Two hopanoids, 17b(H),21b(H)-hop-22(29)-ene (diploptene) and 17b(H),21b(H)-bishomohopanoic acid (bbC32HA), are the most abundant among the pentacyclic triterpenoids found in Recent sediments of the Paci®c Ocean alongside the Japanese Islands. The concentration of diploptene normalized to organic carbon content is higher in sediments where C37 polyunsaturated alkene (a biomarker of Haptophytes) ...

Ocean Drilling Program Leg 201 was the first ocean drilling expedition dedicated to the study of life deep beneath the seafloor. Its seven sites were selected to represent the general range of subsurface environments that exist in marine sediments throughout most of the world’s oceans. In water depths as great as 5300 m and as shallow as 150 m, the expedition drilled as deep as 420 m into ocean...

Magnetotactic bacteria from freshwater and marine sediments orient and navigate along geomagnetic field lines. Their magnetotactic response is based on intracellular, single magnetic domains of ferrimagnetic magnetite, which impart a permanent magnetic dipole moment to the cell.

Laboratory cultures of the fungus Plectosphaerella cucumerina obtained from marine sediments collected in Barkley Sound, British Columbia, yielded the novel alkaloids plectosphaeroic acids A (1) to C (3). The alkaloids 1-3 are inhibitors of indoleamine 2,3-dioxygenase (IDO).

Complex interactions between microbial communities and geochemical processes drive the major element cycles control function of marine sediments as a dynamic reservoir organic matter. Sulfate reduction is globally dominant pathway anaerobic mineralisation main source sulfide. The effective re-oxidation this sulfide at direct or indirect expense oxygen prerequisite for aerobic life on our planet...

The deep marine subsurface is a vast habitat for microbial life where cells may live on geologic timescales. Because DNA in sediments may be preserved on long timescales, ribosomal RNA (rRNA) is suggested to be a proxy for the active fraction of a microbial community in the subsurface. During an investigation of eukaryotic 18S rRNA by amplicon pyrosequencing, unique profiles of Fungi were found...

With respect to their terrestrial relatives, marine Bacillales have not been sufficiently investigated. In this report, the diversity of deep-sea Bacillales, isolated from seamount and non-seamount stations at 3,425 to 3,580 m depth in the Tyrrhenian Sea, was investigated using PCR fingerprinting and 16S rRNA sequence analysis. The isolate collection (n=120) was de-replicated by automated ribos...

Pollution of marine waters is one of the important issues that has a irreparable effects. Also, in the organic oil pollutants, due to inappropriate effects on the environment and humans health and ability to create cancer, hydro carbons of polycyclic (PAHS) and heavy metals (Ni,Hg,V) have a particular importance. According to the importance of study of the environ mental contaminants in the fou...