Mycorrhizal Fungi Respond to Resource Inequality by Moving Phosphorus from Rich to Poor Patches across Networks

Matthew D. Whiteside, Gijsbert D.A. Werner, Victor E.A. Caldas, Anouk van't Padje, Simon E. Dupin, Bram Elbers, Milenka Bakker, Gregory A.K. Wyatt, Malin Klein, Mark A. Hink, Marten Postma, Bapu Vaitla, Ronald Noë, Thomas S. Shimizu, Stuart A. West, E. Toby Kiers

Research output: Contribution to JournalArticleAcademicpeer-review

Abstract

The world’s ecosystems are characterized by an unequal distribution of resources [1]. Trade partnerships between organisms of different species—mutualisms—can help individuals cope with such resource inequality [2, 3, 4]. Trade allows individuals to exchange commodities they can provide at low cost for resources that are otherwise impossible or more difficult to access [5, 6]. However, as resources become increasingly patchy in time or space, it is unknown how organisms alter their trading strategies [7, 8]. Here, we show how a symbiotic fungus mediates trade with a host root in response to different levels of resource inequality across its network. We developed a quantum-dot-tracking technique to quantify phosphorus-trading strategies of arbuscular mycorrhizal fungi simultaneously exposed to rich and poor resource patches. By following fluorescent nanoparticles of different colors across fungal networks, we determined where phosphorus was hoarded, relocated, and transferred to plant hosts. We found that increasing exposure to inequality stimulated trade. Fungi responded to high resource variation by (1) increasing the total amount of phosphorus distributed to host roots, (2) decreasing allocation to storage, and (3) differentially moving resources within the network from rich to poor patches. Using single-particle tracking and high-resolution video, we show how dynamic resource movement may help the fungus capitalize on value differences across the trade network, physically moving resources to areas of high demand to gain better returns. Such translocation strategies can help symbiotic organisms cope with exposure to resource inequality.

Original languageEnglish
Pages (from-to)2043-2050.e8
JournalCurrent Biology
Volume29
Issue number12
DOIs
Publication statusPublished - 17 Jun 2019

Fingerprint

Fungi
Phosphorus
mycorrhizal fungi
phosphorus
fungi
commodity exchange
organisms
Quantum Dots
quantum dots
Nanoparticles
Ecosystem
nanoparticles
Color
Ecosystems
Semiconductor quantum dots
Costs and Cost Analysis
host plants
ecosystems
color
Costs

Keywords

  • arbuscular mycorrhizae
  • biological markets
  • conflict
  • cooperation
  • economics
  • hoarding
  • inequality
  • mutualism
  • quantum dots
  • symbiosis

Cite this

Whiteside, Matthew D. ; Werner, Gijsbert D.A. ; Caldas, Victor E.A. ; van't Padje, Anouk ; Dupin, Simon E. ; Elbers, Bram ; Bakker, Milenka ; Wyatt, Gregory A.K. ; Klein, Malin ; Hink, Mark A. ; Postma, Marten ; Vaitla, Bapu ; Noë, Ronald ; Shimizu, Thomas S. ; West, Stuart A. ; Kiers, E. Toby. / Mycorrhizal Fungi Respond to Resource Inequality by Moving Phosphorus from Rich to Poor Patches across Networks. In: Current Biology. 2019 ; Vol. 29, No. 12. pp. 2043-2050.e8.
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Whiteside, MD, Werner, GDA, Caldas, VEA, van't Padje, A, Dupin, SE, Elbers, B, Bakker, M, Wyatt, GAK, Klein, M, Hink, MA, Postma, M, Vaitla, B, Noë, R, Shimizu, TS, West, SA & Kiers, ET 2019, 'Mycorrhizal Fungi Respond to Resource Inequality by Moving Phosphorus from Rich to Poor Patches across Networks' Current Biology, vol. 29, no. 12, pp. 2043-2050.e8. https://doi.org/10.1016/j.cub.2019.04.061

Mycorrhizal Fungi Respond to Resource Inequality by Moving Phosphorus from Rich to Poor Patches across Networks. / Whiteside, Matthew D.; Werner, Gijsbert D.A.; Caldas, Victor E.A.; van't Padje, Anouk; Dupin, Simon E.; Elbers, Bram; Bakker, Milenka; Wyatt, Gregory A.K.; Klein, Malin; Hink, Mark A.; Postma, Marten; Vaitla, Bapu; Noë, Ronald; Shimizu, Thomas S.; West, Stuart A.; Kiers, E. Toby.

In: Current Biology, Vol. 29, No. 12, 17.06.2019, p. 2043-2050.e8.

Research output: Contribution to JournalArticleAcademicpeer-review

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