Ebru L. Aydogan, Gerald Moser, Christoph Müller, Peter Kämpfer, Stefanie P. Glaeser
Abstract
Global warming is currently a much discussed topic with as yet largely unexplored consequences for agro-ecosystems. Little is known about the warming effect on the bacterial microbiota inhabiting the plant surface (phyllosphere), which can have a strong impact on plant growth and health, as well as on plant diseases and colonization by human pathogens. The aim of this study was to investigate the effect of moderate surface warming on the diversity and composition of the bacterial leaf microbiota of the herbaceous plantGalium album. Leaves were collected from four control and four surface warmed (+2°C) plots located at the field site of the Environmental Monitoring and Climate Impact Research Station Linden in Germany over a 6-year period. Warming had no effect on the concentration of total number of cells attached to the leaf surface as counted by Sybr Green I staining after detachment, but changes in the diversity and phylogenetic composition of the bacterial leaf microbiota analyzed by bacterial 16S rRNA gene Illumina amplicon sequencing were observed. The bacterial phyllosphere microbiota were dominated byProteobacteria,Bacteroidetes, andActinobacteria. Warming caused a significant higher relative abundance of members of theGammaproteobacteria,Actinobacteria, andFirmicutes, and a lower relative abundance of members of theAlphaproteobacteriaandBacteroidetes. Plant beneficial bacteria likeSphingomonasspp. andRhizobiumspp. occurred in significantly lower relative abundance in leaf samples of warmed plots. In contrast, several members of theEnterobacteriaceae, especiallyEnterobacterandErwinia, and other potential plant or human pathogenic genera such asAcinetobacterand insect-associatedBuchneraandWolbachiaspp. occurred in higher relative abundances in the phyllosphere samples from warmed plots. This study showed for the first time the long-term impact of moderate (+2°C) surface warming on the phyllosphere microbiota on plants. A reduction of beneficial bacteria and an enhancement of potential pathogenic bacteria in the phyllosphere of plants may indicate that this aspect of the ecosystem which has been largely neglected up till now, can be a potential risk for pathogen transmission in agro-ecosystems in the near future.
This research output has an Altmetric Attention Score of 4. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 25 January 2022.
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#7,686,710
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Altmetric has tracked 23,549,388 research outputs across all sources so far. This one has received more attention than most of these and is in the 67th percentile.
So far Altmetric has tracked 26,036 research outputs from this source. They typically receive a little more attention than average, with a mean Attention Score of 6.4. This one has gotten more attention than average, scoring higher than 67% of its peers.
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We're also able to compare this research output to 554 others from the same source and published within six weeks on either side of this one. This one has gotten more attention than average, scoring higher than 54% of its contemporaries.
