RuBisCO‐catalyzed CO2 fixation is the main source of organic carbon in the biosphere. This
enzyme is present in all domains of life in different forms (III, II, and I) and its origin goes back …

Elevated CO 2 emissions have substantially altered the worldwide climate, while the
excessive reliance on fossil fuels has exacerbated the energy crisis. Therefore, the …

The oldest and most wide-ranging signal of biological activity (biosignature) on our planet is
the carbon isotope composition of organic materials preserved in rocks. These biosignatures …

Ancestral cyanobacteria are assumed to be prominent primary producers after the Great
Oxidation Event [≈ 2.4 to 2.0 billion years (Ga) ago], but carbon isotope fractionation by …

Contamination with energetic compounds (ECs) is common in military sites and poses a
great risk to the environment and human health. However, its effects on the soil bacterial …

Most microaerophilic Fe (II)-oxidizing bacteria (mFeOB) belonging to the family
Gallionellaceae are autotrophic microorganisms that can use inorganic carbon to drive …

Nature's vital, but notoriously inefficient, CO2-fixing enzyme Rubisco often limits the growth
of photosynthetic organisms including crop species. Form I Rubiscos comprise eight …

The earliest branching cyanobacterium, Gloeobacter, exhibits a number of ancestral traits
including the lack of thylakoids. It occurs epilithically in microbial mats, both subaerially and …

The history of Earth's carbon cycle reflects trends in atmospheric composition convolved with
the evolution of photosynthesis. Fortunately, key parts of the carbon cycle have been …

The dissolved organic carbon (DOC) reservoir plays a critical role in the C cycle of marine
and freshwater environments because of its size and implication in many biogeochemical …