Tina Keller‐Costa

ORCID: 0000-0003-3702-9192
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About
Contact & Profiles
Research Areas
  • Genomics and Phylogenetic Studies
  • Marine Sponges and Natural Products
  • Coral and Marine Ecosystems Studies
  • Microbial Community Ecology and Physiology
  • Microbial Natural Products and Biosynthesis
  • Environmental DNA in Biodiversity Studies
  • Aquaculture disease management and microbiota
  • Studies on Chitinases and Chitosanases
  • Animal Behavior and Reproduction
  • Enzyme Production and Characterization
  • Reproductive biology and impacts on aquatic species
  • Aquaculture Nutrition and Growth
  • Fish Ecology and Management Studies
  • Probiotics and Fermented Foods
  • Insect and Arachnid Ecology and Behavior
  • Chemical synthesis and alkaloids
  • Microbial Metabolic Engineering and Bioproduction
  • Gut microbiota and health
  • Olfactory and Sensory Function Studies
  • Microbial Metabolism and Applications
  • Coastal wetland ecosystem dynamics
  • Methane Hydrates and Related Phenomena
  • Vibrio bacteria research studies
  • Polar Research and Ecology
  • biodegradable polymer synthesis and properties

University of Lisbon
2017-2025

Institute for Biotechnology and Bioengineering
2017-2025

Instituto Politécnico de Lisboa
2018-2024

Instituto Superior Técnico
2022-2023

University of Algarve
2012-2017

University of Évora
2012-2014

University of Groningen
2014

Centro de Ciências do Mar do Algarve
2012

Our paper is the first study to synthesize currently available but decentralized data of cultured microbes associated with corals. We were able collate 3,055 isolates across a number published studies and unpublished collections from various laboratories researchers around world.

10.1128/msystems.01249-20 article EN mSystems 2021-06-22

Abstract Marine sponges are early-branching, filter-feeding metazoans that usually host complex microbiomes comprised of several, currently uncultivatable symbiotic lineages. Here, we use a low-carbon based strategy to cultivate low-abundance bacteria from Spongia officinalis . This approach favoured the growth Alphaproteobacteria strains in genera Anderseniella , Erythrobacter Labrenzia Loktanella Ruegeria Sphingorhabdus Tateyamaria and Pseudovibrio besides two likely new Rhodobacteraceae...

10.1038/s41598-019-38737-x article EN cc-by Scientific Reports 2019-02-13

Abstract Background Chitin ranks as the most abundant polysaccharide in oceans yet knowledge of shifts structure and diversity chitin-degrading communities across marine niches is scarce. Here, we integrate cultivation-dependent -independent approaches to shed light on chitin processing potential within microbiomes sponges, octocorals, sediments, seawater. Results We found that cultivatable host-associated bacteria genera Aquimarina , Enterovibrio Microbulbifer Pseudoalteromonas Shewanella...

10.1186/s40168-020-00970-2 article EN cc-by Microbiome 2021-02-14

Abstract Background In octocorals (Cnidaria Octocorallia), the functional relationship between host health and its symbiotic consortium has yet to be determined. Here, we employed comparative metagenomics uncover distinct phylogenetic features of microbiomes healthy Eunicella gazella , verrucosa Leptogorgia sarmentosa tissues, in contrast with found seawater sediments. We further explored how octocoral microbiome shifts a pathobiome state E. . Results Multivariate analyses based on 16S rRNA...

10.1186/s40168-021-01031-y article EN cc-by Microbiome 2021-03-25

Abstract Background The role of bacterial symbionts that populate octocorals (Cnidaria, Octocorallia) is still poorly understood. To shed light on their metabolic capacities, we examined 66 high-quality metagenome-assembled genomes (MAGs) spanning 30 prokaryotic species, retrieved from microbial metagenomes three octocoral species and seawater. Results Symbionts healthy were affiliated with the taxa Endozoicomonadaceae , Candidatus Thioglobaceae Metamycoplasmataceae unclassified...

10.1186/s40168-022-01343-7 article EN cc-by Microbiome 2022-09-22

Probiotics are currently the main hope as a potential medicine for corals, organisms that considered marine “canaries of coal mine” and threatened with extinction. Our experiments have proved concept probiotics mitigate coral bleaching can also prevent mortality.

10.1128/msystems.00921-22 article EN cc-by mSystems 2023-01-23

Bacteria are believed to play an important role in the fitness and biochemistry of sponges (Porifera). Pseudomonas species (Gammaproteobacteria, Pseudomonadales) capable colonizing a broad range eukaryotic hosts, but knowledge their diversity function freshwater invertebrates is rudimentary. We assessed diversity, structure antimicrobial activities spp. sponge Ephydatia fluviatilis. Polymerase Chain Reaction – Denaturing Gradient Gel Electrophoresis (PCR-DGGE) fingerprints global regulator...

