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Leaf bacterial diversity mediates plant diversity and ecosystem function relationships.

Isabelle Laforest-Lapointe1,2, Alain Paquette1,2, Christian Messier1,2,3

  • 1Département des Sciences Biologiques, Université du Québec à Montréal, Montréal H3C 3P8, Québec, Canada.

Nature
|May 25, 2017
PubMed
Summary
This summary is machine-generated.

Leaf bacterial diversity positively impacts ecosystem productivity, independent of plant diversity. This highlights the crucial role of plant microbiomes in ecosystem functioning and offers new insights for biodiversity models.

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Area of Science:

  • Ecology
  • Microbiology
  • Environmental Science

Background:

  • Biodiversity and ecosystem functioning research shows plant diversity influences productivity.
  • Plant microbiomes affect host plant fitness and function, potentially influencing ecosystem processes.
  • The role of plant microbiomes in ecosystem function remains underquantified relative to plant diversity.

Purpose of the Study:

  • To quantify the importance of leaf bacterial diversity for ecosystem productivity.
  • To investigate the relationship between plant diversity and leaf bacterial diversity.
  • To identify drivers of leaf bacterial community structure and diversity.

Main Methods:

  • Utilized a tree biodiversity-ecosystem functioning experiment.
  • Analyzed leaf bacterial diversity and its correlation with ecosystem productivity.
  • Assessed the influence of plant diversity, species identity, and functional traits.

Main Results:

  • Leaf bacterial diversity is positively linked to ecosystem productivity, even when controlling for plant diversity.
  • Host plant species identity, functional identity, and functional diversity significantly determine leaf bacterial community structure.
  • A positive correlation exists between plant-associated microbial diversity and terrestrial ecosystem productivity.

Conclusions:

  • Leaf bacterial diversity is a significant driver of ecosystem productivity.
  • Plant traits and identity are key factors shaping plant-associated microbial communities.
  • Incorporating microbial diversity can enhance models of biodiversity-ecosystem functioning relationships.