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Bacteria could help ectomycorrhizae establishment under climate variations.

Francisca Reis1, Alexandre P Magalhães1, Rui M Tavares1

  • 1BioSystems & Integrative Sciences Institute (BioISI), Plant Functional Biology Centre, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal.

Mycorrhiza
|March 30, 2021
PubMed
Summary
This summary is machine-generated.

Beneficial soil microbes, including ectomycorrhizal fungi (ECMF) and mycorrhiza helper bacteria (MHB), enhance cork oak drought resilience. Specific microbial consortia, like Russula/Burkholderaceae, are key for forest sustainability in arid climates.

Keywords:
Cork oakEctomycorrhizaeMycorrhiza helper bacteriaSymbiotic relation

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Area of Science:

  • Ecology
  • Microbiology
  • Forestry

Background:

  • The rhizosphere microbiome is crucial for plant drought protection.
  • Ectomycorrhizal fungi (ECMF) and mycorrhiza helper bacteria (MHB) form symbiotic relationships that enhance host plant fitness and drought acclimation.
  • Cork oak (Quercus suber L.) forests face challenges in adapting to climate change, particularly drought.

Purpose of the Study:

  • To investigate the interactions between ECMF and MHB communities in cork oak forests.
  • To correlate these microbial communities with climatic factors.
  • To identify microbial consortia that contribute to cork oak drought resilience and forest sustainability.

Main Methods:

  • Cross-linking and correlation analysis of ECMF and MHB communities in cork oak stands.
  • Identification of dominant ECMF (Cenococcum, Russula, Tuber) and MHB (Bacillus, Burkholderia, Streptomyces) genera.
  • Integration of microbial data to identify key consortia.

Main Results:

  • Two distinct microbial consortia were identified: Lactarius/Bacillaceae and Russula/Burkholderaceae.
  • These two consortia exhibited a negative interaction.
  • The Russula/Burkholderaceae consortium showed a potentially important role in cork oak forest sustainability in arid environments, contrasting with the lower drought adaptation of Lactarius/Bacillaceae.

Conclusions:

  • Microbial consortia, particularly Russula/Burkholderaceae, play a vital role in the resilience of cork oak forests to drought and climate change.
  • Understanding these symbiotic microbial interactions is essential for sustainable forest management in changing climatic conditions.
  • The identified consortia offer potential targets for enhancing forest adaptation strategies.