Oak Seedling Microbiome Assembly Under Climate Warming and Drought

Overview

Journal Environ Microbiome

Date 2024 Aug 28

PMID 39198873

Authors

Daniel Hoefle

Milena Sommer

Birgit Wassermann

Maria Faticov

Demetrio Serra

Gabriele Berg

Ayco J M Tack

Ahmed Abdelfattah

Affiliations

Soon will be listed here.

Abstract

Despite that climate change is currently one of the most pervasive challenges, its effects on the plant-associated microbiome is still poorly studied. The aim of this study was to evaluate the impact of the independent and combinatory effect of climate warming and drought on the microbiome assembly of oak from seed to seedling. In a multifactorial experimental set up, acorns were subjected to different temperatures (15 °C, 20 °C, and 25 °C) and soil moisture levels (drought (15%) and control (60%)) from germination until the seedling stage, after which the bacterial and fungal communities associated to the rhizosphere and phyllosphere were characterized by amplicon sequencing and qPCR. The results showed a stronger effect of temperature on fungal than on bacterial diversity and the effect was more pronounced in the phyllosphere. Under drought condition, temperature had a significantly negative effect on phyllosphere fungal diversity. In the rhizosphere, temperature had a significant effect on the fungal community composition which was primarily caused by species turnover. Regardless of temperature, Actinobacteriota was significantly enriched in drought, a group of bacteria known to increase plant drought tolerance. This study provides new insights into the effect of climate change on the plant microbiome in natural ecosystems.

Citing Articles

Unravelling the microbiome of wild flowering plants: a comparative study of leaves and flowers in alpine ecosystems.

Ramakrishnan D, Jauernegger F, Hoefle D, Berg C, Berg G, Abdelfattah A BMC Microbiol. 2024; 24(1):417.

PMID: 39425049 PMC: 11490174. DOI: 10.1186/s12866-024-03574-0.

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