<?xml version='1.0' encoding='utf-8'?>
<oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:contributor>Alina M. Ebling</dc:contributor>
  <dc:contributor>William M. Landing</dc:contributor>
  <dc:contributor>Jessica L. Joyner</dc:contributor>
  <dc:contributor>Keri M. Kemp</dc:contributor>
  <dc:contributor>Dale W. Griffin</dc:contributor>
  <dc:contributor>Erin K. Lipp</dc:contributor>
  <dc:creator>Jason R. Westrich</dc:creator>
  <dc:date>2016</dc:date>
  <dc:description>&lt;p&gt;&lt;i&gt;Vibrio&lt;/i&gt;&lt;span&gt;&amp;nbsp;is a ubiquitous genus of marine bacteria, typically comprising a small fraction of the total microbial community in surface waters, but capable of becoming a dominant taxon in response to poorly characterized factors. Iron (Fe), often restricted by limited bioavailability and low external supply, is an essential micronutrient that can limit&amp;nbsp;&lt;/span&gt;&lt;i&gt;Vibrio&lt;/i&gt;&lt;span&gt;&amp;nbsp;growth.&amp;nbsp;&lt;/span&gt;&lt;i&gt;Vibrio&lt;/i&gt;&lt;span&gt;&amp;nbsp;species have robust metabolic capabilities and an array of Fe-acquisition mechanisms, and are able to respond rapidly to nutrient influx, yet&amp;nbsp;&lt;/span&gt;&lt;i&gt;Vibrio&lt;/i&gt;&lt;span&gt;&amp;nbsp;response to environmental pulses of Fe remains uncharacterized. Here we examined the population growth of&amp;nbsp;&lt;/span&gt;&lt;i&gt;Vibrio&lt;/i&gt;&lt;span&gt;after natural and simulated pulses of atmospherically transported Saharan dust, an important and episodic source of Fe to tropical marine waters. As a model for opportunistic bacterial heterotrophs, we demonstrated that&amp;nbsp;&lt;/span&gt;&lt;i&gt;Vibrio&lt;/i&gt;&lt;span&gt;&amp;nbsp;proliferate in response to a broad range of dust-Fe additions at rapid timescales. Within 24 h of exposure, strains of&amp;nbsp;&lt;/span&gt;&lt;i&gt;Vibrio cholerae&lt;/i&gt;&lt;span&gt;&amp;nbsp;and&amp;nbsp;&lt;/span&gt;&lt;i&gt;Vibrio alginolyticus&lt;/i&gt;&lt;span&gt;&amp;nbsp;were able to directly use Saharan dust&amp;ndash;Fe to support rapid growth. These findings were also confirmed with in situ field studies; arrival of Saharan dust in the Caribbean and subtropical Atlantic coincided with high levels of dissolved Fe, followed by up to a 30-fold increase of culturable&amp;nbsp;&lt;/span&gt;&lt;i&gt;Vibrio&lt;/i&gt;&lt;span&gt;&amp;nbsp;over background levels within 24 h. The relative abundance of&amp;nbsp;&lt;/span&gt;&lt;i&gt;Vibrio&lt;/i&gt;&lt;span&gt;&amp;nbsp;increased from &amp;sim;1 to &amp;sim;20% of the total microbial community. This study, to our knowledge, is the first to describe&amp;nbsp;&lt;/span&gt;&lt;i&gt;Vibrio&lt;/i&gt;&lt;span&gt;&amp;nbsp;response to Saharan dust nutrients, having implications at the intersection of marine ecology, Fe biogeochemistry, and both human and environmental health.&lt;/span&gt;&lt;/p&gt;</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>10.1073/pnas.1518080113</dc:identifier>
  <dc:language>en</dc:language>
  <dc:publisher>PNAS</dc:publisher>
  <dc:title>Saharan dust nutrients promote Vibrio bloom formation in marine surface waters</dc:title>
  <dc:type>article</dc:type>
</oai_dc:dc>