Molecular Relationships in Biofilm Formation and the Biosynthesis of Exoproducts in Pseudoalteromonas spp.

Alviz-Gazitua, Pablo; González, Alex; Lee, Matthew R.; Aranda, Carlos

doi:10.1007/s10126-022-10097-0

Cited by 3 publications

(2 citation statements)

References 183 publications

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“…Most of the Pseudoalteromonas species obtained from living surfaces are often found in epiphytic and epizoic microbiomes associated with marine microorganisms [ 76 ]. Pseudoalteromonas isolates are frequently recognized as valuable sources of bioactive exoproducts, specifically secondary metabolites like exopolymeric substances and extracellular enzymes [ 77 ].…”

Section: Discussionmentioning

confidence: 99%

Unraveling the Diverse Profile of N-Acyl Homoserine Lactone Signals and Their Role in the Regulation of Biofilm Formation in Porphyra haitanensis-Associated Pseudoalteromonas galatheae

Aslam,

Pei,

et al. 2023

Microorganisms

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N-acyl homoserine lactones (AHLs) are small, diffusible chemical signal molecules that serve as social interaction tools for bacteria, enabling them to synchronize their collective actions in a density-dependent manner through quorum sensing (QS). The QS activity from epiphytic bacteria of the red macroalgae Porphyra haitanensis, along with its involvement in biofilm formation and regulation, remains unexplored in prior scientific inquiries. Therefore, this study explores the AHL signal molecules produced by epiphytic bacteria. The bacterium isolated from the surface of P. haitanensis was identified as Pseudoalteromonas galatheae by 16s rRNA gene sequencing and screened for AHLs using two AHL reporter strains, Agrobacterium tumefaciens A136 and Chromobacterium violaceum CV026. The crystal violet assay was used for the biofilm-forming phenotype. The inferences revealed that P. galatheae produces four different types of AHL molecules, i.e., C4-HSL, C8-HSL, C18-HSL, and 3-oxo-C16-HSL, and it was observed that its biofilm formation phenotype is regulated by QS molecules. This is the first study providing insights into the QS activity, diverse AHL profile, and regulatory mechanisms that govern the biofilm formation phenotype of P. galatheae. These findings offer valuable insights for future investigations exploring the role of AHL producing epiphytes and biofilms in the life cycle of P. haitanensis.

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Section: Discussionmentioning

confidence: 99%

Unraveling the Diverse Profile of N-Acyl Homoserine Lactone Signals and Their Role in the Regulation of Biofilm Formation in Porphyra haitanensis-Associated Pseudoalteromonas galatheae

Aslam,

Pei,

et al. 2023

Microorganisms

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“…Pseudoalteromonas isolates can produce biofilms on surfaces and may exhibit antifouling activity (Alviz‐Gazitua et al, 2022), or reside within epibiotic biofilms that confer various benefits to the host (Wahl et al, 2012). Strains of Pseudoalteromonas have been shown to influence the settlement and metamorphosis of larvae from various invertebrate species via compound production and/or the production of phage tail‐like structures (Peng et al, 2020; Shikuma et al, 2014; Tebben et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Genome‐based taxonomic analysis of the genus Pseudoalteromonas reveals heterotypic synonyms

Videau,

Shlafstein,

Oline

et al. 2024

Environmental Microbiology

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The Pseudoalteromonas genus comprises members that have been demonstrated to play significant ecological roles and produce enzymes, natural products, and activities that are beneficial to the environment and economy. A comprehensive evaluation of the genus revealed that the genomes of several Pseudoalteromonas species are highly similar to each other, exceeding species cutoff values. This evaluation involved determining and comparing the average nucleotide identity, in silico DNA–DNA hybridization, average amino acid identity, and the difference in G + C% between Pseudoalteromonas type strains with publicly available genomes. The genome of the Pseudoalteromonas elyakovii type strain was further assessed through additional sequencing and genomic comparisons to historical sequences. These findings suggest that six Pseudoalteromonas species, namely P. mariniglutinosa, P. donghaensis, P. maricaloris, P. elyakovii, P. profundi, and P. issachenkonii, should be reclassified as later heterotypic synonyms of the following validly published species: P. haloplanktis, P. lipolytica, P. flavipulchra, P. distincta, P. gelatinilytica, and P. tetraodonis. Furthermore, two names without valid standing, ‘P. telluritireducens’ and ‘P. spiralis’, should be associated with the validly published Pseudoalteromonas species P. agarivorans and P. tetraodonis, respectively.

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Antibacterial and antibiofilm activity of extracts from sponge-associated bacterial endophytes

Abdulrahman

Jamal

Pugazhendi

et al. 2023

Preparative Biochemistry & Biotechnology

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Molecular Relationships in Biofilm Formation and the Biosynthesis of Exoproducts in Pseudoalteromonas spp.

Cited by 3 publications

References 183 publications

Unraveling the Diverse Profile of N-Acyl Homoserine Lactone Signals and Their Role in the Regulation of Biofilm Formation in Porphyra haitanensis-Associated Pseudoalteromonas galatheae

Unraveling the Diverse Profile of N-Acyl Homoserine Lactone Signals and Their Role in the Regulation of Biofilm Formation in Porphyra haitanensis-Associated Pseudoalteromonas galatheae

Genome‐based taxonomic analysis of the genus Pseudoalteromonas reveals heterotypic synonyms

Antibacterial and antibiofilm activity of extracts from sponge-associated bacterial endophytes

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