Modelling in situ activities of enzymes as a tool to explain seasonal variation of soil respiration from agro-ecosystems

Ali, Rana Shahbaz; Ingwersen, Joachim; Demyan, Michael Scott; Funkuin, Yvonne Nkwain; Wizemann, Hans-Dieter; Kandeler, Ellen; Poll, Christian

doi:10.1016/j.soilbio.2014.12.001

Cited by 52 publications

(20 citation statements)

References 78 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The highly consistent responses of GA and SR to N addition identified here support the utility of explicitly incorporating microbial activities and soil EEAs into models for predicting the dynamics of soil C under various global change scenarios (Allison et al ., ; Wieder et al ., ). Actually, several recent modeling efforts have confirmed that incorporation of soil EEAs into enzymatic‐kinetics models has substantially improved the projection of both the direction and magnitude of C–climate feedbacks (Allison et al ., ; Li et al ., ; Xu et al ., ; Ali et al ., ). Our results also have important implications for other global change factors, for example, climatic warming.…”

Section: Discussionmentioning

confidence: 97%

“…It is therefore likely that understanding how soil EEAs respond to N addition could provide novel ways to reconcile the divergent responses of SR to N addition (Allison et al ., ; Weedon et al ., ; Stone et al ., ), a concept also suggested by several recent reviews (Fog, ; Knorr et al ., ; Janssens et al ., ). Evidence from recent enzymatic kinetics‐based modeling efforts also supported that inclusion of soil EEAs into models has greatly improved the estimates of SR and C–climate feedbacks (Allison et al ., ; Ali et al ., ). Therefore, it is clear that our understanding of the effects of N addition on SR will greatly benefit from the study of soil EEAs.…”

Section: Introductionmentioning

confidence: 97%

See 1 more Smart Citation

Costimulation of soil glycosidase activity and soil respiration by nitrogen addition

Chen

Luo

et al. 2016

Global Change Biology

181

View full text Add to dashboard Cite

Unprecedented levels of nitrogen (N) have been deposited in ecosystems over the past century, which is expected to have cascading effects on microbially mediated soil respiration (SR). Extracellular enzymes play critical roles on the degradation of soil organic matter, and measurements of their activities are potentially useful indicators of SR. The links between soil extracellular enzymatic activities (EEAs) and SR under N addition, however, have not been established. We therefore conducted a meta-analysis from 62 publications to synthesize the responses of soil EEAs and SR to elevated N. Nitrogen addition significantly increased glycosidase activity (GA) by 13.0%, α-1,4-glucosidase (AG) by 19.6%, β-1,4-glucosidase (BG) by 11.1%, β-1,4-xylosidase (BX) by 21.9% and β-D-cellobiosidase (CBH) by 12.6%. Increases in GA were more evident for long duration, high rate, organic and mixed N addition (combination of organic and inorganic N addition), as well as for studies from farmland. The response ratios (RRs) of GA were positively correlated with the SR-RRs, even when evaluated individually for AG, BG, BX and CBH. This positive correlation between GA-RR and SR-RR was maintained for most types of vegetation and soil as well as for different methods of N addition. Our results provide the first evidence that GA is linked to SR under N addition over a range of ecosystems and highlight the need for further studies on the response of other soil EEAs to various global change factors and their implications for ecosystem functions.

show abstract

Section: Discussionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 97%

Costimulation of soil glycosidase activity and soil respiration by nitrogen addition

Chen

Luo

et al. 2016

Global Change Biology

181

View full text Add to dashboard Cite

show abstract

“…More importantly, it confirms that phosphomonoesterase activities which are measured under conditions of substrate saturation indicate potential rather than actual rates, since the rates derived from these assays are one to two orders of magnitude greater than gross organic P mineralization rates. For enzymes from the C cycle, in situ enzyme activities as affected by soil temperature and moisture were recently modeled successfully, showing a clear relationship to CO 2 flux from soil (Steinweg et al, 2012;Ali et al, 2015). Similar work should also be done for enzymes from the P cycle, including phosphomonoesterases and phosphodiesterases which have both been associated with the depletion of organic P in the rhizosphere (Chen et al, 2002).…”

Section: Role Of Extracellular Phosphatase Enzymesmentioning

confidence: 90%

Assessment of gross and net mineralization rates of soil organic phosphorus – A review

Bünemann

2015

Soil Biology and Biochemistry

246

136

View full text Add to dashboard Cite

“…Because warming methods differ in their effects on soil temperature and moisture (Chen et al., , Lu et al., ), soil microbial community (Chen et al.,), and belowground C allocation (Rustad et al., ; Schindlbacher, Schnecker, Takriti, Borken, & Wanek, ), they may differ in their effects on EEAs as well. Including cellulase and ligninase activities in soil C models may improve future predictions of soil C stocks (Ali et al., ; Luo, Chen, Chen, & Feng, ; Moorhead, Sinsabaugh, Hill, & Weintraub, ). However, warming effects on cellulase and ligninase activities, as well as the underlying mechanisms, are still unclear.…”

Section: Introductionmentioning

confidence: 99%

Differential responses of carbon‐degrading enzyme activities to warming: Implications for soil respiration

Chen

Luo

García‐Palacios

et al. 2018

Global Change Biology

156

View full text Add to dashboard Cite

Extracellular enzymes catalyze rate-limiting steps in soil organic matter decomposition, and their activities (EEAs) play a key role in determining soil respiration (SR). Both EEAs and SR are highly sensitive to temperature, but their responses to climate warming remain poorly understood. Here, we present a meta-analysis on the response of soil cellulase and ligninase activities and SR to warming, synthesizing data from 56 studies. We found that warming significantly enhanced ligninase activity by 21.4% but had no effect on cellulase activity. Increases in ligninase activity were positively correlated with changes in SR, while no such relationship was found for cellulase. The warming response of ligninase activity was more closely related to the responses of SR than a wide range of environmental and experimental methodological factors. Furthermore, warming effects on ligninase activity increased with experiment duration. These results suggest that soil microorganisms sustain long-term increases in SR with warming by gradually increasing the degradation of the recalcitrant carbon pool.

show abstract

Modelling in situ activities of enzymes as a tool to explain seasonal variation of soil respiration from agro-ecosystems

Cited by 52 publications

References 78 publications

Costimulation of soil glycosidase activity and soil respiration by nitrogen addition

Costimulation of soil glycosidase activity and soil respiration by nitrogen addition

Assessment of gross and net mineralization rates of soil organic phosphorus – A review

Differential responses of carbon‐degrading enzyme activities to warming: Implications for soil respiration

Contact Info

Product

Resources

About