Common garden experiments disentangle plant genetic and environmental contributions to ectomycorrhizal fungal community structure

Adair Patterson, Lluvia Flores-Rentería, Amy Whipple, Thomas Whitham, Catherine Gehring

Research output: Contribution to journalArticle

9 Scopus citations

Abstract

The interactions among climate change, plant genetic variation and fungal mutualists are poorly understood, but probably important to plant survival under drought. We examined these interactions by studying the ectomycorrhizal fungal (EMF) communities of pinyon pine seedlings (Pinus edulis) planted in a wildland ecosystem experiencing two decades of climate change-related drought. We established a common garden containing P. edulis seedlings of known maternal lineages (drought tolerant, DT; drought intolerant, DI), manipulated soil moisture and measured EMF community structure and seedling growth. Three findings emerged: EMF community composition differed at the phylum level between DT and DI seedlings, and diversity was two-fold greater in DT than in DI seedlings. EMF communities of DT seedlings did not shift with water treatment and were dominated by an ascomycete, Geopora sp. By contrast, DI seedlings shifted to basidiomycete dominance with increased moisture, demonstrating a lineage by environment interaction. DT seedlings grew larger than DI seedlings in high (28%) and low (50%) watering treatments. These results show that inherited plant traits strongly influence microbial communities, interacting with drought to affect seedling performance. These interactions and their potential feedback effects may influence the success of trees, such as P. edulis, in future climates.

Original languageEnglish (US)
Pages (from-to)493-502
Number of pages10
JournalNew Phytologist
Volume221
Issue number1
DOIs
StatePublished - Jan 2019

Keywords

  • Pinus edulis
  • climate change
  • common garden
  • drought
  • ectomycorrhiza
  • genetics by environment interaction

ASJC Scopus subject areas

  • Physiology
  • Plant Science

Fingerprint Dive into the research topics of 'Common garden experiments disentangle plant genetic and environmental contributions to ectomycorrhizal fungal community structure'. Together they form a unique fingerprint.

  • Cite this