Response of mangrove propagules to the presence of oil and hydrocarbon degrading bacteria during an experimental oil spill

Chequer, Luciana Pereira Torres; Bitencourt, José Augusto Pires; Waite, Carolina Coelho da Costa; Santos, Elisamara Sabadini; Franco, Diego Castillo; Alves, Rogério Camargo Pinheiro; Crapez, Mírian Araújo Carlos

doi:10.3856/vol45-issue4-fulltext-17

Cited by 11 publications

(9 citation statements)

References 42 publications

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“…Chequer et al [ 44 ] observed the same pattern in the esterases and dehydrogenases enzyme activities on impacted soil by diesel oil, maintaining the number of cells in sediments. The same activity pattern was also observed in sediments from Guanabara Bay, Brazil, due to contamination by Cu, Zn and Pb [ 45 , 52 ].…”

Section: Discussionmentioning

confidence: 81%

“…Several studies have used dehydrogenase activity as a marker of toxicity of petroleum hydrocarbons, pesticides, and metals to soil and sediment bacteria [ 5 , 44 – 51 ]. In our study, the parameters of esterases and dehydrogenases activities demonstrated, respectively, a pattern for the hydrolysis of biopolymers and intracellular supply with compounds <600 Da [ 32 ] for energy production, sufficient to maintain the number of cells.…”

Section: Discussionmentioning

confidence: 99%

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Potential application of Pseudomonas stutzeri W228 for removal of copper and lead from marine environments

et al. 2020

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High concentrations of metals in the environment alter bacterial diversity, selecting resistant and tolerant species. The study evaluated the selection of a potential bacterial strain from Sepetiba Bay-Rio de Janeiro, Brazil marine sediments to remove Cu and Pb. The bacterial strain isolated from the sediments was used in three different bioassays: (1) Cu at concentrations of 0 (control), 6 and 50 μg.mL -1 ; (2) Pb at concentrations of 0 (control), 6 and 50 μg.mL -1 ; (3) Cu + Pb in concentrations of 3 μg.mL -1 Cu + 3 μg.mL -1 Pb (6 μg.mL -1 ) and 25 μg.mL -1 Cu + 25 μg.mL -1 Pb (50 μg.mL -1 ). The number of cells and the enzymatic activities of dehydrogenases and esterases were quantified. Results of taxonomic identification indicated the selection of the Pseudomonas stutzeri W228 strain, showing a greater degree of similarity (±73%) with the database used. There was no significant variation in the number of cells, 10 8 cells.mL -1 , which represents a high biomass production in the presence of stressors. However, we observed a reduction in dehydrogenase activity at all tested concentrations of Cu, Pb and Cu + Pb. The activity of esterase increased, indicating a higher energy demand to complete the bacterial life cycle. The study showed significant results for the absorption of Pb by the extracellular polymeric substances (EPS) and the efflux of Cu. The capacity of Pb absorption by EPS can be considered a resistance mechanism, as well as the efflux of Cu, so that the available EPS sites could be occupied by the most toxic ions demonstrating that Pseudomonas stutzeri is resistant to Pb and Cu.

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Section: Discussionmentioning

confidence: 81%

Section: Discussionmentioning

confidence: 99%

Potential application of Pseudomonas stutzeri W228 for removal of copper and lead from marine environments

et al. 2020

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“…The abundances of most of the dominant diesel-oil-degrading bacteria increased after the immobilization on MAC, such as Pseudomonas, Bacillus, Microbacterium, Staphylococcus, Luteimonas and Caulobacter. For instance, the Brevundimonas was demonstrated to be a main degrading bacteria of diesel oil [29], and its abundance increased from 53.67 to 58.34% after immobilization. Pseudomonas, Bacillus, Rhodococcus and Microbacterium all have petroleum hydrocarbon degradation capability [30], the abundance levels of which increased by 9.07% compared to the free culture condition.…”

Section: Changes In Community Structures Of Degrading Bacteria After ...mentioning

confidence: 99%

Preparation of Micron-Scale Activated Carbon-Immobilized Bacteria for the Adsorption–Biodegradation of Diesel Oil

