Mobilization, methylation, and demethylation of mercury in a paddy soil under systematic redox changes
J Wang, SM Shaheen, M Jing… - … science & technology, 2021 - ACS Publications
Methylmercury (MeHg) contamination in paddy fields is a significant environmental issue
globally since over half of the population of our planet consumes rice. MeHg is a neurotoxin …
globally since over half of the population of our planet consumes rice. MeHg is a neurotoxin …
Anaerobic oxidation of methane in paddy soil: Role of electron acceptors and fertilization in mitigating CH4 fluxes
The anaerobic oxidation of methane (AOM) in marine ecosystems is ubiquitous and largely
coupled to sulfate reduction. In contrast, the role of AOM in terrestrial environments and the …
coupled to sulfate reduction. In contrast, the role of AOM in terrestrial environments and the …
Biogeochemical processes in canga ecosystems: Armoring of iron ore against erosion and importance in iron duricrust restoration in Brazil
Supergene enriched iron ore deposits in Brazil are typically blanketed by goethite-cemented
breccias that form a protective duricrust known as canga. Moderately hard, well …
breccias that form a protective duricrust known as canga. Moderately hard, well …
Micro/nanoscale bone char alleviates cadmium toxicity and boosts rice growth via positively altering the rhizosphere and endophytic microbial community
This present study investigated pork bone-derived biochar as a promising amendment to
reduce Cd accumulation and alleviate Cd-induced oxidative stress in rice. Micro/nanoscale …
reduce Cd accumulation and alleviate Cd-induced oxidative stress in rice. Micro/nanoscale …
Microbial metagenomes from three aquifers in the Fennoscandian shield terrestrial deep biosphere reveal metabolic partitioning among populations
Microorganisms in the terrestrial deep biosphere host up to 20% of the earth's biomass and
are suggested to be sustained by the gases hydrogen and carbon dioxide. A metagenome …
are suggested to be sustained by the gases hydrogen and carbon dioxide. A metagenome …
Transformation of redox-sensitive to redox-stable iron-bound phosphorus in anoxic lake sediments under laboratory conditions
L Heinrich, M Rothe, B Braun, M Hupfer - Water Research, 2021 - Elsevier
Phosphorus (P) can be retained in mineral association with ferrous iron (Fe) as vivianite, Fe
(II) 3 (PO 4) 2∙ 8 H 2 O, in lake sediments. The mineral is formed and remains stable under …
(II) 3 (PO 4) 2∙ 8 H 2 O, in lake sediments. The mineral is formed and remains stable under …
Contribution of microaerophilic iron (II)-oxidizers to iron (III) mineral formation
Neutrophilic microbial aerobic oxidation of ferrous iron (Fe (II)) is restricted to pH-
circumneutral environments characterized by low oxygen where microaerophilic Fe (II) …
circumneutral environments characterized by low oxygen where microaerophilic Fe (II) …
Nitrate-dependent iron oxidation: a potential Mars metabolism
This work considers the hypothetical viability of microbial nitrate-dependent Fe2+ oxidation
(NDFO) for supporting simple life in the context of the early Mars environment. This draws on …
(NDFO) for supporting simple life in the context of the early Mars environment. This draws on …
[HTML][HTML] Frutexites-like structures formed by iron oxidizing biofilms in the continental subsurface (Äspö Hard Rock Laboratory, Sweden)
Stromatolitic iron-rich structures have been reported from many ancient environments and
are often described as Frutexites, a cryptic microfossil. Although microbial formation of such …
are often described as Frutexites, a cryptic microfossil. Although microbial formation of such …
Organic remains in late Palaeoproterozoic granular iron formations and implications for the origin of granules
Toward the end of the Palaeoproterozoic era, over 10 9 billion tonnes of banded (BIF) and
granular (GIF) iron formations were deposited on continental platforms. Granules in iron …
granular (GIF) iron formations were deposited on continental platforms. Granules in iron …