Comment on egusphere-2023-1492 DOI Creative Commons
Thomas Wutzler

Published: Oct. 10, 2023

Abstract. Describing the coupling of nitrogen (N), phosphorus (P), and carbon (C) cycles land ecosystems requires understanding microbial element use efficiencies soil organic matter (SOM) decomposition. These are studied by enzyme steady allocation model (SESAM) at decadal scale. The assumes that communities their develop towards an optimum where growth entire community is maximized. Specifically, SESAM approximated this optimization allocating resources to several SOM degrading enzymes proportional revenue these enzymes, called Relative approach. However, a rigorous mathematical treatment approximation has been lacking so far. Therefore, in study we derive explicit formulas maximize total return from enzymatic processing, Optimal Further, another heuristic approach prescribes change without need deriving formulation for optimal allocation, Derivative When comparing predictions across approaches, found was special case valid sufficiently high biomass. low biomass, it overestimated having lower revenues compared Derivative-based closely tracked allocation. finding more together with observing same patterns approaches increases our confidence into conclusions drawn studies. Moreover, new developments extend range conditions which can be drawn. smaller set types expressed biomass led us formulate constrained hypothesis, provides complementary explanation why some substrates preserved over decades although often being decomposed within few years incubation experiments. This shows how optimality considerations lead simplified models, insights hypotheses. It step simple representation adaptive community, required coupled stoichiometric CNP dynamic models aimed processes beyond ecosystem

Language: Английский

A novel decomposer-exploiter interaction framework of plant residue microbial decomposition DOI Creative Commons
Youzhi Miao, Wei Wang, Huanhuan Xu

et al.

Genome biology, Journal Year: 2025, Volume and Issue: 26(1)

Published: Feb. 3, 2025

Plant residue microbial decomposition, subject to significant environmental regulation, represents a crucial ecological process shaping and cycling the largest terrestrial soil organic carbon pool. However, fundamental understanding of functional dynamics interactions between principal participants, fungi bacteria, in natural habitats remains limited. In this study, evolution fungal bacterial communities their were elucidated during degradation complexity-gradient plant residues. The results reveal that with increasing complexity, exhibit heightened adaptability, while richness declines sharply. differential bacteria is driven by complexity but follows distinct trajectories. Fundamentally, evolve towards promoting so consistently act as dominant decomposers. Conversely, predominantly increase expression genes glycosidases exploit products, thereby acting exploiters. presence enables endures exploitation. This study introduces novel framework decomposers exploiters advancing our comprehensive processes governing cycling.

Language: Английский

Citations

0
A prediction model of soil organic carbon into river and its driving mechanism in red soil region DOI Creative Commons

HE Yan-hu,

Yuyin Yang,

Daoguo Xu

et al.

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: Feb. 10, 2025

Soil erosion contributes to the irreversible loss of soil organic carbon (SOC) into rivers (SOCR), posing risks food security and cycle assessments. Red regions, characterized by high sink potential selenium enrichment, are particularly vulnerable. However, existing studies largely rely on small-scale experiments, with limited understanding basin-scale SOCR dynamics their driving factors. This study integrates Water Assessment Tool (SWAT) for sediment yield simulation a Organic Carbon Content (SOCC) model quantify at basin scale. A Random Forest-based prediction was developed explore spatial-temporal variability mechanisms in Dongjiang River Basin (DRB), representative red region southern China. Results indicate significant heterogeneity, higher observed downstream, human-disturbed areas during flood seasons. The demonstrates excellent performance (R²>0.9). Key drivers include yield, cultivated land area (CULT), urban (TOWN), urbanization showing stronger sensitivity than cultivation due factors such as city size impervious surfaces. proposed framework reveals dynamic change characteristics its mechanism, which has be generalized other basins similar studies, provides technical support resource management cycling erosion-prone region.

Language: Английский

Citations

0
Microbial transcriptome patterns highlight increased pedogenesis-related activity in arid soils under simulated humid conditions DOI Creative Commons

Victoria Rodríguez,

Alexander Bartholomäus, Susanne Liebner

et al.

