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Microbial Bioremediation of Petroleum Hydrocarbons in Moderate to Extreme Environments and Application of “omics” Techniques to Evaluate Bioremediation Approaches and Efficiency
Published in Gunjan Mukherjee, Sunny Dhiman, Waste Management, 2023
Maricy Raquel Lindenbah Bonfá, Rodrigo Matheus Pereira, Francine Amaral Piubeli, Lucia Regina Durrant
Marinobacter has adapted well to environments contaminated with copper, in addition to growing well in mangroves contaminated by hydrocarbons (Torres et al. 2019). This genus of bacteria is part of the order of Alteromonadales which are known to contain hydrocarbon degraders (Dos Santos et al. 2011, Dombrowski et al. 2016).
The primary molecular influences of marine plastisphere formation and function: Novel insights into organism -organism and -co-pollutant interactions
Published in Critical Reviews in Environmental Science and Technology, 2023
Charlotte E. Lee, Lauren F. Messer, Sophie I. Holland, Tony Gutierrez, Richard S. Quilliam, Sabine Matallana-Surget
In the plastisphere, one of the dominant prokaryotic classes, Gammaproteobacteria is represented by species of Alteromonadales, Pseudomonadales, Vibrionales, and Oceanospirillales (Delacuvellerie et al., 2019; Dussud et al., 2018; Wright et al., 2021). All Gammaproteobacteria are Gram-negative, meaning they express LPS, facilitating their attachment to plastic (Chao & Zhang, 2011), while Pseudomonadales and Vibrionales also express type IV pili (Tfp), which can anchor them to the debris (Figure 2.2; Pelicic, 2019). The Gram-negative Planctomycetes and Cyanobacteria, mixed-Gram Firmicutes, and Gram-positive Actinobacteria also bind frequently, which in the case of Actinobacteria, may be due to the production of sprawling filamentous structures specifically for substrate binding (Figure 1; Pelicic, 2019). Despite being less abundant than Proteobacteria and Bacteroidetes, these are some of the most active microorganisms in the plastisphere, particularly Cyanobacteria (Delacuvellerie et al., 2022; Oberbeckmann et al., 2021), which secrete EPS for protection and microbial aggregation (Figure 2.2; Lagarde et al., 2016; Scherwass et al., 2016; Schlundt et al., 2020). Arthropods, sponges, cnidaria, nematodes, and a range of protists, also significantly contribute to plastisphere diversity (Bryant et al., 2016; Kirstein et al., 2018; Zettler et al., 2013). However, it is not known how many present eukaryotes, such as the protozoan Radiolaria, bind to plastic (Zettler et al., 2013). Archaea and fungi are also rarely observed (Amaral-Zettler et al., 2021; Latva et al., 2022; Woodall et al., 2018) considering their ability to bind to substrates using archaella and hyphae (Bryant et al., 2016; Kirstein et al., 2018; Pelicic, 2019). Cell morphology therefore seems to play a lesser role in plastisphere adhesion for eukaryotes and archaea compared to bacteria. It is important to note that bacteria are generally primary colonizers, while eukaryotes and archaea are secondary colonizers (Bryant et al., 2016; Pollet et al., 2018). It is therefore likely that cell structure, alongside location, impacts the constitution of the early prokaryotic plastisphere more than the developed plastisphere.