A5049776174- Genomics and Phylogenetic Studies
- Microbial Community Ecology and Physiology
- Protist diversity and phylogeny
- Enzyme Production and Characterization
- Enzyme Structure and Function
- Glycosylation and Glycoproteins Research
- Bacteriophages and microbial interactions
- Methane Hydrates and Related Phenomena
- Algal biology and biofuel production
- Microbial Metabolic Engineering and Bioproduction
- Diatoms and Algae Research
- Plant Pathogens and Fungal Diseases
- Legionella and Acanthamoeba research
- Microbial Metabolites in Food Biotechnology
- Metal Extraction and Bioleaching
- Probiotics and Fermented Foods
- Biofuel production and bioconversion
- Photosynthetic Processes and Mechanisms
- Wastewater Treatment and Nitrogen Removal
- Aquaculture disease management and microbiota
- Microbial Natural Products and Biosynthesis
- Polysaccharides and Plant Cell Walls
- Carbohydrate Chemistry and Synthesis
- Legume Nitrogen Fixing Symbiosis
- Oral microbiology and periodontitis research
St Xavier’s College
2022
St. Xavier's College (Autonomous)
2022
University of Coimbra
2012-2021
Biocant
2010-2018
Universidade de São Paulo
2015
Centro de Neurociências e Biologia Celular
2005-2009
Justus-Liebig-Universität Gießen
2005
Louisiana State University
2002-2005
Escola Superior de Tecnologia da Saúde de Coimbra
2004
Universidade do Porto
2002
Advancement of DNA sequencing technology allows the routine use genome sequences in various fields microbiology. The information held proved to provide objective and reliable means taxonomy prokaryotes. Here, we describe minimal standards for quality how they can be applied taxonomic purposes.
The ionizing-radiation-resistant fractions of two soil bacterial communities were investigated by exposing an arid from the Sonoran Desert and a nonarid Louisiana forest to various doses ionizing radiation using (60)Co source. numbers surviving bacteria decreased as dose gamma which soils exposed increased. Bacterial isolates 30 kGy recovered soil, while no after exposure greater than 13 kGy. phylogenetic diversities culturable compared for 16S rRNA gene sequence analysis. In addition...
Strains of Deinococcus geothermalis sp. nov. were isolated from the hot spring and runoff at Agnano, Naples, Italy, São Pedro do Sul in central Portugal, while strains murrayi springs Sul, Gemil, Alcafache Portugal. The D. produce orange-pigmented colonies have an optimum growth temperature about 45 to 50°C. type two new species are extremely gamma radiation resistant. fatty acids these primarily branched-chain acids. can be distinguished each other by lower pH range than murrayi, their acid...
Two isolates, belonging to a new species of novel genus the Phylum "Deinococcus/Thermus", were recovered from hot spring runoffs on Island São Miguel in Azores. Strains RQ-24T and TU-8 are first cultured representatives distinct phylogenetic lineage within this phylum. These strains form orange/red colonies, spherical-shaped cells, have an optimum growth temperature about 50°C, pH for between 7.5 9.5, do not grow at below 6.5 or above 11.2. organisms complex media without added NaCl, but...
Two recently reported bacterial strains that are able to reductively dehalogenate polychlorinated aliphatic alkanes, including 1,2,3-trichloropropane, 1,2-dichloropropane, 1,1,2,2-tetrachloroethane, 1,1,2-trichloroethane and 1,2-dichloroethane, were further characterized clarify their taxonomic position. The two strains, designated BL-DC-8 BL-DC-9T, mesophilic, non-spore-forming, non-motile, Gram-negative staining strictly anaerobic. Cells irregular cocci, 0.3–0.6 μm in diameter. resistant...
As an addendum to the earlier proposal include rank of phylum in International Code Nomenclature Prokaryotes (Oren et al., Int J Syst Evol Microbiol 2015;65:4284-4287) we propose suffix -ota denote phyla, replacing somewhat awkward -aeota. We therefore present a new draft modified version Rule 8 and corrected list names phyla be considered for validation after approval Code.
