Pseudoxylaria as stowaway of the fungus-growing termite nest: Interaction asymmetry between Pseudoxylaria, Termitomyces and free-living relatives.

A.A. Visser, P.W. Kooij, A.J.M. Debets, T.W. Kuyper, D.K. Aanen

Research output: Contribution to journalArticleAcademicpeer-review

27 Citations (Scopus)

Abstract

Though inconspicuous in healthy nests, Pseudoxylaria species are almost always present and overgrow deteriorating fungus-growing termite gardens. Whether these fungi are detrimental to the fungus-garden, benign, or even beneficial is unclear. We hypothesize that Pseudoxylaria is a stowaway that practices a sit-and-wait strategy to survive in the termite nest. Using isolates from three different termite genera to test our hypothesis, we compared Pseudoxylaria’s growth on 40 carbon sources with that of Termitomyces and tested its interaction with Termitomyces. The C-source use of both fungi largely overlapped, indicating potential for competition. One-to-one interactions between Pseudoxylaria, Termitomyces and free-living relatives showed that Pseudoxylaria and Termitomyces strains interacted differently with each other than with each other’s free-living relatives. Both fungi grew less together than when growing alone, confirming that they compete. Pseudoxylaria was more strongly inhibited by Termitomyces than free-living Xylariaceae were. The results suggest that the symbiotic lifestyle adopted by Pseudoxylaria goes together with reduced antagonism towards Termitomyces, consistent with Pseudoxylaria being a stowaway.
Original languageEnglish
Pages (from-to)322-332
JournalFungal Ecology
Volume4
Issue number5
DOIs
Publication statusPublished - 2011

Keywords

  • ant-microbe symbiosis
  • odontotermes-formosanus
  • mycelial interactions
  • volatile production
  • major workers
  • xylaria
  • macrotermitinae
  • evolution
  • endophytes
  • isoptera

Fingerprint Dive into the research topics of 'Pseudoxylaria as stowaway of the fungus-growing termite nest: Interaction asymmetry between Pseudoxylaria, Termitomyces and free-living relatives.'. Together they form a unique fingerprint.

Cite this