Zhang

Kong

Han

et al. 2022

Water

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This paper investigated the micron-scale activated carbon (MAC) immobilized diesel-oil-degrading bacteria (bio-MAC) used as remediation materials for the removal of diesel-oil-contaminated water. The high-efficiency indigenous diesel-oil-degrading bacteria were firstly screened and enriched, then the MAC was used as a diesel oil sorbent and biocarrier for the immobilization of degrading bacteria to prepare the bio-MAC material. The removal performance of the bio-MAC was evaluated via a comparison with the freely degrading bacteria and MAC. The SEM results demonstrated that the diesel-oil-degrading bacteria were effectively immobilized and grew well on the surfaces of MAC particles. The concentration of MAC significantly influenced the growth and activity (DHA and LPS) of immobilized bacteria, and the MAC addition of 3.0 g/L was proven to be an optimum amount for the preparation of bio-MAC. The high-throughput sequencing analysis further indicated that the bacteria immobilized on MAC showed higher abundance levels and diversities index values compared to freely suspended bacteria, such as Pseudomonas, Rhodococcus, Bacillus and Microbacterium. The FTIR spectroscopy results showed that the bio-MAC could effectively degrade the aliphatic hydrocarbons, alkenes and aromatic compounds of diesel oil to carboxylic acids, esters, alcohols and other metabolites. When the concentration of diesel oil was 1 g/L, the removal efficiency for the diesel oil of bio-MAC reached 86.35% after 15 days, while only 23.82% and 70.97% of the diesel oil was removed using the same amount of free bacteria and MAC, respectively. The prepared bio-MAC showed a synergic effect of adsorption and biodegradation and efficiently removed diesel oil from wastewater.

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“…The impact of oil on coastal environments depends on the amount of spillage, the type of oil and its toxicity, and environmental conditions such as the predominant type of sediments, tidal circulation and prevailing climatic conditions at the time of contact with the oil (Soares et al 2006;Chequer et al 2017). Acute and chronic effects result from impacts of different types of oil in mangrove ecosystems (Hoff and Michel 2014).…”

Section: Introductionmentioning

confidence: 99%

“…It is in this highly vulnerable phase of the plant that the presence of tensors in the water can affect germination. Oil contamination can harm the germination process, as well as the growth, development and establishment of mangrove seedlings (Duke et al 1998;Chindah et al 2011;Hoff and Michel 2014;Chequer et al 2017).…”

Section: Introductionmentioning

confidence: 99%

Effects of automotive diesel oil on germination of Avicennia germinans and Laguncularia racemosa mangrove propagules

MARTINS,

MOCHEL,

ZANANDREA

et al. 2023

Acta Amaz.

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Mangrove ecosystems are sensitive to oil, as spills can impair developmental processes of mangrove vegetation. Since the 2010s, the Brazilian equatorial margin, more specifically the Pará-Maranhão Basin and the mouth of the Amazonas River, has been affected by oil runoff from urban activities and the increased risk from exploratory deepwater drilling for oil extraction. Dispersal of mangrove propagules occurs during the tidal cycles, when the presence of tensors in the water can affect germination. We analyzed the effects of diesel oil on the germination of propagules of the two most common mangrove species in the region, Laguncularia racemosa and Avicennia germinans, in six treatments of diesel oil in the water (0.5%, 1%, 1.5%, 2%, 3% and 4%) and a diesel-free control. The response variables were germinability (G%), mean germination time, mean germination speed and the germination speed index (GSI). G% and GSI in L. racemosa propagules differed significantly between the control and all treatments (G% and GSI < 10% in the 3% treatment). Propagules of A. germinans were more resistant, and the physiological variables did not differ significantly among treatments and control (G% > 90% in all treatments). Our results indicate that, at the germination stage, L. racemosa was more susceptible than A. germinans to contamination by automotive diesel oil.

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Response of mangrove propagules to the presence of oil and hydrocarbon degrading bacteria during an experimental oil spill

Cited by 11 publications

References 42 publications

Potential application of Pseudomonas stutzeri W228 for removal of copper and lead from marine environments

Potential application of Pseudomonas stutzeri W228 for removal of copper and lead from marine environments

Preparation of Micron-Scale Activated Carbon-Immobilized Bacteria for the Adsorption–Biodegradation of Diesel Oil

Effects of automotive diesel oil on germination of Avicennia germinans and Laguncularia racemosa mangrove propagules

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