The microbial mechanism of maize residue decomposition under different temperature and moisture regimes in a Solonchak
Abstract Soil salinization becomes serious under climate change and human activities. Although the residue decomposition contributes lots to soil carbon storage and fertility, the decomposition process and microbial mechanisms on saline-alkali soils are still vague facing climate change. We measured...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2025-01-01
|
| Series: | Scientific Reports |
| Subjects: | |
| Online Access: | https://doi.org/10.1038/s41598-024-81292-3 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832594852667195392 |
|---|---|
| author | Fan Huang Wan Zhang Lihua Xue Bahar Razavi Kazem Zamanian Xiaoning Zhao |
| author_facet | Fan Huang Wan Zhang Lihua Xue Bahar Razavi Kazem Zamanian Xiaoning Zhao |
| author_sort | Fan Huang |
| collection | DOAJ |
| description | Abstract Soil salinization becomes serious under climate change and human activities. Although the residue decomposition contributes lots to soil carbon storage and fertility, the decomposition process and microbial mechanisms on saline-alkali soils are still vague facing climate change. We measured the mass loss of residue (0, 4, 8, 15, 30, 60 and 90 days), CO2 emission (every two days), and the microbial community structure (0, 4, 15 and 90 days) by using the litter bag method, gas chromatography and high-throughput sequencing technology during the residue decomposition (90 days) in a saline-alkali soil from the Tarim River Basin, China under various temperatures (15 °C, 25 °C, 35 °C) and soil moisture levels (20%, 40%, 60% water holding capacity). The decomposition stage consisted of fast (0–15 days) and slow periods (15–90 days). Using the double exponential equation, the decomposition rates of labile and recalcitrant components, the labile component and cumulative CO2 emissions increased faster with increased moisture than with temperature. The Q10 was greater at 15–25 °C than at 25–35 °C, which increased with the increased soil moisture in the leaf but with decreased soil moisture in the stem at 15–25 °C. Proteobacteria increased from 0 to 15 days on leaves (25–43%) and stems (25–29%) and showed no changes thereafter. Proteobacteria increased with increased soil moisture but decreased temperature. Actinomycetes was the opposite and more abundant on the stem than on the leaf. Bacteroidetes increased after 15 days and increased with increased soil moisture. Firmicutes were the main bacterial groups at 0–15 days, but decreased at 15–90 days (leaf: 44 − 15%, stem: 49 − 13%). In conclusion, warming, especially 15–25 °C, contributes to the decomposition of stems and wetting, especially 20-40% WHC, contributes to that of leaves within the first 15 days, afterwards wetting played an important role. Our results could also provide the adopting strategies for residue return to increase the soil carbon content while decreasing CO2 emissions facing climate change. |
| format | Article |
| id | doaj-art-b2092075b6fa4febb42043c5ca229caf |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-b2092075b6fa4febb42043c5ca229caf2025-01-19T12:18:37ZengNature PortfolioScientific Reports2045-23222025-01-0115111510.1038/s41598-024-81292-3The microbial mechanism of maize residue decomposition under different temperature and moisture regimes in a SolonchakFan Huang0Wan Zhang1Lihua Xue2Bahar Razavi3Kazem Zamanian4Xiaoning Zhao5College of Tourism and Aviation Management, Hunan Women’s UniversityCollege of Tourism and Aviation Management, Hunan Women’s UniversityInstitute of Grain Crops, Xinjiang Academy of Agricultural SciencesDepartment of Soil-Plant-Microbiome, Institute of Phytopathology, University of KielInstitute of Earth System Sciences, Section Soil Science, Leibniz University of HannoverShaanxi Province Key Laboratory of Bio-resources, School of Biological Science and Engineering, Shaanxi University of TechnologyAbstract Soil salinization becomes serious under climate change and human activities. Although the residue decomposition contributes lots to soil carbon storage and fertility, the decomposition process and microbial mechanisms on saline-alkali soils are still vague facing climate change. We measured the mass loss of residue (0, 4, 8, 15, 30, 60 and 90 days), CO2 emission (every two days), and the microbial community structure (0, 4, 15 and 90 days) by using the litter bag method, gas chromatography and high-throughput