Environmental Microbiome, Journal Year: 2025, Volume and Issue: 20(1)

Published: March 17, 2025

Abstract Background In arid and semiarid environments, microbial activity is restricted by low water availability high evapotranspiration rates, soil development limited. Under humid conditions, such limitations can be overcome, accelerating pedogenesis processes. Our study aims to broaden our understanding of under a climate change scenario toward conditions identify the microorganisms that help transform initial soils from sites. We characterized pedogenetic processes how their gene expression differs between sites sixteen-week simulation experiment using metagenomic metatranscriptomic approaches. Results found an intense functional response triggered in site compared site, which showed greater resilience. The undergoes higher transcription genes involved aggregate formation, phosphorus metabolism, weathering, potentially adapting change. Additionally, transcriptional reconfiguration linked carbon nitrogen dynamics suggests use available organic resources alongside autotrophy increased moisture. Pseudomonadota Actinomycetota dominated overall profile specific functions associated with early stages both Conclusions findings highlight rapid activation pathways related sites, driven metabolic requirements environmental stressors, influencing global

Language: Английский

Citations

0
Long-term fertilization legacy effects and temperatures regulate soil microbial function of crop straw decomposition in a greenhouse vegetable field DOI

Long Ma,

Dongming Wu, Ruonan Li

et al.

Applied Soil Ecology, Journal Year: 2025, Volume and Issue: 210, P. 106056 - 106056

Published: March 31, 2025

Language: Английский

Citations

0
Earthworm gut's potential positive impact on carbon cycle by influencing carbohydrate metabolism and microbial genome size DOI Creative Commons
Shuai Du, Da Lin,

Tian-Lun Zhang

et al.

Fundamental Research, Journal Year: 2025, Volume and Issue: unknown

Published: March 1, 2025

Language: Английский

Citations

0
Metagenomic reconstruction of microbial structure and carbon cycling for annual crop productivity: influence of long-term straw mulching and nitrogen DOI
Hongkun Yang, Qi Zou, Jiarui Zhang

et al.

Applied Soil Ecology, Journal Year: 2025, Volume and Issue: 211, P. 106146 - 106146

Published: April 29, 2025

Language: Английский

Citations

0
Mechanism of microbial inhibition of rainfall erosion in black soil area, as a soil structure builder DOI

Zhaoxing Xiao,

Renjie Hou,

Tianxiao Li

et al.

Soil and Tillage Research, Journal Year: 2023, Volume and Issue: 233, P. 105819 - 105819

Published: July 6, 2023

Language: Английский

Citations

8
Crop straw incorporation increases the soil carbon stock by improving the soil aggregate structure without stimulating soil heterotrophic respiration DOI Creative Commons
Hongyu Lin, Jing Zheng, Minghua Zhou

et al.

Journal of Integrative Agriculture, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 1, 2024

Language: Английский

Citations

2
Long-term anthropogenic field management enhanced wheat productivity and resource utilization in the Loess Plateau region of China DOI
Peng Wu,

Gang Zhao,

Qi Wu

et al.

European Journal of Agronomy, Journal Year: 2023, Volume and Issue: 151, P. 126986 - 126986

Published: Sept. 23, 2023

Language: Английский

Citations

5
The Impact of Combining Robinia pseudoacacia Leaves and Corn Straw on Soil Carbon Content and Corn Yield in Loess Plateau DOI Creative Commons
Hanyu Liu, Jianjian Liu,

Zhenjiao Zhang

et al.

Agronomy, Journal Year: 2024, Volume and Issue: 14(4), P. 689 - 689

Published: March 27, 2024

In the agroforestry system, organic matter in farmland and natural ecosystem enters soil a mixed form to improve fertility carbon pool quality. However, it is unclear how microbial carbon-degrading enzyme activity responds dynamics this process. Therefore, we took Loess Plateau as research object, combining application of corn straw Robinia pseudoacacia leaves mass ratio 4:0, 3:1, 2:2, 1:3, 0:4 for returning field. We measured grain yield, emission, component content, farmland. The results showed that had significant impact on components (readily oxidizable recalcitrant carbon), enzymes (polyphenol oxidase, peroxidase, cellobiohydrolase), cumulative emissions. trend different indicators treatments during growth period was similar. found emissions were closely related ROC oxidase activity, while content hydrolase activity. Compared not field, returned field 1:3(Y1C3) can increase yield by 32.04%. Y1C3 treatment has highest lowest crop emission efficiency. Soil water plays crucial role process transformation driven enzymes. conclusion, are Combining may be more suitable farming measure fragile habitats than other solutions.

Language: Английский

Citations

1