Pollutants affect algae-bacteria interactions: A critical review

You, Xiuqi; Xu, Nan; Yang, Xi; Sun, Weiling

doi:10.1016/j.envpol.2021.116723

Cited by 97 publications

(24 citation statements)

References 138 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The results showed that with the increase of the proportion of bacteria, Cd was mainly absorbed by the consortia (Table 3). Comparing to the algal cells in a pristine environment, much denser colonization of bacteria was observed on the algal cells grown in polluted water [40]. Therefore, under Cd treatment, the symbionts with a high proportion of bacteria were more likely to agglomerate, which could reduce the specific surface area of symbionts and decrease their adsorption of heavy metals [43].…”

Section: Discussionmentioning

confidence: 99%

“…Similarly, Xu et al [39] also showed that the presence of symbiotic bacteria can reduce the stress of As(III) to Chlorella salina due to the bacteria's promotion of microalgae extracellular polymers. On the contrary, the presence of pollutants can interfere with algal-bacterial interaction [40]. Under Cd treatment, more B. subtilis cells were closely attached to C. salina (Figure 2d), indicating that more binding sites were available for Cd immobilization to reduce the toxicity of Cd to algae [39,40].…”

Section: Discussionmentioning

confidence: 99%

“…On the contrary, the presence of pollutants can interfere with algal-bacterial interaction [40]. Under Cd treatment, more B. subtilis cells were closely attached to C. salina (Figure 2d), indicating that more binding sites were available for Cd immobilization to reduce the toxicity of Cd to algae [39,40].…”

Section: Discussionmentioning

confidence: 99%

“…Our results also showed that only in the high ratio (1:4) of consortia, the content of extracellular polysaccharides was higher than other ratios. Such phenomena were possibly linked to signal transduction between algae and bacteria, which could modify their behaviors and growth such as biofilm formation and EPS secretion, when the bacterial cell density reached a certain threshold [40,49].…”

Section: Discussionmentioning

confidence: 99%

See 3 more Smart Citations

Effects of algal–bacterial ratio on the growth and cadmium accumulation of Chlorella salina–Bacillus subtilis consortia

et al. 2021

J Basic Microbiol

View full text Add to dashboard Cite

Algae-bacteria consortia have been proven effective in the removal of metal pollutants, but the effects of algal-bacterial ratio in the metal accumulation and resistance by this symbiotic system have not been systematically investigated. In this study, we set up consortia with various ratios of Chlorella salina-Bacillus subtilis, determined their growth, Cd accumulation, levels of intracellular glutathione (GSH), extracellular polysaccharide, phosphorus (P) in the culture medium, and functional groups of consortia after Cd treatments (0.1, 0.5, 1 mg L −1 ) for 7 days. With the addition of B. subtilis in the C. salina culture, the dry weight and specific growth rate of the consortia significantly increased compared with C. salina alone, reaching 68.33 mg and 0.382 (mg L −1 ) d −1 respectively at the 1:4 algal-bacterial ratio with 1 mg L −1 Cd treatment. Maximum Cd removal (51.66%) was also observed upon the same Cd exposure and algal-bacterial ratio. Cadmium was mostly taken up into cells at 1 mg L −1 Cd whereas its adsorption dominated the accumulation when Cd was 0.1 and 0.5 mg L −1 . The amounts of extracellular polysaccharides, GSH, and P of the symbiotic system were also increased by the bacterial addition. Besides, Fouriertransform infrared (FTIR) spectroscopy analysis showed that functional groups like N-H, O-H, and P-O-C were involved in the Cd complexation. Taken together, a higher bacterial ratio promoted the Cd accumulation and detoxification by the C. salina-B. subtilis consortia through intra-and extracellular processes. K E Y W O R D S accumulation, algae-bacteria consortia, cadmium, detoxification 1 | INTRODUCTION Cadmium (Cd) is a toxic heavy metal and has been considered as a human carcinogen by the US Department of Health and Human Services [1]. It causes severe consequences in human health such as pathological changes in the liver, kidney, and other organs, neuralgia, osteoporosis, bone pain, and severe bone deformity [2,3]. Recently, Cd bioremediation has been extensively investigated due to its advantages such as cost-effectiveness

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Effects of algal–bacterial ratio on the growth and cadmium accumulation of Chlorella salina–Bacillus subtilis consortia

et al. 2021

J Basic Microbiol

View full text Add to dashboard Cite

show abstract

“…Any effects on their relationship can generate great impacts on the host and cause severe environmental damage 8,9 . Despite the growing awareness of the critical roles of gut microbiota in aquatic ecosystems, the toxicological relevance of gut microbiota for the host has been rarely studied 10,11 , especially regarding the effects of antibacterial chemicals. Previous studies reported that AgNPs could have a more severe damage on the cell membrane compared with Ag + due to its strong adhesion onto cell membrane while releasing Ag + 12 .…”

Section: Introductionmentioning

confidence: 99%

Gut-microbial adaptation and transformation of silver nanoparticles mediated the detoxification of Daphnia magna and their offspring

Liu

Wang

2022

Environ. Sci.: Nano

View full text Add to dashboard Cite

show abstract

Cultivation of algal‐bacterial granular sludge and degradation characteristics of tetracycline

Wang

Zhang

et al. 2023

Water Environment Research

View full text Add to dashboard Cite

Due to the increasing use of antibiotics, tetracycline was frequently detected in wastewater. As a novel technology, algal‐bacterial granular sludge process is expected to be widely used in wastewater treatment. However, the degradation effect of tetracycline by algal‐bacterial granular sludge process and its degradation path is still unknown. In this study, mature and stable algal‐bacterial granular sludge was cultured and the degradation of tetracycline by it was investigated. The results showed that the removal amount of 1–25 mg/L tetracycline by algal‐bacterial granular sludge was 0.09–1.45 mg/g volatile suspended solids (VSS), in which the adsorption amount was 0.06–0.17 mg/g VSS and the degradation amount was 0.03–1.27 mg/g VSS. Tetracycline biosorption was dominant at its concentration of 1–3 mg/L, while biodegradation was predominant at 5–25 mg/L of tetracycline. At tetracycline concentration of 3–5 mg/L, the contribution of biosorption and biodegradation to tetracycline removal by algal‐bacterial granular sludge process was almost equal. Algal‐bacterial granular sludge could effectively degrade tetracycline through demethylation, dehydrogenation, deacylation, and deamination or their combination. In addition, the degradation products were nontoxic and hardly pose a threat to environmental health. The research results of this paper provide a solid theoretical basis for tetracycline removal by algal‐bacterial granular sludge and a reference for the development of algal‐bacterial granular sludge process for wastewater treatment in the presence of tetracycline. Practitioner points Mature and stable algal‐bacterial granular sludge was cultured. Tetracycline was removed by algal‐bacterial granular sludge through biosorption and biodegradation. Algal‐bacterial granular sludge could degrade tetracycline through demethylation, dehydrogenation, deacylation, and deamination or their combination. The degradation products were nontoxic.

show abstract

Pollutants affect algae-bacteria interactions: A critical review

Cited by 97 publications

References 138 publications

Effects of algal–bacterial ratio on the growth and cadmium accumulation of Chlorella salina–Bacillus subtilis consortia

Effects of algal–bacterial ratio on the growth and cadmium accumulation of Chlorella salina–Bacillus subtilis consortia

Gut-microbial adaptation and transformation of silver nanoparticles mediated the detoxification of Daphnia magna and their offspring

Cultivation of algal‐bacterial granular sludge and degradation characteristics of tetracycline

Contact Info

Product

Resources

About