sequencing technology during the residue decomposition (90 days) in a saline-alkali soil from the Tarim River Basin, China under various temperatures (15 °C, 25 °C, 35 °C) and soil moisture levels (20%, 40%, 60% water holding capacity). The decomposition stage consisted of fast (0–15 days) and slow periods (15–90 days). Using the double exponential equation, the decomposition rates of labile and recalcitrant components, the labile component and cumulative CO2 emissions increased faster with increased moisture than with temperature. The Q10 was greater at 15–25 °C than at 25–35 °C, which increased with the increased soil moisture in the leaf but with decreased soil moisture in the stem at 15–25 °C. Proteobacteria increased from 0 to 15 days on leaves (25–43%) and stems (25–29%) and showed no changes thereafter. Proteobacteria increased with increased soil moisture but decreased temperature. Actinomycetes was the opposite and more abundant on the stem than on the leaf. Bacteroidetes increased after 15 days and increased with increased soil moisture. Firmicutes were the main bacterial groups at 0–15 days, but decreased at 15–90 days (leaf: 44 − 15%, stem: 49 − 13%). In conclusion, warming, especially 15–25 °C, contributes to the decomposition of stems and wetting, especially 20-40% WHC, contributes to that of leaves within the first 15 days, afterwards wetting played an important role. Our results could also provide the adopting strategies for residue return to increase the soil carbon content while decreasing CO2 emissions facing climate change.https://doi.org/10.1038/s41598-024-81292-3CO2 emissionMaize residue decomposition rateMicroorganismsResidue returning strategiesSoil moistureTemperature |
| spellingShingle | Fan Huang Wan Zhang Lihua Xue Bahar Razavi Kazem Zamanian Xiaoning Zhao The microbial mechanism of maize residue decomposition under different temperature and moisture regimes in a Solonchak Scientific Reports CO2 emission Maize residue decomposition rate Microorganisms Residue returning strategies Soil moisture Temperature |
| title | The microbial mechanism of maize residue decomposition under different temperature and moisture regimes in a Solonchak |
| title_full | The microbial mechanism of maize residue decomposition under different temperature and moisture regimes in a Solonchak |
| title_fullStr | The microbial mechanism of maize residue decomposition under different temperature and moisture regimes in a Solonchak |
| title_full_unstemmed | The microbial mechanism of maize residue decomposition under different temperature and moisture regimes in a Solonchak |
| title_short | The microbial mechanism of maize residue decomposition under different temperature and moisture regimes in a Solonchak |
| title_sort | microbial mechanism of maize residue decomposition under different temperature and moisture regimes in a solonchak |
| topic | CO2 emission Maize residue decomposition rate Microorganisms Residue returning strategies Soil moisture Temperature |
| url | https://doi.org/10.1038/s41598-024-81292-3 |
| work_keys_str_mv | AT fanhuang themicrobialmechanismofmaizeresiduedecompositionunderdifferenttemperatureandmoistureregimesinasolonchak AT wanzhang themicrobialmechanismofmaizeresiduedecompositionunderdifferenttemperatureandmoistureregimesinasolonchak AT lihuaxue themicrobialmechanismofmaizeresiduedecompositionunderdifferenttemperatureandmoistureregimesinasolonchak AT baharrazavi themicrobialmechanismofmaizeresiduedecompositionunderdifferenttemperatureandmoistureregimesinasolonchak AT kazemzamanian themicrobialmechanismofmaizeresiduedecompositionunderdifferenttemperatureandmoistureregimesinasolonchak AT xiaoningzhao themicrobialmechanismofmaizeresiduedecompositionunderdifferenttemperatureandmoistureregimesinasolonchak AT fanhuang microbialmechanismofmaizeresiduedecompositionunderdifferenttemperatureandmoistureregimesinasolonchak AT wanzhang microbialmechanismofmaizeresiduedecompositionunderdifferenttemperatureandmoistureregimesinasolonchak AT lihuaxue microbialmechanismofmaizeresiduedecompositionunderdifferenttemperatureandmoistureregimesinasolonchak AT baharrazavi microbialmechanismofmaizeresiduedecompositionunderdifferenttemperatureandmoistureregimesinasolonchak AT kazemzamanian microbialmechanismofmaizeresiduedecompositionunderdifferenttemperatureandmoistureregimesinasolonchak AT xiaoningzhao microbialmechanismofmaizeresiduedecompositionunderdifferenttemperatureandmoistureregimesinasolonchak |