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Trichodesmium colonies contain an abundant microbial consortium that is likely to play a role in nutrient cycling within the colony. This study used laboratory cultures of Trichodesmium and two genome‐sequenced strains of bacteria typical of Trichodesmium‐associated microbes to develop an understanding of the cycling of iron, a potentially limiting micronutrient, within Trichodesmium colonies. We...
In most oceanic environments, dissolved nickel (Ni) concentrations are drawn down in surface waters with increasing concentrations at depth, implying a role for biology in the geochemical distribution of Ni. Studies with phytoplankton isolates from the surface ocean have established the biochemical roles of Ni in the assimilation of urea and oxidative defense. To determine if these requirements are...
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