Enhancement of pyrene degradation efficacy of <i>Synechocystis</i> sp., by construction of an artificial microalgal-bacterial consortium

SummaryMicrobes are ubiquitously distributed, and they are also present in algae production systems. The algal microbiome is a pivotal part of the alga holobiont and has a key role in modulating algal populations in nature. However, there is a lack of knowledge on the role of bacteria in artificial systems ranging from laboratory flasks to industrial ponds. Coexisting microorganisms, and predominantly bacteria, are often regarded as contaminants in algal research, but recent studies manifested that many algal symbionts not only promote algal growth but also offer advantages in downstream processing. Because of the high expectations for microalgae in a bio‐based economy, better understanding of benefits and risks of algal–microbial associations is important for the algae industry. Reducing production cost may be through applying specific bacteria to enhance algae growth at large scale as well as through preventing the growth of a broad spectrum of algal pathogens. In this review, we highlight the latest studies of algae–microbial interactions and their underlying mechanisms, discuss advantages of large‐scale algal–bacterial cocultivation and extend such knowledge to a broad range of biotechnological applications.

show abstract

“…and Bacillus sp.). The combination increased both algal growth and degradation of the polycyclic aromatic hydrocarbon (Patel et al ., ).…”

Section: Algae–bacteria‐based Wastewater Treatmentmentioning

confidence: 97%

“…and Bacillus sp.). The combination increased both algal growth and degradation of the polycyclic aromatic hydrocarbon (Patel et al, 2015). Given the abovementioned advantages, integration of algae and bacteria has a large potential for wastewater treatment, especially under aerobic conditions.…”

Section: Removal Of Heavy Metals and Toxic Organic Compoundsmentioning

confidence: 99%

The effect of the algal microbiome on industrial production of microalgae

Lian

Wijffels

Smidt

et al. 2018

Microbial Biotechnology

121

View full text Add to dashboard Cite

show abstract

“…B. licheniformis isolated from petroleum contaminated soil in a previous study ( Nzila et al, 2019 ) was used to test its compatibility with G. pectorale . For reviving bacterial cultures, a loop-full of bacteria from stock plates were transferred to nutrient broth and grown overnight at 37°C in a rotary shaker ( Patel et al, 2015 ; Kahla et al, 2021 ).…”

Section: Methodsmentioning

confidence: 99%

Enhanced biodegradation of phenanthrene and anthracene using a microalgal-bacterial consortium

Hoque,

Alqahtani,

Sankaran

et al. 2023

Front. Microbiol.

View full text Add to dashboard Cite

Polycyclic aromatic hydrocarbons (PAHs) are chemicals that are released into the environment during activities of the petroleum industry. The bioaccumulation, carcinogenic and mutagenic potential of PAHs necessitates the bioremediation of these contaminants. However, bioremediation of PAHs has a number of limitations including the inability of a single microbe to degrade all of the PAH fraction’s environmental constituents. Therefore, a different paradigm, employing microalgal-bacterial consortium (MBC), may be used to effectively remove PAHs contaminants. In this type of interaction, the microalgae and bacteria species in the consortium work together in a way that enhances the overall performance of the MBC. Bacterial species in the consortium provide essential nutrients or growth factors by degrading toxic substances and provide these to microalgae, while the microalgae species provide organic carbon for the bacterial species to grow. For the first time, the ability of Gonium pectorale (G. pectorale) microalgae to break down phenanthrene (PHE) and anthracene (ANT) was investigated. Phenanthrene was shown to be more effectively degraded by G. pectorale (98%) as compared to Bacillus licheniformis (B. licheniformis) 19%. Similarly, G. pectorale has effectively degrade anthracene (98%) as compared with B. licheniformis (45%). The consortia of G. pectorale and B. licheniformis has shown a slight increase in the degradation of PHE (96%) and ANT (99%). Our findings show that B. licheniformis did not inhibit the growth of G. pectorale and in the consortia has effectively eliminated the PAHs from the media. Therefore G. pectorale has a tremendous potential to remove PAHs from the polluted environment. Future research will be conducted to assess Gonium’s capacity to eliminate PAHs that exhibit high molar masses than that of PHE and ANT.

show abstract

“…individually was able to reduce a maximum of 36% (at 1.5 mg/L) PYR that was significantly enhanced to 94.1% PYR at 50 mg/L in the consortium. These results clearly shows that in the presence of the aerobic heterotrophic bacteria, microalgae can grow better and providing essential organics for effective degradation of PYR from the contaminated environment [116]. In another study pyrene degradation was determined by constructing a consortium of PAH degrading microalga (Selenastrum capricornutum) and bacterium (Mycobacterium sp.…”

Section: Microalgae Bacteria Consortia For the Degradation Of Pahsmentioning

confidence: 90%

Microalgae–Bacteria Consortia: A Review on the Degradation of Polycyclic Aromatic Hydrocarbons (PAHs)

Ahmad

2021

Arab J Sci Eng

View full text Add to dashboard Cite

Polycyclic aromatic hydrocarbons (PAHs) are considered as import contaminants portraying diverse ecological and public health apprehension due to their properties such as water solubility, toxicity, bioaccumulation potential and recalcitrant nature. Due to their contrary impact on the human wellbeing and other organisms in the biosphere, research is in progress to remove PAHs from the environment. Several physicochemical methods can be used for the removal of PAHs; however, its bioremediation using microorganisms is a benign and ecofriendly approach. Various strains of bacteria and microalgae are capable to potentially degrade or transform PAHs through their indigenous metabolic pathways. However, their biodegradability potential hindered by the cytotoxic effect of petroleum hydrocarbons, unfavorable environmental conditions, metabolic constrains, hydrocarbon composition, concentration, type and number of microorganisms. During the last decade, different microalgae species have been reported capable of biodegrading PAHs. Moreover, the interaction between microalgae and bacteria PAH metabolic pathways overcomes some rate limiting step(s) observed in single species. Thus, an alternative paradigm "Microalgae-Bacteria Consortia" is emerging as a new strategy to be adopted for the efficient detoxification and removal of the PAH pollutants. This review article aimed to provide an update of the current knowledge on the toxic effects of PAHs in various organisms as well as the symbiotic interactions between different bacteria and microalgae species in the degradation/transformation of PAHs. In addition, environmental factors are highlighted to elucidate how PAHs influence the growth of microalgae within a symbiotic framework with bacteria counterpart. The ultimate outcome of this paper can be beneficial to expedite the progress of new research into the bioremediation of PAHs from the contaminated environments.

show abstract

Enhancement of pyrene degradation efficacy of Synechocystis sp., by construction of an artificial microalgal-bacterial consortium

Cited by 16 publications

References 27 publications

The effect of the algal microbiome on industrial production of microalgae

The effect of the algal microbiome on industrial production of microalgae

Enhanced biodegradation of phenanthrene and anthracene using a microalgal-bacterial consortium

Microalgae–Bacteria Consortia: A Review on the Degradation of Polycyclic Aromatic Hydrocarbons (PAHs)

Contact Info

Product

Resources

About