Response of Extracellular Enzyme Stoichiometric Properties and Microbial Metabolic Limitations to the Ecosystem Transition Mode Employed in Red Jujube Economic Forests on the Loess Plateau

Microorganisms, Journal Year: 2025, Volume and Issue: 13(4), P. 729 - 729

Published: March 24, 2025

Soil carbon (C), nitrogen (N), and phosphorus (P) cycling microbial metabolism limitations are key factors affecting nutrient vegetation development. Extracellular enzyme activity (EEA) plays a role in ecosystems, their activities can serve as indicators of requirements. At present, there is insufficient research on the microorganisms during ecosystem transition abandoned jujube forests Loess Plateau. Four modes were selected: forest replanted with Pinus tabulaeformis (CP), Platycladus orientalis (PO), medicinal materials (MM), alfalfa (AL). An (CK) was used control. physical chemical properties, biomass carbon, nitrogen, phosphorus, well changes β-1,4-glucosidase (BG), leucine aminopeptidase (LAP), N-acetylglucosamine (NAG), alkaline phosphatase (AP), studied. Analysis soil performed. Compared those CK treatment, C, N, P extracellular enzymes significantly increased (p < 0.05) treatments, C:NEEA, C:PEEA, N:PEEA ratios tended to decrease. Within decreased layer deepened, whereas stoichiometric ratio significant differences observed between layers. The vector model quantify revealed that surface limited mainly by C 10–20 cm 20–40 layers, N. Correlation analysis SOC, pH, MBC, MBN main activity. Mantel’s test (NAG + LAP), AP, C:PEEA important length angle. RAD properties had greater impact stoichiometry metabolic than physicochemical did. This study highlights importance determining processes enhances our understanding how ecological affect constraints Forest transformation have impacts limitation.

Language: Английский

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Mixed plantations enhance soil aggregation and carbon storage: A global meta-analysis

CATENA, Journal Year: 2025, Volume and Issue: 254, P. 109013 - 109013

Published: April 7, 2025

Language: Английский

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Acidic compost tea reduces fungal diversity but improves community structure and P availability in calcareous cotton fields

Rhizosphere, Journal Year: 2025, Volume and Issue: unknown, P. 101066 - 101066

Published: April 1, 2025

Language: Английский

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The role of fungal keystone taxa in soil multifunctionality across subtropical forests

Applied Soil Ecology, Journal Year: 2025, Volume and Issue: 211, P. 106108 - 106108

Published: April 18, 2025

Language: Английский

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Priority Colonization of Endophytic Fungal Strains Drives Litter Decomposition and Saprotroph Assembly via Functional Trait Selection in Karst Oak Forests

Microorganisms, Journal Year: 2025, Volume and Issue: 13(5), P. 1066 - 1066

Published: May 3, 2025

Litter decomposition dynamics are largely governed by microbial interactions. While the involvement of endophytic fungi in early-stage and succession is well established, their species-specific contributions to decomposer community assembly remain insufficiently understood. This study investigated effects single-strain colonization using dominant species (Tubakia dryina, Tubakia dryinoides, Guignardia sp.) rare (Neofusicoccum parvum, Penicillium citrinum) on Quercus acutissima leaf through a controlled field experiment karst ecosystem. Endophytes accelerated rates across treatments but paradoxically reduced transient CO2 emissions, linked intensified carbon phosphorus limitations late stages. Contrary expectations, efficiency was fungal traits rather than abundance, with outperforming taxa. induced significant restructuring, reducing Ascomycota while enriching lignin-degrading Basidiomycota, minimally affected bacterial composition. Co-occurrence networks revealed endophyte-driven fragmentation connectivity, only two keystone hubs (Trechispora sp. Russula carmesina) identified compared natural communities. Endophytic improved assembly, mediated an increase Basidiomycota suppression pathogenic Leotiomycetes lineages. Our findings demonstrate that endophytes hierarchically regulate communities phylogenetically conserved interactions, prioritizing functional trait selection over competitive dominance, thereby stabilizing under nutrient constraints. mechanistic framework advances predictions litter decay forest ecosystems undergoing perturbations.

