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首页> 外文期刊>Estuarine Coastal and Shelf Science >Assessing variation in bacterial composition between the rhizospheres of two mangrove tree species
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Assessing variation in bacterial composition between the rhizospheres of two mangrove tree species

机译：评估两种红树林树种根际之间细菌组成的变化

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摘要

This study aimed to determine to what extent roots from the common mangrove tree species Avicennia schaueriana and Laguncularia racemosa are able to impose a selective force on the composition of sediment bacterial communities in mangrove intertidal sediments using barcoded pyrosequencing analysis of 16S rRNA gene fragments (V4 hyper-variable region). The novel results showed that root systems of A. schaueriana and L. racemosa are associated with increased bacterial dominance, lower richness and compositional shifts of sediment bacterial communities. The proportion of OTUs (operational taxonomc units) belonging to the orders Rhizobiales and Vibrionales were enriched in rhizosphere samples from both plant species and sulphur-reducing bacteria (SRB) belonging to the order Desulfobacterales and Desulfur-omonadales were enriched in the rhizosphere of A. schaueriana. In addition, Clostridium and Vibrio populations were more abundant in different mangrove rhizospheres. A. schaueriana and L. racemosa roots appear to be able to impose a selective force on the composition of mangrove sediment bacterial communities and this phenomenon appears to be plant species specific. Our findings provide new insights into the potential ecological roles of bacterial guilds in plant-microbe interactions and may aid rhizoengin-eering approaches for replanting impacted mangrove areas.
机译：这项研究旨在确定常见的红树林树种Avicennia schaueriana和Laguncularia racemosa的根能够使用条形码16S rRNA基因片段的焦磷酸测序分析对红树林潮间带沉积物中的沉积物细菌群落组成施加选择力（V4 hyper -可变区域）。新结果表明，A。schaueriana和L. racemosa的根系与增加的细菌优势度，较低的丰富度和沉积物细菌群落的组成变化有关。根瘤菌和振动弧菌属的OTUs（操作分类单元）的比例在植物物种和脱硫细菌（SRB）的根际样品中都富集，而脱硫细菌属（Desulfobacterales和Desulfur-omonadales）在A的根际中都富集了。 schaueriana。此外，在不同的红树林根际中梭状芽胞杆菌和弧菌的种群更为丰富。 schaueriana和L. racemosa根似乎能够对红树林沉积物细菌群落的组成施加选择力，这种现象似乎是植物物种特有的。我们的发现为细菌协会在植物与微生物的相互作用中的潜在生态作用提供了新的见解，并可能有助于根瘤菌定向方法重新种植受影响的红树林地区。

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  • 来源
    《Estuarine Coastal and Shelf Science》 |2014年第20期|40-45|共6页
  • 作者

    Newton C.M. Gomes; Daniel F.R. Cleary; Ana C.C. Pires; Adelaide Almeida; Angela Cunha; Leda C.S. Mendonca-Hagler; Kornelia Smalla;

  • 作者单位

    Department of Biology and CESAM, Universidade de Aveiro, Campus Universitario de Santiago, 3810-193 Aveiro, Portugal;

    Department of Biology and CESAM, Universidade de Aveiro, Campus Universitario de Santiago, 3810-193 Aveiro, Portugal;

    Department of Biology and CESAM, Universidade de Aveiro, Campus Universitario de Santiago, 3810-193 Aveiro, Portugal;

    Department of Biology and CESAM, Universidade de Aveiro, Campus Universitario de Santiago, 3810-193 Aveiro, Portugal;

    Department of Biology and CESAM, Universidade de Aveiro, Campus Universitario de Santiago, 3810-193 Aveiro, Portugal;

    Laboratory of Taxonomy and Ecology of Microorganisms, Institute of Microbiology, CCS, UFRJ, 21941-590 Rio de Janeiro, Brazil;

    Julius Kuehn-Institut (JKI), Federal Research Centre for Cultivated Plants, 38104 Braunschweig, Germany;

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  • 正文语种 eng
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  • 关键词

    Avicennia schaueriana; Laguncularia racemosa; mangrove; rhizosphere; sediment; bacteria; pyrosequencing;

    机译：刺槐紫花紫薇;红树林;根际沉淀;菌;焦磷酸测序;

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