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Leaf bacterial diversity mediates plant diversity and ecosystem function relationships

机译：叶片细菌多样性介导植物多样性与生态系统功能的关系

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摘要

Research on biodiversity and ecosystem functioning has demonstrated links between plant diversity and ecosystem functions such as productivity(1,2). At other trophic levels, the plant microbiome has been shown to influence host plant fitness and function(3,4), and host-associated microbes have been proposed to influence ecosystem function through their role in defining the extended phenotype of host organisms(5,6) However, the importance of the plant microbiome for ecosystem function has not been quantified in the context of the known importance of plant diversity and traits. Here, using a tree biodiversity-ecosystem functioning experiment, we provide strong support for the hypothesis that leaf bacterial diversity is positively linked to ecosystem productivity, even after accounting for the role of plant diversity. Our results also show that host species identity, functional identity and functional diversity are the main determinants of leaf bacterial community structure and diversity. Our study provides evidence of a positive correlation between plant-associated microbial diversity and terrestrial ecosystem productivity, and a new mechanism by which models of biodiversity-ecosystem functioning relationships can be improved.
机译：对生物多样性和生态系统功能的研究表明，植物多样性与生态系统功能（如生产力）之间存在联系（1,2）。在其他营养级别，已证明植物微生物组会影响宿主植物的适应性和功能（3,4），并且已提出与宿主相关的微生物通过其在定义宿主生物的扩展表型中的作用来影响生态系统功能（5， 6）然而，在已知的植物多样性和性状重要性的背景下，尚未量化植物微生物组对生态系统功能的重要性。在这里，通过使用树木生物多样性-生态系统功能实验，即使考虑了植物多样性的作用，我们也为叶细菌多样性与生态系统生产力正相关的假设提供了有力支持。我们的结果还表明，宿主物种的同一性，功能同一性和功能多样性是叶片细菌群落结构和多样性的主要决定因素。我们的研究提供了与植物相关的微生物多样性与陆地生态系统生产力之间正相关的证据，并通过一种新的机制可以改善生物多样性与生态系统功能关系的模型。

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  • 来源
    《Nature》 |2017年第7656期|145-147|共3页
  • 作者

    Laforest-Lapointe Isabelle; Paquette Alain; Messier Christian; Kembel Steven W.;

  • 作者单位

    Univ Quebec, Dept Sci Biol, Montreal, PQ H3C 3P8, Canada|Univ Quebec, Ctr Etude Foret, Montreal, PQ H2X 3Y7, Canada;

    Univ Quebec, Dept Sci Biol, Montreal, PQ H3C 3P8, Canada|Univ Quebec, Ctr Etude Foret, Montreal, PQ H2X 3Y7, Canada;

    Univ Quebec, Dept Sci Biol, Montreal, PQ H3C 3P8, Canada|Univ Quebec, Ctr Etude Foret, Montreal, PQ H2X 3Y7, Canada|Univ Quebec Outaouais, Inst Sci Foret Temp, Ripon, PQ J0V 1V0, Canada;

    Univ Quebec, Dept Sci Biol, Montreal, PQ H3C 3P8, Canada|Univ Quebec, Ctr Etude Foret, Montreal, PQ H2X 3Y7, Canada;

  • 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);
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  • 正文语种 eng
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