Physiology and molecular phylogeny of coexisting Prochlorococcus ecotypes

Article Abstract:

Prochlorococcus is a cyanobacterium which is found in subtropical and tropical oceanic regions where it is the main oxygenic phototroph. It is distributed across a broad depth range, with a wide variety of light intensities. There is evidence to support a hypothesis that genetically different populations coexist and are adapted to different light intensity levels. This co-existence of multiple ecotypes allows populations to survive as a whole across a wider range of environmental conditions than if the population were homogeneous.

Biological diversity, Biodiversity, Marine ecology

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Isolation of an autotrophic ammonia-oxidizing marine archaeon

Article Abstract:

The isolation of a marine crenarchaeote that grows chemolithoautotrophically by aerobically oxidizing ammonia to nitrite, the first observation of nitrification in the Archaea is reported. The autotrophic metabolism of this isolate, and its close phylogenetic relationship to environmental marine crenarchaeal sequences, suggests that nitrifying marine Crenarchaeota may be important to global carbon and nitrogen cycles.

United States, Nitrogenous Fertilizer Manufacturing, Nitrogenous fertilizers, Ammonia, Genetic aspects, Archaeabacteria, Nitrites, Archaea

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Cyanophages infecting the oceanic cyanobacterium Prochlorococcus

Article Abstract:

Prochlorococcus is described as a dominant photograph in the topical and subtropical oceans that accounts for the half of the photosynthetic biomass. The isolation of Cyanophages that infect Prochlorococcus is discussed.

Risk factors, Ocean, Oceans, Bacteria, Photosynthetic, Photosynthetic bacteria

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