Ileana Pérez-Rodríguez

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We have tested the hypothesis, suggested by our previous neurochemical studies, that the inhibition of sexual behavior that follows unrestricted mating could be caused by a blockade of dopaminergic transmission. Male rats were allowed to copulate until they reached a satiety criterion. The following day, after verification that they were sexually inactive,(More)
Thermovibrio ammonificans type strain HB-1(T) is a thermophilic (Topt: 75°C), strictly anaerobic, chemolithoautotrophic bacterium that was isolated from an active, high temperature deep-sea hydrothermal vent on the East Pacific Rise. This organism grows on mineral salts medium in the presence of CO2/H2, using NO3(-) or S(0) as electron acceptors, which are(More)
Caminibacter mediatlanticus strain TB-2(T) [1], is a thermophilic, anaerobic, chemolithoautotrophic bacterium, isolated from the walls of an active deep-sea hydrothermal vent chimney on the Mid-Atlantic Ridge and the type strain of the species. C. mediatlanticus is a Gram-negative member of the Epsilonproteobacteria (order Nautiliales) that grows(More)
Chemosynthetic Epsilonproteobacteria from deep-sea hydrothermal vents colonize substrates exposed to steep thermal and redox gradients. In many bacteria, substrate attachment, biofilm formation, expression of virulence genes and host colonization are partly controlled via a cell density-dependent mechanism involving signal molecules, known as quorum(More)
A thermophilic, anaerobic, chemosynthetic bacterium, designated strain MB-1(T), was isolated from the walls of an active deep-sea hydrothermal vent chimney on the East Pacific Rise at degrees 50' N 10 degrees 17' W. The cells were Gram-negative-staining rods, approximately 1-1.5 mum long and 0.3-0.5 mum wide. Strain MB-1(T) grew at 25-65 degrees C (optimum(More)
A mesophilic, aerobic, facultatively chemolithoautotrophic bacterium, designated strain EPR70(T), was isolated from hydrothermal fluids from diffuse-flow vents on the East Pacific Rise at degrees 50' N 10 degrees 17' W. Cells were Gram-negative rods, approximately 0.8-1.0 microm long and 0.3-0.5 microm wide. Strain EPR70(T) grew at 20-40 degrees C (optimum(More)
A novel hyperthermophilic, anaerobic, chemolithoautotrophic bacterium, designated strain HB-8(T), was isolated from the tube of Alvinella pompejana tubeworms collected from the wall of an actively venting sulfide structure on the East Pacific Rise at 13° N. The cells were Gram-negative rods, approximately 1.0-1.5 µm long and 0.5 µm wide. Strain HB-8(T) grew(More)
Over the past few years the relevance of nitrate respiration in microorganisms from deep-sea hydrothermal vents has become evident. In this study, we surveyed the membrane-bound nitrate reductase (Nar) encoding gene in three different deep-sea vent microbial communities from the East Pacific Rise and the Mid-Atlantic Ridge. Additionally, we tested pure(More)
Continuous culture under elevated pressures is an important technique for expanding the exploration of microbial growth and survival in extreme environments associated with the deep biosphere. Here we present a benchtop stirred continuous culture bioreactor capable of withstanding temperatures ranging from 25 to 120°C and pressures as high as 69 MPa. The(More)
A thermophilic, anaerobic, chemolithoautotrophic bacterium, strain TB-6(T), was isolated from a deep-sea hydrothermal vent located on the East Pacific Rise at 9° N. The cells were Gram-staining-negative and rod-shaped with one or more polar flagella. Cell size was approximately 1-1.5 µm in length and 0.5 µm in width. Strain TB-6(T) grew between 45 and 70 °C(More)