Interspecific Plant Interactions Reflected in Soil Bacterial Community Structure and Nitrogen Cycling in Primary Succession

Frontiers in Microbiology
Joseph KnelmanSteve K Schmidt

Abstract

Past research demonstrating the importance plant-microbe interactions as drivers of ecosystem succession has focused on how plants condition soil microbial communities, impacting subsequent plant performance and plant community assembly. These studies, however, largely treat microbial communities as a black box. In this study, we sought to examine how emblematic shifts from early successionalAlnus viridusssp.sinuata(Sitka alder) to late successionalPicea sitchensis(Sitka spruce) in primary succession may be reflected in specific belowground changes in bacterial community structure and nitrogen cycling related to the interaction of these two plants. We examined early successional alder-conditioned soils in a glacial forefield to delineate how alders alter the soil microbial community with increasing dominance. Further, we assessed the impact of late-successional spruce plants on these early successional alder-conditioned microbiomes and related nitrogen cycling through a leachate addition microcosm experiment. We show how increasingly abundant alder select for particular bacterial taxa. Additionally, we found that spruce leachate significantly alters the composition of these microbial communities in large part by driving decline...Continue Reading

References

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Citations

Mar 20, 2019·The ISME Journal·Colin J BrislawnHans C Bernstein
May 24, 2019·MSystems·Elias K ZegeyeHans C Bernstein
May 18, 2019·MSystems·Elias K ZegeyeHans C Bernstein
Nov 11, 2021·The Science of the Total Environment·Cherie M O'SullivanNarendra Tuteja

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Methods Mentioned

BETA
Illumina Sequencing
PCR

Software Mentioned

FastTree
PERMANOVA
pgirmess
PRIMER E
FigShare
RELATE
PERMDISP
Dendroscope
UPARSE
Cutadapt

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