Sentences with phrase «photosynthetic cyanobacteria»

The emergence of photosynthetic cyanobacteria (named for their verdant hue, which comes from chlorophyll) defined the next two billion years, and banished the «methanogen» microbes to dark places where oxygen could not go — subterranean caverns, deep muds, and other smothered environments where they still exist to this day.

The team presents new isotopic data showing that a burst of oxygen production by photosynthetic cyanobacteria temporarily increased oxygen concentrations in Earth's atmosphere.

«To me this is exciting because you have such abundant photosynthetic cyanobacteria in the ocean,» said Feng Chen.

Since the 1950s, biologists have known that photosynthetic cyanobacteria make microcompartments, called carboxysomes, which house an important photosynthesis enzyme.

They found an unexpectedly high degree of sharing and exchange of genetic material between the tiny, green, photosynthetic cyanobacteria Synechococcus, which are abundant in these scalding, inhospitable environments.

It does contain a modicum of truth, however, in that the largest volume of stromatolitic formations was likely formed by biogenic processes involving photosynthetic cyanobacteria.

The nitrogen - eaters belong to two families of photosynthetic cyanobacteria and a distantly related proteobacteria group, the researchers report in the 9 August issue of Nature.

However, a new picture is emerging: Oxygen production by photosynthetic cyanobacteria may have initiated as early as 3 billion years ago, with oxygen concentrations in the atmosphere potentially rising and falling episodically over many hundreds of millions of years, reflecting the balance between its varying photosynthetic production and its consumption through reaction with reduced compounds such as hydrogen gas.

Now researchers including Peter Swart from the University of Miami's Rosenstiel School of Marine and Atmospheric Science in Florida are showing that photosynthetic cyanobacteria may actually have done much of the construction.

The best studied belongs to photosynthetic cyanobacteria: other microbes, like E. coli, don't carry clocks at all, says Pamela Silver at Harvard.

Endosymbiotic theory posits a later parallel origin of the chloroplasts; a cell ate a photosynthetic cyanobacterium and failed to digest it.

This enzyme is very common, and it can be found not only in photosynthetic cyanobacteria, but also in pathogenic bacteria and plant chloroplasts.