Responses of Soil Microbial Survival Strategies and Functional Changes to Wet–Dry Cycle Events
Abstract
:1. Introduction
2. Materials and Methods
2.1. Study Site and Sample Collection
2.2. Analysis of Soil Physicochemical Properties
2.3. Determination of Soil Extracellular Enzyme Activities
2.4. High–Throughput Sequencing of Soil Bacteria and Fungi
2.5. Data Analysis
3. Results
3.1. Changes in Soil Physicochemical Properties and Enzyme Activities under Wet–Dry Events
3.2. Soil Microbial Community Diversity and Composition under Wet–Dry Events
3.3. Changes in Soil r/K–Strategist Bacteria under Wet–Dry Events
3.4. Relationships between Soil r/K–Strategist Bacteria and Fungi under Wet–Dry Events
3.5. Main Environmental Factors Affecting Soil Microbial Community Structure under Wet–Dry Events
3.6. Changes in Soil Bacterial and Fungal Community Function under Wet–Dry Events
4. Discussion
4.1. Large Differences in Soil Physicochemical Properties and Enzyme Activities under Wet–Dry Events
4.2. Wet–Dry Events Drove the Transition of Soil r–Strategist Bacteria to K–Strategist Bacteria
4.3. Soil Environment Is an Important Affecting Microbial Function Changes under Wet–Dry Events
5. Conclusions
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
References
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Soil Physicochemical Properties and Extracellular Enzyme Activities | RPS | MPS | SPS |
---|---|---|---|
pH | 8.11 ± 0.04a | 8.06 ± 0.04a | 7.04 ± 0.02a |
EC (us/cm) | 815.67 ± 92.03b | 1554.00 ± 159.51a | 1378.67 ± 125.23a |
TC (g/kg) | 25.36 ± 0.55b | 24.79 ± 0.86b | 28.92 ± 0.67a |
TN (g/kg) | 0.88 ± 0.05b | 0.84 ± 0.05b | 1.17 ± 0.06a |
TP (g/kg) | 0.71 ± 0.02a | 0.74 ± 0.02a | 0.76 ± 0.04a |
TOC (g/kg) | 17.74 ± 0.82b | 18.01 ± 0.99b | 23.56 ± 0.65a |
AN (mg/kg) | 55.16 ± 2.24b | 48.64 ± 1.93b | 68.03 ± 2.57a |
AP (mg/kg) | 24.82 ± 0.70a | 22.38 ± 0.54a | 23.96 ± 1.24a |
αG (ng/L) | 42.92 ± 1.09b | 45.43 ± 0.71a | 47.64 ± 0.71a |
βG (IU/L) | 47.21 ± 1.23b | 47.49 ± 0.83b | 51.73 ± 0.63a |
βX (IU/L) | 225.21 ± 4.37a | 224.73 ± 4.27a | 221.70 ± 5.86a |
POX (IU/L) | 242.67 ± 5.59a | 249.11 ± 5.77a | 247.10 ± 7.11a |
NAG (U/L) | 40.53 ± 0.78b | 42.93 ± 0.60a | 44.50 ± 0.79a |
LAP (U/L) | 253.65 ± 4.36a | 244.67 ± 5.70a | 227.26 ± 5.05b |
SAP (U/L) | 787.96 ± 21.09a | 853.59 ± 16.18a | 781.08 ± 19.46a |
Vector L | 1.83 ± 0.009ab | 1.82 ± 0.006b | 1.84 ± 0.007a |
Vector A | 52.48 ± 0.12a | 51.88 ± 0.16b | 52.14 ± 0.19ab |
Network Parameters | RPS | MPS | SPS |
---|---|---|---|
Nodes | 800 | 1007 | 898 |
Edges | 821 | 1233 | 865 |
Positive edges | 572 | 671 | 489 |
Negative edges | 249 | 562 | 376 |
Number of modules | 264 | 254 | 309 |
Modularity | 0.87 | 0.86 | 0.90 |
Average path length | 7.40 | 9.64 | 10.53 |
Graph diameter | 23.08 | 29.62 | 30.30 |
Clustering coefficient | 0.32 | 0.32 | 0.39 |
Degree centralization | 0.01 | 0.01 | 0.01 |
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Zhang, Y.; Mo, C.; Pan, Y.; Yang, P.; Ding, X.; Lei, Q.; Kang, P. Responses of Soil Microbial Survival Strategies and Functional Changes to Wet–Dry Cycle Events. Microorganisms 2023, 11, 2783. https://doi.org/10.3390/microorganisms11112783
Zhang Y, Mo C, Pan Y, Yang P, Ding X, Lei Q, Kang P. Responses of Soil Microbial Survival Strategies and Functional Changes to Wet–Dry Cycle Events. Microorganisms. 2023; 11(11):2783. https://doi.org/10.3390/microorganisms11112783
Chicago/Turabian StyleZhang, Yaqi, Chunyi Mo, Yaqing Pan, Pengbin Yang, Xiaodong Ding, Qian Lei, and Peng Kang. 2023. "Responses of Soil Microbial Survival Strategies and Functional Changes to Wet–Dry Cycle Events" Microorganisms 11, no. 11: 2783. https://doi.org/10.3390/microorganisms11112783