10.1371/journal.pone.0088429 article EN cc-by PLoS ONE 2014-02-12

Microbial communities inhabiting gorgonian corals are believed to benefit their hosts through nutrient provision and chemical defence; yet much remains be learned about phylogenetic uniqueness cultivability. Here, we determined the prokaryotic community structure distinctiveness in Eunicella labiata by Illumina sequencing of 16S rRNA genes from seawater metagenomic DNA. Furthermore, used a 'plate-wash' methodology compare diversity 'total' bacteriome its 'cultivatable' fraction. With 1016...

10.1093/femsec/fix143 article EN FEMS Microbiology Ecology 2017-10-24

Two novel natural products, the polyketide cuniculene and peptide antibiotic aquimarin, were recently discovered from marine bacterial genus Aquimarina. However, diversity of secondary metabolite biosynthetic gene clusters (SM-BGCs) in Aquimarina genomes indicates a far greater potential. In this study, nine representative strains tested for antimicrobial activity against diverse human-pathogenic microorganisms subjected to metabolomic genomic profiling. We found an inhibitory most Candida...

10.3390/md20070423 article EN cc-by Marine Drugs 2022-06-28

<title>Abstract</title> Background Biological chitin degradation is a major process in the ocean, governed primarily by action of microorganisms. It now known that structure and taxonomic profile chitin-degrading microbial communities change across marine biotopes, but efforts to harness turnover potential within these laboratory have seldom been attempted. In this study, we characterized prokaryotic associated with sponge <italic>Sarcotragus spinosulus</italic>, octocoral <italic>Eunicella...

10.21203/rs.3.rs-3456333/v1 preprint EN cc-by Research Square (Research Square) 2025-02-19

This study describes a Gram-stain-negative, rod-shaped, facultatively anaerobic bacterial species isolated from the octocoral Litophyton sp. inhabiting live coral aquarium at Oceanário de Lisboa in Portugal. Four strains, NE35, NE40T, NE41 and NE43, were classified into genus Endozoicomonas by means of 16S rRNA gene whole-genome sequence homologies. We then performed phylogenetic, phylogenomic biochemical analyses to examine their novel status within genus, based on comparisons with...

10.1099/ijsem.0.006696 article EN INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY 2025-03-05

Summary This study determines the natural product biosynthesis and full coding potential within bacterial genus Aquimarina . Using comprehensive phylogenomics functional genomics, we reveal that phylogeny instead of isolation source [host‐associated (HA) vs. free‐living (FL) habitats] primarily shape inferred metabolism species. These can be coherently organized into three major clusters, each presenting distinct profiles suggesting evolutionary trajectories strongly underpin their secondary...

10.1111/1462-2920.14747 article EN Environmental Microbiology 2019-07-17

Abstract Background Metagenomics is an expanding field within microbial ecology, microbiology, and related disciplines. The number of metagenomes deposited in major public repositories such as Sequence Read Archive (SRA) Metagenomic Rapid Annotations using Subsystems Technology (MG-RAST) rising exponentially. However, data mining interpretation can be challenging due to mis-annotated misleading metadata entries. In this study, we describe the Marine Metagenome Metadata Database...

10.1186/s40793-022-00449-7 article EN cc-by Environmental Microbiome 2022-11-18

Marine microbiomes are prolific sources of bioactive natural products potential pharmaceutical value. This study inspected two culture collections comprising 919 host-associated marine bacteria belonging to 55 genera and several thus-far unclassified lineages identify isolates with potentially rich secondary metabolism antimicrobial activities. Seventy representative had their genomes mined for metabolite biosynthetic gene clusters (SM-BGCs) were screened activities against four pathogenic...

10.3390/md21010034 article EN cc-by Marine Drugs 2022-12-30

The urination pattern of the Mozambique tilapia ( Oreochromis mossambicus ) depends on social context, and olfactory potency urine released rank (males) reproductive status (females). This strongly suggests that mediates chemical communication in this species. current study tested, firstly, whether production rate sex or and, secondly, differences volume stored are associated with variation morphology urinary bladder. Finally, effect during aggressive male–male interactions was assessed....

10.1163/1568539x-00003023 article EN Behaviour 2012-01-01

Abstract Chitin is the most abundant natural polymer in oceans, where it primarily recycled by chitin-degrading microorganisms. Endozoicomonadaceae (Oceanospirillales) bacteria are prominent symbionts of sessile marine animals, particularly corals, and presumably contribute to nutrient cycling their hosts. To reveal chitinolytic potential this iconic, animal-dwelling bacterial family, we examined 42 publicly available genomes cultured uncultured strains for presence chitinase-encoding genes....

10.1038/s43705-023-00316-7 article EN cc-by ISME Communications 2023-10-14
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