Plant genotype controls wetland soil microbial functioning in response to sea-level rise
<p>Climate change can strongly alter soil microbial functioning via plant–microbe interactions, often with important consequences for ecosystem carbon and nutrient cycling. Given the high degree of intraspecific trait variability in plants, it has been hypothesized that genetic shifts within p...
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Copernicus Publications
2021
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oai:doaj.org-article:554b6c16886d442bb49a1c335f163c122021-11-30T11:56:11ZPlant genotype controls wetland soil microbial functioning in response to sea-level rise10.5194/bg-18-6133-20211726-41701726-4189https://doaj.org/article/554b6c16886d442bb49a1c335f163c122021-11-01T00:00:00Zhttps://bg.copernicus.org/articles/18/6133/2021/bg-18-6133-2021.pdfhttps://doaj.org/toc/1726-4170https://doaj.org/toc/1726-4189<p>Climate change can strongly alter soil microbial functioning via plant–microbe interactions, often with important consequences for ecosystem carbon and nutrient cycling. Given the high degree of intraspecific trait variability in plants, it has been hypothesized that genetic shifts within plant species yield a large potential to control the response of plant–microbe interactions to climate change. Here we examined if sea-level rise and plant genotype interact to affect soil microbial communities in an experimental coastal wetland system, using two known genotypes of the dominant salt-marsh grass <i>Elymus athericus</i> characterized by differences in their sensitivity to flooding stress – i.e., a tolerant genotype from low-marsh environments and an intolerant genotype from high-marsh environments. Plants were exposed to a large range of flooding frequencies in a factorial mesocosm experiment, and soil microbial activity parameters (exo-enzyme activity and litter breakdown) and microbial community structure were assessed. Plant genotype mediated the effect of flooding on soil microbial community structure and determined the presence of flooding effects on exo-enzyme activities and belowground litter breakdown. Larger variability in microbial community structure, enzyme activities, and litter breakdown in soils planted with the intolerant plant genotype supported our general hypothesis that effects of climate change on soil microbial activity and community structure can depend on plant intraspecific genetic variation. In conclusion, our data suggest that adaptive genetic variation in plants could suppress or facilitate the effects of sea-level rise on soil microbial communities. If this finding applies more generally to coastal wetlands, it yields important implications for our understanding of ecosystem–climate feedbacks in the coastal zone.</p>H. TangH. TangS. LiebnerS. LiebnerS. ReentsS. NolteS. NolteK. JensenF. HornP. MuellerP. MuellerCopernicus PublicationsarticleEcologyQH540-549.5LifeQH501-531GeologyQE1-996.5ENBiogeosciences, Vol 18, Pp 6133-6146 (2021) |
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Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
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Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 H. Tang H. Tang S. Liebner S. Liebner S. Reents S. Nolte S. Nolte K. Jensen F. Horn P. Mueller P. Mueller Plant genotype controls wetland soil microbial functioning in response to sea-level rise |
| description |
<p>Climate change can strongly alter soil microbial functioning via
plant–microbe interactions, often with important consequences for ecosystem
carbon and nutrient cycling. Given the high degree of intraspecific trait
variability in plants, it has been hypothesized that genetic shifts within
plant species yield a large potential to control the response of
plant–microbe interactions to climate change. Here we examined if sea-level
rise and plant genotype interact to affect soil microbial communities in an
experimental coastal wetland system, using two known genotypes of the
dominant salt-marsh grass <i>Elymus athericus</i> characterized by differences in their sensitivity
to flooding stress – i.e., a tolerant genotype from low-marsh environments
and an intolerant genotype from high-marsh environments. Plants were exposed
to a large range of flooding frequencies in a factorial mesocosm experiment,
and soil microbial activity parameters (exo-enzyme activity and litter
breakdown) and microbial community structure were assessed. Plant genotype
mediated the effect of flooding on soil microbial community structure and
determined the presence of flooding effects on exo-enzyme activities and
belowground litter breakdown. Larger variability in microbial community
structure, enzyme activities, and litter breakdown in soils planted with the
intolerant plant genotype supported our general hypothesis that effects of
climate change on soil microbial activity and community structure can depend
on plant intraspecific genetic variation. In conclusion, our data suggest
that adaptive genetic variation in plants could suppress or facilitate the
effects of sea-level rise on soil microbial communities. If this finding
applies more generally to coastal wetlands, it yields important implications
for our understanding of ecosystem–climate feedbacks in the coastal zone.</p> |
| format |
article |
| author |
H. Tang H. Tang S. Liebner S. Liebner S. Reents S. Nolte S. Nolte K. Jensen F. Horn P. Mueller P. Mueller |
| author_facet |
H. Tang H. Tang S. Liebner S. Liebner S. Reents S. Nolte S. Nolte K. Jensen F. Horn P. Mueller P. Mueller |
| author_sort |
H. Tang |
| title |
Plant genotype controls wetland soil microbial functioning in response to sea-level rise |
| title_short |
Plant genotype controls wetland soil microbial functioning in response to sea-level rise |
| title_full |
Plant genotype controls wetland soil microbial functioning in response to sea-level rise |
| title_fullStr |
Plant genotype controls wetland soil microbial functioning in response to sea-level rise |
| title_full_unstemmed |
Plant genotype controls wetland soil microbial functioning in response to sea-level rise |
| title_sort |
plant genotype controls wetland soil microbial functioning in response to sea-level rise |
| publisher |
Copernicus Publications |
| publishDate |
2021 |
| url |
https://doaj.org/article/554b6c16886d442bb49a1c335f163c12 |
| work_keys_str_mv |
AT htang plantgenotypecontrolswetlandsoilmicrobialfunctioninginresponsetosealevelrise AT htang plantgenotypecontrolswetlandsoilmicrobialfunctioninginresponsetosealevelrise AT sliebner plantgenotypecontrolswetlandsoilmicrobialfunctioninginresponsetosealevelrise AT sliebner plantgenotypecontrolswetlandsoilmicrobialfunctioninginresponsetosealevelrise AT sreents plantgenotypecontrolswetlandsoilmicrobialfunctioninginresponsetosealevelrise AT snolte plantgenotypecontrolswetlandsoilmicrobialfunctioninginresponsetosealevelrise AT snolte plantgenotypecontrolswetlandsoilmicrobialfunctioninginresponsetosealevelrise AT kjensen plantgenotypecontrolswetlandsoilmicrobialfunctioninginresponsetosealevelrise AT fhorn plantgenotypecontrolswetlandsoilmicrobialfunctioninginresponsetosealevelrise AT pmueller plantgenotypecontrolswetlandsoilmicrobialfunctioninginresponsetosealevelrise AT pmueller plantgenotypecontrolswetlandsoilmicrobialfunctioninginresponsetosealevelrise |
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