Results 61 to 70 of about 3,987 (248)

Benthic archaea as potential sources of tetraether membrane lipids in sediments across an oxygen minimum zone [PDF]

open access: yesBiogeosciences, 2018
Benthic archaea comprise a significant part of the total prokaryotic biomass in marine sediments. Recent genomic surveys suggest they are largely involved in anaerobic processing of organic matter, but the distribution and abundance of these archaeal ...
M. A. Besseling   +5 more
doaj   +1 more source

From ether to acid: a plausible degradation pathway of glycerol dialkyl glycerol tetraethers [PDF]

open access: yes, 2016
Glycerol dialkyl glycerol tetraethers (GDGTs) are ubiquitous microbial lipids with extensive demonstrated and potential roles as paleoenvironmental proxies.
Baugh   +76 more
core   +2 more sources

Are Marine Group II Euryarchaeota significant contributors to tetraether lipids in the ocean? [PDF]

open access: yes, 2014
The first line of evidence is the presence of GDGTs, including crenarchaeol, in suspended particulate matter (SPM) at 83 m, the archaeal community of which is nearly exclusively composed of MG-II (>94% of archaeal reads) (table 1 in ref. 1) as determined
Hopmans, E.C.   +4 more
core   +1 more source

Constraints in the application of the Branched and Isoprenoid Tetraether index as a terrestrial input proxy [PDF]

open access: yes, 2011
Determination of the relative inputs of aquatic autochthonous and terrestrial allochthonous organic matter into marine and lacustrine environments is essential to understanding the global carbon budget.
Fietz, Susanne   +4 more
core   +2 more sources

Archaeosomes and Tetraether Lipid Liposome

open access: yesPharmaceutical Sciences and Research, 2012
Archaea have phytanyl ether lipids which is one of the characteristics that separates them from bacteria and eukaryotes. Some archaea have also unique membrane spanning tetrae- ther lipids (T EL); in Sulfolobus and Ihermoplasma species these TELmake up the majority of total membrane lipids.
openaire   +1 more source

Tracing tetraether lipids from source to sink in the Rhône River system (NW Mediterranean) [PDF]

open access: yes, 2015
In this study, we investigated soils and river suspended particulate matter (SPM) collected in the Rhône and its tributary basins as well as marine surface sediments taken in the Rhône prodelta (Gulf of Lions, NW Mediterranean).
Buscail, R.   +4 more
core   +3 more sources

Depth-related distribution of a key gene of the tetraether lipid biosynthetic pathway in marine Thaumarchaeota [PDF]

open access: yes, 2014
The distribution of isoprenoid glycerol dialkyl glycerol tetraethers (GDGT) lipids synthesized by Thaumarchaeota has been shown to be temperature-dependent in world oceans.
Schouten, S.   +2 more
core   +1 more source

A New Era for Using Natural Pigments: The Case of the C50 Carotenoid Called Bacterioruberin

open access: yesBiotechnology and Applied Biochemistry, EarlyView.
ABSTRACT Haloarchaea are extremophilic microorganisms belonging to the Archaea domain that require high salt concentrations to live, thus inhabiting ecosystems like salty ponds, salty marshes, or extremely salty lagoons. They are more abundant and widely distributed worldwide than initially expected.
Micaela Giani   +5 more
wiley   +1 more source

Source, transport and fate of soil organic matter inferred from microbial biomarker lipids on the East Siberian Arctic Shelf [PDF]

open access: yesBiogeosciences, 2016
The Siberian Arctic contains a globally significant pool of organic carbon (OC) vulnerable to enhanced warming and subsequent release by both fluvial and coastal erosion processes.
J. Bischoff   +10 more
doaj   +1 more source

Revised calibration of the mbt-cbt paleotemperature proxy based on branched tetraether membrane lipids in surface soils [PDF]

open access: yes, 2012
The MBT-CBT proxy for the reconstruction of paleotemperatures and past soil pH is based on the distribution of branched glycerol dialkyl glycerol tetraether (brGDGT) membrane lipids.
Ballantyne   +51 more
core   +2 more sources

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