Globally consistent response of plant microbiome diversity across hosts and continents to soil nutrients and herbivores

• Autores: Seabloom, Eric; Caldeira, Maria C.; Davies, Kendi F.; Kinkel, Linda; Knops, Johannes M. H.; Komatsu, Kimberly J.; MacDougall, Andrew S.; May, Georgiana; Millican, Michael; Moore, Joslin L.; Perez, Luis Ignacio; Porath Krause, Anita J.; Power, Sally A.; Prober, Suzanne M.; Risch, Anita C.; Stevens, Carly; Borer, Elizabeth
• Año de publicación: 2023
• Idioma: inglés
• Tipo de recurso: artículo
• Materia: Microbiome Diversity; Environmental Gradients; Soil Nutrient Supply; Herbivore Density; Plant-Microbiome Interactions
• Institución: Consejo Nacional de Investigaciones Científicas y Técnicas

All multicellular organisms host a diverse microbiome composed of microbial pathogens, mutualists, and commensals, and changes in microbiome diversity or composition can alter host fitness and function. Nonetheless, we lack a general understanding of the drivers of microbiome diversity, in part because it is regulated by concurrent processes spanning scales from global to local. Global-scale environmental gradients can determine variation in microbiome diversity among sites, however an individual host’s microbiome also may reflect its local micro-environment. We fill this knowledge gap by experimentally manipulating two potential mediators of plant microbiome diversity (soil nutrient supply and herbivore density) at 23 grassland sites spanning global-scale gradients in soil nutrients, climate, and plant biomass. Here we show that leaf-scale microbiome diversity in unmanipulated plots depended on the total microbiome diversity at each site, which was highest at sites with high soil nutrients and plant biomass. We also found that experimentally adding soil nutrients and excluding herbivores produced concordant results across sites, increasing microbiome diversity by increasing plant biomass, which created a shaded microclimate. This demonstration of consistent responses of microbiome diversity across a wide range of host species and environmental conditions suggests the possibility of a general, predictive understanding of microbiome diversity.
Fil: Seabloom, Eric. University of Minnesota; Estados Unidos
Fil: Caldeira, Maria C.. Universidade Nova de Lisboa; Portugal
Fil: Davies, Kendi F.. University of Colorado; Estados Unidos
Fil: Kinkel, Linda. University of Minnesota; Estados Unidos
Fil: Knops, Johannes M. H.. Health And Environmental Sciences Department, Xian Jia; China. Xi’an Jiaotong-Liverpool University; China
Fil: Komatsu, Kimberly J.. Smithsonian Tropical Research Institute; Panamá
Fil: MacDougall, Andrew S.. University of Guelph; Canadá
Fil: May, Georgiana. University of Minnesota; Estados Unidos
Fil: Millican, Michael. University of Minnesota; Estados Unidos
Fil: Moore, Joslin L.. Arthur Rylah Institute for Environmental Research; Australia. Monash University; Australia. University of Melbourne; Australia
Fil: Perez, Luis Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentina. Universidad de Buenos Aires; Argentina
Fil: Porath Krause, Anita J.. University of Minnesota; Estados Unidos
Fil: Power, Sally A.. Hawkesbury Institute for the Environment; Australia
Fil: Prober, Suzanne M.. Commonwealth Scientific And Industrial Research Organisation (csiro);
Fil: Risch, Anita C.. Swiss Federal Institute for Forest, Snow and Landscape Research; Suiza
Fil: Stevens, Carly. Lancaster University; Reino Unido
Fil: Borer, Elizabeth. University of Minnesota; Estados Unidos