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The lost world of Cuatro Ciénegas Basin, a relictual bacterial niche in a desert oasis. | LitMetric

The lost world of Cuatro Ciénegas Basin, a relictual bacterial niche in a desert oasis.

Elife

Departamento de Ecología Evolutiva, Instituto de Ecología, Universidad Nacional Autónoma de México, Coyoacán, Mexico.

Published: November 2018

AI Article Synopsis

Article Abstract

Barriers to microbial migrations can lead adaptive radiations and increased endemism. We propose that extreme unbalanced nutrient stoichiometry of essential nutrients can be a barrier to microbial immigration over geological timescales. At the oasis in the Cuatro Ciénegas Basin in Mexico, nutrient stoichiometric proportions are skewed given the low phosphorus availability in the ecosystem. We show that this endangered oasis can be a model for a . The ancient niche of extreme unbalanced nutrient stoichiometry favoured survival of ancestral microorganisms. This extreme nutrient imbalance persisted due to environmental stability and low extinction rates, generating a diverse and unique bacterial community. Several endemic clades of invaded the Cuatro Cienegas region in two geological times, the late Precambrian and the Jurassic. Other lineages of , and migrated into the basin in isolated events. Cuatro Ciénegas Basin conservation is vital to the understanding of early evolutionary and ecological processes.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6245727PMC
http://dx.doi.org/10.7554/eLife.38278DOI Listing

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