Development of Rhizophora mangle (Rhizophoraceae) and Avicennia schaueriana (Avicenniaceae) in the presence of a hydrocarbon-degrading bacterial consortium and marine diesel oil

The development of Rhizophora mangle and Avicennia schaueriana seedlings impacted by marine diesel oil (MDO) was evaluated in the presence or absence of a hydrocarbon-degrading bacterial consortium (HBC). The bioassays were conducted in a greenhouse during 6 months and consisted of three different t...

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Bibliographic Details
Published in:3 Biotech 2022-08, Vol.12 (8), p.157-157, Article 157
Main Authors: Chequer, Luciana P. T., Bitencourt, José Augusto P., Waite, Carolina C. C., da Silva, Guilherme Oliveira A., da Costa Pereira, Daniella, Crapez, Mirian A. C.
Format: Article
Language:English
Subjects:
Agriculture
Avicennia schaueriana
Bacteria
Bioinformatics
Biomaterials
Biotechnology
Cancer Research
Chemistry
Chemistry and Materials Science
Consortia
Degradation
Diesel
Enzymatic activity
Extracellular polymers
Hydrocarbons
Oil
Original
Original Article
Rhizophora mangle
Sediments
Seedlings
Stem Cells
Survival
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Summary:The development of Rhizophora mangle and Avicennia schaueriana seedlings impacted by marine diesel oil (MDO) was evaluated in the presence or absence of a hydrocarbon-degrading bacterial consortium (HBC). The bioassays were conducted in a greenhouse during 6 months and consisted of three different treatments (control, MDO only and MDO + HBC). The bacterial consortium was mainly composed of Bacillus spp. (73%), but Rhizobium spp., Pseudomonas spp., Ochrobactrum spp., and Brevundimonas spp. were also present. After 6 months, A . schaueriana seedlings showed higher mortality compared to those of R. mangle ; R. mangle exhibited 68% (control), 44% (MDO alone) and 50% (MDO + HBC) seedlings survivorship compared to 42% (control), 0% (MDO alone) and 4% (MDO + HBC) for A. schaueriana . This variability may be due to differences in species physiology. Stem growth, diameter and number of leaves remained constant during the 6 months of the experiment with marine diesel oil and hydrocarbon-degrading bacterial consortium (MDO + BBC). For both mangrove species, bacterial enzymatic activity in the sediments was sufficient to maintain cell counts of 10 7  cells cm −3 in the rhizospheric soil and possibly synthetize the extracellular polymeric substances (EPS) that may emulsify and solubilize oil products.
ISSN:2190-572X
2190-5738
DOI:10.1007/s13205-022-03212-4