Changes in soil microbial community structure under elevated tropospheric O3 and CO2

Kanerva, Teri; Palojärvi, Ansa; Rämö, Kaisa; Manninen, Sirkku

doi:10.1016/j.soilbio.2008.06.007

Cited by 80 publications

(41 citation statements)

References 70 publications

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“…Several previous studies showed that the microbial community composition and structure was affected by eCO 2 (Feng et al, 2010;He et al, 2010bHe et al, , 2012bDeng et al, 2012;Hayden et al, 2012), eO 3 and/or eCO 2 þ eO 3 (Phillips et al, 2002;Kasurinen et al, 2005;Kanerva et al, 2008). For example, a previous study at the BioCON site showed that eCO 2 increased plant and microbial biomass, soil pH and moisture and significantly shifted the functional and phylogentic/taxonmoic composition, structure and network interactions of soil micorbial communities (Zhou et al, 2010;He et al, 2010bHe et al, , 2012bZhou et al, 2011;Deng et al, 2012).…”

Section: Discussionmentioning

confidence: 99%

Distinct responses of soil microbial communities to elevated CO2 and O3 in a soybean agro-ecosystem

Xiong

Kent

et al. 2013

The ISME Journal

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The concentrations of atmospheric carbon dioxide (CO 2 ) and tropospheric ozone (O 3 ) have been rising due to human activities. However, little is known about how such increases influence soil microbial communities. We hypothesized that elevated CO 2 (eCO 2 ) and elevated O 3 (eO 3 ) would significantly affect the functional composition, structure and metabolic potential of soil microbial communities, and that various functional groups would respond to such atmospheric changes differentially. To test these hypotheses, we analyzed 96 soil samples from a soybean free-air CO 2 enrichment (SoyFACE) experimental site using a comprehensive functional gene microarray (GeoChip 3.0). The results showed the overall functional composition and structure of soil microbial communities shifted under eCO 2 , eO 3 or eCO 2 þ eO 3 . Key functional genes involved in carbon fixation and degradation, nitrogen fixation, denitrification and methane metabolism were stimulated under eCO 2 , whereas those involved in N fixation, denitrification and N mineralization were suppressed under eO 3 , resulting in the fact that the abundance of some eO 3 -supressed genes was promoted to ambient, or eCO 2 -induced levels by the interaction of eCO 2 þ eO 3 . Such effects appeared distinct for each treatment and significantly correlated with soil properties and soybean yield. Overall, our analysis suggests possible mechanisms of microbial responses to global atmospheric change factors through the stimulation of C and N cycling by eCO 2 , the inhibition of N functional processes by eO 3 and the interaction by eCO 2 and eO 3 . This study provides new insights into our understanding of microbial functional processes in response to global atmospheric change in soybean agro-ecosystems.

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Section: Discussionmentioning

confidence: 99%

Distinct responses of soil microbial communities to elevated CO2 and O3 in a soybean agro-ecosystem

Xiong

Kent

et al. 2013

The ISME Journal

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“…For example, a significant discrimination of sole-carbon source utilization patterns was observed for the wheat rhizosphere soil but not for the bulk soil, and the functional diversity of the rhizosphere microbial communities was reduced under eO 3 (Chen et al, 2009). Also, a few studies at the Aspen FACE site (Larson et al, 2002;Phillips et al, 2002;Chung et al, 2006;Holmes et al, 2006;Zak et al, 2007) and with open-top chambers (Kasurinen et al, 2005) or mesocosms (Kanerva et al, 2008) indicated that eO 3 altered the functional diversity, structure and/or metabolic potential of soil microbial communities. In this study, our results did not fully support the above hypothesis that eO 3 would alter the overall functional diversity and structure of rhizosphere microbial communities.…”

Section: Shifts Of Functional Gene Representation Under Eo 3 X Li Et Almentioning

confidence: 99%

“…In recent years, most studies on the effect of eO 3 on rhizosphere microbial communities were largely based on open-top chambers, and the results mainly focused on the changes of microbial biomass and structure by phospholipid fatty acid analysis, denaturing gradient gel electrophoresis methods (Kasurinen et al, 2005;Chung et al, 2006;Kanerva et al, 2008), and/or singlestrand conformation polymorphism method (Dohrmann and Tebbe, 2005). Those studies indicated that eO 3 had little or significant effects on soil microbial communities with different plants/ecosystems.…”

Section: Introductionmentioning

confidence: 99%

Shifts of functional gene representation in wheat rhizosphere microbial communities under elevated ozone

Deng

et al. 2012

The ISME Journal

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Although the influence of ozone (O3) on plants has been well studied in agroecosystems, little is known about the effect of elevated O3 (eO3) on soil microbial functional communities. Here, we used a comprehensive functional gene array (GeoChip 3.0) to investigate the functional composition, and structure of rhizosphere microbial communities of Yannong 19 (O3-sensitive) and Yangmai 16 (O3-relatively sensitive) wheat (Triticum aestivum L.) cultivars under eO3. Compared with ambient O3 (aO3), eO3 led to an increase in soil pH and total carbon (C) percentages in grain and straw of wheat plants, and reduced grain weight and soil dissolved organic carbon (DOC). Based on GeoChip hybridization signal intensities, although the overall functional structure of rhizosphere microbial communities did not significantly change by eO3 or cultivars, the results showed that the abundance of specific functional genes involved in C fixation and degradation, nitrogen (N) fixation, and sulfite reduction did significantly (P<0.05) alter in response to eO3 and/or wheat cultivars. Also, Yannong 19 appeared to harbor microbial functional communities in the rhizosphere more sensitive in response to eO3 than Yangmai 16. Additionally, canonical correspondence analysis suggested that the functional structure of microbial community involved in C cycling was largely shaped by soil and plant properties including pH, DOC, microbial biomass C, C/N ratio and grain weight. This study provides new insight into our understanding of the influence of eO3 and wheat cultivars on soil microbial communities.

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“…CLPP and PLFA analyses showed that carbon degradative microbes and the microbial structure of surface soil under paddy rice were altered in response to eO 3 , and PLFAs showed much more change than CLPPs (Chen et al, 2010). Seven meadow species were exposed to eO 3 for three growing seasons, and the PLFA results of bulk soil showed that bacterial, actinobacterial, and fungal PLFAs and the fungal:bacterial PLFA ratio were decreased (Kanerva et al, 2008). In the same study, the decrease in the total microbial PLFA biomass in the bulk soil of Lathyrus pratensis under eO 3 and eCO 2 (elevated CO 2 ) (both p = 0.050) arose from reductions in the PLFA biomass of indicator subgroups for actinobacteria (29% and 31%), bacteria (26% and 33%) and mycorrhiza (i.e., AM fungi) (31% and 35%) in particular.…”

Section: Introductionmentioning

confidence: 99%

Structure and function of rhizosphere and non-rhizosphere soil microbial community respond differently to elevated ozone in field-planted wheat

Chen¹,

Wang²,

He³

2015

Journal of Environmental Sciences

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Changes in soil microbial community structure under elevated tropospheric O3 and CO2

Cited by 80 publications

References 70 publications

Distinct responses of soil microbial communities to elevated CO2 and O3 in a soybean agro-ecosystem

Distinct responses of soil microbial communities to elevated CO2 and O3 in a soybean agro-ecosystem

Shifts of functional gene representation in wheat rhizosphere microbial communities under elevated ozone

Structure and function of rhizosphere and non-rhizosphere soil microbial community respond differently to elevated ozone in field-planted wheat

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