The plastisphere in marine ecosystem hosts potential specific microbial degraders including Alcanivorax borkumensis as a key player for the low-density polyethylene degradation

Delacuvellerie, Alice; Cyriaque, Valentine; Gobert, Sylvie; Benali, Samira; Wattiez, Ruddy

doi:10.1016/j.jhazmat.2019.120899

Cited by 288 publications

(129 citation statements)

References 58 publications

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“…Nevertheless, it was intriguing to figure out whether the longchain PE (molecular weight > 2,000 Da) could be degraded by microorganisms from nature. A number of strains capable of degrading un-pretreated PE have been isolated from a variety of environments, including mulch films, marine water, soil contaminated by crude oil, sewage sludge, and landfills ( Table 2; Orr et al, 2004;Sivan et al, 2006;Sudhakar et al, 2008;Balasubramanian et al, 2010;Yoon et al, 2012;Tribedi and Sil, 2013;Harshvardhan and Jha, 2013;Yang et al, 2014;Azeko et al, 2015;Kowalczyk et al, 2016;Paço et al, 2017;Sarmah and Rout, 2018;Delacuvellerie et al, 2019). Some of these strains showed the ability to utilize un-pretreated PE as a carbon source based on the characterizations of biofilm formation on PE films, weight loss of PE materials, surface deterioration, and changes in the mechanical and thermal properties of PE ( Table 2).…”

Section: Pementioning

confidence: 99%

Microbial Degradation and Valorization of Plastic Wastes

2020

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Section: Pementioning

confidence: 99%

Microbial Degradation and Valorization of Plastic Wastes

2020

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“…However, most Rhodococcus species, if not all, fail to induce a clear-cut degradation of PE samples [82]. A number of recent papers have identified, isolated, and chararcterized PE degradation by marine bacteria [83,84], including Alcanivorax borkumensis [85]. The great variation in results of PE degradation experiments reflects the great diversity of microorganisms used.…”

Section: Type Of Microorganisms Usedmentioning

confidence: 99%

Challenges with Verifying Microbial Degradation of Polyethylene

2020

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Polyethylene (PE) is the most abundant synthetic, petroleum-based plastic materials produced globally, and one of the most resistant to biodegradation, resulting in massive accumulation in the environment. Although the microbial degradation of polyethylene has been reported, complete biodegradation of polyethylene has not been achieved, and rapid degradation of polyethylene under ambient conditions in the environment is still not feasible. Experiments reported in the literature suffer from a number of limitations, and conclusive evidence for the complete biodegradation of polyethylene by microorganisms has been elusive. These limitations include the lack of a working definition for the biodegradation of polyethylene that can lead to testable hypotheses, a non-uniform description of experimental conditions used, and variations in the type(s) of polyethylene used, leading to a profound limitation in our understanding of the processes and mechanisms involved in the microbial degradation of polyethylene. The objective of this review is to outline the challenges in polyethylene degradation experiments and clarify the parameters required to achieve polyethylene biodegradation. This review emphasizes the necessity of developing a biochemically-based definition for the biodegradation of polyethylene (and other synthetic plastics) to simplify the comparison of results of experiments focused for the microbial degradation of polyethylene.

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“…The current knowledge of plastic-related marine biofilms in terms of community assembly processes could be improved by future research exploring plastic-microbial interactions at an increased spatial resolution. Since the plastisphere in marine environments has been shown to host specific potential microbial degraders [89], biofilm communities on plastic polymers could represent targets for future discovery of novel plastic-degrading microbes and the genes involved in this enzymatic process.…”

Section: Plastic Polymersmentioning

confidence: 99%

Microbial Colonization in Marine Environments: Overview of Current Knowledge and Emerging Research Topics

Caruso¹

2020

JMSE

125

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Microbial biofilms are biological structures composed of surface-attached microbial communities embedded in an extracellular polymeric matrix. In aquatic environments, the microbial colonization of submerged surfaces is a complex process involving several factors, related to both environmental conditions and to the physical-chemical nature of the substrates. Several studies have addressed this issue; however, more research is still needed on microbial biofilms in marine ecosystems. After a brief report on environmental drivers of biofilm formation, this study reviews current knowledge of microbial community attached to artificial substrates, as obtained by experiments performed on several material types deployed in temperate and extreme polar marine ecosystems. Depending on the substrate, different microbial communities were found, sometimes highlighting the occurrence of species-specificity. Future research challenges and concluding remarks are also considered. Emphasis is given to future perspectives in biofilm studies and their potential applications, related to biofouling prevention (such as cell-to-cell communication by quorum sensing or improved knowledge of drivers/signals affecting biological settlement) as well as to the potential use of microbial biofilms as sentinels of environmental changes and new candidates for bioremediation purposes.

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The plastisphere in marine ecosystem hosts potential specific microbial degraders including Alcanivorax borkumensis as a key player for the low-density polyethylene degradation

Cited by 288 publications

References 58 publications

Microbial Degradation and Valorization of Plastic Wastes

Microbial Degradation and Valorization of Plastic Wastes

Challenges with Verifying Microbial Degradation of Polyethylene

Microbial Colonization in Marine Environments: Overview of Current Knowledge and Emerging Research Topics

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