Publications by authors named "Eidy Santos"
The genus encompasses seaweeds that are widely distributed throughout the world's oceans, with found along the tropical and subtropical coasts of the Western Atlantic. This wide distribution can lead to structured populations due to environmental differences (e.g.
View Article and Find Full Text PDFInfectious diseases such as white plague syndrome (WPS) and black band disease (BBD) have caused massive coral loss worldwide. We performed a metaproteomic study on the Abrolhos coral Mussismilia braziliensis to define the types of proteins expressed in healthy corals compared to WPS- and BBD-affected corals. A total of 6363 MS/MS spectra were identified as 361 different proteins.
View Article and Find Full Text PDFThe aim of this study was to investigate the planktonic and the holobiont Madracis decactis (Scleractinia) microbial diversity along a turbulence-driven upwelling event, in the world's most isolated tropical island, St Peter and St Paul Archipelago (SPSPA, Brazil). Twenty one metagenomes were obtained for seawater (N = 12), healthy and bleached holobionts (N = 9) before, during and after the episode of high seawater turbulence and upwelling. Microbial assemblages differed between low turbulence-low nutrient (LLR) and high-turbulence-high nutrient (HHR) regimes in seawater.
View Article and Find Full Text PDFSeamounts are considered important sources of biodiversity and minerals. However, their biodiversity and health status are not well understood; therefore, potential conservation problems are unknown. The mesophotic reefs of the Vitória-Trindade Seamount Chain (VTC) were investigated via benthic community and fish surveys, metagenomic and water chemistry analyses, and water microbial abundance estimations.
View Article and Find Full Text PDFArticle Synopsis
- Sponges host complex communities of microbes, and while their taxonomic makeup is known, understanding their functional roles in symbiosis is a key challenge.
- Researchers analyzed the microbiota of two sponge species, Didiscus oxeata and Scopalina ruetzleri, from the St Peter and St Paul archipelago using metagenomics.
- Findings revealed that while both sponge communities share core functions, they differ in microbial composition, diversity, and metabolic strategies, particularly in how they process carbon, nitrogen, and sulfur.
Article Synopsis
- Rhodoliths are crucial coralline algae that create extensive beds in marine environments, acting as habitats for organisms and contributing significantly to calcium carbonate production, particularly in the Abrolhos Bank, Brazil.
- Despite their ecological importance, little is known about the microbial diversity and interactions within rhodoliths, prompting a detailed study on their microbiome and functions.
- The research found a unique microbiome in rhodoliths that enhances biomineralization, with high photosynthesis rates generating substantial carbon production, highlighting their role in the South Atlantic Ocean's ecosystem.
Article Synopsis
- Coral health is declining globally due to various stressors, with white plague disease (WP) posing a significant threat to the native coral species Mussismilia braziliensis in Brazil's Abrolhos Bank.
- Researchers conducted a metagenomic analysis to identify the microbial communities associated with healthy and WP-affected corals and developed a protocol for extracting DNA from coral tissues.
- Their findings showed a variety of microbes present in both healthy and diseased corals, with specific groups like Vibrionales and eukaryotic sequences (Alveolata, Apicomplexa) being more prevalent in WP-affected corals, indicating that WP disease may arise from a combination of multiple microbial factors.
Vibrio campbellii PEL22A was isolated from open ocean water in the Abrolhos Bank. The genome of PEL22A consists of 6,788,038 bp (the GC content is 45%). The number of coding sequences (CDS) is 6,359, as determined according to the Rapid Annotation using Subsystem Technology (RAST) server.
View Article and Find Full Text PDFWe analyzed the effect of N-acetyl-D-glucosamine (GlcNAc) on gene expression in the marine bacterium Vibrio parahaemolyticus. The total number of genes whose expression was induced and repressed genes in the presence of GlcNAc was 81 and 55, respectively. The induced genes encoded a variety of products, including proteins related to energy metabolism (e.
View Article and Find Full Text PDFVibrio coralliilyticus has been implicated as an important pathogen of coral species worldwide. In this study, the nearly complete genome of Vibrio coralliilyticus strain P1 (LMG23696) was sequenced and proteases implicated in virulence of the strain were specifically investigated. The genome sequence of P1 (5,513,256 bp in size) consisted of 5222 coding sequences and 58 RNA genes (53 tRNAs and at least 5 rRNAs).
View Article and Find Full Text PDFBackground: Gluconacetobacter diazotrophicus Pal5 is an endophytic diazotrophic bacterium that lives in association with sugarcane plants. It has important biotechnological features such as nitrogen fixation, plant growth promotion, sugar metabolism pathways, secretion of organic acids, synthesis of auxin and the occurrence of bacteriocins.
Results: Gluconacetobacter diazotrophicus Pal5 is the third diazotrophic endophytic bacterium to be completely sequenced.
This is the first broad proteomic description of Gluconacetobacter diazotrophicus, an endophytic bacterium, responsible for the major fraction of the atmospheric nitrogen fixed in sugarcane in tropical regions. Proteomic coverage of G. diazotrophicus PAL5 was obtained by two independent approaches: 2-DE followed by MALDI-TOF or TOF-TOF MS and 1-DE followed by chromatography in a C18 column online coupled to an ESI-Q-TOF or ESI-IT mass spectrometer.
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