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Effect of Dust Storms on the Atmospheric Microbiome in the Eastern Mediterranean

机译：沙尘暴对东地中海大气微生物组的影响

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摘要

We evaluated the impact of Saharan dust storms on the local airborne microbiome in a city in the Eastern Mediterranean area. Samples of particles with diameter less than 10 μm were collected during two spring seasons on both dusty and nondusty days. DNA was extracted, and partial 16S rRNA gene amplicons were sequenced using the Illumina platform. Bioinfbrmatic analysis showed the effect of dust events on the diversity of the atmospheric microbiome. The relative abundance of desert soil-associated bacteria increased during dust events, while the relative abundance of anthropogenic-influenced taxa decreased. Quantitative polymerase chain reaction measurements of selected clinically significant antibiotic resistance genes (ARGs) showed that their relative abundance decreased during dust events. The ARG profiles on dust-free days were similar to those in aerosol collected in a poultry house, suggesting a strong agricultural influence on the local ambient profiles. We conclude that dust storms enrich the ambient airborne microbiome with new soil-derived bacteria that disappear as the dust settles, suggesting that the bacteria are transported attached to the dust particles. Dust storms do not seem to be an important vector for transport of probed ARGs.
机译：我们评估了撒哈拉沙尘暴对东部地中海地区城市中本地空气传播微生物组的影响。在两个多雨的春季和尘土飞扬的日子里，在两个春季采集直径小于10μm的颗粒样品。提取DNA，并使用Illumina平台对部分16S rRNA基因扩增子进行测序。生物病原学分析表明，尘埃事件对大气微生物组多样性的影响。尘埃事件期间，沙漠土壤相关细菌的相对丰度增加，而人为影响的分类单元的相对丰度降低。选定的临床上重要的抗生素抗性基因（ARG）的定量聚合酶链反应测量结果显示，在粉尘事件期间，它们的相对丰度降低了。无尘天的ARG曲线与禽舍中收集的气溶胶相似，表明农业对当地环境轮廓有很强的影响。我们得出的结论是，沙尘暴使周围的空气传播微生物组中充满了新的土壤来源的细菌，这些细菌会随着尘埃的沉降而消失，这表明细菌是附着在尘埃颗粒上的。沙尘暴似乎并不是探测到的ARG转运的重要媒介。

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  • 来源
    《Environmental Science & Technology》 |2016年第8期|4194-4202|共9页
  • 作者

    Yinon Mazar; Eddie Cytryn; Yigal Erel; Yinon Rudich;

  • 作者单位

    Department of Earth and Planetary Sciences, Weizmann Institute of Science, Rehovot 76100, Israel;

    Institute of Soil, Water and Environmental Sciences, The Volcani Center, Agriculture Research Organization, Bet Dagan 50250, Israel;

    The Fredy and Nadine Herrmann Institute of Earth Sciences, The Hebrew University of Jerusalem, Jerusalem 91904, Israel;

    Department of Earth and Planetary Sciences, Weizmann Institute of Science, Rehovot 76100, Israel;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
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