Genome analysis of a coral-associated bacterial consortium highlights complementary hydrocarbon degradation ability and other beneficial mechanisms for the host

Helena Villela, Flúvio Modolon, Júnia Schultz, Nathalia Delgadillo-Ordoñez, Susana Carvalho, Adriana Ururahy Soriano, Raquel Silva Peixoto*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Here we report the oil degradation genetic potential of six oil-degrading bacteria (ODB), previously used as a bioremediation consortium, isolated from the hydrocoral Millepora alcicornis and seawater. The strains were identified as Halomonas sp. (LC_1), Cobetia sp. (LC_6), Pseudoalteromonas shioyasakiensis (LC_2), Halopseudomonas aestusnigri (LC_3), Shewanella algae (LC_4), and Brucella intermedia (LC_5). The taxonomic identification differed from that of the original paper when we used whole genome gene markers instead of just 16S rRNA gene. Genes responsible for the degradation of aromatic hydrocarbons and n-alkanes were found in all genomes, although different (and complementary) steps of the metabolic pathways were unique to each strain. Genes for naphthalene and toluene degradation were found in various strains. We annotated quinate degradation genes in LC_6, while LC_3 and LC_5 presented genes for biosurfactant and rhamnolipid biosynthesis. We also annotated genes related to beneficial mechanisms for corals, such as genes involved in nitrogen and DMSP metabolism, cobalamin biosynthesis and antimicrobial compounds production. Our findings reinforce the importance of using bacterial consortia for bioremediation approaches instead of single strains, due to their complementary genomic arsenals. We also propose a genome-based framework to select complementary ODB that can provide additional benefits to coral health.

Original languageEnglish (US)
Article number12273
JournalScientific Reports
Volume13
Issue number1
DOIs
StatePublished - Dec 2023

Bibliographical note

Funding Information:
This study received support grants FCC/1/1973-51-01, REI/1/4984-01, and BAS/1/ 1095-01-01 from King Abdullah University of Science and Technology (KAUST), the National Council for Scientific and Technological Development (CNPq), the National Council for the Improvement of Higher Education (CAPES), and PETROBRAS.

Publisher Copyright:
© 2023, The Author(s).

ASJC Scopus subject areas

  • General

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