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Author (up) Astorga-Elo, M.; Ramirez-Flandes, S.; DeLong, E.F.; Ulloa, O.
Title Genomic potential for nitrogen assimilation in uncultivated members of Prochlorococcus from an anoxic marine zone Type
Year 2015 Publication ISME Journal Abbreviated Journal Isme J.
Volume 9 Issue 5 Pages 1264-1267
Keywords
Abstract Cyanobacteria of the genus Prochlorococcus are the most abundant photosynthetic marine organisms and key factors in the global carbon cycle. The understanding of their distribution and ecological importance in oligotrophic tropical and subtropical waters, and their differentiation into distinct ecotypes, is based on genetic and physiological information from several isolates. Currently, all available Prochlorococcus genomes show their incapacity for nitrate utilization. However, environmental sequence data suggest that some uncultivated lineages may have acquired this capacity. Here we report that uncultivated low-light-adapted Prochlorococcus from the nutrient-rich, low-light, anoxic marine zone (AMZ) of the eastern tropical South Pacific have the genetic potential for nitrate uptake and assimilation. All genes involved in this trait were found syntenic with those present in marine Synechococcus. Genomic and phylogenetic analyses also suggest that these genes have not been aquired recently, but perhaps were retained from a common ancestor, highlighting the basal characteristics of the AMZ lineages within Prochlorococcus.
Address [Astorga-Elo, Marcia; Ramirez-Flandes, Salvador; Ulloa, Osvaldo] Univ Concepcion, Dept Oceanog, Concepcion 4070386, Chile, Email: oulloa@udec.cl
Corporate Author Thesis
Publisher Nature Publishing Group Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1751-7362 ISBN Medium
Area Expedition Conference
Notes WOS:000353354100018 Approved
Call Number UAI @ eduardo.moreno @ Serial 486
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