The present study reports on the metallothionein expression in the hydrothermal vent mussel Bathymodiolus thermophilus. Metallothioneins (MT) are proteins involved in intracellular metal regulation and conserved throughout the animal kingdom. The hydrothermal vent environment presents peculiarities (high levels of sulfides and metals, low pH, anoxia) that may have driven associated species to develop original evolutionary ways to face these extreme living conditions. Mussels were exposed to different metal solutions at the atmospheric pressure. The MT mRNA levels and MT contents were measured in gills and mantles of each exposed mussel. The intracellular metal distribution was estimated in fractions obtained after the centrifugation of tissue homogenates. A few of the tested metals (Ag, Cu, Cd, Hg and Zn) were able to significantly induce MT mRNA levels. Silver was the only one that produced a significant increase of the MT protein level in both mantle and gills. The gills always presented higher MT protein levels than the mantle did, while their MT mRNA levels were similar. Our data show that MT mRNA and MT protein levels do not follow a clear relationship in the gills and mantle of B. thermophilus and we assume that a posttranscriptional control occurs in these mussels.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.cbpc.2006.03.006 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Convergent Evolution of Armor: Thermal Resistance in Deep-Sea Hydrothermal Vent Crustaceans.
Biology (Basel)
November 2024
Department of Ocean Sciences, Inha University, 100 Inha-ro, Michuhol-gu, Incheon 22212, Republic of Korea.
Organisms occupy diverse ecological niches worldwide, each with characteristics finely evolved for their environments. Crustaceans residing in deep-sea hydrothermal vents, recognized as one of Earth's extreme environments, may have adapted to withstand severe conditions, including elevated temperatures and pressure. This study compares the exoskeletons of two vent crustaceans (bythograeid crab sp.
View Article and Find Full Text PDFA Prebiotic Route to Lactate from Acetaldehyde, Cyanide and Carbon Dioxide.
Chemistry
December 2024
University of Copenhagen, Chemistry, Universitetsparken 5, Kemisk Institut, 2100, Copenhagen, DENMARK.
The atmospheric concentration of carbon dioxide (CO2) has fluctuated throughout Earth's history. However, the role of CO2 in prebiotic chemistry has predominantly been limitedly postulated as a C1 precursor, which can be reduced to carbon monoxide or methane mimicking the Wood-Ljungdahl pathway. Herein we present neglected roles of CO2 as an active promoter in accessing biologically important C3-builidng blocks such as lactate, via redox-economic reaction cycles from cyanide (C1) and acetaldehyde (C2).
View Article and Find Full Text PDFIdentification and Characterization of Two Aryl Sulfotransferases from Deep-Sea Marine Fungi and Their Implications in the Sulfation of Secondary Metabolites.
Mar Drugs
December 2024
Univ Brest, INRAE, Laboratoire Universitaire de Biodiversité et Écologie Microbienne, F-29280 Plouzané, France.
Sulfation plays a critical role in the biosynthesis of small molecules, regulatory mechanisms such as hormone signaling, and detoxification processes (phase II enzymes). The sulfation reaction is catalyzed by a broad family of enzymes known as sulfotransferases (SULTs), which have been extensively studied in animals due to their medical importance, but also in plant key processes. Despite the identification of some sulfated metabolites in fungi, the mechanisms underlying fungal sulfation remain largely unknown.
View Article and Find Full Text PDFPopulation Genetics of the Deep-sea Acorn Barnacle (Hoek, 1883) and the First Report of its Affiliation with a Hydrothermal Vent Field.
Zool Stud
September 2024
German Centre for Marine Biodiversity Research (DZMB), c/o Biozentrum Grindel, Martin-Luther-King-Platz 3, 20146 Hamburg, Germany. E-mail: (Neuhaus) ; (Brix).
Confined by the Mid-Atlantic Ridge and the European continental shelf, the deep-sea acorn barnacle (Hoek, 1883) lives in the northeast Atlantic deep sea, where it has been frequently reported in high current areas. Cemented to a solid substrate during its entire adult life, the species can only disperse by means of planktotrophic nauplius larvae. This study reports on the occurrence, ecology and genetic connectivity of from four sites within the northeastern Iceland Basin and presents the first record of the species living affiliated with hydrothermal vent field on the Reykjanes Ridge axis.
View Article and Find Full Text PDFCumaceans (Crustacea, Peracarida) associated with shallow-water hydrothermal vents at Banderas Bay, Mexico.
Biodivers Data J
December 2024
Departamento de Artes, Educación y Humanidades, Centro Universitario de la Costa, Universidad de Guadalajara, Av. Universidad de Guadalajara 203, CP 48280, Puerto Vallarta, Jalisco, Mexico Departamento de Artes, Educación y Humanidades, Centro Universitario de la Costa, Universidad de Guadalajara, Av. Universidad de Guadalajara 203, CP 48280 Puerto Vallarta, Jalisco Mexico.
Background: Cumaceans mostly inhabit marine environments, where they play a crucial role in marine food webs and actively participate in the transfer between benthic and pelagic systems. Scientific interest in these crustaceans has been increasing, but is limited to certain geographic areas, which do not include extreme environments such as hydrothermal vents.
New Information: Therefore, this study aimed to report the distribution of cumaceans in shallow-water hydrothermal vents at Banderas Bay and to identify the specimens present.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!