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Leaf bacterial diversity mediates plant diversity and ecosystem function relationships [Nature]

par Frédéric Magné - publié le

Research on biodiversity and ecosystem functioning has demonstrated links between plant diversity and ecosystem functions such as productivity1, 2. At other trophic levels, the plant microbiome has been shown to influence host plant fitness and function3, 4, and host-associated microbes have been proposed to influence ecosystem function through their role in defining the extended phenotype of host organisms5, 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. (...)

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