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Porträttbild på Edith Hammer. Foto.

Edith Hammer

Universitetslektor

Porträttbild på Edith Hammer. Foto.

Hyphal exploration strategies and habitat modification of an arbuscular mycorrhizal fungus in microengineered soil chips

Författare

  • Edith C. Hammer
  • Carlos Arellano-Caicedo
  • Paola Micaela Mafla-Endara
  • E. Toby Kiers
  • Tom Shimizu
  • Pelle Ohlsson
  • Kristin Aleklett

Summary, in English

Arbuscular mycorrhizal fungi (AMF) are considered ecosystem engineers, but the interactions of their mycelium with their immediate surroundings are largely unknown. In this study, we used microfluidic chips, simulating artificial soil structures, to study foraging strategies and habitat modification of Rhizophagus irregularis symbiotically associated to carrot roots. AMF hyphae foraged over long distances in nutrient-void spaces, preferred straight over tortuous passages, anastomosed and showed strong inducement of branching when encountering obstacles. We measured bi-directional transport of cellular content inside active hyphae and documented strategic allocation of biomass within the mycelium via cytoplasm retraction from inefficient paths. R. irregularis modified pore-spaces in the chips by clogging pores with irregularly shaped spores. We suggest that studying AMF hyphal behaviour in spatial settings can explain phenomena reported at bulk scale such as AMF modification of water retention in soils. The use of microfluidic soil chips in AMF research opens up novel opportunities to study their ecophysiology and interactions with both biotic and abiotic factors.

Avdelning/ar

  • Biologiska institutionen
  • Avdelningen för biomedicinsk teknik
  • BECC: Biodiversity and Ecosystem services in a Changing Climate
  • NanoLund: Centre for Nanoscience
  • LU profilområde: Naturbaserade framtidslösningar

Publiceringsår

2024-02

Språk

Engelska

Publikation/Tidskrift/Serie

Fungal Ecology

Volym

67

Dokumenttyp

Artikel i tidskrift

Förlag

Elsevier

Ämne

  • Soil Science

Nyckelord

  • AMF
  • Arbuscular mycorrhizal fungi
  • Behaviour
  • Fungi-on-a-chip
  • Hyphal behaviour
  • Microfluidics
  • Mycorrhizal traits
  • Rhizophagus irregularis
  • Soil chips
  • Soil pore space

Aktiv

Published

Projekt

  • The Soil Chip
  • A window to the soil: Microchips reveal Soil Carbon dynamics

ISBN/ISSN/Övrigt

  • ISSN: 1754-5048