18 The shrimp Rimicaris exoculata (Williams and Rona, 1986) dominates the megafauna of 19 some of the Mid Atlantic ridge hydrothermal vent sites. This species harbors a rich 20 community of bacterial epibionts inside its gill chamber. Literature data indicate that a single 21 16S rRNA phylotype dominates this epibiotic community, and is assumed to be a sulfide22 oxidizing bacteria. However atte...

Abstract Herein, we examined emissions of CH 4 and the community structures methanogenic archaea methanotrophic bacteria in paddy soils subjected to a novel irrigation system, namely continuous sub-irrigation with treated wastewater (TWW). This system has recently been developed by our group effectively reuse TWW for cultivation protein-rich rice. The results showed that, despite not using mine...

Proteobacteria capable of converting the greenhouse gas methane to biomass, energy, and carbon dioxide represent a small but important sink in global methane inventories. Currently, 23 genera of methane oxidizing (methanotrophic) proteobacteria have been described, although many are represented by only a single validly described species. Here we describe a new methanotrophic isolate that shares...

The vision for sewage treatment plants is being revised and they are no longer considered as pollutant removing facilities but rather water resources recovery (WRRFs). However, the newly adopted bioprocesses in WRRFs not fully understood from microbiological kinetic perspectives. Thus, large variations outputs of kinetics-based numerical models evident. In this research, data driven (DDM) propo...

Culturable methanotrophic bacteria (CMB) were studied in the soils of forest and savanna of tropical dry deciduous forest ecosystems employing most probable number (MPN) technique. The spatiotemporal study was conducted at the six sites differing in the soil physicochemical properties and vegetational cover. CMB population was high in the moist sites compared to the dry sites and in sub soil be...

An industrial process for the selective activation of methane under mild conditions would be highly valuable for controlling emissions to the environment and for utilizing vast new sources of natural gas. The only selective catalysts for methane activation and conversion to methanol under mild conditions are methane monooxygenases (MMOs) found in methanotrophic bacteria; however, these enzymes ...

Siboglinid worms are a group of gutless marine annelids which are nutritionally dependent upon endosymbiotic bacteria.1,2 Four major groups of siboglinids are known including vestimentiferans, Osedax spp., frenulates and moniliferans.3-5 Very little is known about the diversity of bacterial endosymbionts associated with frenulate or monoliferan siboglinids. This lack of knowledge is surprising ...

Methane-oxidizing bacteria (methanotrophs) consume a significant but variable fraction of greenhouse-active methane gas produced in wetlands and rice paddies before it can be emitted to the atmosphere. Temporal and spatial dynamics of methanotroph populations in California rice paddies were quantified using phospholipid biomarker analyses in order to evaluate the relative importance of type I a...