We examined the accumulation of organic solutes under optimum growth conditions in 12 species thermophilic and hyperthermophilic Archaea belonging to Crenarchaeota Euryarchaeota. Pyrobaculum aerophilum, Thermoproteus tenax, Thermoplasma acidophilum, members order Sulfolobales accumulated trehalose. Pyrococcus furiosus di-myo-inositol-1,1(prm1)(3,3(prm1))-phosphate (beta)-mannosylglycerate, Methanothermus fervidus cyclic-2,3-bisphosphoglycerate while only solute detected Pyrodictium occultum...
16S ribosomal DNA (rDNA) sequences were determined for the five species of genus Deinococcus (Deinococcus erythromyxa, proteolyticus, radiodurans, radiophilus, and radiopugnans) single Deinobacter (Deinobacter grandis). With exception deinococci form a coherent phylogenetic cluster which is related to Thermus-Meiothermus lineage. An analysis rDNA sequence erythromyxa revealed that this organism an actinomycete member Kocuria. grandis falls within radiation phylogenetically can be considered...
An extremely halophilic archaeon was isolated from a sample of the brine–sediment interface Shaban Deep in northern Red Sea. Phylogenetic analysis 16S rRNA gene sequence revealed close proximity to Halorhabdus utahensis (99.3 %), sole species genus Halorhabdus. Strain SARL4BT formed non-pigmented colonies and showed optimum growth at 45 °C, 27 % (w/v) NaCl pH 6.5–7.0. This organism utilized few complex substrates, such as yeast extract starch, for growth. grew under anaerobic microaerophilic...
Five psychrophilic bacterial strains were isolated from soil samples collected above the treeline of alpine environments. Phylogenetic analysis based on 16S rRNA gene sequences indicated that these organisms represent four novel species genus Deinococcus; levels sequence similarity to type recognized Deinococcus in range 89.3–94.7 %. Strains PO-04-20-132T, PO-04-20-144, PO-04-19-125T, ME-04-01-32T and ME-04-04-52T grew aerobically, with optimum growth at 10 °C pH 6–9. The major respiratory...
The International Code of Nomenclature Prokaryotes covers the nomenclature prokaryotes up to rank class. We propose here modifying include phylum so that names phyla fulfil rules will obtain standing in nomenclature.
As part of a study the diversity planctomycetes, two novel strains, designated OJF2 T and OJF8, were isolated from sediments freshwater aquarium. The organisms chemoheterotrophic, spherical pink-pigmented, had an optimum growth temperature about 30–35 °C pH for around 7.5–8.5. predominant fatty acids C 18 : 1 ω9 c 16 0 . strains able to assimilate several sugars organic acids. 16S rRNA gene sequence analysis confirmed affiliation these phylum ‘ Planctomycetes ’; they showed highest...
Two strictly anaerobic bacterial strains, designated IP3-3(T) and SBP-1, were isolated from groundwater contaminated by chlorinated alkanes alkenes at a Superfund Site located near Baton Rouge, Louisiana (USA). Both strains reductively dehalogenate variety of polychlorinated aliphatic alkanes, including 1,2-dichloroethane, 1,2-dichloropropane, 1,1,2,2-tetrachloroethane, 1,1,2-trichloroethane 1,2,3-trichloropropane, when provided with hydrogen as the electron donor. To clarify their taxonomic...
One strain of a thermophilic, slightly halotolerant bacterium was isolated from thermally polluted industrial runoff near Salisbury, United Kingdom. This organism, PRD-1T (T = type strain), for which we propose the name Rubrobacter xylanophilus sp. nov., produces short gram-positive rods and coccoid cells forms pink colonies. The optimum growth temperature is approximately 60°C. Unusual internal branched-chain fatty acids (namely, 12-methylhexadecanoic acid 14-methyloctadecanoic acid) make...
ABSTRACT The effects of salinity and growth temperature on the accumulation intracellular organic solutes were examined by nuclear magnetic resonance spectroscopy (NMR) in Thermococcus litoralis , celer stetteri zilligii (strain AN1). In addition, stage composition medium studied T. . A novel compound identified as β-galactopyranosyl-5-hydroxylysine was detected grown peptone-containing medium. Besides this newly discovered compound, accumulated mannosylglycerate, aspartate, α-glutamate, di-...