Language: Английский

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Response of Soil Microbial Community Structure and Diversity to Mixed Proportions and Mixed Tree Species in Bamboo–Broad-Leaved Mixed Forests

Forests, Journal Year: 2024, Volume and Issue: 15(6), P. 921 - 921

Published: May 25, 2024

Bamboo and broad-leaved mixed forests have been widely recognized for their advantages in maintaining ecological balance, improving soil fertility, enhancing biodiversity. To understand the effects of tree species mixing ratios on microbial communities bamboo forests, we quantified structure diversity responses to using high-throughput sequencing 16 S rRNA gene. Three were studied, including bamboo–Castanopsis chinensis Hance forest (CCB), bamboo–Alniphyllum fortune (Hemsl.) Makino (AFB), bamboo–Choerospondias axillaris (Roxb.) B. L. Burtt & A. W. Hill (CAB). We assessed impact by measuring properties composition microbes. The results indicate that are highly dependent forests. had a more pronounced effect than richness. In CAB, peaked at 10%–20% 20%–40%. presence trees significantly altered relationships among bacteria, with CAB showing highest stability, likely due increased quantity litter from Choerospondias axillaris. Our show choice influence bamboo–broad-leaf An optimal ratio can maximize bacterial providing insights management promoting ecosystem health sustainability.

Language: Английский

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Spatiotemporal dynamics of reactive oxygen species and its effect on beta-blockers’ degradation in aquatic plants’ rhizosphere

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 476, P. 135146 - 135146

Published: July 7, 2024

Language: Английский

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Conversion of pure Chinese fir plantation to multi-layered mixed plantation increases organic phosphorus accumulation and transformation within soil aggregates

Applied Soil Ecology, Journal Year: 2024, Volume and Issue: 201, P. 105518 - 105518

Published: July 9, 2024

Evaluation of the impacts environmental factors and microbial communities on soil organic phosphorus (Po) availability is needed to clarify P cycling regulate plantations productivity. However, effects Po accumulation transformation converting pure Chinese fir plantation multi-layered mixed their regulatory mechanisms remain unclear. The aim this study was examine stand (Cunninghamia lanceolata; PP) with multiple tree species (C. lanceolata, Castanopsis hystrix, Michelia hedyosperma; MP) within topsoil (0–10 cm) aggregates in subtropical China. Our results showed that carbon (SOC), total nitrogen (TN), ammonium (NH4+-N), available (AP), as well carbon‑nitrogen ratio (C/Nsoil) carbon‑phosphorus (C/Psoil) were significantly higher (P < 0.05) all MP than those PP. quantities biomass C, N, (MBC, MBN, MBP) different greater phospholipid fatty acid contents related bacteria, fungi, arbuscular mycorrhizal fungi (AMF), actinomycetes aggregate classes relative activities tested hydrolytic enzymes, labile P, moderately resistant highly contents, most size MP. Finally, redundancy analysis (RDA) suggested fractions primarily affected by NH4+-N, litterfall (LF), litter (C/Nlitter), SOC fine root (FR). findings suggest into may represent an effective management strategy for promoting regulating properties degraded soils plantations.

Language: Английский

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Restoring Subtropical Forests: Alleviating P Limitation and Introducing C Limitation Using Evergreen Broad-Leaved Tree Species

Forests, Journal Year: 2024, Volume and Issue: 15(3), P. 568 - 568

Published: March 21, 2024

Determining which species to utilize for the artificial restoration of subtropical secondary forests has become a focal point in forestry and ecology. To compare effects forest model on soil microbial nutrient acquisition limitation, we examined (CKs), evergreen coniferous (GCPs), mixed broad-leaved (GCBMs), (GBMs), natural deciduous (DBMs) as research subjects. Among them, GCPs, GCBMs, GBMs were dominated by early, middle, climax stages succession, respectively. The activities stoichiometry β-1,4-glucosidase (BG), β-1,4-N-acetylglucosaminidase (NAG), leucine aminopeptidase (LAP), acid phosphatase (ACP) topsoil analyzed. results showed that type significantly affects BG LAP rather than NAG or ACP. activity DBMs was lowest, while CKs higher plantations. Furthermore, limitation microbes quantitatively analyzed using vector analysis enzyme stoichiometry. study area co-limited C P, order > P N. forests, stoichiometric ratios GCPs closest 1:1:1. From GBMs, increased, decreased. slightly lower CKs. Overall, plantations less bulk density, C/P, N/P influenced These suggest alleviated offered potential alleviating limitation. Compared with species, employing pioneer mid-successional can better achieve balanced requirements.

Language: Английский

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Mixed Eucalyptus plantations enhance soil organic carbon accumulation and chemical stability through soil microbial community and multifunctionality

CATENA, Journal Year: 2024, Volume and Issue: 245, P. 108315 - 108315

Published: Aug. 12, 2024

Language: Английский

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