The fungal collaboration gradient dominates the root economics space in plants

Joana Bergmann, Alexandra Weigelt, Fons Van Der Plas, Daniel C. Laughlin, Thom W. Kuyper, Nathaly Guerrero-Ramirez, Oscar J. Valverde-Barrantes, Helge Bruelheide, Grégoire T. Freschet, Colleen M. Iversen, Jens Kattge, M. Luke McCormack, Ina C. Meier, Matthias C. Rillig, Catherine Roumet, Marina Semchenko, Christopher J. Sweeney, Jasper Van Ruijven, Larry M. York, Liesje Mommer

Research output: Contribution to journalArticlepeer-review

485 Scopus citations

Abstract

Plant economics run on carbon and nutrients instead of money. Leaf strategies aboveground span an economic spectrum from "live fast and die young"to "slow and steady,"but the economy defined by root strategies belowground remains unclear. Here, we take a holistic view of the belowground economy and show that root-mycorrhizal collaboration can short circuit a one-dimensional economic spectrum, providing an entire space of economic possibilities. Root trait data from 1810 species across the globe confirm a classical fast-slow "conservation"gradient but show that most variation is explained by an orthogonal "collaboration"gradient, ranging from "do-it-yourself"resource uptake to "outsourcing"of resource uptake to mycorrhizal fungi. This broadened "root economics space"provides a solid foundation for predictive understanding of belowground responses to changing environmental conditions.

Original languageEnglish
Article numbereaba3756
JournalScience Advances
Volume6
Issue number27
DOIs
StatePublished - Jul 2020

Funding

This paper is a joint effort of the working group sROOT supported by sDiv, the Synthesis Centre of the German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, funded by the German Research Foundation (FZT 118). The sROOT workshops and L.M. were also supported by NWO-Vidi grant 864.14.006. J.B. was supported by DFG grants RI-1815/20-1 and RI 1815/22-1. C.M.I., M.L.M., and FRED were supported by the U.S. Department of Energy's Office of Science, Biological and Environmental Research Program.

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