Kyle C. Costa

TL;DR: The most abundant archaeal phylotype was closely related to “Candidatus Nitrosocaldus yellowstonii”, suggesting a role for ammonia oxidation in primary production; however, few other phylotypes could be linked with energy calculations because phylotypes were either related to chemoorganotrophs or were unrelated to known organisms.

TL;DR: It is found that Eha does not function stoichiometrically for methanogenesis, implying that electron bifurcation must operate in vivo, and a substoichiometric requirement for H2 suggests that its role is anaplerotic.

TL;DR: During continuous culture of Methanococcus maripaludis under defined nutrient conditions, growth yields relative to methane production decreased markedly with either H2 excess or formate excess, suggesting that this phenomenon occurs independently of the storage of intracellular carbon or a transcriptional response to methanogenesis.

TL;DR: Several conserved genes that are important for the degradation of three Pseudomonas-derived phenazines are identified, suggesting that soil mycobacteria can catabolize phenazines and thereby protect other organisms against phenazine toxicity suggests that phenazine degradation may influence turnover in situ.