxicity of cadmium(II) on rice seedlings. The accumulation of cadmium(II) in rice seedlings was decreased by M. aeruginosa FACHB905, but the translocation of cadmium(II) from root to shoot was increased by this cyanobacterium. The accumulation of microcystins in rice seedlings was decreased by cadmium(II). Results presented in this study indicated that cadmium(II) and M. aeruginosa had antagonistic toxicity on rice seedlings. The findings of this study throw new light on evaluation of ecological- and public health-risks for the co-contamination of cadmium(II) and harmful cyanobacteria.

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Evaluation of phytotoxicity and ecotoxicity potentials of a cyanobacterial extract containing microcystins under realistic environmental concentrations and in a soil–plant system

Cited by 50 publications

References 41 publications

Soil irrigation with water and toxic cyanobacterial microcystins accelerates tomato development

Soil irrigation with water and toxic cyanobacterial microcystins accelerates tomato development

Soil irrigation with toxic cyanobacterial microcystins increases soil nitrification potential

Interactive effects of cadmium and Microcystis aeruginosa (cyanobacterium) on the growth, antioxidative responses and accumulation of cadmium and microcystins in rice seedlings

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